Minikube : Basic Usage2022/09/02 |
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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 ubuntu@dlp:~$ kubectl create deployment test-nginx --image=nginx deployment.apps/test-nginx created kubectl get pods NAME READY STATUS RESTARTS AGE test-nginx-7f4c594655-9ws99 1/1 Running 0 18s # show environment variable for [test-nginx] pod ubuntu@dlp:~$ kubectl exec test-nginx-7f4c594655-9ws99 -- env PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin HOSTNAME=test-nginx-7f4c594655-9ws99 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 KUBERNETES_SERVICE_PORT_HTTPS=443 KUBERNETES_PORT=tcp://10.96.0.1:443 NGINX_VERSION=1.23.1 NJS_VERSION=0.7.6 PKG_RELEASE=1~bullseye HOME=/root # shell access to [test-nginx] pod ubuntu@dlp:~$ kubectl exec -it test-nginx-7f4c594655-9ws99 -- bash
hostname test-nginx-7f4c594655-9ws99
root@test-nginx-7f4c594655-9ws99:/#
exit
# show logs of [test-nginx] pod ubuntu@dlp:~$ kubectl logs test-nginx-7f4c594655-9ws99 /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: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh ..... ..... # scale out pods ubuntu@dlp:~$ kubectl scale deployment test-nginx --replicas=3 deployment.apps/test-nginx scaled ubuntu@dlp:~$ kubectl get pods NAME READY STATUS RESTARTS AGE test-nginx-7f4c594655-9ws99 1/1 Running 0 3m48s test-nginx-7f4c594655-f9qqt 1/1 Running 0 13s test-nginx-7f4c594655-k6kff 1/1 Running 0 13s # set service ubuntu@dlp:~$ kubectl expose deployment test-nginx --type="NodePort" --port 80 service/test-nginx exposed ubuntu@dlp:~$ kubectl get services test-nginx NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE test-nginx NodePort 10.111.31.75 <none> 80:31753/TCP 6subuntu@dlp:~$ minikube service test-nginx --url http://192.168.39.137:31753 ubuntu@dlp:~$ curl http://192.168.39.137:31753 <!DOCTYPE html> <html> <head> <title>Welcome to nginx!</title> ..... ..... <p><em>Thank you for using nginx.</em></p> </body> </html> # delete service ubuntu@dlp:~$ kubectl delete services test-nginx service "test-nginx" deleted # delete pods ubuntu@dlp:~$ kubectl delete deployment test-nginx deployment.extensions "test-nginx" deleted |
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