This document describes how to troubleshoot an issue that occurs when
you try to install the Cisco Unified Communications Manager Subscriber server.
When this issue occurs, the Critical Error
message appears, and the post application installation fails.
Readers of this document must confirm that these steps are completed on
After you install Cisco Unified Communications Manager (Publisher) on
your server, you must set some configuration parameters and perform other
post-installation tasks before other servers in the cluster are installed.
Note: Refer to
Tasks for more information.
The node and feature licenses must be loaded on the
Cisco Unified Communications Manager services must be started on the
You must install the same software version on all nodes in the
The information in this document is based on Cisco Unified
Communications Manager versions 6.x and 7.x.
The information in this document was created from the devices in a
specific lab environment. All of the devices used in this document started with
a cleared (default) configuration. If your network is live, make sure that you
understand the potential impact of any command.
Technical Tips Conventions for more information on document
The installation of a Cisco Unified Communications Manager Subscriber
fails, and this error appears:
** Critical Error **
The installation has encountered a unrecoverable
internal error. For further assistance report the
following to your support provider.
install PostInstall 126.96.36.19900-5 188.8.131.5200-5
/common/log/install/install.log" exited with errors(1)
The system will now halt.
This error is generated while a Subscriber is built to work with an
existing Cisco Unified Communications Manager Publisher cluster.
Check installation logs and collect the dump files for install logs.
For this you can use the Cisco Unified Real-Time Monitoring Tool on the
The install log shows this error, which is gathered via USB drive
after installation failure:
01/26/2010 14:27:09 IPM|(CAPTURE) Tue Jan 26 14:27:09 2010
dbllib.getDataFromPub DEBUG: <Fault 1: "dbllib.SysError:'Error executing
[/home/sftpuser/sftp_connect.sh -b /usr/local/cm/db/sftp_batch
sftpuser@cmsub2] returned '">|<LVL::Debug>
The main cause of this error is that the Subscriber server cannot
access the DNS server. Complete these steps in order to resolve the
Ensure connectivity from the switch port of the new Subscriber to
the DNS server <ip address>.
Make sure your DNS server has a reverse name lookup entry for the
new Subscriber and the Publisher.
Test nslookup with this:
- IP address of the server
- Hostname of the server
- FQDN of the server
for both the Subscriber and the Publisher.
Ensure you do not use an underscore in the server name of the
Publisher or the new Subscriber. This is a limitation of the Microsoft DNS
Linux is case sensitive so ensure all hostnames and FQDNs are in
After you complete these steps, start the installation process of
When the First Node Configuration displays, choose
No to configure the new server as a subsequent node.
Complete the procedure to configure a subsequent node in the
With these steps, you can make the DNS server reachable and install the
Cisco bug ID
(registered customers only)
details a known issue: IBM x3650M2,7835I3,7845I3 install fails - Could Not
Detect Version. Refer to the bug details for additional information.