Design MariaDB for High Availability, Regional Resilience and Disaster Recovery
Deploy a MariaDB architecture designed around your workload, availability requirements and regional strategy. From a simple primary-replica deployment to a Galera cluster or cross-region disaster-recovery architecture, AccuWeb.Cloud can help design and deploy the appropriate topology.
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Pricing comparison based on equivalent configurations as of 1 August 2026.
Do you need basic replication or quorum-based HA?
Will most writes go through one primary, or does the application require multi-primary capability?
Is the workload staying in one region or does it require a remote DR region?
How much data loss and recovery time can the application tolerate?
The answers determine the topology — not a predefined package.
Suitable for: simpler production workloads · read replicas · backup/recovery strategy · workloads that do not require Galera quorum
Replication can be asynchronous or configured differently according to the design.
Without an additional HA/orchestration layer, database promotion should not be presented as guaranteed automatic failover.
A three-node Galera cluster provides quorum-based high availability with virtually synchronous replication between cluster members.
Three full MariaDB nodes · odd number of voting nodes preferred · multi-primary capability · quorum-based cluster operation · low-latency networking strongly preferred.
This is not three independent primary databases — they operate as one coordinated cluster.
MariaDB MaxScale can provide application-facing database routing and help separate application connection logic from the database nodes. For an HA routing design, multiple routing nodes can be considered according to the architecture.
MaxScale is not itself a database node or a Galera voter.
Region A — 3-Node Galera Cluster
↓ Asynchronous Cross-Region Replication ↓
Region B — Replica or Secondary Galera Cluster
For geographically distant locations, a local Galera cluster combined with asynchronous replication to another region can provide a better balance between local database performance and disaster recovery.
Remote promotion/failover depends on the selected architecture and should be treated as an administratively controlled recovery process unless a specific automated design has been implemented and validated.
Possible when network conditions permit.
Advantages
Considerations
Often the better choice for distant regions.
Advantages
For geographically distant regions, we normally evaluate a local HA cluster plus asynchronous remote DR before recommending a stretched Galera design.
Low-latency local networking supports Galera quorum communication.
— routed connectivity, not shared network —
Regions are independent networks connected by a separately designed routed link.
Cross-region database deployments require separately designed routed private connectivity between regions. Regions do not share one private network by default.
Multiple Database Nodes
Several MariaDB nodes participate in the same Galera cluster.
Replication Between Members
Transactions are coordinated across the cluster using Galera replication.
Quorum Protects the Cluster
A majority of cluster members is required for normal cluster operation.
Applications Connect via Routing
The application can be directed toward suitable database nodes according to the architecture.
Galera provides the database clustering capability. The complete HA design can also include routing, application retry behavior, monitoring, backups and disaster-recovery procedures.
Keeps data synchronized between database nodes.
Reduces interruption when an individual database node becomes unavailable.
Provides a recovery strategy for larger failures such as a regional outage, major corruption or operational incident.
A database cluster should still have an independent backup and recovery strategy. Galera replication does not replace backups.
MariaDB cluster pricing depends on the infrastructure actually provisioned, including database instances, routing/proxy instances where required, storage, public/private networking requirements, backup capacity and number of regions.
Pay based on the resources you provision, with flexible hourly billing and no long-term contracts.
You can view regular Compute pricing as a reference, but a complete cluster consists of multiple infrastructure components, not a single instance price.
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