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authorDaniel J Walsh <dwalsh@redhat.com>2022-03-23 14:12:07 -0400
committerDaniel J Walsh <dwalsh@redhat.com>2022-03-23 15:05:30 -0400
commit5e28cbc5fcdd89fc3623fe2324d7ba7fa6117d21 (patch)
tree9b88539a5407c6f9f1d3268412b91a0aac0ac83e /docs/source/markdown
parentf049cba47c31d31a4a8ed9a9180f0e847be3411c (diff)
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When running systemd in a container set container_uuid
systemd expects the container_uuid environment variable be set when it is running in a container. Fixes: https://github.com/containers/podman/issues/13187 Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Diffstat (limited to 'docs/source/markdown')
-rw-r--r--docs/source/markdown/podman-create.1.md23
-rw-r--r--docs/source/markdown/podman-run.1.md29
2 files changed, 29 insertions, 23 deletions
diff --git a/docs/source/markdown/podman-create.1.md b/docs/source/markdown/podman-create.1.md
index 506f575fe..1f0d485ca 100644
--- a/docs/source/markdown/podman-create.1.md
+++ b/docs/source/markdown/podman-create.1.md
@@ -1020,15 +1020,20 @@ Run container in systemd mode. The default is *true*.
The value *always* enforces the systemd mode is enforced without
looking at the executable name. Otherwise, if set to true and the
-command you are running inside the container is systemd, /usr/sbin/init,
-/sbin/init or /usr/local/sbin/init.
-
-If the command you are running inside of the container is systemd,
-Podman will setup tmpfs mount points in the following directories:
-
-/run, /run/lock, /tmp, /sys/fs/cgroup/systemd, /var/lib/journal
-
-It will also set the default stop signal to SIGRTMIN+3.
+command you are running inside the container is **systemd**, **/usr/sbin/init**,
+**/sbin/init** or **/usr/local/sbin/init**.
+
+Running the container in systemd mode causes the following changes:
+
+* Podman mounts tmpfs file systems on the following directories
+ * _/run_
+ * _/run/lock_
+ * _/tmp_
+ * _/sys/fs/cgroup/systemd_
+ * _/var/lib/journal_
+* Podman sets the default stop signal to **SIGRTMIN+3**.
+* Podman sets **container_uuid** environment variable in the container to the
+first 32 characters of the container id.
This allows systemd to run in a confined container without any modifications.
diff --git a/docs/source/markdown/podman-run.1.md b/docs/source/markdown/podman-run.1.md
index 7fa7bda30..03e46bf85 100644
--- a/docs/source/markdown/podman-run.1.md
+++ b/docs/source/markdown/podman-run.1.md
@@ -1082,20 +1082,21 @@ Note: if you use the **--network=host** option, these sysctls will not be allowe
Run container in systemd mode. The default is **true**.
The value *always* enforces the systemd mode is enforced without
-looking at the executable name. Otherwise, if set to **true** and the
-command you are running inside the container is systemd, _/usr/sbin/init_,
-_/sbin/init_ or _/usr/local/sbin/init_.
-
-If the command you are running inside of the container is systemd
-Podman will setup tmpfs mount points in the following directories:
-
-- _/run_
-- _/run/lock_
-- _/tmp_
-- _/sys/fs/cgroup/systemd_
-- _/var/lib/journal_
-
-It will also set the default stop signal to **SIGRTMIN+3**.
+looking at the executable name. Otherwise, if set to true and the
+command you are running inside the container is **systemd**, **/usr/sbin/init**,
+**/sbin/init** or **/usr/local/sbin/init**.
+
+Running the container in systemd mode causes the following changes:
+
+* Podman mounts tmpfs file systems on the following directories
+ * _/run_
+ * _/run/lock_
+ * _/tmp_
+ * _/sys/fs/cgroup/systemd_
+ * _/var/lib/journal_
+* Podman sets the default stop signal to **SIGRTMIN+3**.
+* Podman sets **container_uuid** environment variable in the container to the
+first 32 characters of the container id.
This allows systemd to run in a confined container without any modifications.