HA in a swarm of Pi: how to solve the shared FS

1

Hello,
i’m testing in these days swarm cluster on my Pis. I like the idea to have at least another Pi ready to run my HA installation in case of any problem on my first Pi.
The main problem I am facing is the share filesystem. I don’t have any external hardware to use ad FS in common between my cluster nodes so I was trying to figuring gout how I could solve the problem.
At the moment I just thought to use rsync to keep the local FS synchronised but I don’t like very much this idea because it would rely on crontab tasks.
Do you know is there is anything that could help me?

Thank You

2

GlusterFS is easy to setup. Actually i don‘t think that HA can run multiple instances in a swarm as at least automations would collide.

3

I’m just moving first steps in swarm so I really don’t know if it is possible but I would be happy to run just a single instance with a VIP IP like a “classic” cluster framework.

4

The question is do you really need a shared storage? I run home assistant in kubernetes and download the config from git using an init container. This is a quite reliable solution…