signal18/replication-manager

Replication Manager for MariaDB, MySQL and PostgreSQL

Replication Manager is an open-source database monitoring, backup, and high-availability tool. It provides automated failover, scheduled maintenance, and full observability for MariaDB, MySQL, and Percona Server replication topologies, and, since 3.1.43, for PostgreSQL clusters.

Key features

MariaDB & MySQL Monitoring

• Real-time replication monitoring with support for GTID, multi-source, and delayed replication
• Topology detection across async, semi-sync, multi-master, mesh, wsrep, group replication, and relay topologies
• Performance schema digest analysis and workload tagging
• Processlist and long-running transaction monitoring
• NOC slideshow — full-screen auto-rotating display of all monitored clusters
• Multi-cluster management from a single instance

MariaDB & MySQL Backup and Recovery

• Scheduled logical and physical backups via mysqldump, mydumper, mariabackup, and xtrabackup
• Snapshot backups and point-in-time recovery via Restic
• S3-compatible object storage backend for backup repositories
• Backup retention policies with automatic purge

MariaDB & MySQL Maintenance

• Scheduled table optimization and analysis
• Automated log archiving and table defragmentation
• Rolling restart and reprovisioning
• Schema monitoring and checksum verification
• SLA tracking

MariaDB & MySQL Failover and Switchover

• Leader election and automatic primary election on failure detection (failover)
• Controlled replica-to-primary promotion (switchover)
• Replication best-practice enforcement
• Near-zero data loss targeting across most failure scenarios
• Automatic database rejoining and reseeding

PostgreSQL

• Clusters monitored like MariaDB and MySQL, with their own switchover, failover, and rejoin path
• Three topologies: active-passive, WAL streaming (primary and physical standbys), and logical replication (publisher and subscribers, DDL through pglogical)
• Switchover and failover with the routes moved on HAProxy and ProxySQL 3; rejoin of the former primary by pg_rewind
• Logical and physical backups via pg_dumpall and pg_basebackup, restore and reseed from them, WAL archive shipped to replication-manager
• Processlist, variables, table sizes, workload, WAL, and vacuum graphs from pg_stat_*; scheduled vacuumdb --analyze
• See PostgreSQL Topologies for what is available compared with MariaDB

Proxy Integration

• Automated backend management for ProxySQL, MaxScale, HAProxy, and Spider
• ProxySQL 3 PostgreSQL backends, with read/write split

Observability & Alerting

• Metrics history exposed via the Carbon/Graphite API
• Alerting via email, Pushover, Slack, Teams, and Mattermost
• Extensible log plugin system for security, compliance, and workload analysis
• Per-module log level configuration

Operations & Security

• Built-in database and proxy configurator with tag-based config tracking
• Credential rotation for replication and monitoring accounts, with HashiCorp Vault integration
• Encrypted secrets in configuration files, with support for multi-layer config inheritance
• OAuth2 SSO compatible with GitLab, GitHub, and any OIDC provider
• REST and gRPC APIs with role-based access control
• Integrated WebTTY terminal sessions

Provisioning

• Service deployment on OpenSVC and Kubernetes, including init container support

Documentation

License

replication-manager is released under the GPLv3 license. (complete license text)

It includes third-party libraries released under their own licenses. Please refer to the vendor directory for more information.

It also includes derivative work from the go-carbon library by Roman Lomonosov, released under the MIT licence and found under the graphite directory. The original library can be found here: https://github.com/lomik/go-carbon

Copyright and support

Replication Manager for MariaDB, MySQL and PostgreSQL is developed and supported by SIGNAL18 CLOUD SAS.