98 lines
4.7 KiB
Markdown
98 lines
4.7 KiB
Markdown
# Postgres Operator
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[](https://coveralls.io/github/zalando/postgres-operator?branch=master)
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<img src="docs/diagrams/logo.png" width="200">
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The Postgres Operator delivers an easy to run highly-available [PostgreSQL](https://www.postgresql.org/)
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clusters on Kubernetes (K8s) powered by [Patroni](https://github.com/zalando/patroni).
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It is configured only through Postgres manifests (CRDs) to ease integration into automated CI/CD
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pipelines with no access to Kubernetes API directly, promoting infrastructure as code vs manual operations.
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### Operator features
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* Rolling updates on Postgres cluster changes, incl. quick minor version updates
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* Live volume resize without pod restarts (AWS EBS, PVC)
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* Database connection pooling with PGBouncer
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* Support fast in place major version upgrade to PG13. Supports global upgrade of all clusters.
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* Restore and cloning Postgres clusters (incl. major version upgrade)
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* Additionally logical backups to S3 bucket can be configured
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* Standby cluster from S3 WAL archive
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* Configurable for non-cloud environments
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* Basic credential and user management on K8s, eases application deployments
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* Support for custom TLS certificates
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* UI to create and edit Postgres cluster manifests
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* Works well on Amazon AWS, Google Cloud, OpenShift and locally on Kind
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* Support for AWS EBS gp2 to gp3 migration, supporting iops and throughput configuration
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### PostgreSQL features
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* Supports PostgreSQL 14, starting from 9.6+
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* Streaming replication cluster via Patroni
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* Point-In-Time-Recovery with
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[pg_basebackup](https://www.postgresql.org/docs/11/app-pgbasebackup.html) /
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[WAL-E](https://github.com/wal-e/wal-e) via [Spilo](https://github.com/zalando/spilo)
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* Preload libraries: [bg_mon](https://github.com/CyberDem0n/bg_mon),
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[pg_stat_statements](https://www.postgresql.org/docs/14/pgstatstatements.html),
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[pgextwlist](https://github.com/dimitri/pgextwlist),
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[pg_auth_mon](https://github.com/RafiaSabih/pg_auth_mon)
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* Incl. popular Postgres extensions such as
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[decoderbufs](https://github.com/debezium/postgres-decoderbufs),
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[hypopg](https://github.com/HypoPG/hypopg),
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[pg_cron](https://github.com/citusdata/pg_cron),
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[pg_partman](https://github.com/pgpartman/pg_partman),
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[pg_stat_kcache](https://github.com/powa-team/pg_stat_kcache),
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[pgq](https://github.com/pgq/pgq),
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[plpgsql_check](https://github.com/okbob/plpgsql_check),
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[postgis](https://postgis.net/),
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[set_user](https://github.com/pgaudit/set_user) and
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[timescaledb](https://github.com/timescale/timescaledb)
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The Postgres Operator has been developed at Zalando and is being used in
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production for over three years.
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## Using Spilo 12 images or lower
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If you are already using the Postgres operator in older version with a Spilo 12 Docker image you need to be aware of the changes for the backup path.
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We introduce the major version into the backup path to smoothen the [major version upgrade](docs/administrator.md#minor-and-major-version-upgrade) that is now supported.
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The new operator configuration can set a compatibility flag *enable_spilo_wal_path_compat* to make Spilo look for wal segments in the current path but also old format paths.
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This comes at potential performance costs and should be disabled after a few days.
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The newest Spilo image is: `registry.opensource.zalan.do/acid/spilo-14:2.1-p3`
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The last Spilo 12 image is: `registry.opensource.zalan.do/acid/spilo-12:1.6-p5`
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## Getting started
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For a quick first impression follow the instructions of this
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[tutorial](docs/quickstart.md).
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## Supported setups of Postgres and Applications
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## Documentation
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There is a browser-friendly version of this documentation at
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[postgres-operator.readthedocs.io](https://postgres-operator.readthedocs.io)
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* [How it works](docs/index.md)
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* [Installation](docs/quickstart.md#deployment-options)
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* [The Postgres experience on K8s](docs/user.md)
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* [The Postgres Operator UI](docs/operator-ui.md)
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* [DBA options - from RBAC to backup](docs/administrator.md)
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* [Build, debug and extend the operator](docs/developer.md)
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* [Configuration options](docs/reference/operator_parameters.md)
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* [Postgres manifest reference](docs/reference/cluster_manifest.md)
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* [Command-line options and environment variables](docs/reference/command_line_and_environment.md)
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## Community
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There are two places to get in touch with the community:
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1. The [GitHub issue tracker](https://github.com/zalando/postgres-operator/issues)
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2. The **#postgres-operator** [slack channel](https://postgres-slack.herokuapp.com)
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