Flip MySQL slaves to use the secondaries
Flip MySQL slaves to use the secondaries

Move the 'legacy alias', which is used by applications [1] [2] to
connect to MySQL, to the secondary slaves.

This is to allow me to reboot the primary slave.

[1]: https://github.gds/gds/alphagov-deployment/blob/443324d1dd03f9dee98ec610052fba2cfaccdb4a/contacts/to_upload/database.yml#L8
[2]: https://github.gds/gds/alphagov-deployment/blob/443324d1dd03f9dee98ec610052fba2cfaccdb4a/whitehall/to_upload/database.yml#L3

alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet,alphagov/govuk-puppet