My webhost is currently planning to upgrade all servers from MySQL 5.6 to 5.7 within the next two weeks. I have done a little digging and have not found any real clarification if CE22.214.171.124 runs on 5.7 or not. So I was wondering, can anyone clarify this or if there may be some action I'll need to take? Thanks!
As per Magento official system requirement documentation MySQL 5.6 is supported Magento 1x System Requirement
If we see the Magento 2 system requirement documentation there also MySQL 5.6 is mentioned.Magento 2x System Requirement
If you visit following link http://devdocs.magento.com/guides/v2.1/install-gde/prereq/mysql.html , there is e a section as following (Though it is for Magento 2)
Magento does not support MySQL 5.7 at this time.
These instructions are provided for your convenience if you'd like to test MySQL 5.7
I suggest you try 5.7 on stage environment to see if it breaks any code flow.
I would first question your hosting provider for forcing you to upgrade. I can already tell it isn't a Magento host.
I would recommend having them setup a staging server for you to test. Otherwise, essentially they are telling you "Hey, we are going to upgrade your systems. I hope nothing breaks for you".
Here are some release notes: https://dev.mysql.com/doc/refman/5.7/en/upgrading-from-previous-series.html
As I know, Magento CE 1.9 is compatible with MySQL 5.7 However, you should be careful in upgrading. You receive some warning notifications. It is not problem.