As of XenServer 6.5, you can now install updates using XenCenter, even in the free version.

• Version upgrades are done with the Rolling Pool Upgrade tool within XenCenter
• Command line updates are more reliable and faster
• Updates to the pool master are applied pool-wide
  • Be sure to reboot hosts if needed after updates, again starting with the pool master

Download Updates: http://xenserver.org/overview-xenserver-open-source-virtualization/download.html

The XenServer Dom0 disk space is limited and easy to fill up. You should clean out any unnecessary files before, during and after updates to keep from filling the disk. For example, on a large update like a Service Pack, you might want to just install the Service Pack, delete any unneeded files, then proceed with any other updates.

xe patch-list |grep name-label |sort

As of XenServer 7.0, we use XenCenter to do the updates.

The first couple of updates may already be installed by default on newer ISO images.

• Hotfix XS70E002
• Hotfix XS70E004
• Hotfix XS70E005
• Hotfix XS70E009
• Hotfix XS70E013
  • Includes XS70E011
• Hotfix XS70E018
• Hotfix XS70E023
  • Includes XS70E008, XS70E012, XS70E014, XS70E019
• Hotfix XS70E024
• Hotfix XS70E025
  • Includes XS70E006, XS70E010, XS70E017, XS70E021
• Hotfix XS70E026
  • Includes XS70E016
• Hotfix XS70E027
  • Includes XS70E003
• Hotfix XS70E028
• Hotfix XS70E029
  • Includes XS70E015, XS70E020, XS70E022
• Hotfix XS70E031
  • Includes XS70E015, XS70E020, XS70E022, XS70E029

# XenServer 6.5 - limiting bandwidth to 500KBps
wget --limit-rate=500k http://downloadns.citrix.com.edgesuite.net/10340/XS65ESP1.zip
# reboot needed

# XenServer 6.5 SP1 - limiting bandwidth to 500KBps
wget --no-check-certificate --limit-rate=500k -O XS65ESP1012.zip \
  https://support.citrix.com/supportkc/filedownload?uri=/filedownload/CTX202481/XS65ESP1012.zip
wget --no-check-certificate --limit-rate=500k -O XS65ESP1024.zip \
  https://support.citrix.com/supportkc/filedownload?uri=/filedownload/CTX207337/XS65ESP1024.zip
wget --no-check-certificate --limit-rate=500k -O XS65ESP1027.zip \
  https://support.citrix.com/supportkc/filedownload?uri=/filedownload/CTX212401/XS65ESP1027.zip
wget --no-check-certificate --limit-rate=500k -O XS65ESP1035.zip \
  https://support.citrix.com/supportkc/filedownload?uri=/filedownload/CTX216249/XS65ESP1035.zip
wget --no-check-certificate --limit-rate=500k -O XS65ESP1039.zip \
  https://support.citrix.com/supportkc/filedownload?uri=/filedownload/CTX217643/XS65ESP1039.zip
wget --no-check-certificate --limit-rate=500k -O XS65ESP1041.zip \
  https://support.citrix.com/supportkc/filedownload?uri=/filedownload/CTX218545/XS65ESP1041.zip
# reboot needed

for x in XS*.zip; do unzip $x; done

for x in *.xsupdate; do xe patch-upload file-name=$x; done

Then install the updates one at a time, in order, using the UUID's printed by the last command:

xe patch-pool-apply uuid=<uuid-of-update>

You can use xe patch-list | more to show more patch details such as UUIDs, names and reboot recommendations.

Migrate any running VMs off of the Pool Master:

xe vm-migrate vm=<vm-name> host=<pool-member-host>

If the pool is HA enabled, you will have to disable HA, reboot the pool master, then reboot the pool member servers one by one after the pool master comes back up. Finally, re-enable HA.

Don't put the Pool Master in Maintenance Mode unless you want to designate another member server as Pool Master.

xe pool-ha-disable
xe pool-designate-new-master host-uuid=<UUID>
xe pool-ha-enable

Then restart XAPI or reboot the XenServer host as necessary:

xe-toolstack-restart

or

reboot

For a single XenServer, the above commands would suffice when run from the commmand line of the XenServer.

To update multiple XenServers, you would download the updates once, then push them to multiple servers by running additional commands specifying server/user/password on the 'xe patch-upload' and 'xe patch-pool-apply' commands.

First, we delete all the downloaded stuff (everything in /root):

cd ~
rm -rf *

Then, to clean patches pool-wide we run:

for i in `xe patch-list --minimal|tr "," " "`;do xe patch-pool-clean uuid=$i;done