https://github.com/gautric/k8s-ocp-tips

https://github.com/gautric/k8s-ocp-tips

k8s kubernetes ocp openshift tips

Last synced: 10 days ago
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• Host: GitHub
• URL: https://github.com/gautric/k8s-ocp-tips
• Owner: gautric
• Created: 2021-06-23T12:49:27.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2022-09-09T14:12:07.000Z (about 2 years ago)
• Last Synced: 2024-10-20T08:59:02.947Z (18 days ago)
• Topics: k8s, kubernetes, ocp, openshift, tips
• Homepage:
• Size: 22.5 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.adoc

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README

        
# Kubernetes & Openshift Tips (K8S OCP)

## Openshift Registry URL

#### Open the route footnote:nca[need clusteradmin role]

  oc patch configs.imageregistry.operator.openshift.io/cluster --patch '{"spec":{"defaultRoute":true}}' --type=merge

#### Retrieve the route

  oc get route default-route -n openshift-image-registry --template='{{.spec.host }}'

  REGISTRY_ROUTE=$(oc get route default-route -n openshift-image-registry --template='{{.spec.host }}')

#### Login with docker/podman CLI

  podman login -u $(oc whoami) -p $(oc whoami -t) --tls-verify=false ${REGISTRY_ROUTE}

  docker login -u $(oc whoami) -p $(oc whoami -t) ${REGISTRY_ROUTE}

  

#### Tag Image locally

  

  docker tag ${IMAGE_NAME}:latest ${IMAGE_NAME}:${IMAGE_VERSION}

  docker tag ${IMAGE_NAME}:${IMAGE_VERSION} ${REGISTRY_ROUTE}/${NAMESPACE}/${IMAGE_NAME}:${IMAGE_VERSION}

#### Push to Openshift Registry

  docker push ${REGISTRY_ROUTE}/${NAMESPACE}/${IMAGE_NAME}:${IMAGE_VERSION}

### ServiceAccount role

#### Add admin Role to SA

  oc adm policy add-role-to-user admin system:serviceaccount:${NAMESPACE}:default  -n ${NAMESPACE}

### OpenShift

#### Check Openshift version

  kubectl get clusterversion version -o yaml

  

#### Retrieve YAML from OC client command 

 	 --dry-run=client -o yaml

### Operator

#### List all Operator available

  kubectl get packagemanifests -n openshift-marketplace

  

#### Describe Operator

  kubectl describe packagemanifests ${OPT_NAME}  -n openshift-marketplace

    

### Logs    

    

  oc logs -f ${POD}

### Build

	oc start-build ${BUILD_CONFIG}  --follow

	

### Secret  

  

	oc get secret/${SECRET} -o json | jq '.data["tls.crt"]' -r | base64 -d

### Delete

	oc delete all,configmap,pvc,serviceaccount,rolebinding,dc,bc --selector app=${APP}

	

	

### Deployment

#### Get the deployment name

	kubectl get deployment

#### Restart the deployment

	kubectl rollout restart deployment 

	

### Helm

#### Create Helm Chart

	

	helm create 

	

#### Create Helm Chart

	

	helm install  . --namespace  

#### Debug Helm Chart

	

	helm install  . --namespace  --dry-run --debug

#### Delete Helm Chart

	

	helm delete  --namespace