# Node Maintenance for MariaDB ColumnStore

- [Adding a Node](https://mariadb.com/docs/analytics/mariadb-columnstore/management/node-maintenance-for-mariadb-enterprise-columnstore/add-a-node.md): Adding a Node to MariaDB ColumnStore
- [Rejoining a Node](https://mariadb.com/docs/analytics/mariadb-columnstore/management/node-maintenance-for-mariadb-enterprise-columnstore/rejoin-a-node.md): Rejoin a node to a MariaDB ColumnStore cluster through MaxScale's REST API, calling the mariadbmon module's rejoin command via MaxCtrl or another REST client.
- [Removing a Node](https://mariadb.com/docs/analytics/mariadb-columnstore/management/node-maintenance-for-mariadb-enterprise-columnstore/remove-a-node.md): Remove a node from a MariaDB ColumnStore cluster by unlinking the server object from the MaxScale service using maxctrl or another REST client.
- [Setting a Node to Maintenance Mode](https://mariadb.com/docs/analytics/mariadb-columnstore/management/node-maintenance-for-mariadb-enterprise-columnstore/set-a-node-to-maintenance-mode.md): Set a MariaDB ColumnStore node to maintenance mode in MaxScale using the maxctrl set server command, taking the node out of read-write rotation.
- [Switchover of the Primary Node](https://mariadb.com/docs/analytics/mariadb-columnstore/management/node-maintenance-for-mariadb-enterprise-columnstore/switchover-primary-node.md): Switch the primary node in a MariaDB ColumnStore cluster by calling the mariadbmon switchover command in MaxScale via maxctrl or another REST client.
- [View and Clear Table Locks](https://mariadb.com/docs/analytics/mariadb-columnstore/management/node-maintenance-for-mariadb-enterprise-columnstore/view-clear-table-locks.md): View and clear lingering table locks in MariaDB ColumnStore using viewtablelock and cleartablelock, useful when a failed DDL or bulk load leaves a table locked.


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