Percona announced the general availability of PMM High Availability on October 27, 2026, adding a Kubernetes-based failover option to its open-source database monitoring platform. The feature is included in Percona Monitoring and Management, or PMM, version 3.10.0.

Key Takeaways

  • PMM HA runs three servers behind one address and is designed to switch leaders automatically after a failure.
  • The feature is free and open source, and its architecture has been validated on Amazon EKS and Red Hat OpenShift.

How PMM High Availability works

PMM HA is intended to address a vulnerability in single-server monitoring deployments: if the server fails, teams can lose visibility into database health and alerts can stop running.

The new deployment option runs three PMM servers behind one address. If the active server, pod or node fails, another leader takes over in seconds, Percona said. Browsers, PMM clients and Percona Operators continue to use the same address.

Clients queue metrics during failover and send them once connectivity resumes, helping preserve continuity in performance graphs. Percona said the setup also allows users to remain logged in.

Deployment and recovery options

PMM HA installs using two Helm charts, while Kubernetes operators manage the replicated data stores supporting the monitoring environment. Its architecture has been validated on Amazon Elastic Kubernetes Service and Red Hat OpenShift, including Red Hat OpenShift Service on AWS.

Helm-based upgrades replace replicas one at a time, allowing routine maintenance without taking the entire monitoring platform offline. Backup and restore orchestration supports S3-compatible storage or a shared volume, with restoration available in place or in another Kubernetes namespace.

The feature is designed for infrastructure teams, database administrators, site reliability engineers and platform engineers. It is free and open source, with no additional software licensing cost.

Other changes in version 3.10.0

The PMM 3.10.0 release also adds ARM64 support for PMM Server, expanding deployment options for organizations using ARM-based infrastructure.

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