Get error "Communication issues detected" in Runtime Manager in your cluster configuration

SYMPTOM

• In Runtime Manager, you see "Communication issues detected" in a cluster.
• The running cluster status is yellow 

For example:

 

CAUSES

• Runtime Manager UI performs an API call to our platform, and it's detecting cluster communication issues in that API response. 

SOLUTION

• If the servers in Runtime Manager are not in green "Running" status, please consider updating your Runtime Manager agent.
• Otherwise, please check the following article: How to troubleshoot communication issues between the Mule Runtime Agent and the OnPrem server
• If the issue remains, please contact MuleSoft Support providing the Runtime Manager API call response. There are two ways to get the response:
  • Option A: Do it manually, by using the same API: ARM REST Services. The following is a response example from the 7386123 cluster: 

    {
      "data": [
        {
          "id": 7386123,
          "timeCreated": 1620242761270,
          "timeUpdated": 1620330306952,
          "name": "testing",
          "type": "CLUSTER",
          "status": "RUNNING",
          "multicastEnabled": false,
          "primaryNodeId": 7386090,
          "servers": [...],
          "visibilityMap": {
            "mapNodes": [
              {
                "serverId": 7386097,
                "visibleNodeIds": [
                  7386097,
                  7386090
                ],
                "unknownNodeIps": []
              },
              {
                "serverId": 7386090,
                "visibleNodeIds": [
                  7386090,
                  7386097
                ],
                "unknownNodeIps": []
              }
            ]
          }
        }
      ]
    }

  • Option B: Record an HTTP archive while opening Runtime Manager's Servers section, by following this KB article: How to retrieve HTTP archive files (HAR). MuleSoft Support can extract the API response from that HAR extension file.