Working with default server logs
When you are using a VPS or a Dedicated Server, it’s important to know where to look if an error arises. Each of the dedicated hosting services offered by ResellersPanel comes with a set of system logs, which will record most errors on a given website or with the server. Always make sure to check these logs if you don’t know what could have caused an error. System errors/actions: Location: /var/log/messages Description: General system output is placed here (named information, daemons information, etc) cPanel error logs: Location : /usr/local/cpanel/logs/error_log Description : cPanel logs any error it incurs here. This should be checked when you encounter errors or strange behavior in cPanel/WHM General Error and Auditing Logs: Location : /usr/local/apache/logs/error_log Description : All exceptions caught by httpd along with standard error output from CGI applications are logged here. It is the first place you should look when httpd crashes or you encounter errors when accessing the website. Message Reception and Delivery: Location : /var/log/exim_mainlog Description : Receives an entry every time a message is received or delivered. Unexpected or Fatal Errors: Location : /var/log/exim_paniclog Description : Logs any entries that Exim (your mail server application) does not know how to handle. Authentication attempts: Location : /var/log/secure Description : Logs all daemons which require PAM Authentication Those logs are best investigated with a combination of the following commands: tail | cat | grep | more | less | head | awk | wc Originally published Monday, March 8th, 2010 at 2:24 pm, updated March 8, 2010 and is filed under Dedicated Hosting Services.
Tags: dedicated servers, VPS, error log
March 15th, 2010 at 10:17 am
[…] You can set up a script that will regularly log your server’s memory usage. And if there is a problem you can check the logs to see what was running. This additional log can be used in combination with the defaul tserver logs. […]