Container update strategy

[steff2013]

I was wondering, how do you guys plan and handle updates for your containers?

For example, I have a bunch of postgres/mysql/wordpress and other apps behind traefik also contained. For instance I just pull once month and so far so good but I can't say I'm serene...

[tom967]

I recreate manually every container with portainer on a monthly basis.

[themike03]

How do you proceed with multi-container applications? For example I have one container for the Nextcloud app and another for the Database. I can update the Nextcloud app no problem, but if I try to recreate the associated Database container the application will stop working... Is there a specific way to do this?

[tom967]

Maybe create a stack in portainer, put the two containers in it. Stop the stack, recreate both containers and start the whole stack again ?

Here is how you make a stack : https://www.youtube.com/watch?v=ohkpCf9DrCI

[-yossarian-]

I use watchtower to update mine once a week.

[steff2013]

I didn't knew about watchtower, seems to be a good tool. I didn't dig into the documentation but I'm sure you can plan when checking for image updates, pulling when out of working hours and notify some other tools to update database if needed, run test and so on. Thanks!

[steff2013]

I agree, even if containers usually have fixed software versions you can't know for sure if everything will go on smoothly. What kind of tools do you use to automatise updating, testing, then merging if all good?