A node is disconnected from the cluster in Aria Operations for Logs

Products

• VMware Aria Suite

Issue/Introduction

• In the 'Cluster' menu of Aria Operations for Logs, a node shows as disconnected.
  
  
  
• The nodetool shows the same node with a status as DN

  • nodetool-no-pass status

• In cassandra.log you may see entries similar to this;

  •  Rejected incoming TLS connection before negotiating from /<Other_node_IP>:51072 to /<This_node_IP>:7000. TLS is explicitly disabled by configuration.

Environment

Aria Operations for Logs 8.x

 

Cause

The latest internal config file version on the disconnected node does not match the latest version in the connected nodes.

Navigate to the directory below;

• /storage/core/loginsight/config

• •  

In that directory you will find the following file;

• loginsight-config.xmlxxx
  
  Where 'xxx' is a numerical value.

   

Resolution

• Copy the latest version of the internal config file from a connected node.

  This can be achieved in two ways;

  1. Use WinSCP or similar to copy the file across to the relevant node.
  2. Use the scp command below to copy directly to the node. This will require the root credentials for the relevant node.
     • Open an SSH session to a connected node. 

     • scp /storage/core/loginsight/config/loginsight-config.xmlxxx root@<Disconnected_node_IP>:/storage/core/loginsight/config

  3. After the new config is copied, restart the 'loginsight' service on the disconnected node;

     • service loginsight restart