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Glossarypod | Group of containers that are deployed together on the same host | service | Abstraction which defines a logical set of pods and a policy by which to access them | node | Worker machine in the cluster | configmap | Public configuration data in the form of a key-value pair | secret | Private configuration data | job | Creates pod(s) and ensures that a specified number successfully terminate | cronjob | Time-based job | ingress | API object that manages external access to the services in a cluster, typically HTTP. | deployment | Desired state of pods for declarative updates | daemonset | Specification that requires a particular pod to be run on some or all nodes | replicaset | Requirement that a specified number of pods are running at any given time | persistentvolume | Persistent storage in the cluster with an independent lifecycle | persistentvolumeclaim | Request for storage (for a PersistentVolume) by a user |
Cluster Managementkubectl proxy
| Proxy the api server API to your local machine on port 8001 | kubectl port-forward {pod_name} {local_port}: {remote_port}
| Forward the pod port to your local port | kubectl scale --replicas=3 {resource_type}/{resource_name }
| Scale given resource |
| | Viewing Objectskubectl get --all-namespaces {object_type}
| Get objects from all namespaces | kubectl describe {object_type}
| Describes the given objects | kubectl get services --sort-by=.metadata.name
| List services sorted by name | kubectl get pods --field-selector=status.phase=Running
| Get list of running pods | kubectl get events
| Show events |
Modifying Objectskubectl apply -f ./mymanifest.yaml
| Apply a configuration to a object by filename or stdin. Also overrides the existing configuration. | kubectl create -f ./mymanifest.yaml
| Create object(s) | kubectl create -f ./dir
| Create object(s) in all manifest files in dir | | Create from url | kubectl run nginx --image=nginx
| Start a single instance of nginx | kubectl replace -- force -f ./pod.json
| Force replace, delete and then re-create the resource. Will cause a service outage. | kubectl edit svc/dockerregistry
| Edit the service named docker-registry |
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