Minikube : Basic Usage2024/05/13 |
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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-6cc69bb979-vxmmc 1/1 Running 0 12s # show environment variable for [test-nginx] pod ubuntu@dlp:~$ kubectl exec test-nginx-6cc69bb979-vxmmc -- env PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin HOSTNAME=test-nginx-6cc69bb979-vxmmc KUBERNETES_SERVICE_HOST=10.96.0.1 KUBERNETES_SERVICE_PORT=443 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 NGINX_VERSION=1.25.5 NJS_VERSION=0.8.4 NJS_RELEASE=3~bookworm PKG_RELEASE=1~bookworm HOME=/root # shell access to [test-nginx] pod ubuntu@dlp:~$ kubectl exec -it test-nginx-6cc69bb979-vxmmc -- bash
hostname test-nginx-6cc69bb979-vxmmc
root@test-nginx-6cc69bb979-vxmmc:/#
exit
# show logs of [test-nginx] pod ubuntu@dlp:~$ kubectl logs test-nginx-6cc69bb979-vxmmc /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 2024/05/13 03:24:55 [notice] 1#1: using the "epoll" event method 2024/05/13 03:24:55 [notice] 1#1: nginx/1.25.5 2024/05/13 03:24:55 [notice] 1#1: built by gcc 12.2.0 (Debian 12.2.0-14) ..... ..... # 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-6cc69bb979-5xxcl 1/1 Running 0 10s test-nginx-6cc69bb979-hndth 1/1 Running 0 10s test-nginx-6cc69bb979-vxmmc 1/1 Running 0 3m11s # 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 10.105.245.211 <none> 80:32535/TCP 4subuntu@dlp:~$ minikube service test-nginx --url http://192.168.39.62:32535 ubuntu@dlp:~$ curl http://192.168.39.62:32535 <!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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