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Add key to control if a container can get started by its pod

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By default today, the container is always started if its pod is also
started. This prevents to create custom with systemd where containers in
a pod could be started through their `[Install]` section.

We add a key `StartWithPod=`, enabled by default, that enables one to
disable that behavior.

This prevents the pod service from changing the state of the container
service.

Fixes #24401

Signed-off-by: Farya L. Maerten <me@ltow.me>
This commit is contained in:
Farya L. Maerten
2024-10-31 22:17:40 +01:00
committed by Lamb
parent de990415a2
commit 2597eeae70
7 changed files with 52 additions and 7 deletions
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11
docs/source/markdown/podman-systemd.unit.5.md
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@ -333,6 +333,7 @@ Valid options for `[Container]` are listed below:
| SecurityLabelNested=true | --security-opt label=nested |
| SecurityLabelType=spc_t | --security-opt label=type:spc_t |
| ShmSize=100m | --shm-size=100m |
| StartWithPod=true | If Pod= is defined, container is started by pod |
| StopSignal=SIGINT | --stop-signal=SIGINT |
| StopTimeout=20 | --stop-timeout=20 |
| SubGIDMap=gtest | --subgidname=gtest |
@ -813,6 +814,16 @@ Size of /dev/shm.
This is equivalent to the Podman `--shm-size` option and generally has the form `number[unit]`
### `StartWithPod=`
Start the container after the associated pod is created. Default to **true**.
If `true`, container will be started/stopped/restarted alongside the pod.
If `false`, the container will not be started when the pod starts. The container will be stopped with the pod. Restarting the pod will also restart the container as long as the container was also running before.
Note, the container can still be started manually or through a target by configuring the `[Install]` section. The pod will be started as needed in any case.
### `StopSignal=`
Signal to stop a container. Default is **SIGTERM**.