[ClusterLabs] Interacting with Pacemaker from my code

[Nishant Nakate]

Hi All,

I am new to this community and HA tools. Need some guidance on my current
handling pacemaker.

For one of my projects, I am using pacekmaker for high availability.
Following the instructions provided in setup document, I am able to create
a new cluster with three nodes. Tested the failover and it works as
expected. Now, I need to run our own code on this nodes. I am going to use
Active-Pasive topology for our system architecture.

I would like to know, how can I detect from my code if DC has changed ? So
that tools running on new DC can take over the controll of application
logic.
Also, how to configure my processes (tools) as resources so that Pacemaker
can make them HA.

Please let me know if you need any clarification or any other information.

Thanks in advance !!!
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