Deploy Multiple Composer Instances

Intra-service communication must be enabled by making any necessary networking (ports) and firewall changes.

To deploy multiple Composer nodes (or instances) in a new high availability environment:

1. Install the Composer instance as though it were a single instance (and not running in a high availability environment). See Install Composer v5.

2. For each instance, run the following commands to set up the environment variables for the installation:

   export ZOOMDATA_CONSUL_ADDRESS=<instance_ip>:8500
   export ZOOMDATA_CONSUL_CLIENT=0.0.0.0
   export ZOOMDATA_POSTGRES_HOST=<postgres-host>
   export ZOOMDATA_POSTGRES_PORT=<postgres-port>
   export ZOOMDATA_POSTGRES_USER=<postgres-db-username>
   export ZOOMDATA_POSTGRES_PASS=<postgres-db-password>

   where:

   • <instance_ip> is the IP address of the Composer instance
   • <postgres-host> and <postgres-port> are the host name and port number of the Composer PostgreSQl data store
   • <postgres-db-username> and <postgres-db-password> are the user name and password required to access the Composer PostgreSQL data store.

3. Obtain the installation script from Composer Technical Support and run:

   sudo -E /bin/sh bootstrap-zoomdata.run

4. After the installation is complete, configure the Consul instance or instances needed for your high availability environment. See Configure the Consul in a High Availability Installation.

5. Repeat these steps for every Composer instance (node) in your Composer cluster.