XenU deployment and configuration guide¶

Download the image here. This documentation will be updated to version 1.1.

Create a virtual machine from a machine service image.

Creating the virtual machine¶

The virtual machine images and the createvm utility should reside in /opt/xen. If not, it can be downloaded from:

• ftp://yumrepo.canarytek.com/Xen

• The createvm script is run along with the required parameters. For example:
  • Name: test
  • Volume size: 3G
  • Virtual machine image: ''zero51.tgz''
  • RAM: 128
  • IP: 192.168.1.23
  • Bridge Xen: xenbr0
  • Create the machine using the command:

  ./createvm test 3G zero51.tgz 128 192.168.1.23 xenbr0

• The script automatically performs the following steps:
  • Creates a LVM volume for the machine.
  • Creates and initializes a LVM swap volume.
  • Configures the network with a specified IP (for Centos).
  • Generates the virtual machine configuration (The MAC is calculated from the IP).

PICA objects and monitoring¶

Note: To avoid false positives in the monitoring tool, this step should only be done if the machine is fully operational. If the machine is showing critical alerts, add the variable nagios_skip_host = '1', reinstall the Nagios objects and restart Nagios (see below). Using this variable the alerts to the NOC operators are suppressed for machines in a partially installed state (knowledge centre/support/maintenance).

• Ensure that the machine is included in the PICA base group.
• Install PIFIA and load the machine configuration.

pica -iv +F pifia +H ctk.nagios

• The Nagios configuration is updated and the machines are included:

pica -iv +F nagios +H ctk.nagios

pica -xv +F "service nagios restart" +H ctk.nagios

• Check that the new machine appears in the Nagios.
• The execution of warning alerts is forced to ensure that the notifications arrive:

pica -xv +F "scheduler Emergency" +H maquina

pica -xv +F "scheduler Warning" +H maquina

• Install munin-node on the machine:

pica -xv +F "yum install munin-node" +H maquina

pica -xv +F munin +H maquina