[K8S] Replica Set vs Replication Controller 차이

ReplicaSet 은 Replicatation Controller 의 새로운 버전이다.

 

다른것은 다 동일한데 아래와 같은 차이점이 존재 한다.

 

ReplcaSet : Set-based Selectors

Replicatation Controller : Equality-based Selectors

 

	Equality-based	Set-based
support	Service, Replication Controller	Job, Deployment, ReplicaSet, Daemon Set
Operation	=, ==, !=	in, notin, exists
Example	enviroment=prd	enviroment in (prd)
Command Line	kubectl get pods -l enviroment=prd	kubectl get pods -l 'enviroment in (prd)'
Manifest	selector:    enviroment: prd	selector:  matchExpressions:     - {key: enviroment, operation: In, values: [prd]}

 

추가적으로 sectors 에 matchLabels 가 존재할 경우 아래와 같은 차이점이 있다.

Manifest	selector:   app: nginx	selector:    matchLabels:       app: nginx
support	Services, Replication Controller	ReplicaSets, Deployments, Jobs, DaemonSet|

 

참고자료

https://www.youtube.com/watch?v=Y5ADo_tjfIs&list=PLMPZQTftRCS8Pp4wiiUruly5ODScvAwcQ&index=19