Nagios Support Forum

Hello,
I set up a Nagios Log server, and it was functioning well initially, with logs coming in as expected. However, after a couple of days, I found myself unable to log in. I tried using both an AD user and the nagiosadmin account, but the application just loops for a while before displaying “the username specified does not exist.” In my first attempt to fix this, I inadvertently broke the entire server and had to rebuild it, as it was only a few days old.

Now, with the new server up and running smoothly, I'm facing the same login issue again today.

This setup is a VM running on Hyper-V, with CentOS 7 as the OS. I've also updated the resources to 8 cores and 12 GB of RAM.

I would appreciate any suggestions on how to resolve this issue.

The first question I have for you is which version of Nagios Log Server are you running?

As for simple checks, ensure that elasticsearch/opensearch is running. 2024R1 and earlier used Elasticsearch, 2024R2 uses OpenSearch. Use one of the following commands.
If they are, try running the reset_nagiosadmin_password.sh script in /usr/local/nagioslogserver/scripts