Wordpress site error 504 and out of memory error and 100% cpu spike
Ive recently migrated my wordpress site to a new ubuntu 20.04 droplet. Im using nginx + mysql and using cloudflare as a cdn. I keep getting 504 errors from cloudflare and when i log in to the console there is a string of out of memory errors for mysql. The Digital ocean dashboard shows 100% cpu usage but after waiting for a few minutes or rebooting the server the issue stops. Is there a way for me to check what is using up all the memory / cpu ? This seems to happen mainly when i login and change something in wp-admin like updating a post, page or a product but that’s not always the case.
Any help would be greatly appreciated.
My site is www.themusicvault.co.uk
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