The diagram illustrates a highly available, distributed database reference architecture for AlloyDB Omni managed by the RPM Orchestrator. It shows that the client applications connect to a robust load-balancing tier and the load balancer routes read-write traffic directly to the active primary database node, while read-only traffic is routed to the replica nodes. The load balancer uses a Virtual IP (VIP) and is highly available itself, with Keepalived (for VIP failover), PgBouncer (for PostgreSQL connection pooling), and Haproxy (for routing and load balancing). The AlloyDB Omni Primary instance database nodes achieve high availability by replicating data synchronously across multiple zones. To scale out read-heavy workloads without impacting the primary HA cluster, separate Read Pool instances are deployed. These receive Async Replication (asynchronous) from the active node and can be scaled out.
It shows how an independent control plane manages the entire configuration and health of the clusters. The administrator interacts with the RPM Orchestrator, to oversee the lifecycle of the databases. The control plane includes redundant Cluster Managers and a 3-node etcd based Distributed Configuration Store to reliably maintain cluster state, and manage configurations. The controllers directly interface with the Node Manager running on each individual database node. For deploying only a single cluster, you may run control and data plane components on the same set of nodes.
High Availability and Read Scalability
Maintaining uptime and scaling reads for demanding workloads is simpler with the RPM orchestrator. It provides a resilient architecture capable of automatically handling failures across the stack, including the ability to handle failure of all Data / Control Path components, Readable Standby, as well as mitigating any network disruptions between the nodes.
The orchestrator now supports read pools for scaling out your read workloads and gives you the ability to create or add read pools to a cluster dynamically to meet the needs of analytical queries or similar workloads. The system also configures dedicated read endpoints for both standby nodes and readpools.
We are continuously expanding the capabilities of the AlloyDB Omni RPM orchestrator. Stay tuned for upcoming features, including advanced enterprise-grade capabilities to further strengthen business continuity and cross-region resiliency.
Data Protection and Security
Data security and recovery are at the core of the RPM Orchestrator. In this release, we have integrated automated backup and restore capabilities that enable you to configure a backup schedule and manage fully automated backup to GCS or S3-compatible storage automatically. The orchestrator allows you to execute backups to S3 or GCS buckets, or locally. Additionally, point-in-time recovery and fully automated in-place PIT restore are natively supported.
The RPM orchestrator supports SELinux enforcement at or after bootstrap to satisfy strict enterprise compliance and security standards and ensure mandatory access control and strong process isolation.
Database Operations
We’ve reduced the operational overhead associated with managing database fleets:
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Zero-Hassle Low-Downtime Maintenance: Managing lifecycle updates and scaling operations is easier with the new, fully automated Low Downtime Maintenance (LDTM). Minor version upgrades as well as CPU and memory resource adjustments are executed with minimized downtime and automatic rollback support for maximum availability.
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Dynamic Configuration: Database administrators can dynamically tune settings without hassle, including the ability to Modify GUCs/configs at or after bootstrap. You can also provision a cluster for AI integrations.
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Simplified Cluster Maintenance: Managing your cluster footprint is straightforward, with native operational capabilities to add or remove database nodes as your workload demands shift.
Observability, AI, and Extensions
Monitoring and tuning your fleet requires deep visibility and the right set of tools:
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Advanced Logging: The orchestrator simplifies auditability and debugging by providing Data and Control Path log direction to log disk.
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Rich Observability: Custom metrics support allows you to fine-tune observability to suit your monitoring ecosystem. With custom metrics, you can track business-level events directly from the database, such as the number of new user registrations per minute, active sessions for a specific tenant, or the volume of orders processed, and export these to your company’s central observability platform.
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AI & Extensions: In addition to the list of extensions supported with AlloyDB Omni, the orchestrator includes support for all AlloyDB Omni’s AI features such as query using natural language, AI-powered searches, AI functions, etc.
Get Started Today
The AlloyDB Omni Red Hat RPM orchestrator offers a new way to manage PostgreSQL-compatible workloads on bare metal or VM platforms, combining the high performance of AlloyDB, access to generative AI features and Gemini models to build AI agents and applications, and full automation.
Ready to elevate your on-premises database operations? Dive into our AlloyDB documentation to get started with the GA release today. Sign-up today !!
You can also try our new codelab to deploy a highly available AlloyDB Omni cluster using the RPM Orchestrator.
Source Credit: https://cloud.google.com/blog/products/databases/alloydb-omni-rpm-orchestrator-is-generally-available/
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