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Best approach for Docker resilience with two hosts (lemmy.nz)

submitted 1 year ago by [email protected] to c/[email protected]

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I'm running Docker on Ubuntu server; around 50 containers running, most admin via Portainer. Configuration files and small databases for container applications are stored on the local SSD, media and larger files are stored on a NAS.

NAS data and the container folders are backed up.

I have a second identical machine doing nothing. What would you recommend researching to add resilience to this setup? Top priority is quick and easy restoration should the SSD fail - everything else is relatively easy to replace.

I'll create an SSD RAID but I like the idea of a second host.

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[–] [email protected] 2 points 1 year ago

I have the OS (with docker) mirrored too. So no reinstalling, just disk or other parts swapping in case of a failure. I hope. A mothboard swap is the worst downtime. I have done this and needed to fiddle with network settings due to changed net interface name to get the server up again.