Minikube : Basic Usage2022/07/20 |
This is the basic operation on Single Node Kubernetes Cluster on Minikube.
|
[1] | Create or Delete Pods. |
# run [test-nginx] pods [cent@dlp ~]$ kubectl create deployment test-nginx --image=nginx deployment.apps/test-nginx created kubectl get pods NAME READY STATUS RESTARTS AGE test-nginx-7f4c594655-c5jzp 1/1 Running 0 16s # show environment variables for [test-nginx] pod [cent@dlp ~]$ kubectl exec test-nginx-7f4c594655-c5jzp -- env PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin HOSTNAME=test-nginx-7f4c594655-c5jzp 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 KUBERNETES_SERVICE_PORT_HTTPS=443 NGINX_VERSION=1.23.1 NJS_VERSION=0.7.6 PKG_RELEASE=1~bullseye HOME=/root # shell access to [test-nginx] pod [cent@dlp ~]$ kubectl exec -it test-nginx-7f4c594655-c5jzp -- bash
hostname test-nginx-7f4c594655-c5jzp
root@test-nginx-7f4c594655-c5jzp:/#
exit
# show logs of [test-nginx] pod [cent@dlp ~]$ kubectl logs test-nginx-7f4c594655-c5jzp /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 /docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh /docker-entrypoint.sh: Configuration complete; ready for start up 2022/07/20 01:01:48 [notice] 1#1: using the "epoll" event method 2022/07/20 01:01:48 [notice] 1#1: nginx/1.23.1 2022/07/20 01:01:48 [notice] 1#1: built by gcc 10.2.1 20210110 (Debian 10.2.1-6) 2022/07/20 01:01:48 [notice] 1#1: OS: Linux 5.10.57 2022/07/20 01:01:48 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:1048576 2022/07/20 01:01:48 [notice] 1#1: start worker processes 2022/07/20 01:01:48 [notice] 1#1: start worker process 32 2022/07/20 01:01:48 [notice] 1#1: start worker process 33 # scale out pods [cent@dlp ~]$ kubectl scale deployment test-nginx --replicas=3 deployment.apps/test-nginx scaled [cent@dlp ~]$ kubectl get pods NAME READY STATUS RESTARTS AGE test-nginx-7f4c594655-c5jzp 1/1 Running 0 3m42s test-nginx-7f4c594655-h8hdh 1/1 Running 0 9s test-nginx-7f4c594655-r7mkl 1/1 Running 0 9s # set service [cent@dlp ~]$ kubectl expose deployment test-nginx --type="NodePort" --port 80 service/test-nginx exposed [cent@dlp ~]$ kubectl get services test-nginx NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE test-nginx NodePort 10.101.185.10 <none> 80:32225/TCP 4s
[cent@dlp ~]$
[cent@dlp ~]$ minikube service test-nginx --url http://192.168.39.57:32225 curl http://192.168.39.57:32225 <!DOCTYPE html> <html> <head> <title>Welcome to nginx!</title> ..... ..... <p><em>Thank you for using nginx.</em></p> </body> </html> # delete service [cent@dlp ~]$ kubectl delete services test-nginx service "test-nginx" deleted # delete pods [cent@dlp ~]$ kubectl delete deployment test-nginx deployment.extensions "test-nginx" deleted |
Sponsored Link |
|