From: "Fabian Grünbichler" <f.gruenbichler@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: [pve-devel] [PATCH docs 2/2] ssh: document PVE-specific setup
Date: Thu, 11 Jan 2024 11:51:20 +0100 [thread overview]
Message-ID: <20240111105123.370028-7-f.gruenbichler@proxmox.com> (raw)
In-Reply-To: <20240111105123.370028-1-f.gruenbichler@proxmox.com>
such as adapted configs and managed files.
Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
---
Notes: actual version needs to be inserted!
pvecm.adoc | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/pvecm.adoc b/pvecm.adoc
index 5b5b27b..3a32cfb 100644
--- a/pvecm.adoc
+++ b/pvecm.adoc
@@ -918,6 +918,24 @@ transfer memory and disk contents.
* Storage replication
+SSH setup
+~~~~~~~~~
+
+On {pve} systems, the following changes are made to the SSH configuration/setup:
+
+* the `root` user's SSH client config gets setup to prefer `AES` over `ChaCha20`
+
+* the `root` user's `authorized_keys` file gets linked to
+ `/etc/pve/priv/authorized_keys`, merging all authorized keys within a cluster
+
+* `sshd` is configured to allow logging in as root with a password
+
+NOTE: Older systems might also have `/etc/ssh/ssh_known_hosts` set up as symlink
+pointing to `/etc/pve/priv/known_hosts`, containing a merged version of all
+node host keys. This system was replaced with explicit host key pinning in
+`pve-cluster <<INSERT VERSION>>`, the symlink can be deconfigured if still in
+place by running `pvecm updatecerts --unmerge-known-hosts`.
+
Pitfalls due to automatic execution of `.bashrc` and siblings
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
2.39.2
next prev parent reply other threads:[~2024-01-11 10:52 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-11 10:51 [pve-devel] [PATCH cluster/manager/storage/docs 0/9] fix #4886: improve SSH handling Fabian Grünbichler
2024-01-11 10:51 ` [pve-devel] [PATCH cluster 1/4] fix #4886: write node SSH hostkey to pmxcfs Fabian Grünbichler
2024-01-11 10:51 ` [pve-devel] [PATCH cluster 2/4] fix #4886: SSH: pin node's host key if available Fabian Grünbichler
[not found] ` <mailman.431.1705316883.335.pve-devel@lists.proxmox.com>
2024-01-15 11:51 ` Fabian Grünbichler
[not found] ` <mailman.436.1705329114.335.pve-devel@lists.proxmox.com>
2024-01-16 9:00 ` Fabian Grünbichler
2024-01-11 10:51 ` [pve-devel] [PATCH cluster 3/4] ssh: expose SSH options on their own Fabian Grünbichler
2024-01-11 10:51 ` [pve-devel] [PATCH cluster 4/4] pvecm: stop merging SSH known hosts by default Fabian Grünbichler
2024-01-11 10:51 ` [pve-devel] [PATCH docs 1/2] ssh: make pitfalls a regular section instead of block Fabian Grünbichler
2024-01-11 10:51 ` Fabian Grünbichler [this message]
[not found] ` <mailman.409.1705062826.335.pve-devel@lists.proxmox.com>
2024-01-12 12:40 ` [pve-devel] [PATCH docs 2/2] ssh: document PVE-specific setup Fabian Grünbichler
2024-01-11 10:51 ` [pve-devel] [PATCH manager 1/2] vnc: use SSH command helper Fabian Grünbichler
2024-01-11 10:51 ` [pve-devel] [PATCH manager 2/2] pvesh: " Fabian Grünbichler
2024-01-11 10:51 ` [pve-devel] [PATCH storage 1/1] upload: use SSH helper to get ssh/scp options Fabian Grünbichler
2024-01-12 12:12 ` [pve-devel] [PATCH cluster/manager/storage/docs 0/9] fix #4886: improve SSH handling Fabian Grünbichler
2024-01-15 15:53 ` Hannes Dürr
2024-01-16 10:34 ` Thomas Lamprecht
2024-01-16 10:40 ` Fabian Grünbichler
2024-01-16 10:49 ` Thomas Lamprecht
2024-01-16 11:58 ` Hannes Dürr
2024-04-19 7:11 ` [pve-devel] applied-series: " Thomas Lamprecht
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