Hello guys, I have a centos server , and i use wordpress on it. From the last 2 months my site crashed 6 times.... 1 Month before i was on fullroot.com, but after 4 crashes i shifted to atlantic.net cloud but then also after few days site becomes unresponsive(its like crashed again) but when i reboot server it again becomes live. In the beggining , ram usage is 250-300 mb , which increases to 510 mb in just 1 and a half day.I dont know if its crashing due to some wordpress or centos errors.(or someone is trying to crash my site) Please save me guys , i have lost all my rankings..
It looks like you are using VPS. I suggest you to shift to a good VPS provider with 512MB RAM (may be a XEN VPS) Get a managed VPS so that your VPS provide can provide you more details about crash. Use top command in SSH to know which process is eating memory.
If you are on a cloud platform you shouldn't face the problem. I would suggest you to monitor your MySql usage from control panel or if the service is managed contact your hosting provider for more information. you can monitor the Mysql usage of your server by installing MySQL GUI Tools which includes mysql administrator to monitor the resource or you can install myTop (I have wrote a tutorial on my blog) on your server.