this post was submitted on 15 Aug 2023
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42
Sonarr (dev) now supports postgres (lm.boing.icu)
submitted 1 year ago by [email protected] to c/selfhosted
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Thought I would let you all know in case you have missed it. A few days ago Postgres support was finally merged into Sonarr dev branch (meaning 4.x version). I have already transitioned to it, so far it runs without issue

You can mostly follow the same instructions as for Radarr from here: https://wiki.servarr.com/radarr/postgres-setup

I used the following temporary docker container to do the conversion (obviously replace stuff you need to):

docker run --rm -v Route\to\sonarr.db:/sonarr.db --network=host dimitri/pgloader pgloader --debug --verbose --with "quote identifiers" --with "data only" "sqlite://sonarr.db" "postgresql://user:pwd@DB-IP/sonarr-main"

When it completed the run, it outputs a kind of table that shows if there were any errors. In my case there were 2 tables (cant remember which ones anymore) that couldn't be inserted, so I edited those manually afterwards, so it matches the ones in the original DB.

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[–] [email protected] 14 points 1 year ago (2 children)

What are the advantages of using postgres? It makes radarr/sonarr faster?

[–] Khaelas 10 points 1 year ago

I have this same question. I'm running Emby, Sonarr, Radarr and Sabnzbd on a 16GB RAM 4 year old laptop and it seems just fine performance wise. What could I be missing out on?

[–] 6xpipe_ 7 points 1 year ago (2 children)

I was curious too, so I looked into their Github issues. Apparently, SQLite doesn't play well with k8s due to the distributed/networked nature of the environment. According to comments in the pull request, that seems to be the main driver. And apparently, Radarr already has a Postgres option.

Though, there are requests going back to 2017 to support it...just because, I guess? That person seems to just want all their data in one DB for some reason.

[–] [email protected] 12 points 1 year ago

SQLite doesn't like NFS, the file locking isn't stable/fast enough so any latency in the storage can cause data loss, corruption or just slow things down.

However SQLite to MySQL is relatively peanuts, Postgres less so...

Still it's a nice move for those that don't run containers on a single host with local filesystems.

[–] [email protected] 9 points 1 year ago (1 children)

Basically this. I have my home stuff running in a K3S cluster, and I had to restore my Sonarr volume several times because the SQLite DB has corrupted. Transitioning to Postgres should solve this issue, and I already have quite a few other stuff in it, for example Radarr and Prowlarr

[–] [email protected] 2 points 1 year ago (1 children)

Longhorn storage, ceph block, or other distribed BLOCK storage can help assist this issue.

[–] [email protected] 1 points 1 year ago (1 children)

Yeah I'm using Longhorn. Might be that I have set it up wrong, but didn't seem to have helped with the DB corruption issue.

[–] [email protected] 1 points 1 year ago (1 children)

If you are using longhorn in RWO mode, you shouldn't have any issues as it passes block storage directly to the pod, via iscsi. No file/nfs storage involved.

[–] [email protected] 1 points 1 year ago (1 children)

Here is what I'm using atm. Is there a better way to do this? I'm still learning K8S :)

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: sonarr-pvc
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: longhorn
  resources:
    requests:
      storage: 250Mi
***
[....]
volumes:
      - name: config
        persistentVolumeClaim:
          claimName: sonarr-pvc
[–] [email protected] 1 points 1 year ago

Looks correct to me.