Configuring for multiple regions
OpsCenter can operate in multiple regions or IP forwarding deployments. Use the following approach for deployments where a public IP forwards to a private IP on the agent, but that machine is not aware of (that is, can't bind to) the public IP.
address.yaml
The location of the address.yaml file depends on the type of installation:
- Package installations: /var/lib/datastax-agent/conf/address.yaml
- Tarball installations: install_location/conf/address.yaml
To configure DataStax agents for multiple regions or IP forwarding:
Procedure
- Open the address.yaml file for editing.
-
Add the following options to the address.yaml
file:
- local_interface: (Optional) The IP used to identify the node. If broadcast_address is set in cassandra.yaml, this should be the same as that; otherwise, it is typically the same as listen_address in cassandra.yaml. A good check is to confirm that this address is the same as the address that nodetool ring outputs.
- agent_rpc_interface: The IP that the agent HTTP server listens on. In a multiple region deployment, this is typically a private IP.
- agent_rpc_broadcast_address: The IP that the central OpsCenter process uses to connect to the DataStax agent.
- Repeat the above steps for each node.
Example
Region: us-west Availability Zone: us-west-2 OpsCenter host public IP: 198.51.100.5 private IP: 10.11.12.10 Node1 public IP: 198.51.100.1 private IP: 10.11.12.1 Cassandra (cassandra.yaml) broadcast_address: 198.51.100.1 listen_address: 10.11.12.1 Agent (address.yaml) local_interface: 198.51.100.1 agent_rpc_interface: 10.11.12.1 agent_rpc_broadcast_address: 198.51.100.1 stomp_interface: 198.51.100.5 Node2 public IP: 198.51.100.23 private IP: 10.11.12.15 Cassandra (cassandra.yaml) broadcast_address: 198.51.100.23 listen_address: 10.11.12.15 Agent (address.yaml) local_interface: 198.51.100.23 agent_rpc_interface: 10.11.12.15 agent_rpc_broadcast_address: 198.51.100.23 stomp_interface: 198.51.100.5 Region: us-east Availability Zone: us-east-1 Node1 public IP: 203.0.113.20 private IP: 10.11.13.28 Cassandra (cassandra.yaml) broadcast_address: 203.0.113.20 listen_address: 10.11.13.28 Agent (address.yaml) local_interface: 203.0.113.20 agent_rpc_interface: 10.11.13.28 agent_rpc_broadcast_address: 203.0.113.20 stomp_interface: 198.51.100.5