What’s the Best PostgreSQL High Availability Framework? PAF vs. repmgr vs. Patroni Infographic
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ScaleGrid offers a fully managed PostgreSQL solution that automates high availability for on-premise and cloud deployments, allowing developers to focus on their products without vendor lock-in. It compares high availability frameworks like patroni, repmgr, and paf, outlining their features, benefits, and required interventions. ScaleGrid's platform also supports multiple databases and integrations, enabling efficient management at scale.
What’s the Best PostgreSQL High Availability Framework? PAF vs. repmgr vs. Patroni Infographic
- 1. Automate your PostgreSQL high availability at ScaleGrid PostgreSQL Solutions ScaleGrid’s fully managed PostgreSQL cloud solution and database manage- ment software for private on-premise deployments allows you to automate high availability at cluster creation. Easily deploy, monitor, provision, and scale PostgreSQL while keeping full supe- ruser and SSH access with no vendor lock-in, and install unlimited PostgreSQL extensions with no restrictions. About ScaleGrid ScaleGrid is a fully managed Database- as-a-Service (DBaaS) solution used by thousands of developers, startups, and enterprise customers including Polaris, UPS, and Adobe. ScaleGrid supports Mon- goDB, Redis, MySQL, and PostgreSQL on public and private clouds, including AWS, Azure, DigitalOcean, and VMware, and automates your time-consuming tasks at any scale so you can focus on product. Contact Us sales@scalegrid.io support@scalegrid.io Solutions PostgreSQL Cloud DBaaS Enterprise On-Premise Resources ScaleGrid Blog Documentation Supports REST APIs and HAproxy integration. Handles recovering the health of individual nodes. Provides notification by invoking the user scripts for the registered events. Automatic pg_rewind (dangerous to enable). Supports NAT-based configuration. Requires an extra port to be opened. Detects if a standby is misconfigured with an unknown or non-existent node in recovery configuration. Distributed solution which enables the management of any node from another node in the cluster. Complete high availability management solution for the resource, including start, stop, and monitor, and handle network isolation scenarios. Quorum behavior can be enforced. Handles node failures and trigger elections when the master goes down. Framework automates the initialization and configuration of PostgreSQL. Pros & Cons PAF repmgr Patroni ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ Pacemaker & Corosync UDP communication REST API for Patroni, 2 (min) ports for DCS. MANUAL INTERVENTION Network isolate the standby server from other servers Split Brain Scenario Network isolate the master server from other servers Network Isolation Tests Which PostgreSQL high availability management tool is best for your deployments? Compare PostgreSQL Automatic Failover (PAF), Replication Manager (repmgr), and Patroni high availability tests to discover the framework that offers the best performance. HIGH AVAILABILITY FRAMEWORK TEST SCENARIOS PostgreSQL ✘ Tests were performed while the app was running and inserting data to the PostgreSQL database. The app was written using PostgreSQL Java JDBC Driver leveraging the connection failover capability. Agent: patroni Multi-master Agent: repmgd No downtime Agent: pacemaker Downtime Stop the framework agent process Downtime Downtime Downtime DowntimeReboot the Server Stop the PostgreSQL Process and bring it back immediately after health check expiry Kill the PostgreSQL Process Primary Server Tests Stop the Framework Agent Process Reboot the Server Stop the PostgreSQL Process MANUAL INTERVENTION No downtime MANUAL INTERVENTION No downtime MANUAL INTERVENTION No downtime MANUAL INTERVENTION No downtime MANUAL INTERVENTION No downtime MANUAL INTERVENTION UNMANAGED STATE No downtime UNMANAGED STATE No downtime Kill the PostgreSQL Process No downtime Downtime No downtime No downtime No downtime No downtime No downtime No downtime No downtime No downtime No downtime No downtime No downtime Downtime Patronirepmgr (Replication Manager) PAF (PostgreSQL Automatic Failover) Patronirepmgr (Replication Manager) PAF (PostgreSQL Automatic Failover) Patronirepmgr (Replication Manager) PAF (PostgreSQL Automatic Failover) Standby Server Tests repmgr provides several commands to setup and monitor PostgreSQL replication. It is feature-rich and also eases the job of the database administrator (DBA). However, it’s not a full fledged high availability management tool since it will not manage the resources. Manual intervention is required to ensure the resource is in proper state. #3 REPMGR PostgreSQL Automatic Failover provides several advantages in handling PostgreSQL high availability. PAF uses IP address failover instead of rebooting the standby to connect to the new master during a failover event, proving advantageous in scenarios where a user does not want to restart the standby nodes. PAF also needs very little manual intervention and manages the overall health of all the resources. The only case where manual intervention is a requirement is in the event of a timeline divergence where the user can elect to use pg_rewind. #2 PAF Patroni is a valuable tool for PostgreSQL database administrators (DBAs), as it performs end-to-end setup and monitoring of a PostgreSQL cluster. The flexibility of choosing DCS and standby creation is an advantage to the end user, as they can choose the method they are comfortable with. REST APIs, HaProxy integration, Watchdog support, callbacks and its feature-rich management makes Patroni the best solution for PostgreSQL HA management. #1 PATRONI What’s the best high availability framework for PostgreSQL? Read the analysis of each PostgreSQL high availability framework test scenario READ THE FULL REPORT READ THE FULL REPORT