Overview
Let me first give a short overview of what we want to accomplish. I am currently helping to deploy a TripleO Openstack Cloud, and we would like to use a different way of storing the logs provided by the rsyslog service that is created from the following heat template: rsyslog-container-puppet.yaml.
Instead of relying on elasticsearch to store the logs we would like to configure rsyslog to pass the logs to a graylog instance instead (using tls). This should be accomplished during the deployment process itself.
Current considerations
The first consideration was to override only specific parameters using the process outlined in this RedHat guide. Would it be possible to override configuration values of the rsyslog service using ExtraPreConfig?
The second consideration was to create a custom heat-template based on the original rsyslog template. If this would be the way to go, could you give some advice as to how to do it. I know you can provide custom templates using --templates argument when deploying the overcloud. But what I do not understand is if there are dependencies to the heat template and where I would start to implement the custom rsyslog template to store logs to graylog.
I hope you can help me find a solution to the problem at hand.
Best regards.
