OK I am pretty sure i found and fixed my issue I had on Christmas day. I was running out on memory and MySql was shutting down. There is a very good how to https://www.digitalocean.com/community/articles/how-to-configure-virtual-memory-swap-file-on-a-vps on how to fix this in a few few mins. Seemed to happen when all my diffrent sites were being hit at once.