[pve-devel] [PATCH installer 0/6] fix #5811: add option to retrieve FQDN from DHCP configuration

[pve-devel] [PATCH installer 0/6] fix #5811: add option to retrieve FQDN from DHCP configuration

[Christoph Heiss]

Fixes #5811 [0].

Adds a new option to the answer file for specifying to use the
DHCP-provided hostname and domain. For the domain, an additional
fallback/default can be specified, in case the DHCP server only provides
hostnames. The hostname is always required in this mode.

The addition to the answer file format is done in a backwards-compatible
way.

Users can now specify the following to use the DHCP-provided domain:

```
[global]
fqdn.source = "from-dhcp"
```

or additionally with a custom domain:

```
[global.fqdn]
source = "from-dhcp"
domain = "custom.domain.local"
```

Patches #1 through #4 can all be applied independently, #1 & #4 are pure
cleanups.

[0] https://bugzilla.proxmox.com/show_bug.cgi?id=5811

Diffstat
========

Christoph Heiss (6):
  auto: utils: avoid a force unwrap()
  auto: tests: parse-answer: allow per-test runtime env
  auto: tests: allow testing for serde parse errors of answer files
  tui, common: move network option tests to correct crate
  common: options: allow user-supplied domain for network options
  fix #5811: auto: add option to retrieve FQDN from DHCP configuration

 proxmox-auto-installer/src/answer.rs          |  36 +++-
 proxmox-auto-installer/src/utils.rs           |  43 ++++-
 proxmox-auto-installer/tests/parse-answer.rs  |  43 +++--
 .../parse_answer/fqdn_from_dhcp.json          |  19 ++
 .../parse_answer/fqdn_from_dhcp.toml          |  14 ++
 ...cp_no_dhcp_domain_with_default_domain.json |  19 ++
 ...cp_no_dhcp_domain_with_default_domain.toml |  17 ++
 ...ll_fqdn_from_dhcp_with_default_domain.json |  19 ++
 ...ll_fqdn_from_dhcp_with_default_domain.toml |  17 ++
 .../fqdn_from_dhcp_no_default_domain.json     |   3 +
 ...n_from_dhcp_no_default_domain.run-env.json |   1 +
 .../fqdn_from_dhcp_no_default_domain.toml     |  14 ++
 .../parse_answer_fail/fqdn_hostname_only.json |   3 +
 .../parse_answer_fail/fqdn_hostname_only.toml |  14 ++
 .../parse_answer_fail/no_fqdn_from_dhcp.json  |   3 +
 .../no_fqdn_from_dhcp.run-env.json            |   1 +
 .../parse_answer_fail/no_fqdn_from_dhcp.toml  |  14 ++
 .../tests/resources/run-env-info.json         |   2 +-
 proxmox-installer-common/Cargo.toml           |   3 +
 proxmox-installer-common/src/options.rs       | 165 +++++++++++++++++-
 proxmox-post-hook/src/main.rs                 |  19 +-
 proxmox-tui-installer/Cargo.toml              |   3 -
 proxmox-tui-installer/src/main.rs             |   2 +-
 proxmox-tui-installer/src/options.rs          |  93 ----------
 24 files changed, 440 insertions(+), 127 deletions(-)
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp.toml
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp_no_dhcp_domain_with_default_domain.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp_no_dhcp_domain_with_default_domain.toml
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer/full_fqdn_from_dhcp_with_default_domain.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer/full_fqdn_from_dhcp_with_default_domain.toml
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.run-env.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.toml
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_hostname_only.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_hostname_only.toml
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.run-env.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.toml

-- 
2.48.1



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[pve-devel] [PATCH installer 1/6] auto: utils: avoid a force unwrap()

[Christoph Heiss]

At this point, this value will definitely be set & valid and *should*
never be `None`. Still, better be safe than sorry and just unwrap_or()
with a sane default value instead.

Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
 proxmox-auto-installer/src/utils.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/proxmox-auto-installer/src/utils.rs b/proxmox-auto-installer/src/utils.rs
index 1789fd8..655fecb 100644
--- a/proxmox-auto-installer/src/utils.rs
+++ b/proxmox-auto-installer/src/utils.rs
@@ -424,7 +424,11 @@ pub fn parse_answer(
 
         mngmt_nic: network_settings.ifname,
 
-        hostname: network_settings.fqdn.host().unwrap().to_string(),
+        hostname: network_settings
+            .fqdn
+            .host()
+            .unwrap_or(setup_info.config.product.default_hostname())
+            .to_string(),
         domain: network_settings.fqdn.domain(),
         cidr: network_settings.address,
         gateway: network_settings.gateway,
-- 
2.48.1



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[pve-devel] applied: [PATCH installer 1/6] auto: utils: avoid a force unwrap()

[Thomas Lamprecht]

Am 27.03.25 um 16:17 schrieb Christoph Heiss:
> At this point, this value will definitely be set & valid and *should*
> never be `None`. Still, better be safe than sorry and just unwrap_or()
> with a sane default value instead.
> 
> Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
> ---
>  proxmox-auto-installer/src/utils.rs | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
>

applied, thanks!


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[pve-devel] [PATCH installer 2/6] auto: tests: parse-answer: allow per-test runtime env

[Christoph Heiss]

This allows to create custom runtime environment files for tests to use
instead of the common one, to allow testing codepaths which depend on
certain runtime-gathered values.

Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
 proxmox-auto-installer/tests/parse-answer.rs | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/proxmox-auto-installer/tests/parse-answer.rs b/proxmox-auto-installer/tests/parse-answer.rs
index 39b9401..6d5f228 100644
--- a/proxmox-auto-installer/tests/parse-answer.rs
+++ b/proxmox-auto-installer/tests/parse-answer.rs
@@ -47,7 +47,12 @@ fn setup_test_basic(path: impl AsRef<Path>) -> (SetupInfo, LocaleInfo, RuntimeIn
 
 fn run_named_test(name: &str) {
     let resource_path = get_test_resource_path().unwrap();
-    let (setup_info, locales, runtime_info, udev_info) = setup_test_basic(&resource_path);
+    let (setup_info, locales, mut runtime_info, udev_info) = setup_test_basic(&resource_path);
+
+    let test_run_env_path = resource_path.join(format!("parse_answer/{name}.run-env.json"));
+    if test_run_env_path.exists() {
+        runtime_info = read_json(test_run_env_path).unwrap()
+    }
 
     let answer_path = resource_path.join(format!("parse_answer/{name}.toml"));
 
@@ -65,7 +70,12 @@ fn run_named_test(name: &str) {
 
 fn run_named_fail_parse_test(name: &str) {
     let resource_path = get_test_resource_path().unwrap();
-    let (setup_info, locales, runtime_info, udev_info) = setup_test_basic(&resource_path);
+    let (setup_info, locales, mut runtime_info, udev_info) = setup_test_basic(&resource_path);
+
+    let test_run_env_path = resource_path.join(format!("parse_answer_fail/{name}.run-env.json"));
+    if test_run_env_path.exists() {
+        runtime_info = read_json(test_run_env_path).unwrap()
+    }
 
     let answer_path = resource_path.join(format!("parse_answer_fail/{name}.toml"));
 
-- 
2.48.1



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[pve-devel] applied: [PATCH installer 2/6] auto: tests: parse-answer: allow per-test runtime env

[Thomas Lamprecht]

Am 27.03.25 um 16:17 schrieb Christoph Heiss:
> This allows to create custom runtime environment files for tests to use
> instead of the common one, to allow testing codepaths which depend on
> certain runtime-gathered values.
> 
> Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
> ---
>  proxmox-auto-installer/tests/parse-answer.rs | 14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
> 
>

applied, thanks!


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[pve-devel] [PATCH installer 3/6] auto: tests: allow testing for serde parse errors of answer files

[Christoph Heiss]

In certain cases, it can be useful for (expected) parse failures, where
the error message then also comes directly from serde.

Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
 proxmox-auto-installer/tests/parse-answer.rs | 21 +++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/proxmox-auto-installer/tests/parse-answer.rs b/proxmox-auto-installer/tests/parse-answer.rs
index 6d5f228..57e20b3 100644
--- a/proxmox-auto-installer/tests/parse-answer.rs
+++ b/proxmox-auto-installer/tests/parse-answer.rs
@@ -2,7 +2,6 @@ use serde_json::Value;
 use std::fs;
 use std::path::{Path, PathBuf};
 
-use proxmox_auto_installer::answer;
 use proxmox_auto_installer::answer::Answer;
 use proxmox_auto_installer::udevinfo::UdevInfo;
 use proxmox_auto_installer::utils::parse_answer;
@@ -19,11 +18,8 @@ fn get_test_resource_path() -> Result<PathBuf, String> {
 
 fn get_answer(path: impl AsRef<Path>) -> Result<Answer, String> {
     let answer_raw = fs::read_to_string(path).unwrap();
-    let answer: answer::Answer = toml::from_str(&answer_raw)
-        .map_err(|err| format!("error parsing answer.toml: {err}"))
-        .unwrap();
-
-    Ok(answer)
+    toml::from_str(&answer_raw)
+        .map_err(|err| format!("error parsing answer.toml: {}", err.message()))
 }
 
 fn setup_test_basic(path: impl AsRef<Path>) -> (SetupInfo, LocaleInfo, RuntimeInfo, UdevInfo) {
@@ -79,14 +75,21 @@ fn run_named_fail_parse_test(name: &str) {
 
     let answer_path = resource_path.join(format!("parse_answer_fail/{name}.toml"));
 
-    let answer = get_answer(&answer_path).unwrap();
-    let config = parse_answer(&answer, &udev_info, &runtime_info, &locales, &setup_info);
-
     let err_json: Value = {
         let path = resource_path.join(format!("parse_answer_fail/{name}.json"));
         read_json(path).unwrap()
     };
 
+    let answer = match get_answer(&answer_path) {
+        Ok(answer) => answer,
+        Err(err) => {
+            assert_eq!(err, err_json.get("parse-error").unwrap().as_str().unwrap());
+            return;
+        }
+    };
+
+    let config = parse_answer(&answer, &udev_info, &runtime_info, &locales, &setup_info);
+
     assert!(config.is_err());
     assert_eq!(
         config.unwrap_err().to_string(),
-- 
2.48.1



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[pve-devel] applied: [PATCH installer 3/6] auto: tests: allow testing for serde parse errors of answer files

[Thomas Lamprecht]

Am 27.03.25 um 16:17 schrieb Christoph Heiss:
> In certain cases, it can be useful for (expected) parse failures, where
> the error message then also comes directly from serde.
> 
> Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
> ---
>  proxmox-auto-installer/tests/parse-answer.rs | 21 +++++++++++---------
>  1 file changed, 12 insertions(+), 9 deletions(-)
> 
>

applied, thanks!


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[pve-devel] [PATCH installer 4/6] tui, common: move network option tests to correct crate

[Christoph Heiss]

The `NetworkOptions` struct was moved here in

  5362c05cd ("common: copy common code from tui-installer")

and

  86c48f76f ("tui: switch to common crate")

but the tests were forgotten at the original place.

No functional changes.

Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
 proxmox-installer-common/Cargo.toml     |  3 +
 proxmox-installer-common/src/options.rs | 88 +++++++++++++++++++++++
 proxmox-tui-installer/Cargo.toml        |  3 -
 proxmox-tui-installer/src/options.rs    | 93 -------------------------
 4 files changed, 91 insertions(+), 96 deletions(-)

diff --git a/proxmox-installer-common/Cargo.toml b/proxmox-installer-common/Cargo.toml
index c220f01..4bdb2b0 100644
--- a/proxmox-installer-common/Cargo.toml
+++ b/proxmox-installer-common/Cargo.toml
@@ -31,3 +31,6 @@ http = [
     "dep:sha2",
     "dep:ureq"
 ]
+
+[dev-dependencies]
+pretty_assertions = "1.4"
diff --git a/proxmox-installer-common/src/options.rs b/proxmox-installer-common/src/options.rs
index 6ebf64c..28f2971 100644
--- a/proxmox-installer-common/src/options.rs
+++ b/proxmox-installer-common/src/options.rs
@@ -497,6 +497,12 @@ pub fn email_validate(email: &str) -> Result<()> {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use crate::{
+        setup::{Dns, Gateway, Interface, InterfaceState, NetworkInfo, Routes, SetupInfo},
+        utils::CidrAddress,
+    };
+    use std::collections::BTreeMap;
+    use std::net::{IpAddr, Ipv4Addr};
 
     #[test]
     fn zfs_arc_limit() {
@@ -520,4 +526,86 @@ mod tests {
             assert_eq!(default_zfs_arc_max(ProxmoxProduct::PDM, *total_memory), 0);
         }
     }
+
+    #[test]
+    fn network_options_from_setup_network_info() {
+        let setup = SetupInfo::mocked();
+
+        let mut interfaces = BTreeMap::new();
+        interfaces.insert(
+            "eth0".to_owned(),
+            Interface {
+                name: "eth0".to_owned(),
+                index: 0,
+                state: InterfaceState::Up,
+                mac: "01:23:45:67:89:ab".to_owned(),
+                addresses: Some(vec![
+                    CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
+                ]),
+            },
+        );
+
+        let mut info = NetworkInfo {
+            dns: Dns {
+                domain: Some("bar.com".to_owned()),
+                dns: Vec::new(),
+            },
+            routes: Some(Routes {
+                gateway4: Some(Gateway {
+                    dev: "eth0".to_owned(),
+                    gateway: IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1)),
+                }),
+                gateway6: None,
+            }),
+            interfaces,
+            hostname: Some("foo".to_owned()),
+        };
+
+        pretty_assertions::assert_eq!(
+            NetworkOptions::defaults_from(&setup, &info),
+            NetworkOptions {
+                ifname: "eth0".to_owned(),
+                fqdn: Fqdn::from("foo.bar.com").unwrap(),
+                address: CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
+                gateway: IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1)),
+                dns_server: Ipv4Addr::UNSPECIFIED.into(),
+            }
+        );
+
+        info.hostname = None;
+        pretty_assertions::assert_eq!(
+            NetworkOptions::defaults_from(&setup, &info),
+            NetworkOptions {
+                ifname: "eth0".to_owned(),
+                fqdn: Fqdn::from("pve.bar.com").unwrap(),
+                address: CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
+                gateway: IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1)),
+                dns_server: Ipv4Addr::UNSPECIFIED.into(),
+            }
+        );
+
+        info.dns.domain = None;
+        pretty_assertions::assert_eq!(
+            NetworkOptions::defaults_from(&setup, &info),
+            NetworkOptions {
+                ifname: "eth0".to_owned(),
+                fqdn: Fqdn::from("pve.example.invalid").unwrap(),
+                address: CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
+                gateway: IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1)),
+                dns_server: Ipv4Addr::UNSPECIFIED.into(),
+            }
+        );
+
+        info.hostname = Some("foo".to_owned());
+        pretty_assertions::assert_eq!(
+            NetworkOptions::defaults_from(&setup, &info),
+            NetworkOptions {
+                ifname: "eth0".to_owned(),
+                fqdn: Fqdn::from("foo.example.invalid").unwrap(),
+                address: CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
+                gateway: IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1)),
+                dns_server: Ipv4Addr::UNSPECIFIED.into(),
+            }
+        );
+    }
 }
diff --git a/proxmox-tui-installer/Cargo.toml b/proxmox-tui-installer/Cargo.toml
index 0e9c940..403d1ef 100644
--- a/proxmox-tui-installer/Cargo.toml
+++ b/proxmox-tui-installer/Cargo.toml
@@ -14,6 +14,3 @@ serde_json.workspace = true
 regex.workspace = true
 
 cursive = { version = "0.21", default-features = false, features = ["crossterm-backend"] }
-
-[dev-dependencies]
-pretty_assertions = "1.4"
diff --git a/proxmox-tui-installer/src/options.rs b/proxmox-tui-installer/src/options.rs
index 8dcd697..c80877f 100644
--- a/proxmox-tui-installer/src/options.rs
+++ b/proxmox-tui-installer/src/options.rs
@@ -79,96 +79,3 @@ impl InstallerOptions {
         ]
     }
 }
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use proxmox_installer_common::{
-        setup::{Dns, Gateway, Interface, InterfaceState, NetworkInfo, Routes, SetupInfo},
-        utils::{CidrAddress, Fqdn},
-    };
-    use std::collections::BTreeMap;
-    use std::net::{IpAddr, Ipv4Addr};
-
-    #[test]
-    fn network_options_from_setup_network_info() {
-        let setup = SetupInfo::mocked();
-
-        let mut interfaces = BTreeMap::new();
-        interfaces.insert(
-            "eth0".to_owned(),
-            Interface {
-                name: "eth0".to_owned(),
-                index: 0,
-                state: InterfaceState::Up,
-                mac: "01:23:45:67:89:ab".to_owned(),
-                addresses: Some(vec![
-                    CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
-                ]),
-            },
-        );
-
-        let mut info = NetworkInfo {
-            dns: Dns {
-                domain: Some("bar.com".to_owned()),
-                dns: Vec::new(),
-            },
-            routes: Some(Routes {
-                gateway4: Some(Gateway {
-                    dev: "eth0".to_owned(),
-                    gateway: IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1)),
-                }),
-                gateway6: None,
-            }),
-            interfaces,
-            hostname: Some("foo".to_owned()),
-        };
-
-        pretty_assertions::assert_eq!(
-            NetworkOptions::defaults_from(&setup, &info),
-            NetworkOptions {
-                ifname: "eth0".to_owned(),
-                fqdn: Fqdn::from("foo.bar.com").unwrap(),
-                address: CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
-                gateway: IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1)),
-                dns_server: Ipv4Addr::UNSPECIFIED.into(),
-            }
-        );
-
-        info.hostname = None;
-        pretty_assertions::assert_eq!(
-            NetworkOptions::defaults_from(&setup, &info),
-            NetworkOptions {
-                ifname: "eth0".to_owned(),
-                fqdn: Fqdn::from("pve.bar.com").unwrap(),
-                address: CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
-                gateway: IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1)),
-                dns_server: Ipv4Addr::UNSPECIFIED.into(),
-            }
-        );
-
-        info.dns.domain = None;
-        pretty_assertions::assert_eq!(
-            NetworkOptions::defaults_from(&setup, &info),
-            NetworkOptions {
-                ifname: "eth0".to_owned(),
-                fqdn: Fqdn::from("pve.example.invalid").unwrap(),
-                address: CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
-                gateway: IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1)),
-                dns_server: Ipv4Addr::UNSPECIFIED.into(),
-            }
-        );
-
-        info.hostname = Some("foo".to_owned());
-        pretty_assertions::assert_eq!(
-            NetworkOptions::defaults_from(&setup, &info),
-            NetworkOptions {
-                ifname: "eth0".to_owned(),
-                fqdn: Fqdn::from("foo.example.invalid").unwrap(),
-                address: CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
-                gateway: IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1)),
-                dns_server: Ipv4Addr::UNSPECIFIED.into(),
-            }
-        );
-    }
-}
-- 
2.48.1



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Re: [pve-devel] [PATCH installer 4/6] tui, common: move network option tests to correct crate

[Thomas Lamprecht]

Am 27.03.25 um 16:17 schrieb Christoph Heiss:
> The `NetworkOptions` struct was moved here in
> 
>   5362c05cd ("common: copy common code from tui-installer")
> 
> and
> 
>   86c48f76f ("tui: switch to common crate")
> 
> but the tests were forgotten at the original place.
> 
> No functional changes.
> 
> Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
> ---
>  proxmox-installer-common/Cargo.toml     |  3 +
>  proxmox-installer-common/src/options.rs | 88 +++++++++++++++++++++++
>  proxmox-tui-installer/Cargo.toml        |  3 -
>  proxmox-tui-installer/src/options.rs    | 93 -------------------------
>  4 files changed, 91 insertions(+), 96 deletions(-)
> 

this one needs to be rebased due to changes in the context, a quick
resolution caused a compile failure, probably just due to a error on
my side on resolution. Then you could also re-send patch 6/6 as base64
encoded (git send-email --transfer-encoding=base64 ..)


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[pve-devel] [PATCH installer 5/6] common: options: allow user-supplied domain for network options

[Christoph Heiss]

Add an optional parameter to allow specifying a domain, which will take
precedence over both the DHCP-supplied domain (if any) and the hardcoded
default domain.

Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
 proxmox-auto-installer/src/utils.rs     |  2 +-
 proxmox-installer-common/src/options.rs | 95 ++++++++++++++++++++-----
 proxmox-tui-installer/src/main.rs       |  2 +-
 3 files changed, 80 insertions(+), 19 deletions(-)

diff --git a/proxmox-auto-installer/src/utils.rs b/proxmox-auto-installer/src/utils.rs
index 655fecb..cf072b8 100644
--- a/proxmox-auto-installer/src/utils.rs
+++ b/proxmox-auto-installer/src/utils.rs
@@ -24,7 +24,7 @@ fn get_network_settings(
     runtime_info: &RuntimeInfo,
     setup_info: &SetupInfo,
 ) -> Result<NetworkOptions> {
-    let mut network_options = NetworkOptions::defaults_from(setup_info, &runtime_info.network);
+    let mut network_options = NetworkOptions::defaults_from(setup_info, &runtime_info.network, None);
 
     info!("Setting network configuration");
 
diff --git a/proxmox-installer-common/src/options.rs b/proxmox-installer-common/src/options.rs
index 28f2971..562d285 100644
--- a/proxmox-installer-common/src/options.rs
+++ b/proxmox-installer-common/src/options.rs
@@ -408,10 +408,18 @@ pub struct NetworkOptions {
 impl NetworkOptions {
     const DEFAULT_DOMAIN: &'static str = "example.invalid";
 
-    pub fn defaults_from(setup: &SetupInfo, network: &NetworkInfo) -> Self {
+    pub fn defaults_from(
+        setup: &SetupInfo,
+        network: &NetworkInfo,
+        default_domain: Option<&str>,
+    ) -> Self {
         let mut this = Self {
             ifname: String::new(),
-            fqdn: Self::construct_fqdn(network, setup.config.product.default_hostname()),
+            fqdn: Self::construct_fqdn(
+                network,
+                setup.config.product.default_hostname(),
+                default_domain,
+            ),
             // Safety: The provided mask will always be valid.
             address: CidrAddress::new(Ipv4Addr::UNSPECIFIED, 0).unwrap(),
             gateway: Ipv4Addr::UNSPECIFIED.into(),
@@ -454,14 +462,23 @@ impl NetworkOptions {
         this
     }
 
-    fn construct_fqdn(network: &NetworkInfo, default_hostname: &str) -> Fqdn {
+    pub fn construct_fqdn(
+        network: &NetworkInfo,
+        default_hostname: &str,
+        default_domain: Option<&str>,
+    ) -> Fqdn {
         let hostname = network.hostname.as_deref().unwrap_or(default_hostname);
 
-        let domain = network
-            .dns
-            .domain
-            .as_deref()
-            .unwrap_or(Self::DEFAULT_DOMAIN);
+        // First, use the provided default domain if provided. If that is unset,
+        // use the one from the host network configuration, i.e. as and if provided by DHCP.
+        // As last fallback, use [`Self::DEFAULT_DOMAIN`].
+        let domain = default_domain.unwrap_or_else(|| {
+            network
+                .dns
+                .domain
+                .as_deref()
+                .unwrap_or(Self::DEFAULT_DOMAIN)
+        });
 
         Fqdn::from(&format!("{hostname}.{domain}")).unwrap_or_else(|_| {
             // Safety: This will always result in a valid FQDN, as we control & know
@@ -527,10 +544,7 @@ mod tests {
         }
     }
 
-    #[test]
-    fn network_options_from_setup_network_info() {
-        let setup = SetupInfo::mocked();
-
+    fn mock_setup_network() -> (SetupInfo, NetworkInfo) {
         let mut interfaces = BTreeMap::new();
         interfaces.insert(
             "eth0".to_owned(),
@@ -545,7 +559,7 @@ mod tests {
             },
         );
 
-        let mut info = NetworkInfo {
+        let info = NetworkInfo {
             dns: Dns {
                 domain: Some("bar.com".to_owned()),
                 dns: Vec::new(),
@@ -561,8 +575,15 @@ mod tests {
             hostname: Some("foo".to_owned()),
         };
 
+        (SetupInfo::mocked(), info)
+    }
+
+    #[test]
+    fn network_options_from_setup_network_info() {
+        let (setup, mut info) = mock_setup_network();
+
         pretty_assertions::assert_eq!(
-            NetworkOptions::defaults_from(&setup, &info),
+            NetworkOptions::defaults_from(&setup, &info, None),
             NetworkOptions {
                 ifname: "eth0".to_owned(),
                 fqdn: Fqdn::from("foo.bar.com").unwrap(),
@@ -574,7 +595,7 @@ mod tests {
 
         info.hostname = None;
         pretty_assertions::assert_eq!(
-            NetworkOptions::defaults_from(&setup, &info),
+            NetworkOptions::defaults_from(&setup, &info, None),
             NetworkOptions {
                 ifname: "eth0".to_owned(),
                 fqdn: Fqdn::from("pve.bar.com").unwrap(),
@@ -586,7 +607,7 @@ mod tests {
 
         info.dns.domain = None;
         pretty_assertions::assert_eq!(
-            NetworkOptions::defaults_from(&setup, &info),
+            NetworkOptions::defaults_from(&setup, &info, None),
             NetworkOptions {
                 ifname: "eth0".to_owned(),
                 fqdn: Fqdn::from("pve.example.invalid").unwrap(),
@@ -598,7 +619,7 @@ mod tests {
 
         info.hostname = Some("foo".to_owned());
         pretty_assertions::assert_eq!(
-            NetworkOptions::defaults_from(&setup, &info),
+            NetworkOptions::defaults_from(&setup, &info, None),
             NetworkOptions {
                 ifname: "eth0".to_owned(),
                 fqdn: Fqdn::from("foo.example.invalid").unwrap(),
@@ -608,4 +629,44 @@ mod tests {
             }
         );
     }
+
+    #[test]
+    fn network_options_correctly_handles_user_supplied_default_domain() {
+        let (setup, mut info) = mock_setup_network();
+
+        pretty_assertions::assert_eq!(
+            NetworkOptions::defaults_from(&setup, &info, None),
+            NetworkOptions {
+                ifname: "eth0".to_owned(),
+                fqdn: Fqdn::from("foo.bar.com").unwrap(),
+                address: CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
+                gateway: IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1)),
+                dns_server: Ipv4Addr::UNSPECIFIED.into(),
+            }
+        );
+
+        info.dns.domain = None;
+        pretty_assertions::assert_eq!(
+            NetworkOptions::defaults_from(&setup, &info, Some("custom.local")),
+            NetworkOptions {
+                ifname: "eth0".to_owned(),
+                fqdn: Fqdn::from("foo.custom.local").unwrap(),
+                address: CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
+                gateway: IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1)),
+                dns_server: Ipv4Addr::UNSPECIFIED.into(),
+            }
+        );
+
+        info.dns.domain = Some("some.domain.local".to_owned());
+        pretty_assertions::assert_eq!(
+            NetworkOptions::defaults_from(&setup, &info, Some("custom.local")),
+            NetworkOptions {
+                ifname: "eth0".to_owned(),
+                fqdn: Fqdn::from("foo.custom.local").unwrap(),
+                address: CidrAddress::new(Ipv4Addr::new(192, 168, 0, 2), 24).unwrap(),
+                gateway: IpAddr::V4(Ipv4Addr::new(192, 168, 0, 1)),
+                dns_server: Ipv4Addr::UNSPECIFIED.into(),
+            }
+        );
+    }
 }
diff --git a/proxmox-tui-installer/src/main.rs b/proxmox-tui-installer/src/main.rs
index 341e60c..57a334f 100644
--- a/proxmox-tui-installer/src/main.rs
+++ b/proxmox-tui-installer/src/main.rs
@@ -169,7 +169,7 @@ fn main() {
             bootdisk: BootdiskOptions::defaults_from(&runtime_info.disks[0]),
             timezone: TimezoneOptions::defaults_from(&runtime_info, &locales),
             password: Default::default(),
-            network: NetworkOptions::defaults_from(&setup_info, &runtime_info.network),
+            network: NetworkOptions::defaults_from(&setup_info, &runtime_info.network, None),
             autoreboot: true,
         },
         setup_info,
-- 
2.48.1



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[pve-devel] [PATCH installer 6/6] fix #5811: auto: add option to retrieve FQDN from DHCP configuration

[Christoph Heiss]

Fixes #5811 [0].

Adds a new option to the answer file for specifying to use the
DHCP-provided hostname and domain. For the domain, an additional
fallback/default can be specified, in case the DHCP server only provides
hostnames. The hostname is always required in this mode.

The addition to the answer file format is done in a backwards-compatible
way.

Users can now either directly specify the desired FQDN in the answer
file as before through

```
[global]
fqdn = "node.example.local"
```

or, with the new mechanism, if the DHCP server provides all the
information already:

```
[global]
fqdn.source = "from-dhcp"
```

or additionally with a custom domain:

```
[global.fqdn]
source = "from-dhcp"
domain = "custom.domain.local"
```

The DHCP-provided hostname and domain are already provided to the
auto-installer through the runtime environment, so its just a matter of
using them.

The test suite is extended quite a bit, to cover all the different
cases.

[0] https://bugzilla.proxmox.com/show_bug.cgi?id=5811

Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
---
 proxmox-auto-installer/src/answer.rs          | 36 +++++++++++++++++-
 proxmox-auto-installer/src/utils.rs           | 37 ++++++++++++++++---
 proxmox-auto-installer/tests/parse-answer.rs  |  8 ++++
 .../parse_answer/fqdn_from_dhcp.json          | 19 ++++++++++
 .../parse_answer/fqdn_from_dhcp.toml          | 14 +++++++
 ...cp_no_dhcp_domain_with_default_domain.json | 19 ++++++++++
 ...cp_no_dhcp_domain_with_default_domain.toml | 17 +++++++++
 ...ll_fqdn_from_dhcp_with_default_domain.json | 19 ++++++++++
 ...ll_fqdn_from_dhcp_with_default_domain.toml | 17 +++++++++
 .../fqdn_from_dhcp_no_default_domain.json     |  3 ++
 ...n_from_dhcp_no_default_domain.run-env.json |  1 +
 .../fqdn_from_dhcp_no_default_domain.toml     | 14 +++++++
 .../parse_answer_fail/fqdn_hostname_only.json |  3 ++
 .../parse_answer_fail/fqdn_hostname_only.toml | 14 +++++++
 .../parse_answer_fail/no_fqdn_from_dhcp.json  |  3 ++
 .../no_fqdn_from_dhcp.run-env.json            |  1 +
 .../parse_answer_fail/no_fqdn_from_dhcp.toml  | 14 +++++++
 .../tests/resources/run-env-info.json         |  2 +-
 proxmox-post-hook/src/main.rs                 | 19 ++++++++--
 19 files changed, 250 insertions(+), 10 deletions(-)
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp.toml
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp_no_dhcp_domain_with_default_domain.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp_no_dhcp_domain_with_default_domain.toml
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer/full_fqdn_from_dhcp_with_default_domain.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer/full_fqdn_from_dhcp_with_default_domain.toml
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.run-env.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.toml
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_hostname_only.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_hostname_only.toml
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.run-env.json
 create mode 100644 proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.toml

diff --git a/proxmox-auto-installer/src/answer.rs b/proxmox-auto-installer/src/answer.rs
index c11818e..dd7fa06 100644
--- a/proxmox-auto-installer/src/answer.rs
+++ b/proxmox-auto-installer/src/answer.rs
@@ -46,7 +46,8 @@ impl Answer {
 #[serde(rename_all = "kebab-case", deny_unknown_fields)]
 pub struct Global {
     pub country: String,
-    pub fqdn: Fqdn,
+    /// FQDN to set for the installed system.
+    pub fqdn: FqdnConfig,
     pub keyboard: KeyboardLayout,
     pub mailto: String,
     pub timezone: String,
@@ -60,6 +61,39 @@ pub struct Global {
     pub root_ssh_keys: Vec<String>,
 }
 
+/// Allow the user to either set the FQDN of the installation to either some
+/// fixed value or retrieve it dynamically via e.g.DHCP.
+#[derive(Clone, Deserialize, Debug)]
+#[serde(
+    untagged,
+    expecting = "either a fully-qualified domain name or extendend configuration for usage with DHCP must be specified"
+)]
+pub enum FqdnConfig {
+    /// Sets the FQDN to the exact value.
+    Simple(Fqdn),
+    /// Extended configuration, e.g. to use hostname and domain from DHCP.
+    Extended(FqdnExtendedConfig),
+}
+
+/// Extended configuration for retrieving the FQDN from external sources.
+#[derive(Clone, Deserialize, Debug)]
+#[serde(rename_all = "kebab-case", deny_unknown_fields)]
+pub struct FqdnExtendedConfig {
+    /// Source to gather the FQDN from.
+    #[serde(default)]
+    pub source: FqdnSourceMode,
+    /// Domain to use if none is received via DHCP.
+    pub domain: Option<String>,
+}
+
+/// Describes the source to retrieve the FQDN of the installation.
+#[derive(Clone, Deserialize, Debug, Default, PartialEq)]
+#[serde(rename_all = "kebab-case", deny_unknown_fields)]
+pub enum FqdnSourceMode {
+    #[default]
+    FromDhcp,
+}
+
 #[derive(Clone, Deserialize, Debug)]
 #[serde(rename_all = "kebab-case", deny_unknown_fields)]
 pub struct PostNotificationHookInfo {
diff --git a/proxmox-auto-installer/src/utils.rs b/proxmox-auto-installer/src/utils.rs
index cf072b8..5bff8b2 100644
--- a/proxmox-auto-installer/src/utils.rs
+++ b/proxmox-auto-installer/src/utils.rs
@@ -5,7 +5,9 @@ use log::info;
 use std::{collections::BTreeMap, process::Command};
 
 use crate::{
-    answer::{self, Answer, FirstBootHookSourceMode},
+    answer::{
+        self, Answer, FirstBootHookSourceMode, FqdnConfig, FqdnExtendedConfig, FqdnSourceMode,
+    },
     udevinfo::UdevInfo,
 };
 use proxmox_installer_common::{
@@ -24,12 +26,37 @@ fn get_network_settings(
     runtime_info: &RuntimeInfo,
     setup_info: &SetupInfo,
 ) -> Result<NetworkOptions> {
-    let mut network_options = NetworkOptions::defaults_from(setup_info, &runtime_info.network, None);
+    info!("Setting up network configuration");
 
-    info!("Setting network configuration");
+    let mut network_options = match &answer.global.fqdn {
+        // If the user set a static FQDN in the answer file, override it
+        FqdnConfig::Simple(name) => {
+            let mut opts = NetworkOptions::defaults_from(setup_info, &runtime_info.network, None);
+            opts.fqdn = name.to_owned();
+            opts
+        }
+        FqdnConfig::Extended(FqdnExtendedConfig {
+            source: FqdnSourceMode::FromDhcp,
+            domain,
+        }) => {
+            // A FQDN from DHCP information and/or defaults is constructed in
+            // `NetworkOptions::defaults_from()` below, just check that the DHCP server actually
+            // provided a hostname.
+            if runtime_info.network.hostname.is_none() {
+                bail!(
+                    "`global.fqdn.source` set to \"from-dhcp\", but DHCP server did not provide a hostname!"
+                );
+            }
 
-    // Always use the FQDN from the answer file
-    network_options.fqdn = answer.global.fqdn.clone();
+            // Either a domain must be received from the DHCP server or it must be set manually
+            // (even just as fallback) in the answer file.
+            if runtime_info.network.dns.domain.is_none() && domain.is_none() {
+                bail!("no domain received from DHCP server and `global.fqdn.domain` is unset!");
+            }
+
+            NetworkOptions::defaults_from(setup_info, &runtime_info.network, domain.as_deref())
+        }
+    };
 
     if let answer::NetworkSettings::Manual(settings) = &answer.network.network_settings {
         network_options.address = settings.cidr.clone();
diff --git a/proxmox-auto-installer/tests/parse-answer.rs b/proxmox-auto-installer/tests/parse-answer.rs
index 57e20b3..34bc969 100644
--- a/proxmox-auto-installer/tests/parse-answer.rs
+++ b/proxmox-auto-installer/tests/parse-answer.rs
@@ -116,12 +116,16 @@ mod tests {
 
         declare_tests!(
             run_named_test,
+            // Keep below entries alphabetically sorted
             btrfs,
             btrfs_raid_level_uppercase,
             disk_match,
             disk_match_all,
             disk_match_any,
             first_boot,
+            fqdn_from_dhcp,
+            fqdn_from_dhcp_no_dhcp_domain_with_default_domain,
+            full_fqdn_from_dhcp_with_default_domain,
             hashed_root_password,
             minimal,
             nic_matching,
@@ -136,7 +140,11 @@ mod tests {
 
         declare_tests!(
             run_named_fail_parse_test,
+            // Keep below entries alphabetically sorted
             both_password_and_hashed_set,
+            fqdn_from_dhcp_no_default_domain,
+            fqdn_hostname_only,
+            no_fqdn_from_dhcp,
             no_root_password_set,
             short_password
         );
diff --git a/proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp.json b/proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp.json
new file mode 100644
index 0000000..5ec6656
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp.json
@@ -0,0 +1,19 @@
+{
+  "autoreboot": 1,
+  "cidr": "192.168.1.114/24",
+  "country": "at",
+  "dns": "192.168.1.254",
+  "domain": "test.local",
+  "filesys": "ext4",
+  "gateway": "192.168.1.1",
+  "hdsize": 223.57088470458984,
+  "existing_storage_auto_rename": 1,
+  "hostname": "pveauto",
+  "keymap": "de",
+  "mailto": "mail@no.invalid",
+  "mngmt_nic": "eno1",
+  "root_password": { "plain": "12345678" },
+  "target_hd": "/dev/sda",
+  "timezone": "Europe/Vienna",
+  "first_boot": { "enabled": 0 }
+}
diff --git a/proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp.toml b/proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp.toml
new file mode 100644
index 0000000..9d13a5f
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp.toml
@@ -0,0 +1,14 @@
+[global]
+keyboard = "de"
+country = "at"
+fqdn.source = "from-dhcp"
+mailto = "mail@no.invalid"
+timezone = "Europe/Vienna"
+root_password = "12345678"
+
+[network]
+source = "from-dhcp"
+
+[disk-setup]
+filesystem = "ext4"
+disk_list = ["sda"]
diff --git a/proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp_no_dhcp_domain_with_default_domain.json b/proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp_no_dhcp_domain_with_default_domain.json
new file mode 100644
index 0000000..7ed46a2
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp_no_dhcp_domain_with_default_domain.json
@@ -0,0 +1,19 @@
+{
+  "autoreboot": 1,
+  "cidr": "192.168.1.114/24",
+  "country": "at",
+  "dns": "192.168.1.254",
+  "domain": "custom.local",
+  "filesys": "ext4",
+  "gateway": "192.168.1.1",
+  "hdsize": 223.57088470458984,
+  "existing_storage_auto_rename": 1,
+  "hostname": "pveauto",
+  "keymap": "de",
+  "mailto": "mail@no.invalid",
+  "mngmt_nic": "eno1",
+  "root_password": { "plain": "12345678" },
+  "target_hd": "/dev/sda",
+  "timezone": "Europe/Vienna",
+  "first_boot": { "enabled": 0 }
+}
diff --git a/proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp_no_dhcp_domain_with_default_domain.toml b/proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp_no_dhcp_domain_with_default_domain.toml
new file mode 100644
index 0000000..8fbbede
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer/fqdn_from_dhcp_no_dhcp_domain_with_default_domain.toml
@@ -0,0 +1,17 @@
+[global]
+keyboard = "de"
+country = "at"
+mailto = "mail@no.invalid"
+timezone = "Europe/Vienna"
+root_password = "12345678"
+
+[global.fqdn]
+source = "from-dhcp"
+domain = "custom.local"
+
+[network]
+source = "from-dhcp"
+
+[disk-setup]
+filesystem = "ext4"
+disk_list = ["sda"]
diff --git a/proxmox-auto-installer/tests/resources/parse_answer/full_fqdn_from_dhcp_with_default_domain.json b/proxmox-auto-installer/tests/resources/parse_answer/full_fqdn_from_dhcp_with_default_domain.json
new file mode 100644
index 0000000..7ed46a2
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer/full_fqdn_from_dhcp_with_default_domain.json
@@ -0,0 +1,19 @@
+{
+  "autoreboot": 1,
+  "cidr": "192.168.1.114/24",
+  "country": "at",
+  "dns": "192.168.1.254",
+  "domain": "custom.local",
+  "filesys": "ext4",
+  "gateway": "192.168.1.1",
+  "hdsize": 223.57088470458984,
+  "existing_storage_auto_rename": 1,
+  "hostname": "pveauto",
+  "keymap": "de",
+  "mailto": "mail@no.invalid",
+  "mngmt_nic": "eno1",
+  "root_password": { "plain": "12345678" },
+  "target_hd": "/dev/sda",
+  "timezone": "Europe/Vienna",
+  "first_boot": { "enabled": 0 }
+}
diff --git a/proxmox-auto-installer/tests/resources/parse_answer/full_fqdn_from_dhcp_with_default_domain.toml b/proxmox-auto-installer/tests/resources/parse_answer/full_fqdn_from_dhcp_with_default_domain.toml
new file mode 100644
index 0000000..8fbbede
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer/full_fqdn_from_dhcp_with_default_domain.toml
@@ -0,0 +1,17 @@
+[global]
+keyboard = "de"
+country = "at"
+mailto = "mail@no.invalid"
+timezone = "Europe/Vienna"
+root_password = "12345678"
+
+[global.fqdn]
+source = "from-dhcp"
+domain = "custom.local"
+
+[network]
+source = "from-dhcp"
+
+[disk-setup]
+filesystem = "ext4"
+disk_list = ["sda"]
diff --git a/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.json b/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.json
new file mode 100644
index 0000000..da7850f
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.json
@@ -0,0 +1,3 @@
+{
+    "error": "no domain received from DHCP server and `global.fqdn.domain` is unset!"
+}
diff --git a/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.run-env.json b/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.run-env.json
new file mode 100644
index 0000000..eb17092
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.run-env.json
@@ -0,0 +1 @@
+{"boot_type":"efi","country":"at","disks":[[0,"/dev/nvme0n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme0n1"],[1,"/dev/nvme1n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme1n1"],[2,"/dev/nvme2n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme2n1"],[3,"/dev/nvme3n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme3n1"],[4,"/dev/nvme4n1",976773168,"Samsung SSD 970 EVO Plus 500GB",512,"/sys/block/nvme4n1"],[5,"/dev/nvme5n1",732585168,"INTEL SSDPED1K375GA",512,"/sys/block/nvme5n1"],[6,"/dev/sda",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sda"],[7,"/dev/sdb",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sdb"],[8,"/dev/sdc",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sdc"],[9,"/dev/sdd",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sdd"]],"hvm_supported":1,"ipconf":{"default":"4","dnsserver":"192.168.1.254","domain":null,"gateway":"192.168.1.1","ifaces":{"10":{"driver":"mlx5_core","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac"
 :"24:8a:07:1e:05:bd","name":"enp193s0f1np1","state":"DOWN"},"2":{"driver":"igb","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"a0:36:9f:0a:b3:82","name":"enp65s0f0","state":"DOWN"},"3":{"driver":"igb","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"a0:36:9f:0a:b3:83","name":"enp65s0f1","state":"DOWN"},"4":{"driver":"igb","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","inet":{"addr":"192.168.1.114","mask":"255.255.240.0","prefix":20},"mac":"b4:2e:99:ac:ad:b4","name":"eno1","state":"UP"},"5":{"driver":"cdc_ether","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","mac":"5a:47:32:dd:c7:47","name":"enx5a4732ddc747","state":"UNKNOWN"},"6":{"driver":"igb","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","mac":"b4:2e:99:ac:ad:b5","name":"eno2","state":"UP"},"7":{"driver":"mlx5_core","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"1c:34:da:5c:5e:24","name":"enp129s0f0np0","state":"DOWN"},"8":{"driver":"mlx5_core","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"1c:34:da:5c:5e:25","name":"enp129s0f1n
 p1","state":"DOWN"},"9":{"driver":"mlx5_core","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","mac":"24:8a:07:1e:05:bc","name":"enp193s0f0np0","state":"UP"}}},"kernel_cmdline":"BOOT_IMAGE=/boot/linux26 ro ramdisk_size=16777216 rw splash=verbose proxdebug vga=788","network":{"hostname":"pveauto","dns":{"dns":["192.168.1.254"],"domain":null},"interfaces":{"eno1":{"addresses":[{"address":"192.168.1.114","family":"inet","prefix":24}],"index":4,"mac":"b4:2e:99:ac:ad:b4","name":"eno1","state":"UP"},"eno2":{"index":6,"mac":"b4:2e:99:ac:ad:b5","name":"eno2","state":"UP"},"enp129s0f0np0":{"index":7,"mac":"1c:34:da:5c:5e:24","name":"enp129s0f0np0","state":"DOWN"},"enp129s0f1np1":{"index":8,"mac":"1c:34:da:5c:5e:25","name":"enp129s0f1np1","state":"DOWN"},"enp193s0f0np0":{"index":9,"mac":"24:8a:07:1e:05:bc","name":"enp193s0f0np0","state":"UP"},"enp193s0f1np1":{"index":10,"mac":"24:8a:07:1e:05:bd","name":"enp193s0f1np1","state":"DOWN"},"enp65s0f0":{"index":2,"mac":"a0:36:9f:0a:b3:82","name":"enp65s0f0
 ","state":"DOWN"},"enp65s0f1":{"index":3,"mac":"a0:36:9f:0a:b3:83","name":"enp65s0f1","state":"DOWN"},"enx5a4732ddc747":{"index":5,"mac":"5a:47:32:dd:c7:47","name":"enx5a4732ddc747","state":"UNKNOWN"}},"routes":{"gateway4":{"dev":"eno1","gateway":"192.168.1.1"}}},"total_memory":257597}
diff --git a/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.toml b/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.toml
new file mode 100644
index 0000000..9d13a5f
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_from_dhcp_no_default_domain.toml
@@ -0,0 +1,14 @@
+[global]
+keyboard = "de"
+country = "at"
+fqdn.source = "from-dhcp"
+mailto = "mail@no.invalid"
+timezone = "Europe/Vienna"
+root_password = "12345678"
+
+[network]
+source = "from-dhcp"
+
+[disk-setup]
+filesystem = "ext4"
+disk_list = ["sda"]
diff --git a/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_hostname_only.json b/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_hostname_only.json
new file mode 100644
index 0000000..5293b40
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_hostname_only.json
@@ -0,0 +1,3 @@
+{
+  "parse-error": "error parsing answer.toml: either a fully-qualified domain name or extendend configuration for usage with DHCP must be specified"
+}
diff --git a/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_hostname_only.toml b/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_hostname_only.toml
new file mode 100644
index 0000000..a0a22ef
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer_fail/fqdn_hostname_only.toml
@@ -0,0 +1,14 @@
+[global]
+keyboard = "de"
+country = "at"
+fqdn = "foobar"
+mailto = "mail@no.invalid"
+timezone = "Europe/Vienna"
+root_password = "12345678"
+
+[network]
+source = "from-dhcp"
+
+[disk-setup]
+filesystem = "ext4"
+disk_list = ["sda"]
diff --git a/proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.json b/proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.json
new file mode 100644
index 0000000..49a64e5
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.json
@@ -0,0 +1,3 @@
+{
+    "error": "`global.fqdn.source` set to \"from-dhcp\", but DHCP server did not provide a hostname!"
+}
diff --git a/proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.run-env.json b/proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.run-env.json
new file mode 100644
index 0000000..6762470
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.run-env.json
@@ -0,0 +1 @@
+{"boot_type":"efi","country":"at","disks":[[0,"/dev/nvme0n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme0n1"],[1,"/dev/nvme1n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme1n1"],[2,"/dev/nvme2n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme2n1"],[3,"/dev/nvme3n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme3n1"],[4,"/dev/nvme4n1",976773168,"Samsung SSD 970 EVO Plus 500GB",512,"/sys/block/nvme4n1"],[5,"/dev/nvme5n1",732585168,"INTEL SSDPED1K375GA",512,"/sys/block/nvme5n1"],[6,"/dev/sda",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sda"],[7,"/dev/sdb",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sdb"],[8,"/dev/sdc",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sdc"],[9,"/dev/sdd",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sdd"]],"hvm_supported":1,"ipconf":{"default":"4","dnsserver":"192.168.1.254","domain":null,"gateway":"192.168.1.1","ifaces":{"10":{"driver":"mlx5_core","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac"
 :"24:8a:07:1e:05:bd","name":"enp193s0f1np1","state":"DOWN"},"2":{"driver":"igb","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"a0:36:9f:0a:b3:82","name":"enp65s0f0","state":"DOWN"},"3":{"driver":"igb","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"a0:36:9f:0a:b3:83","name":"enp65s0f1","state":"DOWN"},"4":{"driver":"igb","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","inet":{"addr":"192.168.1.114","mask":"255.255.240.0","prefix":20},"mac":"b4:2e:99:ac:ad:b4","name":"eno1","state":"UP"},"5":{"driver":"cdc_ether","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","mac":"5a:47:32:dd:c7:47","name":"enx5a4732ddc747","state":"UNKNOWN"},"6":{"driver":"igb","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","mac":"b4:2e:99:ac:ad:b5","name":"eno2","state":"UP"},"7":{"driver":"mlx5_core","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"1c:34:da:5c:5e:24","name":"enp129s0f0np0","state":"DOWN"},"8":{"driver":"mlx5_core","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"1c:34:da:5c:5e:25","name":"enp129s0f1n
 p1","state":"DOWN"},"9":{"driver":"mlx5_core","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","mac":"24:8a:07:1e:05:bc","name":"enp193s0f0np0","state":"UP"}}},"kernel_cmdline":"BOOT_IMAGE=/boot/linux26 ro ramdisk_size=16777216 rw splash=verbose proxdebug vga=788","network":{"dns":{"dns":["192.168.1.254"],"domain":null},"interfaces":{"eno1":{"addresses":[{"address":"192.168.1.114","family":"inet","prefix":24}],"index":4,"mac":"b4:2e:99:ac:ad:b4","name":"eno1","state":"UP"},"eno2":{"index":6,"mac":"b4:2e:99:ac:ad:b5","name":"eno2","state":"UP"},"enp129s0f0np0":{"index":7,"mac":"1c:34:da:5c:5e:24","name":"enp129s0f0np0","state":"DOWN"},"enp129s0f1np1":{"index":8,"mac":"1c:34:da:5c:5e:25","name":"enp129s0f1np1","state":"DOWN"},"enp193s0f0np0":{"index":9,"mac":"24:8a:07:1e:05:bc","name":"enp193s0f0np0","state":"UP"},"enp193s0f1np1":{"index":10,"mac":"24:8a:07:1e:05:bd","name":"enp193s0f1np1","state":"DOWN"},"enp65s0f0":{"index":2,"mac":"a0:36:9f:0a:b3:82","name":"enp65s0f0","state":"DOWN"},"en
 p65s0f1":{"index":3,"mac":"a0:36:9f:0a:b3:83","name":"enp65s0f1","state":"DOWN"},"enx5a4732ddc747":{"index":5,"mac":"5a:47:32:dd:c7:47","name":"enx5a4732ddc747","state":"UNKNOWN"}},"routes":{"gateway4":{"dev":"eno1","gateway":"192.168.1.1"}}},"total_memory":257597}
diff --git a/proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.toml b/proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.toml
new file mode 100644
index 0000000..9d13a5f
--- /dev/null
+++ b/proxmox-auto-installer/tests/resources/parse_answer_fail/no_fqdn_from_dhcp.toml
@@ -0,0 +1,14 @@
+[global]
+keyboard = "de"
+country = "at"
+fqdn.source = "from-dhcp"
+mailto = "mail@no.invalid"
+timezone = "Europe/Vienna"
+root_password = "12345678"
+
+[network]
+source = "from-dhcp"
+
+[disk-setup]
+filesystem = "ext4"
+disk_list = ["sda"]
diff --git a/proxmox-auto-installer/tests/resources/run-env-info.json b/proxmox-auto-installer/tests/resources/run-env-info.json
index 6762470..2687a8a 100644
--- a/proxmox-auto-installer/tests/resources/run-env-info.json
+++ b/proxmox-auto-installer/tests/resources/run-env-info.json
@@ -1 +1 @@
-{"boot_type":"efi","country":"at","disks":[[0,"/dev/nvme0n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme0n1"],[1,"/dev/nvme1n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme1n1"],[2,"/dev/nvme2n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme2n1"],[3,"/dev/nvme3n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme3n1"],[4,"/dev/nvme4n1",976773168,"Samsung SSD 970 EVO Plus 500GB",512,"/sys/block/nvme4n1"],[5,"/dev/nvme5n1",732585168,"INTEL SSDPED1K375GA",512,"/sys/block/nvme5n1"],[6,"/dev/sda",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sda"],[7,"/dev/sdb",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sdb"],[8,"/dev/sdc",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sdc"],[9,"/dev/sdd",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sdd"]],"hvm_supported":1,"ipconf":{"default":"4","dnsserver":"192.168.1.254","domain":null,"gateway":"192.168.1.1","ifaces":{"10":{"driver":"mlx5_core","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac"
 :"24:8a:07:1e:05:bd","name":"enp193s0f1np1","state":"DOWN"},"2":{"driver":"igb","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"a0:36:9f:0a:b3:82","name":"enp65s0f0","state":"DOWN"},"3":{"driver":"igb","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"a0:36:9f:0a:b3:83","name":"enp65s0f1","state":"DOWN"},"4":{"driver":"igb","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","inet":{"addr":"192.168.1.114","mask":"255.255.240.0","prefix":20},"mac":"b4:2e:99:ac:ad:b4","name":"eno1","state":"UP"},"5":{"driver":"cdc_ether","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","mac":"5a:47:32:dd:c7:47","name":"enx5a4732ddc747","state":"UNKNOWN"},"6":{"driver":"igb","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","mac":"b4:2e:99:ac:ad:b5","name":"eno2","state":"UP"},"7":{"driver":"mlx5_core","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"1c:34:da:5c:5e:24","name":"enp129s0f0np0","state":"DOWN"},"8":{"driver":"mlx5_core","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"1c:34:da:5c:5e:25","name":"enp129s0f1n
 p1","state":"DOWN"},"9":{"driver":"mlx5_core","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","mac":"24:8a:07:1e:05:bc","name":"enp193s0f0np0","state":"UP"}}},"kernel_cmdline":"BOOT_IMAGE=/boot/linux26 ro ramdisk_size=16777216 rw splash=verbose proxdebug vga=788","network":{"dns":{"dns":["192.168.1.254"],"domain":null},"interfaces":{"eno1":{"addresses":[{"address":"192.168.1.114","family":"inet","prefix":24}],"index":4,"mac":"b4:2e:99:ac:ad:b4","name":"eno1","state":"UP"},"eno2":{"index":6,"mac":"b4:2e:99:ac:ad:b5","name":"eno2","state":"UP"},"enp129s0f0np0":{"index":7,"mac":"1c:34:da:5c:5e:24","name":"enp129s0f0np0","state":"DOWN"},"enp129s0f1np1":{"index":8,"mac":"1c:34:da:5c:5e:25","name":"enp129s0f1np1","state":"DOWN"},"enp193s0f0np0":{"index":9,"mac":"24:8a:07:1e:05:bc","name":"enp193s0f0np0","state":"UP"},"enp193s0f1np1":{"index":10,"mac":"24:8a:07:1e:05:bd","name":"enp193s0f1np1","state":"DOWN"},"enp65s0f0":{"index":2,"mac":"a0:36:9f:0a:b3:82","name":"enp65s0f0","state":"DOWN"},"en
 p65s0f1":{"index":3,"mac":"a0:36:9f:0a:b3:83","name":"enp65s0f1","state":"DOWN"},"enx5a4732ddc747":{"index":5,"mac":"5a:47:32:dd:c7:47","name":"enx5a4732ddc747","state":"UNKNOWN"}},"routes":{"gateway4":{"dev":"eno1","gateway":"192.168.1.1"}}},"total_memory":257597}
+{"boot_type":"efi","country":"at","disks":[[0,"/dev/nvme0n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme0n1"],[1,"/dev/nvme1n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme1n1"],[2,"/dev/nvme2n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme2n1"],[3,"/dev/nvme3n1",6251233968,"Micron_9300_MTFDHAL3T2TDR",4096,"/sys/block/nvme3n1"],[4,"/dev/nvme4n1",976773168,"Samsung SSD 970 EVO Plus 500GB",512,"/sys/block/nvme4n1"],[5,"/dev/nvme5n1",732585168,"INTEL SSDPED1K375GA",512,"/sys/block/nvme5n1"],[6,"/dev/sda",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sda"],[7,"/dev/sdb",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sdb"],[8,"/dev/sdc",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sdc"],[9,"/dev/sdd",468862128,"SAMSUNG MZ7KM240",512,"/sys/block/sdd"]],"hvm_supported":1,"ipconf":{"default":"4","dnsserver":"192.168.1.254","domain":"test.local","gateway":"192.168.1.1","ifaces":{"10":{"driver":"mlx5_core","flags":"NO-CARRIER,BROADCAST,MULTICAST,U
 P","mac":"24:8a:07:1e:05:bd","name":"enp193s0f1np1","state":"DOWN"},"2":{"driver":"igb","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"a0:36:9f:0a:b3:82","name":"enp65s0f0","state":"DOWN"},"3":{"driver":"igb","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"a0:36:9f:0a:b3:83","name":"enp65s0f1","state":"DOWN"},"4":{"driver":"igb","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","inet":{"addr":"192.168.1.114","mask":"255.255.240.0","prefix":20},"mac":"b4:2e:99:ac:ad:b4","name":"eno1","state":"UP"},"5":{"driver":"cdc_ether","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","mac":"5a:47:32:dd:c7:47","name":"enx5a4732ddc747","state":"UNKNOWN"},"6":{"driver":"igb","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","mac":"b4:2e:99:ac:ad:b5","name":"eno2","state":"UP"},"7":{"driver":"mlx5_core","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"1c:34:da:5c:5e:24","name":"enp129s0f0np0","state":"DOWN"},"8":{"driver":"mlx5_core","flags":"NO-CARRIER,BROADCAST,MULTICAST,UP","mac":"1c:34:da:5c:5e:25","name":"enp
 129s0f1np1","state":"DOWN"},"9":{"driver":"mlx5_core","flags":"BROADCAST,MULTICAST,UP,LOWER_UP","mac":"24:8a:07:1e:05:bc","name":"enp193s0f0np0","state":"UP"}}},"kernel_cmdline":"BOOT_IMAGE=/boot/linux26 ro ramdisk_size=16777216 rw splash=verbose proxdebug vga=788","network":{"hostname":"pveauto","dns":{"dns":["192.168.1.254"],"domain":"test.local"},"interfaces":{"eno1":{"addresses":[{"address":"192.168.1.114","family":"inet","prefix":24}],"index":4,"mac":"b4:2e:99:ac:ad:b4","name":"eno1","state":"UP"},"eno2":{"index":6,"mac":"b4:2e:99:ac:ad:b5","name":"eno2","state":"UP"},"enp129s0f0np0":{"index":7,"mac":"1c:34:da:5c:5e:24","name":"enp129s0f0np0","state":"DOWN"},"enp129s0f1np1":{"index":8,"mac":"1c:34:da:5c:5e:25","name":"enp129s0f1np1","state":"DOWN"},"enp193s0f0np0":{"index":9,"mac":"24:8a:07:1e:05:bc","name":"enp193s0f0np0","state":"UP"},"enp193s0f1np1":{"index":10,"mac":"24:8a:07:1e:05:bd","name":"enp193s0f1np1","state":"DOWN"},"enp65s0f0":{"index":2,"mac":"a0:36:9f:0a:b3:82","
 name":"enp65s0f0","state":"DOWN"},"enp65s0f1":{"index":3,"mac":"a0:36:9f:0a:b3:83","name":"enp65s0f1","state":"DOWN"},"enx5a4732ddc747":{"index":5,"mac":"5a:47:32:dd:c7:47","name":"enx5a4732ddc747","state":"UNKNOWN"}},"routes":{"gateway4":{"dev":"eno1","gateway":"192.168.1.1"}}},"total_memory":257597}
diff --git a/proxmox-post-hook/src/main.rs b/proxmox-post-hook/src/main.rs
index d03ce21..959a0d7 100644
--- a/proxmox-post-hook/src/main.rs
+++ b/proxmox-post-hook/src/main.rs
@@ -21,11 +21,11 @@ use std::{
 
 use anyhow::{Context, Result, anyhow, bail};
 use proxmox_auto_installer::{
-    answer::{Answer, PostNotificationHookInfo},
+    answer::{Answer, FqdnConfig, FqdnExtendedConfig, FqdnSourceMode, PostNotificationHookInfo},
     udevinfo::{UdevInfo, UdevProperties},
 };
 use proxmox_installer_common::{
-    options::{Disk, FsType},
+    options::{Disk, FsType, NetworkOptions},
     setup::{
         BootType, InstallConfig, IsoInfo, ProxmoxProduct, RuntimeInfo, SetupInfo,
         load_installer_setup_files,
@@ -247,6 +247,19 @@ impl PostHookInfo {
                 .and_then(|r| Ok(String::from_utf8(r.stdout)?))
         };
 
+        let fqdn = match &answer.global.fqdn {
+            FqdnConfig::Simple(name) => name.to_string(),
+            FqdnConfig::Extended(FqdnExtendedConfig {
+                source: FqdnSourceMode::FromDhcp,
+                domain,
+            }) => NetworkOptions::construct_fqdn(
+                &run_env.network,
+                setup_info.config.product.default_hostname(),
+                domain.as_deref(),
+            )
+            .to_string(),
+        };
+
         Ok(Self {
             schema: PostHookInfoSchema::default(),
             debian_version: read_file("/etc/debian_version")?,
@@ -260,7 +273,7 @@ impl PostHookInfo {
             cpu_info: Self::gather_cpu_info(&run_env)?,
             dmi: SystemDMI::get()?,
             filesystem: answer.disks.fs_type,
-            fqdn: answer.global.fqdn.to_string(),
+            fqdn,
             machine_id: read_file("/etc/machine-id")?,
             disks: Self::gather_disks(&config, &run_env, &udev)?,
             network_interfaces: Self::gather_nic(&config, &run_env, &udev)?,
-- 
2.48.1



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Re: [pve-devel] [PATCH installer 6/6] fix #5811: auto: add option to retrieve FQDN from DHCP configuration

[Daniel Kral]

On 3/27/25 16:17, Christoph Heiss wrote:
> The test suite is extended quite a bit, to cover all the different
> cases.
> 
> [0] https://bugzilla.proxmox.com/show_bug.cgi?id=5811
> 
> Signed-off-by: Christoph Heiss <c.heiss@proxmox.com>
> ---
>   proxmox-auto-installer/src/answer.rs          | 36 +++++++++++++++++-
>   proxmox-auto-installer/src/utils.rs           | 37 ++++++++++++++++---
>   proxmox-auto-installer/tests/parse-answer.rs  |  8 ++++
>   .../parse_answer/fqdn_from_dhcp.json          | 19 ++++++++++
>   .../parse_answer/fqdn_from_dhcp.toml          | 14 +++++++
>   ...cp_no_dhcp_domain_with_default_domain.json | 19 ++++++++++
>   ...cp_no_dhcp_domain_with_default_domain.toml | 17 +++++++++
>   ...ll_fqdn_from_dhcp_with_default_domain.json | 19 ++++++++++
>   ...ll_fqdn_from_dhcp_with_default_domain.toml | 17 +++++++++
>   .../fqdn_from_dhcp_no_default_domain.json     |  3 ++
>   ...n_from_dhcp_no_default_domain.run-env.json |  1 +
>   .../fqdn_from_dhcp_no_default_domain.toml     | 14 +++++++
>   .../parse_answer_fail/fqdn_hostname_only.json |  3 ++
>   .../parse_answer_fail/fqdn_hostname_only.toml | 14 +++++++
>   .../parse_answer_fail/no_fqdn_from_dhcp.json  |  3 ++
>   .../no_fqdn_from_dhcp.run-env.json            |  1 +
>   .../parse_answer_fail/no_fqdn_from_dhcp.toml  | 14 +++++++
>   .../tests/resources/run-env-info.json         |  2 +-
>   proxmox-post-hook/src/main.rs                 | 19 ++++++++--
>   19 files changed, 250 insertions(+), 10 deletions(-)

Just tried to apply this, and it seems like the diff for the JSON files 
is malformed as it splits the changes at roughly 1000 characters for the 
changes to run-env*.json files:

* run-env-info.json
* no_fqdn_from_dhcp.run-env.json
* fqdn_from_dhcp_no_default_domain.run-env.json

I'm not sure what could have caused this, but after manually fixing 
this, the rest of the patch applies cleanly and the tests run fine.


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Re: [pve-devel] [PATCH installer 6/6] fix #5811: auto: add option to retrieve FQDN from DHCP configuration

[Christoph Heiss]

Thanks for testing!

On Tue Apr 1, 2025 at 3:15 PM CEST, Daniel Kral wrote:
[..]
> Just tried to apply this, and it seems like the diff for the JSON files
> is malformed as it splits the changes at roughly 1000 characters for the
> changes to run-env*.json files:
>
> * run-env-info.json
> * no_fqdn_from_dhcp.run-env.json
> * fqdn_from_dhcp_no_default_domain.run-env.json

Right, thanks for noticing! That definitely is broken, unfortunately.
Probably a hard-limit somewhere with 1000 characters per line along the
line.

The file directly from `git format-patch` looks fine, with no extra
newlines. Sent the patches using `git send-email` as usual, so not sure
where it went wrong.
I'll see if I can reproduce it locally for me and fix it up for a v2.

(Otherwise I'll just pretty-print/format these JSON files for v2.)

>
> I'm not sure what could have caused this, but after manually fixing
> this, the rest of the patch applies cleanly and the tests run fine.



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Re: [pve-devel] [PATCH installer 6/6] fix #5811: auto: add option to retrieve FQDN from DHCP configuration

[Stefan Hanreich]

On 4/1/25 15:25, Christoph Heiss wrote:
> The file directly from `git format-patch` looks fine, with no extra
> newlines. Sent the patches using `git send-email` as usual, so not sure
> where it went wrong.
> I'll see if I can reproduce it locally for me and fix it up for a v2.

I think this happened for me as well once with the firewall patch series
and the mailing list trims / truncates overly long lines iirc.


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Re: [pve-devel] [PATCH installer 6/6] fix #5811: auto: add option to retrieve FQDN from DHCP configuration

[Daniel Kral]

On 4/1/25 15:29, Stefan Hanreich wrote:
> On 4/1/25 15:25, Christoph Heiss wrote:
>> The file directly from `git format-patch` looks fine, with no extra
>> newlines. Sent the patches using `git send-email` as usual, so not sure
>> where it went wrong.
>> I'll see if I can reproduce it locally for me and fix it up for a v2.
> 
> I think this happened for me as well once with the firewall patch series
> and the mailing list trims / truncates overly long lines iirc.

Hm, interesting! Just checked against the patch that created the JSON 
file [0] seems fine there, but admittedly the patch there is encoded in 
base64, could that be a reason for this?

[0] 
https://lore.proxmox.com/pve-devel/20240417123108.212720-14-a.lauterer@proxmox.com/


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Re: [pve-devel] [PATCH installer 6/6] fix #5811: auto: add option to retrieve FQDN from DHCP configuration

[Thomas Lamprecht]

Am 01.04.25 um 15:44 schrieb Daniel Kral:
> On 4/1/25 15:29, Stefan Hanreich wrote:
>> On 4/1/25 15:25, Christoph Heiss wrote:
>>> The file directly from `git format-patch` looks fine, with no extra
>>> newlines. Sent the patches using `git send-email` as usual, so not sure
>>> where it went wrong.
>>> I'll see if I can reproduce it locally for me and fix it up for a v2.
>>
>> I think this happened for me as well once with the firewall patch series
>> and the mailing list trims / truncates overly long lines iirc.
> 
> Hm, interesting! Just checked against the patch that created the JSON 
> file [0] seems fine there, but admittedly the patch there is encoded in 
> base64, could that be a reason for this?
> 
> [0] 
> https://lore.proxmox.com/pve-devel/20240417123108.212720-14-a.lauterer@proxmox.com/

Welcome to the world of email ;-)

SMTP (RFC 2822, replaced by 5322, but same holds true) dictates:

   There are two limits that this specification places on the number of
   characters in a line.  Each line of characters MUST be no more than
   998 characters, and SHOULD be no more than 78 characters, excluding
   the CRLF.

And yes, encoding a message as base64 avoids this as these can be
wrapped at any point, thus avoiding long line lengths in the transport
of the message while allowing longer ones in the message itself.


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Re: [pve-devel] [PATCH installer 0/6] fix #5811: add option to retrieve FQDN from DHCP configuration

[Daniel Kral]

On 3/27/25 16:17, Christoph Heiss wrote:
> Fixes #5811 [0].
> 
> Adds a new option to the answer file for specifying to use the
> DHCP-provided hostname and domain. For the domain, an additional
> fallback/default can be specified, in case the DHCP server only provides
> hostnames. The hostname is always required in this mode.
> 
> The addition to the answer file format is done in a backwards-compatible
> way.
> 
> Users can now specify the following to use the DHCP-provided domain:
> 
> ```
> [global]
> fqdn.source = "from-dhcp"
> ```
> 
> or additionally with a custom domain:
> 
> ```
> [global.fqdn]
> source = "from-dhcp"
> domain = "custom.domain.local"
> ```
> 
> Patches #1 through #4 can all be applied independently, #1 & #4 are pure
> cleanups.
> 
> [0] https://bugzilla.proxmox.com/show_bug.cgi?id=5811
> 
> Diffstat
> ========
> 
> Christoph Heiss (6):
>    auto: utils: avoid a force unwrap()
>    auto: tests: parse-answer: allow per-test runtime env
>    auto: tests: allow testing for serde parse errors of answer files
>    tui, common: move network option tests to correct crate
>    common: options: allow user-supplied domain for network options
>    fix #5811: auto: add option to retrieve FQDN from DHCP configuration

Tested this patch series with setting up a DHCP server through dnsmasq, 
where I set up the dnsmasq with `dhcp-fqdn` and `domain=something.com` 
for the domain part, and `dhcp-host=<MAC>,<IPaddr>,<HOSTNAME>`.

I tested `global.fqdn.source = 'from-dhcp'` with both 
`global.fqdn.domain` set and unset for:

- not setting hostnames nor domain at all -> correctly errors for both,
- setting a hostname but no domain -> correctly errors for unset domain, 
works as expected with fallback domain,
- setting no hostname but a domain -> correctly errors for both,
- setting both a hostname and a domain -> works as expected.

Also tested that for the working cases these are set as the fqdn after 
installation, and also tested that setting `fqdn = "some.local.domain"` 
also still works as expected as before.

Works great!

Just wanted to ask: Would it make sense to also have a fallback for the 
hostname if the DHCP server does only provide a domain but no hostname 
here or should the DHCP provide the full FQDN?

Else, consider this series as:

Tested-by: Daniel Kral <d.kral@proxmox.com>


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Re: [pve-devel] [PATCH installer 0/6] fix #5811: add option to retrieve FQDN from DHCP configuration

[Christoph Heiss]

On Tue Apr 1, 2025 at 3:45 PM CEST, Daniel Kral wrote:
[..]
> Just wanted to ask: Would it make sense to also have a fallback for the
> hostname if the DHCP server does only provide a domain but no hostname
> here or should the DHCP provide the full FQDN?

I thought about that, but it really does not make sense.

Setting `global.fqdn.source = "from-dhcp"` is a option that must be
actively set by the user and it just does not make sense, if the DHCP
does not provide (at least) a hostname.

At this point, the hostname can also be set directly in the answer file
as before, instead of using this option.

>
> Else, consider this series as:
>
> Tested-by: Daniel Kral <d.kral@proxmox.com>

Thanks for testing!


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