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standard_init_linux.go:228: exec user process caused: exec format error

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 envsubst < 22_deployment_backend-app_k8s.yaml.template | kubectl apply -f - deployment.apps/backend-app unchanged
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$ 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
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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
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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
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