Upgrade CUCM Subscriber after the CUCM Publisher, but when ?
Dear Networkers,
Whe we do have a CUCM cluster to upgrade, i know that we should start by upgrading the publisher then upgrading the subscribers one by one.
My question :
I remember i read somewhere that we can start upgrading the subscriber during the upgrade of the publisher but when the publisher reaches a special step in the displayed status in the output of the OS upgrade web page... I can't remember what was that step..
Can you please help ?
Thanks in advance.
Hi Haouaswajih,
Upgrade a cluster:
When you upgrade a cluster to Cisco Unified Communications Manager 9.0(1), begin upgrading the publisher
node first. You can begin upgrading subsequent nodes in parallel after the publisher node reaches a specified
point in the upgrade. The remainder of this section describes how to determine when you can begin to upgrade
the subsequent nodes.
During the upgrade of the publisher node, view the installation log, install_log_.log, by using
the Software Installation/Upgrade window in Cisco Unified Communications Operating System Administration
or the command line interface (CLI). You can begin the upgrade of the subsequent nodes after the following
information displays in the log:
PRODUCT_TARGET is
PRODUCT_NAME is
PRODUCT_VERSION is
You can also use the CLI to search for the relevant information in the install log by following this procedure:
Procedure
Step 1 List the install logs; for example:
file list install install_* date
install_log_2008-10-01.09.41.57.log install_log_2008-10-08.12.59.29.log
install_log_2008-10-14.09.31.06.log
dir count = 0, file count = 3
Step 2 Search the most recent install log for the string PRODUCT_VERSION; for example:
file search install install_log_2008-10-14.09.31.06.log PRODUCT_VERSION
Searching path: /var/log/install/install_log_2008-10-14.09.31.06.log
Searching file: /var/log/install/install_log_2008-10-14.09.31.06.log
10/14/2008 09:52:14 upgrade_os.sh|PRODUCT_VERSION is
7.1.0.39000-97|
Search completed
Step 3 When the file search command finds the PRODUCT_VERSION string in the install log, you can start the
upgrade of the subsequent nodes.
If you want to upgrade the subsequent nodes in parallel with the publisher node, do not choose
the Reboot to upgraded partition on either publisher node or subsequent nodes while configuring
the upgrade options. If selected, the publisher node may complete its upgrade and reboot while
the subsequent nodes are upgrading, which causes the upgrade of the subsequent nodes to fail.
Caution
When you are ready to activate the new version, you must activate the new software on the publisher node
before activating it on all other nodes.
Refer page 23 onwards in the below link,
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/upgrade/9_0_1/CUCM_BK_U8D523AB_00_upgrade-guide-cucm-90.pdf
Hope this helps.
Anand
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