ReplicaSets
ReplicaSets deploy and maintain a defined number of Pods, all generated from a common template and a count. They're generally not created directly, instead created as part of a Deployment.
Definition
ReplicaSets comprise:
From ReplicationControllers
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ReplicationControllers comprise:
- A selector, which matches Pods.
- A count of
replicasdefining the desired number of Pods. - A Pod
template, used for creation of new Pods.
For example:
apiVersion: apps/v1
kind: ReplicaSet
metadata:
name: my-app
spec:
replicas: 12
selector:
matchLabels:
app: my-app
template:
metadata:
labels:
app: my-app
spec:
containers:
- name: nginx
image: nginx
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