Field Notice: FN - 64270 - Cisco Unified Communications Manager IM & Presence IMDB replication fails - Software Upgrade Recommended

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Updated:October 11, 2017
Document ID:FN64270

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Notice

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Revision History

Revision Publish Date Comments
1.0
06-Mar-17
Initial Release
10.0
11-Oct-17
Migration to new field notice system

Products Affected

Affected OS Type Affected Release Affected Release Number Comments
NON-IOS
9.1
9.1(1),9.1(1a),9.1(1b),9.1(1)SU1,9.1(1)SU2,9.1(1)SU3a,9.1(1)SU4,9.1(1)SU5,9.1(1)SU6,9.1(1)SU6a,9.1(1)SU7
Unified Communications Manager IM and Presence Service
NON-IOS
10.5(2)
10.5(2),10.5(2)SU1,10.5(2)SU2,10.5(2)SU2a,10.5(2b)
Unified Communications Manager IM and Presence Service
NON-IOS
10.5(1)
10.5(1),10.5(1)SU1,10.5(1)SU2,10.5(1)SU3
Unified Communications Manager IM and Presence Service

Defect Information

Defect ID Headline
CSCuz33501 IMDB replication fails to start on a subscriber node after the publisher node is powered off and on.

Problem Description

Cisco Unified Communications Manager IM & Presence in-memory database (IMDB) replication fails to start on a server in a subcluster when a peer node is powered off and brought back online. When IMDB replication fails, end users are unable to log in and/or experience presence related issues on their endpoints.

Background

Cisco has found that the IMDB replication service on a Cisco Unified Communications Manager IM & Presence subscriber node fails to start when a Cisco Unified Communications Manager IM & Presence publisher node is powered off and powered on again.

Problem Symptom

End users might start to face login and IM & Presence related issues. Due to IMDB replication queue build up, it might cause the memory buffer to fill up over a period of time which results in performance issues on the server.

Workaround/Solution

In order to verify IMDB replication has failed, enter the command utils imdb replication status in the CLI for Cisco Unified Communications Solutions.

 

 

For example:

 

 

admin:utils imdb_replication status

 

Running IMDB DSN (ttsoft, ttlogin, ttreg) replication checks on all nodes in cluster ...

 

 

NOTE: For diagnostic test to run, ports 6603, 6604 & 6605 must be open on any firewalls between IM&P Servers

 

 

Sub Cluster Name / Id :: THDAMainSubcluster / 1

 

Checking connectivity & removing old data prior to running diagnostic

 

Cisco Presence Datastore Replication

 

cuptest01.local -> cuptest02.local Passed

 

cuptest02.local -> cuptest01.local Passed

 

Cisco Login Datastore Replication

 

cuptest01.local -> cuptest02.local Passed

 

cuptest02.local -> cuptest01.local Failed

 

Gathering Debug Info for failed DSN ... please wait

 

Cisco SIP Registration Datastore Replication

 

cuptest01.local -> cuptest02.local Passed

 

cuptest02.local -> cuptest01.local Passed

 

Gathering Debug Info for failed DSN ... please wait

 

 

FAILED :: IMDB DSN Replication is suspect on some/all nodes within the cluster

 

 

 

Workaround

 

 

Customers can perform these steps in order to restore IMDB replication as a workaround until the cluster is upgraded with the fixed version.

 

 

1. Disable High Availability (HA) for the IMP sub-cluster.

 

 

Log in to Cisco Unified CM Administration > System > Presence Redundancy Group. Uncheck the HA check box.

 

 

2. Log in to the CLI and enter these commands.

 

 

a. Stop Cisco Presence Engine on all IM & Presence nodes.

 

 

utils service stop Cisco Presence Engine

 

 

b. Verify all the Datastore Services run: Cisco Login Datastore, Cisco Route Datastore, Cisco Presence Datastore, and Cisco SIP Registration Datastore.

 

 

utils service list

 

 

c. Restart the Cisco Config Agent on each IM & Presence node one at a time.

 

 

utils service restart Cisco Config Agent

 

 

d. Start Cisco Presence Engine.

 

 

utils service start Cisco Presence Engine

 

 

3. Enable HA for the IM & Presence subcluster.

 

 

Log in to Cisco Unified CM Administration > System > Presence Redundancy Group. Check the HA check box.

 

 

 

Solution

 

 

Cisco recommends that you upgrade all nodes in the cluster to Cisco Unified Communications Manager IM & Presence Service Version 10.5(2)SU3 or later. See the Cisco Unified Communications Manager IM and Presence Service Version 10.5(X) Download Software page (Cisco.com login required).

 

 

 

 

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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