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1. Backup Configuration: Make a backup copy of the opCommon.json file before making any changes.

2. Add NATS Server Configuration: Ensure the following configuration is included in opCommon.json on all servers. In the below example we have added the Main Primary FQDN and port to be utilized in the nats_server attribute, you can find this in the database section.

   Code Block
   language json
   "nats_server": "opha-primary1.opmantek.net:4222"

   IMPORTANT

   Delete the following line from the opCommon.json file.

3. Code Block
   language json
   "db_mongo_cluster": [],

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systemctl restart mongod

5. Starting Services

5.1 Start NATS (on Main Primary Only)

Start the NATS service on the Main Primary server ONLY:

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