63 lines
1.1 KiB
Markdown
63 lines
1.1 KiB
Markdown
## ReplicaSet 01 - Solution
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1. Create a ReplicaSet with 2 replicas. The app can be anything.
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```
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cat >> rs.yaml <<EOL
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apiVersion: apps/v1
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kind: ReplicaSet
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metadata:
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name: web
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labels:
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app: somewebapp
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type: web
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spec:
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replicas: 2
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selector:
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matchLabels:
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type: web
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template:
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metadata:
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labels:
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type: web
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spec:
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containers:
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- name: httpd
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image: registry.redhat.io/rhscl/httpd-24-rhel7
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EOL
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kubectl apply -f rs.yaml
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```
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2. Verify a ReplicaSet was created and there are 2 replicas
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```
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kubectl get rs
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# OR a more specific way: kubectl get -f rs.yaml
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```
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3. Delete one of the Pods the ReplicaSet has created
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```
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kubectl delete po <POD_NAME>
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```
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4. If you'll list all the Pods now, what will you see?
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```
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The same number of Pods. Since we defined 2 replicas, the ReplicaSet will make sure to create another Pod that will replace the one you've deleted.
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```
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5. Remove the ReplicaSet you've created
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```
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kubectl delete -f rs.yaml
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```
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6. Verify you've deleted the ReplicaSet
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```
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kubectl get rs
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# OR a more specific way: kubectl get -f rs.yaml
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```
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