What is Galera Cluster MySQL?
William Cox Galera Cluster for MySQL is a true Multi-Master Cluster based on synchronous replication. It’s an easy-to-use, high-availability solution, which provides high system up-time, no data loss and scalability for future growth.
How MySQL Galera Cluster works?
Galera Cluster is a synchronous multi-master replication plug-in for InnoDB. An application can write to any node in a Galera cluster, and transaction commits (row-based replication events) are then applied on all servers, via a certification-based replication.
Is Galera Cluster free?
Galera Cluster software is free to download and use, along with MySQL and MariaDB software for the database component of a cluster.
How does MariaDB Galera Cluster work?
MariaDB Galera Cluster implements a multi-primary replication solution. When you write to a table on a node, the node collects the write into a write-set transaction, which it then replicates to the other nodes in the cluster. If the transaction has no conflicts, the nodes apply it.
How do I setup a Galera cluster?
Setup MariaDB Galera Cluster on Ubuntu 18.04
- Step 1: Install MariaDB database server on Galera nodes.
- Step 2: Configure First Galera Cluster node.
- Step 3: Configure other Galera Cluster Nodes.
- Step 4: Start Galera Cluster on Ubuntu 18.04.
- Step 5: Test Galera Cluster Operation.
- Step 6: Install and Configure HAProxy.
How do I set up a Galera cluster?
- Step 1 — Adding the MariaDB Repositories to All Servers.
- Step 2 — Installing MariaDB on All Servers.
- Step 3 — Configuring the First Node.
- Step 4 — Configuring the Remaining Nodes.
- Step 5 — Opening the Firewall on Every Server.
- Step 6 — Creating a SELinux Policy.
- Step 7 — Starting the Cluster.
- Step 8 — Testing Replication.
What is bootstrap in MySQL?
You bootstrap MySQL Router against an InnoDB ReplicaSet or InnoDB Cluster to automatically configure routing. The bootstrap process is a specific way of running MySQL Router, which does not start the usual routing and instead configures the mysqlrouter. conf file based on the metadata.
