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Fredrik Østrem
9ddee8f302
The current password generation algorithm is extremely deterministic, due to being based on the standard random number generator with a deterministic seed based on the current Unix timestamp (in seconds). This can lead to a number of security issues, including: The same passwords being used in different Kubernetes clusters if the operator is deployed in parallel. (This issue was discovered because of four deployments having the same generated passwords due to automatically being deployed in parallel.) The passwords being easily guessable based on the time the operator pod started when the database was created. (This would typically be present in logs, metrics, etc., that may typically be accessible to more people than should have database access.) Fix this issue by replacing the current randomness source with crypto/rand, which should produce cryptographically secure random data that is virtually unguessable. This will avoid both of the above problems as each deployment will be guaranteed to have unique, indeterministic passwords.
Postgres Operator
The Postgres Operator enables highly-available PostgreSQL clusters on Kubernetes (K8s) powered by Patroni. It is configured only through manifests to ease integration into automated CI/CD pipelines with no access to Kubernetes directly.
Operator features
- Rolling updates on Postgres cluster changes
- Volume resize without Pod restarts
- Cloning Postgres clusters
- Logical Backups to S3 Bucket
- Standby cluster from S3 WAL archive
- Configurable for non-cloud environments
- UI to create and edit Postgres cluster manifests
PostgreSQL features
- Supports PostgreSQL 9.6+
- Streaming replication cluster via Patroni
- Point-In-Time-Recovery with pg_basebackup / WAL-E via Spilo
- Preload libraries: bg_mon, pg_stat_statements, pgextwlist, pg_auth_mon
- Incl. popular Postgres extensions such as decoderbufs, hypopg, pg_cron, pg_partman, pg_stat_kcache, pgq, plpgsql_check, postgis, set_user and timescaledb
The Postgres Operator has been developed at Zalando and is being used in production for over two years.
Getting started
For a quick first impression follow the instructions of this tutorial.
Documentation
There is a browser-friendly version of this documentation at postgres-operator.readthedocs.io
- How it works
- Installation
- The Postgres experience on K8s
- The Postgres Operator UI
- DBA options - from RBAC to backup
- Build, debug and extend the operator
- Configuration options
- Postgres manifest reference
- Command-line options and environment variables
Google Summer of Code
The Postgres Operator made it to the Google Summer of Code 2019! Check our ideas and start discussions in the issue tracker.
Community
There are two places to get in touch with the community:
- The GitHub issue tracker
- The #postgres-operator slack channel