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Day 08 - K8s High Availability

Day 08 - K8s High Availability

Today’s learning was all about ensuring high availability and self-healing in Kubernetes applications.

1) Replication Controller (RC):
Ensures the desired number of Pods are always running.
Automatically replaces crashed Pods.
A legacy concept — now mostly replaced by ReplicaSets.

2) ReplicaSet (RS):
The modern version of Replication Controller.
Uses label selectors to identify and manage Pods.
Maintains the desired number of Pods across nodes for high availability.

3) Deployment:
A higher-level abstraction that manages ReplicaSets.
Enables rolling updates, rollbacks, and version control for Pods.
Simplifies scaling and ensures zero-downtime updates.

Flow:
Deployment -> ReplicaSet -> Pod -> Container

Read More: https://lnkd.in/d9YkNzCb


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