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Diffstat (limited to 'docs')
| -rw-r--r-- | docs/source/markdown/podman-auto-update.1.md | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/docs/source/markdown/podman-auto-update.1.md b/docs/source/markdown/podman-auto-update.1.md index 106b9b00a..a1d2f291b 100644 --- a/docs/source/markdown/podman-auto-update.1.md +++ b/docs/source/markdown/podman-auto-update.1.md @@ -51,6 +51,15 @@ The `UPDATED` field indicates the availability of a new image with "pending". Change the default output format. This can be of a supported type like 'json' or a Go template. Valid placeholders for the Go template are listed below: +#### **--rollback**=*true|false* + +If restarting a systemd unit after updating the image has failed, rollback to using the previous image and restart the unit another time. Default is true. + +Please note that detecting if a systemd unit has failed is best done by the container sending the READY message via SDNOTIFY. This way, restarting the unit will wait until having received the message or a timeout kicked in. Without that, restarting the systemd unit may succeed even if the container has failed shortly after. + +For a container to send the READY message via SDNOTIFY it must be created with the `--sdnotify=container` option (see podman-run(1)). The application running inside the container can then execute `systemd-notify --ready` when ready or use the sdnotify bindings of the specific programming language (e.g., sd_notify(3)). + + | **Placeholder** | **Description** | | --------------- | -------------------------------------- | | .Unit | Name of the systemd unit | @@ -132,4 +141,4 @@ $ podman auto-update ``` ## SEE ALSO -**[podman(1)](podman.1.md)**, **[podman-generate-systemd(1)](podman-generate-systemd.1.md)**, **[podman-run(1)](podman-run.1.md)**, systemd.unit(5) +**[podman(1)](podman.1.md)**, **[podman-generate-systemd(1)](podman-generate-systemd.1.md)**, **[podman-run(1)](podman-run.1.md)**, sd_notify(3), systemd.unit(5) |