Pod (Kubernetes)

Kubernetes Pods are the smallest deployable units that allows to deploy one or multiple containers as a single atomic unit. Pods are defined using kubectl apply command.

Pod related commands

• kubectl apply
• kubectl create -f mypod.yml
• Get a list of pods:

kubectl get pods

• kubectl get pod MY_POD_NAME
• kubectl delete pod MY_POD_NAME
• kubectl top pod PODNAME
• Get more information about a pod:

kubectl describe pod MY_POD_NAME

See also ReplicaSet concept.

Activities

1. CKAD: Create and configure a basic Pod: kubectl apply
2. Create a pod network: kubeadm init --pod-network-cidr=10.244.0.0/16
3. CKAD: Understand how to use Labels, Selector and Annotations
4. CKAD: Understand Deployments and how to perform rolling updates
5. CKAD: Understand Deployments and how to perform rollbacks

See also

• Pods: kubectl apply, kubectl [ pod get | top | delete | describe pods ], InitContainers, PodInitializing, CrashLoopBackOff, ImagePullPolicy:, NodeAffinity, NodeSelector, Terminated
• kubectl: [ cp | config | create | delete | edit | explain | apply | exec | get | set | drain | uncordon | rolling-update | rollout | logs | run | auth | label | annotate | version | top | diff | debug | replace | describe | port-forward | proxy | scale | rollout | api-resources | expose deployment | expose | patch | attach | get endpoints | ~/.kube/config | kubectl logs --help | kubectl --help, kubectl-convert, kubectl autoscale, kubectl.kubernetes.io
• CKA: v1.28: API, Namespace, Pods, secrets, Services, deployments, nodes, Volumes, Ingress, CKS
• Kubernetes: distributions, tools, CKA, CKS, Kubernetes interfaces: CSI, CNI, installation, workloads, networking, kubeadm, Kubernetes API, Kubernetes API Server, kubectl, kubeadm, kubelet, kube-proxy, Cloud services: EKS, GKE, TKE, DKS, Helm, Kubernetes RBAC, Kubernetes deployments, Minikube, Rancher, OpenShift, Charmed Kubernetes, Ingress, Kubernetes scheduler, Kubernetes Finalizers, logging, Kubernetes operator, Orka, kind:, Kubernetes namespaces, Kubernetes dashboard, Kubernetes Metrics Server, Field Selectors, CoreDNS, CRI, Kubernetes Topology Manager, Kubernetes governance: (SIG, KEP), Kustomize, controllers, ReadinessProbe, LivenessProbe, KOPS, K9s, Kui, k3s, ImagePullBackOff, PDB, EndPoints, Kots, metadata, Karpenter, Replicated.com, Kubernetes Authenticating, Kubernetes timeline, Changelog/Versions, service accounts, Kubernetes Pod Lifecycle, Kubernetes Conformance Certified, Kubernetes backup, Kubernetes Pod Security Admission, tEKS, Kubernetes events, Kubernetes ports, Kubernetes policies, Connect, addons, DoKC, Kubernetes control plane, Kubernetes Federation, Kubernetes info, Kubetest2, Sidecar (Kubernetes)

https://kubernetes.io/docs/concepts/workloads/pods/pod/

https://en.wikipedia.org/wiki/Kubernetes#Pods

https://kubernetes.io/docs/concepts/workloads/controllers/replicaset/