Database Master Switchover

• Switch site to read-only
• Stop chef on all database servers
• Disable osmdbt replication on planet server with osmdbt-disable-replication -c /etc/replication/osmdbt-config.yaml
• Stop postgres on old master
• Switch old and new master roles in chef
• Run chef on new master
  • Check postgres is up and running as master on new master
• Run chef on old master
  • Check postgres is up and in sync on old master
• Run chef on other database servers
  • Check postgres is up and in sync on other database servers
• Enable osmdbt replication on planet server with osmdbt-enable-replication -c /etc/replication/osmdbt-config.yaml
• Switch site back to online mode