AWS ECR에 등록한 Docker 이미지를 가지고 deployment 생성할 때 아래처럼 unchanged라고 나올 때
describe, logs를 통해 메시지를 확인해야 합니다.
ECR_HOST=[1.dkr.ecr.ap-northeast-2.amazonaws.com](<http://144579678262.dkr.ecr.ap-northeast-2.amazonaws.com/>) envsubst < 22_deployment_backend-app_k8s.yaml.template | kubectl apply -f -
deployment.apps/backend-app unchanged
$ kubectl get all
NAME READY STATUS RESTARTS AGE
pod/backend-app-86b45b9856-5p7bq 0/1 CrashLoopBackOff 9 22m
pod/backend-app-86b45b9856-c688p 0/1 CrashLoopBackOff 9 22m
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.100.0.1 <none> 443/TCP 17h
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/backend-app 0/2 2 0 22m
NAME DESIRED CURRENT READY AGE
replicaset.apps/backend-app-86b45b9856 2 2 0 22m
생성 후 바로 CrashLoopBackOff 상태로 된 것을 알 수 있습니다.
$ kubectl logs pod/backend-app-86b45b9856-5p7bq
standard_init_linux.go:228: exec user process caused: exec format error
다음과 같은 에러 원인은 먼저 Mac M1에서 일부 이미지를 지원하지 않기 때문에 발생합니다.
$ docker build -t nginx-app .
따라서 위와 같이 dockerfile을 build할 때 다른 아키텍처에서 build된 이미지로 인식하기 때문에 에러가 발생합니다.
해결하기 위해서는 platform 옵션을 사용해서 아키텍처를 지정해주면 해결할 수 있습니다.
$ docker build --platform=linux/amd64 -t k8sbook/backend-app:1.0.0 --build-arg \ JAR_FILE=build/libs/backend-app-1.0.0.jar .
[+] Building 49.6s (10/10) FINISHED
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 37B 0.0s
=> [internal] load .dockerignore 0.0s
=> => transferring context: 2B 0.0s
=> [internal] load metadata for docker.io/library/amazoncorretto:11 2.8s
=> [auth] library/amazoncorretto:pull token for registry-1.docker.io 0.0s
=> [internal] load build context 2.2s
=> => transferring context: 37.97MB 2.2s
=> [1/4] FROM docker.io/library/amazoncorretto:11@sha256:664e69a27c1b21f00 7.3s
=> => resolve docker.io/library/amazoncorretto:11@sha256:6645c 0.0s
=> => sha256:d4712239075c3356be0c1002 147.43MB / 147.43MB 4.1s
=> => sha256:6645c88569a27c1b21f00 547B / 547B 0.0s
=> => sha256:5c27cdc8ae4a850472232 742B / 742B 0.0s
=> => sha256:7edd28d80dae50751af62c3 3.07kB / 3.07kB 0.0s
=> => sha256:0d13dde7e7e47dc71d447e 62.29MB / 62.29MB 2.1s
=> => extracting sha256:3dde7e7e47dc71d447e 2.5s
=> => extracting sha256:5c3356be0c1002 2.5s
=> [2/4] RUN yum install -y glibc-langpack-ko 38.4s
=> [3/4] RUN ln -sf /usr/share/zoneinfo/Asia/Seoul /etc/localtime 0.3s
=> [4/4] COPY build/libs/backend-app-1.0.0.jar app.jar 0.1s
=> exporting to image 0.6s
=> => exporting layers 0.6s
=> => writing image sha256:4978c61d35f8345 0.0s
=> => naming to docker.io/k8sbook/backend-app:1.0.0