search logs for specific string

[fsodah]

Is it possible to run tail -f on a remote linux to search for specific error string and reported back to nagios, such as if search my logs for the last 24hours to look for specific errors or warning in mysql, Oracle, Apache... etc.

[mbellerue]

For this it might be good to see if there are existing plugins that suit your needs. This one looks pretty promising, as it looks like you can specify a log file, a message, and a date/time range that you are interested in.
https://exchange.nagios.org/directory/P ... gs/details

Alternately, Nagios Log Server has the ability to receive the logs from various systems, and you can create alerts based on those logs.
https://www.nagios.com/products/nagios-log-server/

[fsodah]

>>Alternately, Nagios Log Server has the ability to receive the logs from various systems, and you can create alerts based on those logs.
>>https://www.nagios.com/products/nagios-log-server/

I will buy this one next year....


>>>if there are existing plugins that suit your needs
I am still not able to figure out how i can use these plugins... need step by step implementation

[mbellerue]

Here is a guide on installing plugins in Nagios XI.
https://assets.nagios.com/downloads/nag ... ios-XI.pdf

This should have everything you need to go from downloading the plugin to having a fully functional service check.

[fsodah]

Fair ... I will review it and get back to you

[mbellerue]

Okay, we will leave this thread open and wait to hear back.