SRE/Data Persistence/Databases/Runbooks

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SRE Data Persistence technical documentation

Depooling a replica in case of host failure or replication lag
Steps to start or stop MariaDB.
Adding a racked host to configuration.
Steps that need to be taken when rebooting (or booting) a DB host.
Removing a host from configuration and preparing it for physical decommissioning.
Steps to switchover a MariaDB primary.
Upgrading a section to a new OS and MariaDB version.
Orchestrator is a service for managing mysql cluster replication.