Active Directory logins fail on specific nodes across a cluster

Products

• VMware Aria Suite

Issue/Introduction

When logging into Aria Operations for Logs using Active Directory you encounter login failure.  

Affected node ui_runtime.log include errors simliar to:

• *INFO] [com.vmware.loginsight.web.actions.settings.AuthConfigurationActionBean] [Failed validation of AD Domain]
• *WARN] [com.vmware.loginsight.###.##.ActiveDirectoryValidator] [Unable to validate Active Directory credentials. Please check your Active Directory DNS name, port, and SSL settings as well as your username and password.; UnknownHostException: <YOURDOMAIN.COM>]

Environment

Aria Operations for Logs 8.x

Cause

This is caused by failure of DNS resolution on the affected nodes.

Resolution

Validate that DNS is accessible and can be resolved by the affected nodes.

Compare working and failing nodes network configuration to ensure that DNS is configured the same using:

cat /etc/systemd/network/10-eth0.network

If needed, update this network file and execute the following to set the updated DNS:

systemctl restart systemd-networkd