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Last time i experienced problems with Zenoss. Zenoss suddenly stopped getting information from the clients, stopped graphing client data and i did not know what the reason was for this situation. I tried removing and readding the client but the job of adding a new client was even not processed. When i tried to re-model […]
Recently i was migrating an Apache HTTP Server (httpd) server from one linux machine to another. The problem was, that on the source linux machine Apache HTTP Server (httpd) was a custom compiled 2.4.4 and we were having constant problems when patching the linux machine (openssl libraries etc.). So we decided to replace the custom compiled Apache HTTP Server (httpd) with […]
A while ago i noticed that /var partition on a certain server was almost filled up to a 100% up and started researching what caused this. I noticed that log files in /var/log directory were not rotating. I decided to run the log rotation manually when i got this error “error: bad top line in […]
Are you getting “Pnp4Nagios XML file not found Error”? Read this post and fix this error. Learn how to get Pnp4Nagios performance data graphs working.
This is how you fix Nagios Error: Could not open command file ‘/usr/local/nagios/var/rw/nagios.cmd’ for update on CentOS and Ubuntu Linux.
Got “NRPE: Unable to read output” error in Nagios and do not know what exactly it means and how to fix it? Read this post and learn how to fix it!
Got “This account is currently not available” error when trying to login via SSH? Read here what it means and how to quickly fix it!
Getting “CRITICAL – Socket timeout after 10 seconds” error in Nagios? Read this post and learn what this error indicates and how to fix it!
This is a How To guide on how to fix “CHECK_NRPE: Error – Could not complete SSL handshake” error in Nagios. Read this post on how to fix this issue and how to make sure it is fixed!
Lately i was migrating my Nagios monitoring server to a new hardware and also a new CentOS version (CentOS 5.9 -> CentOS 6.4). It was a completely new server with new Linux OS installed and everything was configured perfectly. When i migrated Nagios data to a newly installed server and switched the IP addresses, i started […]
