chapter-2-install-config-and-validate-12.md

Table of Contents

Chapter 2: Install, Config and Validate (12%)

• Binaries/Provision/Types
• Installing Master and Nodes
• Highly Available Cluster
• Secure Cluster
• End-to-End Tests

Install, Config and Validate

Binaries/Provision/Types

Command References

-- view addresses of master and services
$ kubectl cluster-info

-- show kubeconfig settings
$ kubectl config view

-- show all nodes details
$ kubectl describe nodes

-- show all pod details
$ kubectl describe pods

-- show all services
$ kubectl get services --all-namespaces

-- show all resources
$ kubectl api-resources -o wide

References and Further Study

• https://kubernetes.io/docs/home/

Installing Master and Nodes

Kubernetes cluster can install in two ways

• Kubernetes Hard Way
• Kubeadm Way

References and Further Study

• https://github.com/mmumshad/kubernetes-the-hard-way
• https://github.com/gitmehedi/cloudtuts/blob/develop/kubernetes/kubernetes_installation.md

Highly Available Cluster

References and Further Study

• https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/high-availability/

Secure Cluster

Command References

-- view the kubeconfig
$ cat .kube/config | more

-- view service account token
$ kubectl get secrets

References and Further Study

• https://kubernetes.io/docs/reference/access-authn-authz/controlling-access/

End-to-End Tests

For end-to-end test verify those checklist

• Deployments can run
• Pods can run
• Pod can directly access
• Logs can be collected
• Command run from Pod
• Services can provide access
• Nodes are healthy
• Pods are healthy

Command References

-- run a simple nginx deployements
$ kubectl run nginx --image=nginx

-- view current deployements
$ kubectl get deploy
-- lists the pods in the cluster
$ kubectl get pods

-- forward port 80 to 8081 on pod
$ kubectl port-forward nginx 8081:80

-- get a response from nginx pod
$ curl --head http://127.0.0.1:8081

-- get pods logs
$ kubectl logs nginx

-- run a command on the pod nginx
$ kubectl exec -t nginx -- nginx -v 

-- create a service using our deployment
$ kubectl expose deploy nginx --port 80 --type NodePort

-- list the services in the cluster
$ kubectl get services

-- get a response from a service
$ curl -I localhost:<node_port>

-- list node status
$ kubectl get nodes

-- get details info about node
$ kubectl describe nodes

-- get details info about pods
$ kubectl describe pods

References and Further Study

• https://github.com/gitmehedi/cloudtuts/blob/develop/kubernetes/kubernetes_installation.md

Table of Contents
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Next Chapter: Chapter 3: Cluster (11%)