Opevz commands

OpenVz commands
Some of commonly used openvz commands

VZ Information To list all the running/stopped VPS in the node
vzlist -a

To list all the running VPS in the node
vzlist

To display the templates present in the server
vzpkgls

Creating a VPS To create a VPS with VEID 101 and ostemplate fedora-core-4 with vps.basic configuration
vzctl create 101 –ostemplate fedora-core-4 -.config vps.basic

Deleting a VPS To destroy a VPS with VEID 101
vzctl destroy 101

Configuring VPS (The changes are saved in /etc/vz/conf/<VEID>.conf) To automatically boot when a node is up
vzctl set 101 –onboot yes –save

To set hostname
vzctl set 101 –hostname test101.my.org –save

To add an IP address
vzctl set 101 –ipadd 10.0.186.1 –save

To delete an IP address
vzctl set 101 –ipdel 10.0.186.1 –save

To set the name servers
vzctl set 101 –nameserver 192.168.1.165 –save

To set the root password of VPS 101
vzctl set 101 –userpasswd root:password

To set shortname for VPS
vzctl set 101 –name test101 –save

Start/Stop/Restart VPS To start a VPS
vzctl start 101

To start a disabled VPS
vzctl start 101 –force

To stop a VPS
vzctl stop 101

To restart a VPS
vzctl restart 101

To know the status of a VPS
vzctl status 101

To get the details of the VPS like VEID, ClassID, number of processes inside each VPS and the IP addresses of VPS
cat /proc/vz/veinfo

To enter into a VPS 101
vzctl enter 101

To execute a command in VPS 101
vzctl exec 101 command — replace command with the command you need to execute
vzctl exec 101 df -h

Managing Disk Quotas To assign disk quotas – First limit is soft limit, second limit is hard limit
vzctl set 101 –diskspace 10485760 –save  ==>> for setting 10GB
OR
vzctl set 101 –diskspace 1048576 –save   ==>> for setting 1GB

To assign disk inodes
vzctl set 101 –diskinodes 90000:91000 –save

To check the disk quota of a VPS
vzquota stat 101 -t

Managing CPU quota To display the available CPU power
vzcpucheck

To set the number of CPUs available to a VPS
vzctl set 101 –cpus 2 –save

To set the minimum and maximum CPU limits
vzctl set 101 –cpuunits nnnn –cpulimit nn –save

(cpuunits is a an absolute number (fraction of power of the node) and cpulimit is taken as percentage)

Managing memory quota To display memory usage
vzmemcheck -v

To set kmem
vzctl set 101 –kmemsize 2211840:2359296 –save

To set privvmpages
vzctl set 101 –privvmpages 2G:2G –save

Other Commands To copy/clone a VPS
vzmlocal -C <source_VEID>:<desitnation_VEID>

To disable a VPS
vzctl set 101 –disabled yes

To enable a VPS
vzctl set 101 –disabled no

To suspend a VPS
vzctl suspend 101

To resume a VPS
vzctl resume 101

To run yum update on a VPS
vzyum 101 -y update

To install a package using yum on VPS
vzyum 101 -y install package

To install a package using rpm on VPS
vzrpm 101 -ivh package

Refer : http://download.openvz.org/doc/OpenVZ-Users-Guide.pdf