PostgreSQL (or Postgres) is an open-source relational database management system, which has become popular in recent years. As an RDBMS, PostgreSQL is an excellent choice of database for applications that required structured data storage, retrieval, and complex query support.
In the cloud-native applications and container orchestration, deploying PostgreSQL on a Kubernetes environment is a choice for modern data management.
The following are the main features of running PostgreSQL on a Kubernetes environment:
- Scalability: Kubernetes ensures the PostgreSQL instances seamlessly scale to handle the traffic.
- High Availability: There are integrated mechanisms to ensure high availability which includes automatic failover and load balancing, which ensures that the PostgreSQL database remains accessible even when there is a hardware or software failure.
- Isolation and Resource Allocation: Kubernetes provides the option to run multiple PostgreSQL instances in a shared cluster by isolating them by namespaces and resource quotas thus enabling efficient resource isolation and allocation.
- Stateful Sets for PostgreSQL: Stateful Sets are recommended Kubernetes resources for PostgreSQL, which ensures ordering and uniqueness of pods.
- Data Persistence and Storage: There are various storage options that are provided by Kubernetes which allows dynamic provisioning and management of persistent volumes for PostgreSQL.