Objective
- Create project my-project
- Create Quota & Limit Ranges for project my-project
- Deploy Node JS Application using S2I
- Verify allocated Quota & Limits
Step 1: Set up OpenShift environment
Go to Katacoda.com & click on start scenario
Step 2: Create project my-project
oc new-project my-project
Step 3: Create quota
oc create quota project-quota --hard=pods=10
Step 4: Describe quota
oc describe quota project-quota
Step 5: Create limit ranges
vi limits.yaml
Add following limit range
apiVersion: v1
kind: LimitRange
metadata:
name: project-limits
spec:
limits:
-
type: Container
max: {cpu: '2'}
min: {cpu: 100m}
default: {cpu: 300m}
oc create -f limits.yaml
Step 6: Describe limit ranges
oc describe limits project-limits
Step 7: Describe node
oc describe node localhost | grep -A 4 Allocated
Step 8: Deploy nodejs application using s2i
oc new-app -i nodejs:8 https://github.com/sagar-jadhav/node-hello --name nodejs -l app=demo
Step 9: Describe quota
oc describe quota project-quota
Step 10: Describe limit
oc describe limits project-limits
Step 11: Scale up nodejs application
oc scale dc nodejs --replicas=9
Step 12: Describe quota
oc describe quota project-quota
Step 13: Describe limit
oc describe limits project-limits
Step 14: Scale up nodejs application
oc scale dc nodejs --replicas=15
Step 15: List pods
oc get pods
Step 16: List events
oc get events
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