Minikube : Basic Usage2023/06/21 |
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This is the basic operation on Single Node Kubernetes Cluster on Minikube.
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| [1] | Create or Delete Pods. |
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# run [test-nginx] pods debian@dlp:~$ kubectl create deployment test-nginx --image=nginx deployment.apps/test-nginx created kubectl get pods NAME READY STATUS RESTARTS AGE test-nginx-6b4d69f6f8-skn67 1/1 Running 0 20s # show environment variable for [test-nginx] pod debian@dlp:~$ kubectl exec test-nginx-6b4d69f6f8-skn67 -- env PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin HOSTNAME=test-nginx-6b4d69f6f8-skn67 KUBERNETES_SERVICE_PORT_HTTPS=443 KUBERNETES_PORT=tcp://10.96.0.1:443 KUBERNETES_PORT_443_TCP=tcp://10.96.0.1:443 KUBERNETES_PORT_443_TCP_PROTO=tcp KUBERNETES_PORT_443_TCP_PORT=443 KUBERNETES_PORT_443_TCP_ADDR=10.96.0.1 KUBERNETES_SERVICE_HOST=10.96.0.1 KUBERNETES_SERVICE_PORT=443 NGINX_VERSION=1.25.1 NJS_VERSION=0.7.12 PKG_RELEASE=1~bookworm HOME=/root # shell access to [test-nginx] pod debian@dlp:~$ kubectl exec -it test-nginx-6b4d69f6f8-skn67 -- bash
hostname test-nginx-6b4d69f6f8-skn67
root@test-nginx-6b4d69f6f8-skn67:/#
exit
# show logs of [test-nginx] pod debian@dlp:~$ kubectl logs test-nginx-6b4d69f6f8-skn67 /docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration /docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/ /docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh 10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf 10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf /docker-entrypoint.sh: Sourcing /docker-entrypoint.d/15-local-resolvers.envsh /docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh /docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh /docker-entrypoint.sh: Configuration complete; ready for start up 2023/06/21 04:07:45 [notice] 1#1: using the "epoll" event method 2023/06/21 04:07:45 [notice] 1#1: nginx/1.25.1 ..... ..... # scale out pods debian@dlp:~$ kubectl scale deployment test-nginx --replicas=3 deployment.apps/test-nginx scaled debian@dlp:~$ kubectl get pods NAME READY STATUS RESTARTS AGE test-nginx-6b4d69f6f8-5tbkg 1/1 Running 0 6s test-nginx-6b4d69f6f8-m6wcq 1/1 Running 0 6s test-nginx-6b4d69f6f8-skn67 1/1 Running 0 3m37s # set service debian@dlp:~$ kubectl expose deployment test-nginx --type="NodePort" --port 80 service/test-nginx exposed debian@dlp:~$ kubectl get services test-nginx NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE test-nginx NodePort 10.98.219.58 <none> 80:31628/TCP 6sdebian@dlp:~$ minikube service test-nginx --url http://192.168.39.42:31628 debian@dlp:~$ curl http://192.168.39.42:31628 <!DOCTYPE html> <html> <head> <title>Welcome to nginx!</title> ..... ..... <p><em>Thank you for using nginx.</em></p> </body> </html> # delete service debian@dlp:~$ kubectl delete services test-nginx service "test-nginx" deleted # delete pods debian@dlp:~$ kubectl delete deployment test-nginx deployment.extensions "test-nginx" deleted |
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