Aria Operations for Logs node expansion fails with "Unable to perform action" error

Products

• VCF Operations/Automation (formerly VMware Aria Suite)

Issue/Introduction

When attempting to add a new node to an existing Aria Operations for Logs cluster, the operation fails with the following generic error: "Unable to perform action"

Diagnostic testing confirms connectivity failures between the existing cluster and the new node:

• curl -kv --location https://<REDACTED_IP>:9543/api/v2/internal/ping fails.

• curl -kv telnet://<REDACTED_IP>:9543 fails to establish a connection.

Investigation reveals that network traffic on port 9543 is being blocked by external firewalls or network isolation (different network segments/bubbles), preventing required SSL communication for cluster integration.

Environment

Aria Operations for Logs 8.x

Cause

Network port 9543 is blocked by a firewall or network isolation between the new node and the existing cluster nodes.

Resolution

 

• Verify network connectivity between the existing cluster nodes and the new node.

• Ensure that port 9543 (TCP) is open bidirectionally between all nodes in the Aria Operations for Logs cluster.

• If nodes are located in different network segments or "bubbles," update firewall rules to allow SSL traffic on port 9543.

• Test connectivity using the following command from an existing node to the new node: curl -kv telnet://<NEW_NODE_IP>:9543

• Once connectivity is verified, retry the add node operation from the Aria Operations for Logs internal configuration UI.

 

Additional Information

For a full list of required ports, see the VMware Ports and Protocols tool.