OpsCenter 2.1 and later 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.
To configure OpsCenter agents for multiple regions or IP forwarding:
Open the address.yaml file for editing.
The location of this file depends on the type of installation:
Add the following option to the address.yaml:
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 agent.
Repeat the above steps for each node.
For example, here is the configuration for a three node cluster that spans two regions:
Region: us-west Availability Zone: us-west-2 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_address: 198.51.100.1 agent_rpc_interface: 10.11.12.1 agent_rpc_broadcast_address: 198.51.100.1 OpsCenter (opscenterd.conf) interface: 198.51.100.1 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_address: 198.51.100.23 agent_rpc_interface: 10.11.12.15 agent_rpc_broadcast_address: 198.51.100.23 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_address: 203.0.113.20 agent_rpc_interface: 10.11.13.28 agent_rpc_broadcast_address: 203.0.113.20