Podman

OpenAdmin > Services > Podman gives Administrators visibility into the host's Podman installation and lets them manage the shared image store. It's only available to Administrators and Users — not Resellers. It has five tabs: Info, Images, Volumes, Networks, and Disk Usage.

Info

Raw output of podman info, exactly as it would appear on the terminal.

Images

Lists every image in the shared image store — the same store every hosting user's rootless Podman instance reads from, so an image only needs to be pulled once to be available to all users. The table shows:

Repository / Tag / Image ID / Size / Created
Containers — how many containers currently use the image, split into N system (root's own containers, e.g. the mail server) and N user (summed across every hosting user's own containers). An image with neither shows Unused.
Update — Check compares the local image's digest against the registry's current one (no download, just a manifest fetch). If a newer digest is available it shows Update available with an Update button to re-pull; otherwise Up to date with a Recheck option. Pulling an update does not affect already-running containers — they keep using the content they started with until stopped/recreated.
Delete — only offered for images with 0 system and 0 user containers using them.

The table also cross-references the compose stack used to provision new users (/etc/openpanel/docker/compose/1.0/docker-compose.yml). Any image that stack references but that isn't in the shared store yet shows as Not downloaded, with a one-click Pull.

Three bulk actions sit above the table:

Check all for updates — runs the digest check against every downloaded image.
Download all — pulls every image the stack references that's currently missing.
Delete unused — removes every currently-downloaded image with 0 system and 0 user containers.

All of these (per-image and bulk) run in the background with a progress toast, since a pull can take a while for a large image.

Volumes / Networks

Read-only listings of podman volume ls / podman network ls for the local context.

Disk Usage

podman system df output — Images reflects the whole shared store (every hosting user's images), while Containers and Volumes are root's own local Podman only, not aggregated across hosting users.