From: Thomas Lamprecht <t.lamprecht@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: [pve-devel] applied: [PATCH container 2/5] implement debug start
Date: Wed, 9 Sep 2020 21:12:20 +0200 [thread overview]
Message-ID: <20200909191223.4187564-2-t.lamprecht@proxmox.com> (raw)
In-Reply-To: <20200909191223.4187564-1-t.lamprecht@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
---
src/Makefile | 6 ++++--
src/PVE/API2/LXC/Status.pm | 8 +++++++-
src/PVE/LXC.pm | 10 +++++++---
src/PVE/LXC/Config.pm | 6 ++++++
src/pve-container-debug@.service | 22 ++++++++++++++++++++++
5 files changed, 46 insertions(+), 6 deletions(-)
create mode 100644 src/pve-container-debug@.service
diff --git a/src/Makefile b/src/Makefile
index 7166708..450a8eb 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -38,8 +38,9 @@ check: test
make -C test
.PHONY: install
-install: pct lxc-pve.conf lxc-pve-prestart-hook lxc-pve-autodev-hook lxc-pve-poststop-hook \
- lxcnetaddbr pct.1 pct.conf.5 pct.bash-completion pct.zsh-completion pve-userns.seccomp
+install: pct lxc-pve.conf pct.1 pct.conf.5 pct.bash-completion pct.zsh-completion \
+ pve-userns.seccomp pve-container@.service pve-container-debug@.service \
+ lxc-pve-prestart-hook lxc-pve-autodev-hook lxc-pve-poststop-hook lxcnetaddbr
PVE_GENERATING_DOCS=1 perl -I. -T -e "use PVE::CLI::pct; PVE::CLI::pct->verify_api();"
install -d ${SBINDIR}
install -m 0755 pct ${SBINDIR}
@@ -48,6 +49,7 @@ install: pct lxc-pve.conf lxc-pve-prestart-hook lxc-pve-autodev-hook lxc-pve-pos
install -m 0755 pve-container-stop-wrapper ${LXC_SCRIPT_DIR}
install -d -m0755 ${SERVICEDIR}
install -m0644 pve-container@.service ${SERVICEDIR}/
+ install -m0644 pve-container-debug@.service ${SERVICEDIR}/
install -m0644 'system-pve\x2dcontainer.slice' ${SERVICEDIR}/
install -d ${LXC_HOOK_DIR}
install -m 0755 lxc-pve-prestart-hook ${LXC_HOOK_DIR}
diff --git a/src/PVE/API2/LXC/Status.pm b/src/PVE/API2/LXC/Status.pm
index 89186ae..766c2ce 100644
--- a/src/PVE/API2/LXC/Status.pm
+++ b/src/PVE/API2/LXC/Status.pm
@@ -130,6 +130,12 @@ __PACKAGE__->register_method({
node => get_standard_option('pve-node'),
vmid => get_standard_option('pve-vmid', { completion => \&PVE::LXC::complete_ctid_stopped }),
skiplock => get_standard_option('skiplock'),
+ debug => {
+ optional => 1,
+ type => 'boolean',
+ description => "If set, enables very verbose debug log-level on start.",
+ default => 0,
+ },
},
},
returns => {
@@ -188,7 +194,7 @@ __PACKAGE__->register_method({
});
}
- PVE::LXC::vm_start($vmid, $conf, $skiplock);
+ PVE::LXC::vm_start($vmid, $conf, $skiplock, $param->{debug});
};
my $lockcmd = sub {
diff --git a/src/PVE/LXC.pm b/src/PVE/LXC.pm
index f9aaaa9..b3e3581 100644
--- a/src/PVE/LXC.pm
+++ b/src/PVE/LXC.pm
@@ -2218,7 +2218,7 @@ my sub monitor_start($$) {
}
sub vm_start {
- my ($vmid, $conf, $skiplock) = @_;
+ my ($vmid, $conf, $skiplock, $debug) = @_;
# apply pending changes while starting
if (scalar(keys %{$conf->{pending}})) {
@@ -2247,15 +2247,19 @@ sub vm_start {
unlink "/run/pve/ct-$vmid.stderr"; # systemd does not truncate log files
- my $base_unit = $conf->{debug} ? 'pve-container-debug' : 'pve-container';
+ my $is_debug = $debug || (!defined($debug) && $conf->{debug});
+ my $base_unit = $is_debug ? 'pve-container-debug' : 'pve-container';
- my $cmd = ['systemctl', 'start', "pve-container\@$vmid"];
+ my $cmd = ['systemctl', 'start', "$base_unit\@$vmid"];
PVE::GuestHelpers::exec_hookscript($conf, $vmid, 'pre-start', 1);
eval {
PVE::Tools::run_command($cmd);
monitor_start($monitor_socket, $vmid) if defined($monitor_socket);
+
+ # if debug is requested, print the log it also when the start succeeded
+ print_ct_stderr_log($vmid) if $is_debug;
};
if (my $err = $@) {
unlink $skiplock_flag_fn;
diff --git a/src/PVE/LXC/Config.pm b/src/PVE/LXC/Config.pm
index 044e2e1..4cd669c 100644
--- a/src/PVE/LXC/Config.pm
+++ b/src/PVE/LXC/Config.pm
@@ -508,6 +508,12 @@ my $confdesc = {
description => 'Tags of the Container. This is only meta information.',
optional => 1,
},
+ debug => {
+ optional => 1,
+ type => 'boolean',
+ description => "Try to be more verbose. For now this only enables debug log-level on start.",
+ default => 0,
+ },
};
my $valid_lxc_conf_keys = {
diff --git a/src/pve-container-debug@.service b/src/pve-container-debug@.service
new file mode 100644
index 0000000..7cfebaa
--- /dev/null
+++ b/src/pve-container-debug@.service
@@ -0,0 +1,22 @@
+# based on lxc@.service, but without an install section because
+# starting and stopping should be initiated by PVE code, not
+# systemd.
+[Unit]
+Description=PVE LXC Container: %i
+DefaultDependencies=No
+After=lxc.service
+Wants=lxc.service
+Documentation=man:lxc-start man:lxc man:pct
+
+[Service]
+Type=simple
+Delegate=yes
+KillMode=mixed
+TimeoutStopSec=120s
+ExecStart=/usr/bin/lxc-start -F -n %i -o /dev/stderr -l DEBUG
+ExecStop=/usr/share/lxc/pve-container-stop-wrapper %i
+# Environment=BOOTUP=serial
+# Environment=CONSOLETYPE=serial
+# Prevent container init from putting all its output into the journal
+StandardOutput=null
+StandardError=file:/run/pve/ct-%i.stderr
--
2.20.1
next prev parent reply other threads:[~2020-09-09 19:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-09 19:12 [pve-devel] applied: [PATCH container 1/5] ct start: track lxc-start stderr and print in error case Thomas Lamprecht
2020-09-09 19:12 ` Thomas Lamprecht [this message]
2020-09-09 19:12 ` [pve-devel] applied: [PATCH container 3/5] protected_call: remove left-over rootdir/dev mkdir Thomas Lamprecht
2020-09-09 19:12 ` [pve-devel] applied: [PATCH container 4/5] alpine: setup net: pass whole config to parent method Thomas Lamprecht
2020-09-09 19:12 ` [pve-devel] applied: [PATCH container 5/5] setup: heuristically warn if the FS hosting /etc is not mounted Thomas Lamprecht
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