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Kevin Mershon

Installing XenServer Tools on Ubuntu 10.04 - 0 views

www.jansipke.nl/enserver-tools-on-ubuntu-10-04

XenServer Ubuntu 10.04 paravirtualization mode PV XenTools

shared by Kevin Mershon on 12 Apr 12 - Cached
  • Create a VM from the Other install media template
  • Attach the Ubuntu 10.04 ISO to the DVD drive of the VM
  • Start the VM
  • ...19 more annotations...
  • At the disk partitioning stage make sure to replace Ext4 with Ext3, or create a specific boot partition with Ext3
  • Select at least the OpenSSH server package to be able to log in to the VM remotely
  • Finish installation and boot the VM
  • Connect to the VM using SSH
  • sudo cp /etc/init/tty1.conf /etc/init/hvc0.conf sudo vi /etc/init/hvc0.conf
  • Replace all occurrences of tty1 with hvc0
  • Read /boot/grub/grub.cfg
  • Copy the contents of menuentry near the bottom to a temporary text file, to be used as input for the makepv.sh script that we will use later on menuentry 'Ubuntu, with Linux 2.6.32-21-server' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set 02899ea9-1876-4e7b-8ef8-2b09b598cedb linux /boot/vmlinuz-2.6.32-21-server root=UUID=02899ea9-1876-4e7b-8ef8-2b09b598cedb ro quiet initrd /boot/initrd.img-2.6.32-21-server }
  • Make special note of /boot/vmlinuz…, root=UUID=… and /boot/initrd.img…
  • Shutdown the VM
  • Connect to the XenServer host with SSH
  • Run the makepv.sh script, replacing my-vm-name with the actual name of your VM
  • Boot the VM and log in with SSH
  • In XenCenter, attach xs-tools.iso to the DVD drive of the VM
  • sudo mount /dev/cdrom1 /mnt sudo dpkg -i /mnt/Linux/xe-guest-utilities_5.5.0-466_amd64.deb sudo umount /mnt
  • In XenCenter, detach xs-tools.iso from the DVD drive of the VM (this ensures that XenServer does not complain about too many bootable devices)
  • Reboot the VM and log in with SSH
  • sudo update-rc.d -f xe-linux-distribution remove sudo update-rc.d xe-linux-distribution defaults
  • Reboot the VM for the last time
Kevin Mershon

Monit: Monitor SSHD Server and Auto Restart SSH If It Does Not Respond - 0 views

www.cyberciti.biz/...onit-sshd-server-configuration

monit linux process monitor sshd

shared by Kevin Mershon on 12 Apr 12 - Cached
  • /etc/monit/monitrc
  • check process sshd with pidfile /var/run/sshd.pid start program "/etc/init.d/ssh start" stop program "/etc/init.d/ssh stop" if failed port 22 protocol ssh then restart
Kevin Mershon

Tips for XenServer Stability - 0 views

forums.citrix.com/thread.jspa

XenServer Citrix NTP Clock

shared by Kevin Mershon on 12 Apr 12 - No Cached
  • There's a timeout parameter used by NTP that if things get out of sync by too much, it won't sync them at all.
  • The default is something low, I think just 128 msec, which is pretty small under some circumstances.
  • edit the /etc/sysconfig/ntpd on the control VM to sync hardware. Default is no. Once done, please cycle ntpd. You will see an extra line for hardware clock. If possible, all VMs and XenServer should use a local physical time server.
    • Kevin Mershon
      Kevin Mershon on 12 Apr 12
       
      Changing the system clock settings does not seem to have had any effect on the server's behavior.
  • ...1 more annotation...
  • if you have 4 VCPUs assigned to a guest, the guest would need to wait until 4 cores (physical) are free before it can access the CPU directly
Kevin Mershon

Citrix Forums: Centos 6 - 0 views

forums.citrix.com/thread.jspa

centos 6.0 xentools xenserver xen server rpm yum

shared by Kevin Mershon on 12 Apr 12 - No Cached
  • Kevin Mershon on 12 Apr 12
     
    mount /dev/xvdd /mnt rpm -Uhv /mnt/Linux/xe*x86_64.rpm umount -fl /dev/xvdd
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