DEMO BLOG PAGE

Kubernetes Objects

@echo off setlocal enableextensions FOR /F "tokens=* USEBACKQ" %%g IN (`aws ssm get-parameters --names "/provisioning/core/vpc/default/subnet/compute/connected/SubnetIds" --query "Parameters[*].{Value:Value}" --output=text`) DO (SET PARAM_STORE_VALUE=%%g) ECHO %PARAM_STORE_VALUE% set PARAM_STORE_VALUE=%PARAM_STORE_VALUE:,=\",\"% ECHO "\"%PARAM_STORE_VALUE%\"" aws ssm put-parameter --name "/provisioning/core/vpc/default/subnet/compute/connected/SubnetIds/Sagemaker" --value "\"%PARAM_STORE_VALUE%\"" --type StringList --tier Standard --data-type text --description "This is for testing purpose"

Kubernetes Objects

Create Pod	kubectl run nginx --generator=run-pod/v1 --image=nginx
Create in particular namespace	kubectl run nginx --generator=run-pod/v1 --image=nginx -n NAMEPSPACE
Dry run,print object without creating it	kubectl run POD_NAME --generator=run-pod/v1 --image=nginx --dry-run -o yaml
Create and write its spec to file	kubectl run POD_NAME --image=nginx --restart=Never --dry-run -o yaml > pod.yaml
Create from File	kubectl create -f pod.yaml
Create from File in particular namespace	kubectl create -f pod.yaml -n NAMEPSPACE

List Pods	kubectl get po or kubectl get pod or kubectl get pods
List pods in all namespaces	kubectl get pods --all-namespaces or kubectl get pods -A
List/Get Particular Pod	kubectl get po #POD_NAME# or kubectl get pod #POD_NAME# or kubectl get pods #POD_NAME#
List pods with more information	kubectl get pods -owide
List pod in Json output format	kubectl get pods -o json
List pod in YAML output format	kubectl get pods -o yaml
List pods with more information in custom columns	kubectl get pod POD_NAME -o custom columns=CONTAINER:.spec.containers[0].name,IMAGE:.spec.containers[0].image

Delete Pods	kubectl delete pod #POD_NAME# or kubectl delete -f pod.yaml or kubectl delete pod/#POD_NAME#
Delete pod in particular namespace	kubectl delete pod #POD_NAME# -n #NAMEPSPACE_NAME#
Delete pod forcefully	kubectl delete pod #POD_NAME# --grace-period=0 --force

Check Pod Logs	kubectl logs #POD_NAME#
Check Pod Logs (multi-container case)	kubectl logs #POD_NAME# -c #CONTAINER_NAME#
Tail Pod Logs	kubectl logs -f #POD_NAME#
Tail Pod Logs (multi-container case)	kubectl logs -f #POD_NAME# -c #CONTAINER_NAME#

Verbose Debug information/describe pod	kubectl describe pod #POD_NAME#
Watch pod	kubectl get pod POD_NAME --watch

Verbose Debug information/describe pod

kubectl patch pod #POD_NAME# -p '{"spec":{"containers":[{"name":"kubernetes-serve-hostname"}]}}'

Exec to pod	kubectl exec -it #POD_NAME# bash
Run command in existing pod	kubectl exec -it #POD_NAME# -- ls /
Run command in existing pod (multi-container case)	kubectl exec -it #POD_NAME# -c #CONTAINER_NAME# -- ls /

Create deployment	kubectl create deployment #DEPLOYMENT_NAME# --image=busybox
Create deployment in particular namespace	kubectl create deployment #DEPLOYMENT_NAME# --image=busybox -n NAMEPSPACE
Run deployment with 2 Replicas	kubectl run #DEPLOYMENT_NAME# --image=nginx --replicas=2 --port=80
Run deployment and expose it	kubectl run #DEPLOYMENT_NAME# --image=nginx --port=80 --expose
Create deployment from File	kubectl create -f deployment.yaml
Create deployment from File in particular namespace	kubectl create -f deployment.yaml -n #NAMEPSPACE_NAME#

List deployments	kubectl get deploy or kubectl get deployment or kubectl get deployments
List deployments in all namespaces	kubectl get deploy --all-namespaces or kubectl get deploy -A
List deployments in particular namespace	kubectl get deploy -n #NAMESPACE_NAME#
List/Get Particular deployment	kubectl get deploy #DEPLOY_NAME# or kubectl get deployment #DEPLOY_NAME# or kubectl get deployments #DEPLOY_NAME#
List deployments with more information	kubectl get deployment -owide

Delete deployment	kubectl delete deploy #DEPLOYMENT_NAME# or kubectl delete -f deployment.yaml or kubectl delete deploy/#DEPLOYMENT_NAME#
Delete deployment in particular namespace	kubectl delete deployment #DEPLOYMENT_NAME# -n #NAMEPSPACE_NAME#

Verbose Debug information/describe particular Deployment	kubectl describe deployment #DEPLOYMENT_NAME#
Decribe All Deployments	kubectl describe deployments
Watch Deployment	kubectl get deployment #DEPLOYMENT_NAME# --watch

Edit Deployment	kubectl edit deployment #DEPLOY_NAME#
Patch/Update Deployment (Update nginx pod image to 1.9.1 instead of 1.7.9)	kubectl set image deployment/nginx-deployment ngnix=nginx:1.9.1 --record
Scaliing Deployment	kubectl scale deployment/nginx-deployment --replicas=2

Deployment Rollout Status	kubectl rollout status deployment/#DEPLOYMENT_MAME#
Deployment Rollout History	kubectl rollout history deployment/#DEPLOYMENT_MAME#
Pausing Rollout Deployment	kubectl rollout pause deployment/#DEPLOYMENT_MAME#
Resuming Rollout Deployment	kubectl rollout resume deployment/#DEPLOYMENT_MAME#
Rollback Deployment to Previous Verion	kubectl rollout undo deployment/#DEPLOYMENT_MAME#

Create ReplicaSet

kubectl create -f replicaset.yaml

List ReplicaSets	kubectl get rs or kubectl get replicaset or kubectl get replicasets
List ReplicaSets in all namespaces	kubectl get rs --all-namespaces or kubectl get rs -A
List ReplicaSet with more information	kubectl get rs -owide
List Specific ReplicaSet	kubectl get rs #REPLICASET_NAME#

Delete ReplicaSet

kubectl delete rs #REPLICASET_NAME# or kubectl delete -f replicaset.yaml

Create ClusterIP Service	kubectl create service clusterip #SERVICE_NAME# --tcp=5678:8080
Create ClusterIP Service in Headless Mode	kubectl create service clusterip #SERVICE_NAME# --clusterip="None"
Create NodePort Service	kubectl create service nodeport #SERVICE_NAME# --tcp=5678:8080
Create LoadBalancer Service	kubectl create service loadbalancer #SERVICE_NAME# --tcp=5678:8080
Create ExternalName Service	kubectl create service externalname #SERVICE_NAME# --extername example.com

List Service	kubectl get svc or kubectl get service or kubectl get services
List Specific Service	kubectl get svc #SERVICE_NAME#

Delete Service

kubectl delete svc #SERVICE_NAME# or kubectl delete -f service.yaml

Verbose Debug information/Describe Service

kubectl describe svc #SERVICE_NAME#

Create Namespace

kubectl create ns #NAMESPACE_NAME# or kubectl create -f namespace.yaml

List Namespace	kubectl get ns or kubectl get namespace or kubectl get namespaces
List Specific Namespace	kubectl get ns #NAMESPACE_NAME#

Delete Namespace

kubectl delete ns #NAMESPACE_NAME# or kubectl delete -f namespace.yaml

Verbose Debug information/Describe Namespace

kubectl describe ns #NAMESPACE_NAME#

Create ServiceAccount

kubectl create sa #SERVICE_ACCOUNT_NAME# or kubectl create -f service-account.yaml

List ServiceAccount	kubectl get sa or kubectl get serviceaccount or kubectl get serviceaccounts
List Specific ServiceAccount	kubectl get sa #SERVICE_ACCOUNT_NAME#

Delete ServiceAccount

kubectl delete sa #SERVICE_ACCOUNT_NAME# or kubectl delete -f service-account.yaml

Verbose Debug information/Describe ServiceAccount

kubectl describe sa #SERVICE_ACCOUNT_NAME#

List DaemonSets	kubectl get ds or kubectl get daemonset or kubectl get daemonsets
List DaemonSets in all namespaces	kubectl get ds --all-namespaces or kubectl get ds -A
List DaemonSet with more information	kubectl get ds -owide
List Specific DaemonSet	kubectl get ds #DAEMONSET_NAME#

Delete DaemonSet

kubectl delete ds #DAEMONSET_NAME# or kubectl delete -f daemonset.yaml

Verbose Debug information/Describe DaemonSet

kubectl describe ds #DAEMONSET_NAME#

Create Job	kubectl create job #JOB_NAME# --image=busybox
Create Job with linux command	kubectl create job #JOB_NAME# --image=busybox --date
Create Job from a cronjob named "cronjob-1"	kubectl create job #JOB_NAME# --from=cronjob/cronjob-1

List Jobs	kubectl get job or kubectl get jobs
List Jobs in all namespaces	kubectl get job --all-namespaces or kubectl get job -A
List Jobs with more information	kubectl get job -owide
List Specific Job	kubectl get job #JOB_NAME#

Delete job

kubectl delete job #JOB_NAME# or kubectl delete -f job.yaml

Verbose Debug information/Describe Job

kubectl describe job #JOB_NAME#

Create Scheduled CronJob

kubectl create cronjob #CRONJOB_NAME# --image=busybox --schedule="*/1 * * * *"

List CronJobs	kubectl get cj or kubectl get cronjob or kubectl get cronjobs
List CronJobs in all namespaces	kubectl get cj --all-namespaces or kubectl get cj -A
List CronJobs with more information	kubectl get cj -owide
List Specific CronJob	kubectl get cj #CRONJOB_NAME#

Delete CronJob

kubectl delete cj #CRONJOB_NAME# or kubectl delete -f cronjob.yaml

Verbose Debug information/Describe CronJob

kubectl describe cj #CRONJOB_NAME#

Create ConfigMap with from literal	kubectl create configmap #CONFIG_MAP_NAME# --from-literal=key1=config1 --from-literal=key2=config2
Create a new configmap from a file	kubectl create configmap #CONFIG_MAP_NAME# --from-file=path/to/configfile
Create ConfigMap with from environment file	kubectl create configmap #CONFIG_MAP_NAME# --from-env-file=path/to/environment-config-file

List ConfigMaps	kubectl get cm or kubectl get ConfigMap or kubectl get ConfigMaps
List ConfigMaps in all namespaces	kubectl get ConfigMap --all-namespaces or kubectl get ConfigMap -A
List ConfigMaps with more information	kubectl get ConfigMap -owide
List Specific ConfigMap	kubectl get ConfigMap #CONFIG_MAP_NAME#

Delete ConfigMap

kubectl delete ConfigMap #CONFIG_MAP_NAME# or kubectl delete -f configmap.yaml

Verbose Debug information/Describe ConfigMap

kubectl describe ConfigMap #CONFIG_MAP_NAME#

Create Secret with from literal	kubectl create secret generic #SECRET_NAME# --from-literal=secret_key1=secret_value1 --from-literal=secret_key2=secret_value2
Create a new Secret from a file	kubectl create secret generic #SECRET_NAME# --from-file=secret_key=path/to/secret_value_file

List Secrets	kubectl get secret or kubectl get secrets
List Secrets in all namespaces	kubectl get secret --all-namespaces or kubectl get secret -A
List Secrets with more information	kubectl get secret -owide
List Specific Secret	kubectl get secret #SECRET_NAME#

Delete Secret

kubectl delete secret #SECRET_NAME# or kubectl delete -f secret.yaml

Verbose Debug information/Describe Secret

kubectl describe secret #SECRET_NAME#

Create Persistent Volume

kubectl create pv #NAMESPACE_NAME# or kubectl create -f persistent_volume.yaml

List Persistent Volume	kubectl get pv or kubectl get persistentvolume or kubectl get persistentvolumes
List Specific Persistent Volume	kubectl get pv #PV_NAME#

Delete Persistent Volume

kubectl delete pv #PV_NAME# or kubectl delete -f persistent_volume.yaml

Verbose Debug information/Describe Persistent Volume

kubectl describe pv #PV_NAME#

Create Persistent Volume Claim

kubectl create pvc #NAMESPACE_NAME# or kubectl create -f persistent_volume_claim.yaml

List Persistent Volume Claim	kubectl get pvc or kubectl get persistentvolumeclaim or kubectl get persistentvolumeclaims
List Specific Persistent Volume Claim	kubectl get pvc #PVC_NAME#

Delete Persistent Volume Claim

kubectl delete pvc #PVC_NAME# or kubectl delete -f persistent_volume_claim.yaml

Verbose Debug information/Describe Persistent Volume Claim

kubectl describe pvc #PVC_NAME#

Kubernetes Cluster (Master and Worker) Nodes Required Ports

 

Master Nodes - Required Ports

Protocol	Direction	Port Range	Purpose	Used By
TCP	Inbound	6443*	Kubernetes API server	All
TCP	Inbound	2379-2380	etcd server client API	kube-apiserver, etcd
TCP	Inbound	10250	Kubelet API	Self, Control plane
TCP	Inbound	10251	kube-scheduler	Self
TCP	Inbound	10252	kube-controller-manager	Self

Worker Nodes - Required Ports

Protocol	Direction	Port Range	Purpose	Used By
TCP	Inbound	10250	Kubelet API	Self, Control plane
TCP	Inbound	30000-32767	NodePort Services†	All