Today I will outline the options to kill an unresponsive OpenVZ container.
How to change the ID of an OpenVZ Container
Here are the steps that need to be taken to change the ID of an OpenVZ Container. OpenVZ is a virtualization technology for Linux.
How to Backup OpenVZ Containers with vzdump on CentOS 6
OpenVZ is a Linux based Kernel virtualization technology developed by SWSoft for its commercial product Virtuozzo. The modified Linux Kernel and the system utilities are released under an OpenSource license. Vzdump is a shell based backup program for OpenVZ virtual
Solution for amavisd error – TROUBLE in process_request: Error writing a SMTP response to the socket: Broken pipe – on OpenVZ server
If you get error messages from amavisd similar to the one posted below on a server which is virtualized with OpenVZ: Mar 5 09:09:02 v100 amavis[17378]: (17378-14) (!!)TROUBLE in process_request: Error writing a SMTP response to the socket: Broken pipe
How to enable time synchronisation between OpenVZ host and guest system
If you want to set the time in a OpenVZ Guest automatically, execute the following command on the host system: vzctl set 101 --capability sys_time:on --save and restart the guest system: vzctl restart 101 101 is the ID of the
How to solve the PHP XCache error: /dev/zero: No space left on device
If you get the error "/dev/zero: No space left on device" in the apache error.log on a OpenVZ virtual machine, then the shared memory size in the xcache.ini is too high or the xcache.mm_path is set wrong. Edit the file
Secure /tmp and /dev/shm directories in a OpenVZ enviroment
The /tmp and /dev/shm directories of a OpenVZ virtual machine shall be mounted without suid and exec permissions. To achieve this, create a a shell script on the host server for every virtual machine which contains the commands to remount
Migrate physical server system to OpenVZ virtual machine
In case you plan to virtualize your server infrastructure and migrate physical servers to OpenVZ virtual machines, you may find this tutorial helpful: http://wiki.openvz.org/Physical_to_container I used this to migrate a ISPConfig Debian system to OpenVZ successfully.
Backing up OpenVZ virtual machines with vzdump
Vzdump is a perl script that makes live backups of OpenVZ virtual machines very easy. The following steps are for Debian Linux but vzdump can be used on all other linux distributions. Only the installation may vary. Download and install