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.
To configure DataStax agents for multiple regions or IP forwarding:
Procedure
-
Open the address.yaml file for editing.
- Packaged installs:
/var/lib/opscenter-agent/conf directory
- Tarball installs:
<install_location>/conf directory
- Packaged installs:
-
Add the following option 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
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