ProxMox: Membuat Cluster

Proxmox VE Cluster memungkinkan untuk melakukan manajemen terpusat dari banyak server fisik. Sebuah Proxmox VE Cluster terdiri dari minimal satu master dan beberapa node (minimal satu master dan satu node).

Fitur Utama

Fitur utama ProxMox VE Cluster adalah

• Manajemen terpusat melalui web.
• satu login dan password untuk mengakses semua node dan guest
• Console dapat melihat semua Virtual Machines
• Melakukan migrasi dari virtual machine antara berbagai mesin yang secara fisik berbeda.
• Synchronized Virtual Appliance template store

Create a Proxmox VE Cluster

First, install two Proxmox VE servers, see Installation. Make sure that each Proxmox VE server has a unique host name, by default all server has the same host name.

Currently the cluster creation has to be done on the console, you can login to the Proxmox VE server via ssh.

All settings can be done via "pveca", the PVE Cluster Administration Toolkit

USAGE: pveca -l             # show cluster status
       pveca -c             # create new cluster with localhost as master
       pveca -s [-h IP]     # sync cluster configuration from master (or IP)
       pveca -d ID          # delete a node
       pveca -a [-h IP]     # add new node to cluster
       pveca -m             # force local node to become master

Define the master

Login via ssh to the first Proxmox VE server.

Create the master:

pveca -c

To check the state of cluster:

pveca -l

Add a node to an existing master

Login via ssh to a second Proxmox VE server. Please note, the node should not have any VM´s. (If yes you will get conflicts with identical VMID´s - to workaround, use vzdump to backup and to restore to a different VMID after the cluster configuration).

Join a node to the master:

pveca -a -h IP-ADDRESS-MASTER

To check the state of cluster:

pveca -l

Display the state of cluster:

pveca -l
CID----IPADDRESS----ROLE-STATE--------UPTIME---LOAD----MEM---ROOT---DATA
 1 : 192.168.7.104   M     A    5 days 01:43   0.54    20%     1%     4%
 2 : 192.168.7.103   N     A    2 days 05:02   0.04    26%     5%    29%
 3 : 192.168.7.105   N     A           00:13   1.41    22%     3%    15%
 4 : 192.168.7.106   N     A           00:05   0.54    17%     3%     3%

Working with Proxmox VE Cluster

Now, you can start creating Virtual Machines on Cluster nodes by using the Central Web-based Management on the master.

Troubleshooting

You can manually check the cluster configuration files on each node. Before you edit these files, stop the cluster sync and tunnel service via web interface.

nano /etc/pve/cluster.cfg

Also check if the following file are still up to date, if not because your keys got updated just remove/adapt it.

/root/.ssh/known_hosts

Delete and recreate a cluster configuration

Sometimes it's quicker to delete and recreate your cluster configuration than it is to try and figure out what went wrong. The process includes stoping the cluster sync and tunnel service, deleting the existing cluster config and creating/joining the new cluster. The steps can be found below:

• Note: If your ssh host keys have changed you may need to delete them on each host before you begin:

rm /root/.ssh/known_hosts

• Jot down the IP of the new master node.
• Run on new master node:

/etc/init.d/pvemirror stop
/etc/init.d/pvetunnel stop
rm /etc/pve/cluster.cfg
pveca -c

• Verify that the cluster has been created:

pveca -l

• Run on nodes you wish to add to the new cluster.
  • Note: Change IP-ADDRESS-MASTER to the IP of the new master node.

/etc/init.d/pvemirror stop
/etc/init.d/pvetunnel stop
rm /etc/pve/cluster.cfg
pveca -a -h IP-ADDRESS-MASTER

• Verify that the node has been added to the new cluster:

pveca -l

Video Tutorials

• Cluster configuration (Video)

Tutorials

• Griffon's IT Library - ProxMox Cluster Walkthrough

Referensi

• http://pve.proxmox.com/wiki/Proxmox_VE_Cluster