Revision as of 04:18, 7 September 2014

<yambe:breadcrumb>OpenvZ</yambe:breadcrumb>

Installing openVZ on CentOS

Installation steps have been learned from http://wiki.openvz.org/Quick_installation

Following steps can be used to install openVZ on CentOS machine:

Download openvz.repo file from http://download.openvz.org/openvz.repo
mv openvz.repo /etc/yum.repos.d
yum install vzkernel.x86_64 ovzkernel.x86_64 vzctl.x86_64 vzquota.x86_64 ploop
Disable SELinux
Enable forwarding of packets in iptables firewall
Enable packet forwardng in /etc/sysctl.conf (net.ipv4.ip_forward=1)
Create a folder where you want to store openVZ related stuff. Create symbolic link of choosen folder as /vz.
Download templates from http://download.openvz.org/template/precreated/ to '/vz/template/cache.
Optionally Edit file '/etc/grub.conf' and change title of kernel with word stab in it to openVZ. Remove all parameters passed to this kernel except "ro root=...". The setup works better without doing this as it does not leads to printing of too many messages during boot.
Edit or create '/etc/vz/vznet.conf' and write following line in it:
```
EXTERNAL_SCRIPT="/usr/sbin/vznetaddbr"
```
Edit '/etc/vz/vz.conf' and set 'VE_LAYOUT=simfs'
Edit '/etc/modprobe.d/openvz.conf' so that it has
```
options nf_conntrack ip_conntrack_disable_ve0=0
```
Edit '/etc/vz/conf/ve-vswap-256m.conf-sample' to change value of NETFILER to
```
NETFILTER="full"
```
Reboot into openVZ kernel

Note that container filesystems get stored in /vz/private/<container_id>

@@ Line 14: / Line 14: @@
 #Download templates from http://download.openvz.org/template/precreated/ to '<tt>/vz/template/cache</tt>.
 #'''Optionally''' Edit file '<tt>/etc/grub.conf</tt>' and change title of kernel with word stab in it to openVZ. Remove all parameters passed to this kernel except "ro root=...". The setup works better without doing this as it does not leads to printing of too many messages during boot.
+#Edit or create '<tt>/etc/vz/vznet.conf</tt>' and write following line in it:
+#:<pre>
+#::EXTERNAL_SCRIPT="/usr/sbin/vznetaddbr"
+#:</pre>
+#Edit '<tt>/etc/vz/vz.conf</tt>' and set '<tt>VE_LAYOUT=simfs</tt>'
+#Edit '<tt>/etc/modprobe.d/openvz.conf</tt>' so that it has
+#:<pre>
+#::options nf_conntrack ip_conntrack_disable_ve0=0
+#:</pre>
+#Edit '<tt>/etc/vz/conf/ve-vswap-256m.conf-sample</tt>' to change value of NETFILER to
+#:<pre>
+#::NETFILTER="full"
+#:</pre>
 #Reboot into openVZ kernel
 Note that container filesystems get stored in /vz/private/&lt;container_id&gt;