best way to cluster and migrate containers

[si458]

Hi All.

I'm hoping for everyone's views and everyone's opinions on this

I currently have 5 proxmox servers all running separately (not in cluster) and I want to start managing them all from 1 panel and do migrations, backups, etc...

currently I have an old NAS box which I use for NFS storage which contains ISO's, Backups, Templates, etc...

they machines all currently backup fine every night via NFS to the NAS box... (takes few hours but works fine)

I want to be able to manage the servers via the Single panel, do migrations with almost zero downtime (dont mind a min or 2 downtime because the upgrades, etc, would all be done over night, e.g. 2am)

the only thing i can think is at the moment all the servers have containers and VMs running on them!

however clever me made sure the IDs of each container/VM was never used on another machine so there all unique!

what would be the best way of me doing this ???

(NOTE i have 1 spare server doing nothing so i can put it into standalone mode to move the containers all off the servers if i need to start them afresh)

Regards

Simon

 

[thesubmitter]

You will need to create a cluster by freeing up one server (move all containers to an existing cluster member)at a time and adding it to the cluster.

Live migration works fine between cluster members with minimal downtime but no HA.

 

[si458]

You will need to create a cluster by freeing up one server (move all containers to an existing cluster member)at a time and adding it to the cluster.

Live migration works fine between cluster members with minimal downtime but no HA.

Hi, Thanks for you suggestion, I will give this a go

BUT how do i migrate VM machines?

I can migrate openvz containers fine, but Im not too sure how to migrate my KVM machines over?

Simon

 

[thesubmitter]

Hi, Thanks for you suggestion, I will give this a go

BUT how do i migrate VM machines?

I can migrate openvz containers fine, but Im not too sure how to migrate my KVM machines over?

Simon

Probably using backup & restore... I havent checked though. I actually just copy over the .conf file and the disk image (while the machine is shut down)

 

[si458]

Hi all,
Update progress:
I moved all my container off there machines one by one onto the spare server
Joined the servers into cluster
And it completely fell apart!
Was very unhappy
Thankfully I took backups via nfs and did these migrates out of office hours 2am
Every time I restarted a machine for say updates, the others just lost sync and couldn't talk to the others!
Also the web panel was so so slow!!!
I am using a mikrotik gigabit switch between the servers and i enabled the multicast that was required but still wasn't having it
So sadly I had to revert back to single servers until I can find out what the problem was!
Regards
Simon