MariaDB GaleraCluster Services
Deploy production-grade MariaDB Galera Cluster with synchronous multi-master replication, automatic node provisioning, and certification-based conflict resolution for mission-critical workloads that demand zero data loss.
Comprehensive MariaDB Galera Cluster Services
From initial cluster deployment through performance tuning and disaster recovery, we deliver end-to-end Galera Cluster solutions for enterprise environments.
- Cluster initialization and bootstrap
- wsrep provider and Galera library configuration
- SSL/TLS encryption for IST and SST streams
- Network and firewall configuration (ports 4567, 4568, 4444)
- SST method selection (mariabackup, rsync, mysqldump)
- IST configuration with optimized gcache sizing
- Donor node selection and load-aware policies
- Rolling node addition without cluster downtime
- Certification-based replication tuning
- Write conflict detection and resolution strategies
- Application-level write partitioning guidance
- Deadlock retry logic and best practices
- Flow control tuning (gcs.fc_limit, gcs.fc_factor)
- Parallel apply threads (wsrep_slave_threads)
- gcache sizing for IST window optimization
- WAN replication tuning (evs.send_window, segment config)
- wsrep status variables monitoring and dashboards
- Flow control and replication lag alerting
- Cluster state change notifications
- Performance Monitoring with PMM or custom tooling
- Automated backup with mariabackup integration
- Cluster recovery from total outage (safe-to-bootstrap)
- Split-brain recovery and quorum restoration
- Point-in-time recovery with binary log coordination
Why Choose MariaDB Galera Cluster?
Galera Cluster delivers true multi-master synchronous replication with no single point of failure, making it the gold standard for MySQL-compatible high availability.
Synchronous Replication
Every transaction is certified and applied on all nodes before the commit is acknowledged. This guarantees RPO=0 with zero data loss — no replication lag, no stale reads, and no divergent data between nodes.
Multi-Master Writes
Every node in the cluster is a full read/write master. Applications can direct writes to any node, enabling geographic write distribution, load balancing, and eliminating single-writer bottlenecks.
Automatic Node Join (SST/IST)
New or recovering nodes automatically receive the cluster state through SST (full snapshot) or IST (incremental delta). No manual intervention is required — the cluster self-heals and re-provisions nodes transparently.
No Single Point of Failure
The shared-nothing architecture means every node holds a complete copy of the data. If any node fails, the remaining nodes continue serving reads and writes with no downtime and no data loss, as long as quorum is maintained.
Galera at a Glance
Supported Platforms
Galera Cluster Architecture
Understanding the four core components that make Galera Cluster the most reliable MySQL-compatible multi-master solution available.
The wsrep API is the interface layer between MariaDB and the Galera replication library. It captures transaction write-sets at commit time and passes them to the Galera plugin for replication. This clean abstraction allows Galera to work with any wsrep-compatible database engine without modifying the storage layer.
The Group Communication System (GCS) handles cluster membership, message ordering, and delivery guarantees. Built on the GComm protocol, it provides virtual synchrony — ensuring all nodes see the same sequence of messages in the same order, which is the foundation for consistent certification across the cluster.
Each node independently certifies incoming write-sets against its local pending transactions. Certification compares primary key ranges to detect conflicts deterministically — every node reaches the same certification decision without coordination. Conflicting transactions are rolled back on the originating node with a deadlock error.
State transfers provision new or recovering nodes. SST (State Snapshot Transfer) sends a full data snapshot via mariabackup, rsync, or mysqldump. IST (Incremental State Transfer) replays only the missing write-sets from the donor's gcache. IST is non-blocking and fast, making proper gcache sizing critical for operational resilience.
Galera Cluster vs. InnoDB Cluster
Both solutions deliver synchronous replication and high availability, but their architectures and operational characteristics serve different use cases.
Galera Cluster is purpose-built for multi-master workloads where every node must accept writes. Its certification-based approach and mature state transfer mechanisms make it ideal for organizations that need proven, battle-tested clustering with MariaDB.
InnoDB Cluster is Oracle's native MySQL clustering solution that bundles Group Replication with MySQL Shell (AdminAPI) and MySQL Router. It provides a tightly integrated stack with single-primary as the default mode and optional multi-primary.
Our Galera Cluster Implementation Process
A systematic, production-proven approach to deploying MariaDB Galera Cluster with comprehensive testing, validation, and documentation at every stage.
Architecture Planning
Analyze your workload patterns, latency requirements, and availability targets. Design the cluster topology — number of nodes, network segments, SST methods, and proxy layer selection (ProxySQL, HAProxy, or MaxScale).
Cluster Bootstrap
Initialize the first node with galera_new_cluster, configure wsrep provider options, set up SSL/TLS for replication streams, and join additional nodes. Validate certification and state transfer functionality before proceeding.
Integration & Testing
Configure the proxy layer for read/write splitting and health checks. Perform failover testing, SST/IST validation, network partition simulation, and application compatibility verification under realistic load.
Production Deployment
Deploy to production with comprehensive monitoring dashboards, alerting on wsrep status variables and flow control, automated backup schedules, and runbook documentation for operational procedures.
Frequently Asked Questions About MariaDB Galera Cluster
Common questions about Galera Cluster architecture, deployment, and operations.
Related MariaDB Services
Explore more ways our MariaDB experts can help optimize your database infrastructure
Need a different MariaDB service? Browse our complete offerings.