4. 오라클 클라우드 - 쿠버네티스 -cmd,args
<1> 파드 생성 시 실행 명령(command = 도커의 Entrypoint)과 파라미터(arge = 도커의 Cmd)를 전달
<2> env 전달
<1> 파드 생성 시 실행 명령(command = 도커의 Entrypoint)과 파라미터(arge = 도커의 Cmd)를 전달
1
cmd , args 파일 생성
topasvga@cloudshell:~ (ap-seoul-1)$ cat << EOF > cmd-args.yaml
> apiVersion: v1
> kind: Pod
> metadata:
> name: cmd-args
> spec:
> restartPolicy: OnFailure
> containers:
> - image: nginx
> name: cmd-args-nginx
> ports:
> - containerPort: 80
> protocol: TCP
> command: ["/bin/echo"]
> args: ["hello"]
> EOF
2
pod 생성
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl apply -f cmd-args.yaml
pod/cmd-args created
3
로그에 결과 확인
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl logs cmd-args
hello
4
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl delete pod --all
pod "cmd-args" deleted
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl get pod -owide
No resources found in default namespace.
<2> env 전달
pod에 환경 변수 전달
env 사용
1
topasvga@cloudshell:~ (ap-seoul-1)$ cat << EOF > env.yaml
> apiVersion: v1
> kind: Pod
> metadata:
> name: mynginx
> spec:
> containers:
> - image: nginx:latest
> name: mynginx
> ports:
> - containerPort: 80
> env:
> - name: MYPASSWORD
> value: QWE123
> EOF
2
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl apply -f env.yaml
pod/mynginx created
3
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl exec mynginx -- env
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
TERM=xterm
HOSTNAME=mynginx
MYPASSWORD=QWE123
KUBERNETES_PORT_443_TCP_PROTO=tcp
KUBERNETES_PORT_12250_TCP=tcp://10.96.0.1:12250
DEPLOYMENT_2048_PORT_80_TCP_PORT=80
KUBERNETES_SERVICE_PORT=443
KUBERNETES_PORT_443_TCP_ADDR=10.96.0.1
DEPLOYMENT_2048_PORT=tcp://10.96.214.121:80
DEPLOYMENT_2048_PORT_80_TCP=tcp://10.96.214.121:80
KUBERNETES_SERVICE_PORT_PROXYMUX=12250
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_12250_TCP_PROTO=tcp
KUBERNETES_PORT_12250_TCP_ADDR=10.96.0.1
DEPLOYMENT_2048_SERVICE_HOST=10.96.214.121
DEPLOYMENT_2048_PORT_80_TCP_ADDR=10.96.214.121
KUBERNETES_SERVICE_HOST=10.96.0.1
KUBERNETES_PORT_12250_TCP_PORT=12250
DEPLOYMENT_2048_SERVICE_PORT=80
DEPLOYMENT_2048_PORT_80_TCP_PROTO=tcp
KUBERNETES_PORT_443_TCP_PORT=443
NGINX_VERSION=1.23.3
NJS_VERSION=0.7.9
PKG_RELEASE=1~bullseye
HOME=/root
4
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl exec mynginx -- env | grep MYPASSWORD
MYPASSWORD=QWE123
5
topasvga@cloudshell:~ (ap-seoul-1)$ kubectl delete pod --all
pod "mynginx" deleted
6
topasvga@cloudshell:~ (ap-seoul-1)$ clear
감사합니다.
