Minikube : 基本操作2021/08/30 |
Minikube で構成した シングルノード Kubernetes クラスターでの Pod 作成等の基本操作です。
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[1] | Pod の作成/削除等の操作です。 |
# [test-nginx] pod を起動する debian@dlp:~$ kubectl create deployment test-nginx --image=nginx deployment.apps/test-nginx created kubectl get pods NAME READY STATUS RESTARTS AGE test-nginx-59ffd87f5-2j957 1/1 Running 0 26s # [test-nginx] pod の環境変数を表示する debian@dlp:~$ kubectl exec test-nginx-59ffd87f5-2j957 -- env PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin HOSTNAME=test-nginx-59ffd87f5-2j957 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 KUBERNETES_PORT_443_TCP=tcp://10.96.0.1:443 KUBERNETES_PORT_443_TCP_PROTO=tcp KUBERNETES_PORT_443_TCP_PORT=443 NGINX_VERSION=1.21.1 NJS_VERSION=0.6.1 PKG_RELEASE=1~buster HOME=/root # [test-nginx] pod にシェルアクセス debian@dlp:~$ kubectl exec -it test-nginx-59ffd87f5-2j957 -- bash
hostname test-nginx-59ffd87f5-2j957
root@test-nginx-59ffd87f5-2j957:/#
exit
# [test-nginx] pod のログを表示する debian@dlp:~$ kubectl logs test-nginx-59ffd87f5-2j957 /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 ..... ..... # pod をスケールアウトする 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-59ffd87f5-2j957 1/1 Running 0 2m28s test-nginx-59ffd87f5-cx2wr 1/1 Running 0 7s test-nginx-59ffd87f5-rmspp 1/1 Running 0 7s # サービスを設定する 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 10.108.51.189 <none> 80:30900/TCP 6sdebian@dlp:~$ minikube service test-nginx --url http://192.168.39.79:30900 debian@dlp:~$ curl http://192.168.39.79:30900 <!DOCTYPE html> <html> <head> <title>Welcome to nginx!</title> ..... ..... <p><em>Thank you for using nginx.</em></p> </body> </html> # サービスを削除する debian@dlp:~$ kubectl delete services test-nginx service "test-nginx" deleted # Pod を削除する debian@dlp:~$ kubectl delete deployment test-nginx deployment.extensions "test-nginx" deleted |
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