Snapshotting in docker is as easy as docker commit. After that you can back it up with docker save. Then move to another host, but not without downtime.
However normally you need to backup/move only volumes attached to containers. If that’s not the way how you like to organize your services, you likely don’t need docker.
What’s the purpose of running container in a container? Why not install docker on your host machine?
I meant software RAID of course. Hardware RAIDs just cause headacehes, but fake RAIDs that are built into motherboards are a real nightmare.
Building RAID on top of SSDs is an answer.
With fail2ban single bot behind a NAT can make the site unaccessible for all users behind that NAT.
sh is for shell.
Security fixes are backported to ESR releases so they are not less secure than bleeding edge.
Well, I don’t use proxmox, however docker coexists with libvirt and other virtualization systems. If there are overlapping networks that docker ant proxmox attempt to manage, they are configurable.