I want to achieve High Availability in Google cloud platform. I have 1 instance of MYSQL5.7 with following configuration:
Database version is MySQL 5.7
Auto storage increase is enabled
Automated backups are enabled
Point-in-time recovery is enabled
Located in us-central1-c
No database flags set
No labels set
Highly available (regional))
Now I am very confused because I follow this Link
https://cloud.google.com/sql/docs/mysql/configure-ha#ha-existing
and enable High Availability by simply selecting the High availability (regional) checkbox. But I am confused is it working or not according to this link in order to test this setup I have to go through the stackDriver I also did it but not getting any response. Also I want to know do we need 2 instance of sql in order to achive HA or do I need to create replica of instance please help.
If you already select "Enable high availability" you don't need to do anything else. As you can see in this document; when you enable it, Google automatically creates a secondary instance named "standby instance" in another zone, different from us-central1-c in order to create a failover cluster, the idea is that in case of a failure in the "Master instance" the secondary will be able to stand up as the main one with the same configuration as master instance due the synchronous replication.