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OpenVZ/Proxmox - Container to Template

Published: 11-07-2014 | Author: Remy van Elst | Text only version of this article


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This guide will show you how to convert an OpenVZ (Proxmox) container to a template. You can then use this template on any other OpenVZ (or proxmox) host. This can be used either to migrate containers or to create a kind of master image to deploy new hosts from.

This guide is tested on a proxmox machine running proxmox version 3.2.

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Login as root to the proxmox machine via ssh.

Get a list of containers using vzlist:

 CTID      NPROC STATUS    IP_ADDR         HOSTNAME
 100         85 running   10.21.21.5      master.raymii.nl
 101         34 running   10.21.21.6      test-master.raymii.nl

I want to create a template of master.raymii.nl which has ID 100.

You must stop the container before creating the image:

vzctl stop 101
Stopping container ...
Container was stopped
Container is unmounted

Go to the container folder:

cd /var/lib/vz/private/100

Then start the image creation:

tar -cvzpf /var/lib/vz/template/cache/master.raymii.nl.tar.gz .

This will place the image in /var/lib/vz/template/cache/master.raymii.nl.tar.gz. This file can be copied and deployed on another host, or used on the same host as a template.

Tags: bash , kvm , openvz , proxmox , proxmox-ve , ssh , tutorials , virtualization