Cannot update Portainer

I have tried to update Portainer via the OMV GUI (Portainer --> Install)

I get an error and now Portainer is not available anymore.

Everything worked fine before i tried this

Docker storage :: /var/lib/docker
Agent port:: 8000
Web port:: 9000
Yacht port:: 8001
arch   :: amd64
option :: portainer
state  :: install
extras :: 5.6.2
DNS OK.
Removing portainer ...
portainer
Removing portainer/portainer-ce image ...
Untagged: portainer/portainer-ce:latest
Untagged: portainer/portainer-ce@sha256:79edf1302c9b4fdb06bc23321cc551e9118c29e6d668e12e23d4e58d993ab830
Deleted: sha256:8bd64518b97697ed2d0d00b5dfd46260f729cdb5ae8120b38e404a05ad08f61b
Deleted: sha256:552b482deea1a69a4e787000b4a92348d8d46b820cfa7795cd1039db1f9183d3
Deleted: sha256:0f434987961209eca0504583fba181d92a59aa39c5b76f6e82a00a932cda1c38
Deleted: sha256:2365c13d7baf5be2ddb9f13ac4884996d67d7aa93b2b1ae6cccfd80b8a509415
Pulling and starting portainer/portainer-ce ...
c8a066207c4139540758b113934371c1151853f2cf8d763abafc300dc3ba38fa
Something went wrong trying to pull and start portainer ...
Done.

Quote from Agricola

Try to remove it first and then install. If that doesn’t work remove Docker and then install it and Portainer.

I removed Portainer by OMV menu. That did not help. Result is the same.

If i remove docker, will that not destroy my existing containers and config?

Quote from BebeMischa

I always use this for update of Portainer. Never had issues...

https://documentation.portainer.io/v2.0/upgrade/upddocker/

I tried this. Did not help:

# docker run -d -p 8000:8000 -p 9000:9000 --name=portainer --restart=always --pull=always -v /var/run/docker.sock:/var/run/docker.sock -v portainer_data:/data portainer/portainer-ce
latest: Pulling from portainer/portainer-ce
Digest: sha256:3e499846ae1830e9465de7f110cbf19f4dff076e80abc0f7a1d4b50e67c6b873
Status: Image is up to date for portainer/portainer-ce:latest
e30ffec6561eb24200c371fbf966e8f33e0d2851c9eb227b59909439bda39cb9
docker: Error response from daemon: driver failed programming external connectivity on endpoint portainer (3674732e0dc620075ecca03dcd3bf15c637b32e39a1089ad8a07525fb8a77d78): Error starting userland proxy: listen tcp4 0.0.0.0:8000: bind: address already in use.

 netstat -pantu | grep 8000
tcp        0      0 0.0.0.0:8000            0.0.0.0:*               LISTEN      31979/node

Ok i guess i found the cause. It seems that newer Portainer versions need a second port open on 8000.

I have another application taking that port.

I am now running portainer API on 8001 and it fired up.

Works!

Seems like i have lost some of the config on the way.

The docker-compose script for the only stack i have is gone.

How could i recover that?

5.6.12-1

Ok solved.

Somehow i had non default location for the data volume on the host in my old Portainer installation. I reinstalled from commandline giving it the path to the old volume and now all config is there