42 Posts

Ansible - BadHostKeyException

January 27, 2018 0 Comments ansible, cisco, ssh

When executing an ansible playbook, you may get the following error:

An exception occurred during task execution. To see the full traceback, use -vvv. The error was: paramiko.BadHostKeyException: Host key for server switch-name does not match!

This probably happened after you changed the name of your network device, and generated new RSA keys. Or, if you are using DNS

Cisco CSR License Install

May 17, 2017 0 Comments cisco

Found a great blog post on installing a demo license on the CSR router (, but I came across one additional (and important step below).

TL;DR - Make sure to accept the end user agreement and SAVE before reloading!

% Unfortunately EULA is not detected for following feature/features:
% security
% Please

CUCM IM change postgres external database

February 24, 2016 0 Comments cisco, cucm, call-manager

If you need to change the postgres external database for CUCM, there a few steps to follow:

  1. Change database server name
    a. External server setup -> External databases
  2. Unassign servers and disable persistent chat
    a. Messaging -> Group Chat and Persistent Chat
    b. Change "Persistant Chat Database Assigntment" to unsassigned
    c. Uncheck "Enable Persistant Chat&