Thứ Hai, 5 tháng 12, 2016

How to Configure a Proxmox VE 4 Multiple Node Cluster

Prerequisites
  • 3 Proxmox server
    pve1
        IP          : 192.168.1.114
        FQDN     : pve1.myproxmox.co
        SSH port: 22

    pve2
        IP          : 192.168.1.115
        FQDN     : pve2.myproxmox.co
        SSH port: 22

    pve3
        IP           : 192.168.1.116
        FQDN      : pve3.myproxmox.co
        SSH port : 22
  • 1 CentOS 7 server as NFS storage with IP 192.168.1.101
  • Date and time mus be synchronized on each Proxmox server.

Step 1 - Configure NFS Storage

In this step, we will add the NFS storage noge for Proxmox and allow multiple Proxmox nodes to read and write on the shared storage.
Log in to the NFS server with ssh:
ssh root@192.168.1.101
Create new new directory that we will share with NFS:
mkdir -p /var/nfsproxmox
Now add all proxmox IP addresses to the NFS configuration file, I'll edit the "exports" file with vim:
vim /etc/exports
Paste configuration below:
/var/nfsproxmox 192.168.1.114(rw,sync,no_root_squash)
/var/nfsproxmox 192.168.1.115(rw,sync,no_root_squash)
/var/nfsproxmox 192.168.1.116(rw,sync,no_root_squash)
Save the file and exit the editor.
To activate the new configuration, re-export the NFS directory and make sure the shared directory is active:
exportfs -r
exportfs -v
Reload NFS exports.

Step 2 - Configure Host

The next step is to configure the hosts file on each Proxmox node.
Log into the pve1 server with ssh:
ssh root@192.168.1.114
Now edit the hosts file with vim:
vim /etc/hosts
Make sure pve1 on the file and then add pve2 and pve3 to the hosts file:
192.168.1.115 pve2.myproxmox.co pve2 pvelocalhost
192.168.1.116 pve3.myproxmox.co pve3 pvelocalhost
Save the file and reboot the pve1:
reboot
Next pve2 - login to the server with ssh:
ssh root@192.168.1.115
Edit the hosts file:
vim /etc/hosts
add configuration below:
192.168.1.114 pve1.myproxmox.co pve1 pvelocalhost
192.168.1.116 pve3.myproxmox.co pve3 pvelocalhost
Save the file and reboot:
reboot
Next pve3 - login to pve3 server with ssh:
ssh root@192.168.1.116
edit the hosts file:
vim /etc/hosts
now add configuration below:
192.168.1.114 pve1.myproxmox.co pve1 pvelocalhost
192.168.1.115 pve2.myproxmox.co pve2 pvelocalhost
Save the file and reboot pve3:
reboot

Step 3 - Create the cluster on Proxmox server pve1

Before creating the cluster, make sure the date and time are synchronized on all nodes and that the ssh daemon is running on port 22.
Log in to the pve1 server and create the new cluster:
ssh root@192.168.1.114
pvecm create mynode
Result:
Corosync Cluster Engine Authentication key generator.
Gathering 1024 bits for key from /dev/urandom.
Writing corosync key to /etc/corosync/authkey.
The command explained:
pvecm: Proxmox VE cluster manager toolkit
create: Generate new cluster configuration
mynode: cluster name
Now check the cluster with command below:
pvecm status
Proxmox status on node 1.

Step 3 - Add pve2 and pve3 to cluster

In this step, we will add the Proxmox node pve2 to the cluster. Login to the pve2 server and add to pve1 "mynode" cluster:
ssh root@192.168.1.115
pvecm add 192.168.1.114
add: adding node pve2 to the cluster that we've created on pve1 with IP: 192.168.1.114.
Add node 2.
Then add pve3 to the cluster.
ssh root@192.168.1.116
pvecm add 192.168.1.114
Add node 3.

Step 4 - Check the Proxmox cluster

If the steps above have been executed without an error, check the cluster configuration with:
pvecm status
Check Proxmox cluster status.
if you want to see the nodes, use the command below:
pvecm nodes
Show list of Proxmox nodes.

Step 5 - Add the NFS share to the Proxmox Cluster

Open Proxmox server pve1 with your browser: https://192.168.1.114:8006/ and log in with your password.
Open Proxmox UI
You can see the pve1, pve2 and pve3 server on the left side.
Now go to the tab "Storage" and click "add". Choose the storage type, we use NFS on Centos server.
Add NFS storage in Proxmox.
Fill in the details of the NFS server:
NFS server details.
ID: Name of the Storage
Server: IP address of the storage
Export: Detect automatically of the shared directory
Content: Content type on the storage
Nodes: Available on node 1,2 and 3
Backups: Max backups
Click add.
And now you can see the NFS storage is available on all Proxmox nodes.
Proxmox node setup

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