migrate one node to another cluster

[taqchi]

hi

how can i move one node from cluster A to cluster B ?

regards

 

[tom]

this is not a supported migration task. remove the node as described in the wiki, then re-install from ISO before you join again.

 

[taqchi]

this is not a supported migration task. remove the node as described in the wiki, then re-install from ISO before you join again.

hi

Remove the node from the cluster is not the problem ... but reinstall more than 20 servers at least after make a backup of more thant 100 vm on production is a little bit more complex and tedious.

is there a way to reset the configuration of the cluster and leave it in a post-installation state but of course without installing the server? maybe deleting some configuration files, setting a flag on a hidden file or something ?


regards

 

[tom]

If you know what you are doing, yes. but you need to make sure that you do not mix ssh keys, known-hosts. and you need a deep understanding of pmxcfs.

So unless you are a real Proxmox VE cluster expert you should re-think about your plan.

Start reading here: http://pve.proxmox.com/wiki/Proxmox_VE_2.0_Cluster#Remove_a_cluster_node

 

[taqchi]

Hi Tom

Are you a real proxmox ve cluster expert ?

the link for start reading is only the easy part of what i need. what about the part of pmxcfs, ssh keys etc etc etc ?

regards

 

[tom]

Hi Tom

Are you a real proxmox ve cluster expert ?

yes.

the link for start reading is only the easy part of what i need. what about the part of pmxcfs, ssh keys etc etc etc ?

regards

For pmxcfs, see:
http://pve.proxmox.com/wiki/Proxmox_Cluster_file_system_(pmxcfs)
and the source code in our git.

ssh is a well known technologies on Debian, nothing really special.

Your problem is that you cannot join a host with VM/CT´s to a cluster. See http://pve.proxmox.com/wiki/Proxmox_VE_2.0_Cluster#Adding_nodes_to_the_Cluster

 

[taqchi]

>>>>> Your problem is that you cannot join a host with VM/CT´s to a cluster. See http://pve.proxmox.com/wiki/Proxmox_VE_2.0_Cluster#Adding_nodes_to_the_Cluster

its easy when you know what is important

everything was resolved ... i stop all the vm on the server . made a copy of all the important files on a separate directory and replace the cluster configuration with fresh files.

after that i add the machine to the new cluster ...

i dont know why i had to restart all the machines in the new cluster to get a fully functional cluster ...

thanks again.