Postgresql having trouble with Version 18

[cbxd]

I reran the restart.sh script and postgres wouldn't cooperate.

I got the error: Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "mstack/appdata/postgresql" to rootfs at "/var/lib/postgresql/data": change mount propagation through procfd: open o_path procfd: open /var/lib/docker/overlay/<hash>/merged/var/lib/postgresql/data: no such file or directory: unknown

I read the docker page for postgres (at https://hub.docker.com/_/postgres#pgdata) and tried updating the volume from: - ${FOLDER_FOR_DATA:?err}/postgresql:/var/lib/postgresql/data to - ${FOLDER_FOR_DATA:?err}/postgresql:/var/lib/postgresql/18/data

But that didn't work and left me with dependency failed to start: container postgresql is unhealthy

Temporary workaround: Updating the postgresql docker image to: image: docker.io/library/postgres:17 lets it run, but naturally being stuck at an older version isn't ideal.

[sjpilot]

The error above can be fixed by mapping the folder into the new directory for postgresql 18, but further steps are required (including running a backup first) for the upgrade per https://henrywithu.com/upgrade-postgresql-from-17-to-18-on-docker/ postgresql | 2025-09-27 12:46:59.801 AEST [1] DETAIL: The data directory was initialized by PostgreSQL version 17, which is not compatible with this version 18.0 (Debian 18.0-1.pgdg13+3). I think we should pin to v17, current minor release is supported until November 8, 2029. 18.0 might not even be production ready, so again, lets run v17 instead of latest.

[losergamer04]

Thank you for this. I'm trying to get this up and running my self and had the same issue. Workaround confirmed to work.

[victorguidi]

Hi there, I can confirm the issue is also happening for deployments using runc in k3s. trying to mount a persistent volume to it will crash with:

failed to create shim task: OCI runtime create failed: runc create failed: unable to st │
│ art container process: error during container init: error mounting "....." to rootfs at "/var/lib/postgresql/data"

[sennaarer]

use /var/lib/postgresql/18/docker

[losergamer04]

I was able to successfully get version 17 to work with the following changes image: **docker.io/library/postgres:latest --> image: docker.io/library/postgres:17

I then added a PGData value under environment environment: - TZ=${TIMEZONE:?err} - PGData=${FOLDER_FOR_DATA:?err}/postgresql/data - POSTGRES_DB=${AUTHENTIK_DATABASE:?err} - POSTGRES_USER=${POSTGRESQL_USERNAME:?err} - POSTGRES_PASSWORD=${POSTGRESQL_PASSWORD:?err}