Kubernetes StatefulSet Initialization with Unique Configs per Pod

Kubernetes StatefulSet Initialization with Unique Configs per Pod

Kubernetes StatefulSet Initialization with Unique Configs per Pod. StatefulSets in Kubernetes are used to manage stateful application that require one or more of the following: Stable, unique network identifiers. Stable, persistent storage. How to mount a unique configuration per pod for a stateful application.

How to mount a unique configuration per pod for a stateful application (e.g. how to mount separate configurations for master and slave database pods)

StatefulSets in Kubernetes are used to manage stateful application that require one or more of the following:

  • Stable, unique network identifiers
  • Stable, persistent storage
  • Ordered, graceful deployment and scaling
  • Ordered, automated rolling updates

In practice, StatefulSets are most commonly used to deploy databases (e.g. MySQL, PostgreSQL, Redis, Elasticsearch) onto Kubernetes. The declarative nature of Kubernetes makes it easy to run replicated stateful applications. For example, if you need to run multiple read-only replicas for a database, StatefulSets can be used to mount the same configurations per replica.

software-engineering kubernetes devops programming

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