support MySQL 2nd gen to set up HA

[ozashu]

#5286
Confirmed that MySQL(Cloud SQL) 2nd generation 5.7 is also able to set up for high availability. 

The documentation needs to be fixed as:Availability type - (Optional) This specifies whether a PostgreSQL instance should be set up for high availability (REGIONAL) or single zone (ZONAL). It can be also applied for MySQL 2nd Gen. For MySQL, it should be set up for high availability (REGIONAL)without creating Failover replica instance using terraform apply command.

[rileykarson]

LGTM- I'll upstream this so the fix gets applied to the google-beta docs as well.

[rileykarson]

Actually, I was unable to configure this in MySQL failing for the same reason as the linked issue. Can you share your repro?

[ozashu]

Here is terraform plan result .

      ~ settings {
            activation_policy           = "ALWAYS"
            authorized_gae_applications = []
          + availability_type           = "REGIONAL"

And here is terraform apply result.

Apply complete! Resources: 1 added, 1 changed, 0 destroyed.

It failed when I created failover replica instance.
I destroyed it and applied terraform setup MySQL HA.

[rileykarson]

That's a failure for me as well, through both Terraform and the console. Can you share the actual config you're using? It's possible I'm missing some required setting on my instance.

[ozashu]

@rileykarson
Here is terraform plan's result of Excerpt.

      ~ settings {
            activation_policy           = "ALWAYS"
            authorized_gae_applications = []
          ~ availability_type           = "ZONAL" -> "REGIONAL"
            crash_safe_replication      = false
            disk_autoresize             = true
            disk_size                   = 10
            disk_type                   = "PD_SSD"
            pricing_plan                = "PER_USE"
            replication_type            = "SYNCHRONOUS"
            tier                        = "db-n1-standard-2"
            user_labels                 = {}
            version                     = 16

            backup_configuration {
                binary_log_enabled = true
                enabled            = true
                start_time         = "18:00"
            }

Couldn't you create MySQL HA instances by GCP console?
MySQL HA needs "The Automate backups and Enable binary logging checkboxes enabled"
and "Selecting the High availability (regional) checkbox"

[aharelick]

As @ozashu mentioned it looks like there is an API restriction and in order to use a REGIONAL instance you have to enable backups and binary logs (which share a setting with point in time backups). That restriction should probably be added to both the CloudSQL API docs and these terraform docs.

terraform-google-modules/terraform-google-sql-db#71 (comment)

[ozashu]

#6254

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