Move all vm's to another cluster

[repa]

hi,

we have a proxmox cluster with local storage only.

for maintenance, we have to move all vm's from one host to another.

with "qm migrate <id> <host> --online --with-local-disks" we can migrate vm by vm.

How can we migrate all VMs from hostA to hostB with one command?

 

[tom]

One way is backup/restore (but this is not just "one" command).

 

[repa]

hi,

we wan't to move the VM's from one host to another inside the cluster, so i dont think backup / restore is needed when we can use the "qm migrate" command?

 

[tom]

you can use qm migrate. "with local disk" is pretty new and sometimes not 100 % stable (at least in my tests).

 

[repa]

Yes, i know this command, but how can i move ALL vm's from one host to another?

instead of moving every single vm with "qm migrate <id>" is it possible to "qm migrate <sourcehost> <dest host>"?

 

[avn]

qm list | awk '{print $1}' | while read VMID; do qm migrate $VMID <DST_HOST> -online --with-local-disks; done

Instead of <DST_HOST> insert your destination host (without brackets).

 

[repa]

thanks, but that command will move ALL vm's right?

we have a 4 node cluster and we need to migrate from nodeA to nodeB for example.

not all VM's from all hosts to one node.

 

[avn]

It will move all vm's only from local host where you run the command.

 

[repa]

ah cool, thanks alot!

 

[Matyi.Szabolcs]

Hi All,

In the command above, we can see that it is faulty and needs to be fixed. (with echo test only)

root@proxmox01:~]$ qm list | awk '{print $1}' | while read VMID; do echo qm migrate $VMID proxmox02 -online --with-local-disks; done
qm migrate VMID proxmox02 -online --with-local-disks
qm migrate 102 proxmox02 -online --with-local-disks
qm migrate 107 proxmox02 -online --with-local-disks

This is the right:

qm list | egrep -v VMID | awk '{print $1}' | while read VMID; do qm migrate $VMID proxmox02 -online --with-local-disks; done

[root@proxmox01:~]$ qm list | egrep -v VMID | awk '{print $1}' | while read VMID; do echo qm migrate $VMID proxmox02 -online --with-local-disks; done
qm migrate 102 proxmox02 -online --with-local-disks
qm migrate 107 proxmox02 -online --with-local-disks

Regards

 

[DataCollector]

Hi All,

In the command above, we can see that it is faulty and needs to be fixed. (with echo test only)


This is the right:



Regards

Thank you @Matyi.Szabolcs
The right command worked flawless here.