Imej dari ECR ke EKS tidak berfungsi kerana Pod yang terhasil sentiasa 0/2

Apabila editor php Strawberry sedang menyelesaikan masalah penggunaan aplikasi kontena, beliau mendapati bahawa imej daripada ECR (Amazon Elastic Container Registry) kepada EKS (Amazon Elastic Kubernetes Service) tidak berfungsi dengan betul. Khususnya, Pod yang dijana sentiasa 0/2, yang bermaksud bahawa bekas tidak boleh bermula atau berjalan seperti biasa. Masalah ini mungkin melibatkan banyak aspek, termasuk masalah dengan imej itu sendiri, ralat dalam konfigurasi bekas atau pengehadan persekitaran rangkaian. Beberapa penyelesaian biasa akan diperkenalkan secara terperinci di bawah untuk membantu pembangun menyelesaikan masalah ini dengan cepat.

Kandungan soalan

Saya telah mencuba hampir segala-galanya untuk mendapatkan sesuatu di jalan yang betul tetapi masih tidak dapat memastikan pod saya berada dalam keadaan yang boleh digunakan.

Jadi saya mempunyai apl asas yang ditulis dalam go.

Saya menggunakan docker build --tag docker-gs-ping . untuk mencipta imej program Kemudian saya cuba menjalankan arahan yang sama di dalam bekas docker run --publish 8080:8080 docker-gs-ping

Kemudian saya ingin menyimpan imej saya ke amazon ecr, untuk ini saya mencipta repositori dalam ecr.

Sekarang, selepas mencipta repositori, saya menandakan imej yang wujud dalam tempatan saya.

docker tag f49366b7f534 ****40312665.dkr.ecr.us-east-1.amazonaws.com/docker-gs-ping:latest

f49366b7f534是我本地的图像标签。 docker-gs-ping ialah nama repositori dalam ecr.

Kemudian saya memuat naik imej yang ditag ke ecr menggunakan arahan.

docker push ****40312665.dkr.ecr.us-east-1.amazonaws.com/docker-gs-ping:latest

Tidak pasti sama ada arahan di atas akan menolak imej berteg atau imej terkini daripada setempat kerana tiada cara untuk menyebut imej khusus untuk ditolak ke ecr.

Hasil semasa ialah

Selepas melengkapkan langkah di atas, saya mencipta vps menggunakan fail dan arahan berikut:

eks timbunan:

---
awstemplateformatversion: '2010-09-09'
description: 'amazon eks cluster'

parameters:
  clustername:
    type: string
    default: my-eks-cluster
  numberofworkernodes:
    type: number
    default: 1
  workernodesinstancetype:
    type: string
    default: t2.micro
  kubernetesversion:
    type: string
    default: 1.22
    
resources:

  ###########################################
  ## roles
  ###########################################
  eksrole:
    type: aws::iam::role
    properties: 
      rolename: my.eks.cluster.role
      assumerolepolicydocument:
        version: "2012-10-17"
        statement:
          - effect: allow
            principal:
              service:
                - eks.amazonaws.com
            action:
              - sts:assumerole
      path: /
      managedpolicyarns:
        - "arn:aws:iam::aws:policy/amazoneksclusterpolicy"
  eksnoderole:
    type: aws::iam::role
    properties: 
      rolename: my.eks.node.role
      assumerolepolicydocument:
        version: "2012-10-17"
        statement:
          - effect: allow
            principal:
              service:
                - ec2.amazonaws.com
            action:
              - sts:assumerole
      path: /
      managedpolicyarns:
        - "arn:aws:iam::aws:policy/amazoneksworkernodepolicy"
        - "arn:aws:iam::aws:policy/amazonec2containerregistryreadonly"
        - "arn:aws:iam::aws:policy/amazoneks_cni_policy"

  ###########################################
  ## eks cluster
  ###########################################

  ekscluster:
    type: aws::eks::cluster
    properties:
      name: !ref clustername
      version: !ref kubernetesversion
      rolearn: !getatt eksrole.arn
      resourcesvpcconfig:
        securitygroupids:
          - !importvalue controlplanesecuritygroupid
        subnetids: !split [ ',', !importvalue privatesubnetids ]

  eksnodegroup:
    type: aws::eks::nodegroup
    dependson: ekscluster
    properties:
      clustername: !ref clustername
      noderole: !getatt eksnoderole.arn
      scalingconfig:
        minsize:
          ref: numberofworkernodes
        desiredsize:
          ref: numberofworkernodes
        maxsize:
          ref: numberofworkernodes
      subnets: !split [ ',', !importvalue privatesubnetids ]

Perintah: aws cloudformation create-stack --region us-east-1 --stack-name my-eks-cluster --capability capability_named_iam --template-body file://eks-stack.yaml

eks vpc yaml

---
awstemplateformatversion: '2010-09-09'
description: 'amazon eks vpc - private and public subnets'

parameters:

  vpcblock:
    type: string
    default: 192.168.0.0/16
    description: the cidr range for the vpc. this should be a valid private (rfc 1918) cidr range.

  publicsubnet01block:
    type: string
    default: 192.168.0.0/18
    description: cidrblock for public subnet 01 within the vpc

  publicsubnet02block:
    type: string
    default: 192.168.64.0/18
    description: cidrblock for public subnet 02 within the vpc

  privatesubnet01block:
    type: string
    default: 192.168.128.0/18
    description: cidrblock for private subnet 01 within the vpc

  privatesubnet02block:
    type: string
    default: 192.168.192.0/18
    description: cidrblock for private subnet 02 within the vpc

metadata:
  aws::cloudformation::interface:
    parametergroups:
      -
        label:
          default: "worker network configuration"
        parameters:
          - vpcblock
          - publicsubnet01block
          - publicsubnet02block
          - privatesubnet01block
          - privatesubnet02block

resources:
  vpc:
    type: aws::ec2::vpc
    properties:
      cidrblock:  !ref vpcblock
      enablednssupport: true
      enablednshostnames: true
      tags:
      - key: name
        value: !sub '${aws::stackname}-vpc'

  internetgateway:
    type: "aws::ec2::internetgateway"

  vpcgatewayattachment:
    type: "aws::ec2::vpcgatewayattachment"
    properties:
      internetgatewayid: !ref internetgateway
      vpcid: !ref vpc

  publicroutetable:
    type: aws::ec2::routetable
    properties:
      vpcid: !ref vpc
      tags:
      - key: name
        value: public subnets
      - key: network
        value: public

  privateroutetable01:
    type: aws::ec2::routetable
    properties:
      vpcid: !ref vpc
      tags:
      - key: name
        value: private subnet az1
      - key: network
        value: private01

  privateroutetable02:
    type: aws::ec2::routetable
    properties:
      vpcid: !ref vpc
      tags:
      - key: name
        value: private subnet az2
      - key: network
        value: private02

  publicroute:
    dependson: vpcgatewayattachment
    type: aws::ec2::route
    properties:
      routetableid: !ref publicroutetable
      destinationcidrblock: 0.0.0.0/0
      gatewayid: !ref internetgateway

  privateroute01:
    dependson:
    - vpcgatewayattachment
    - natgateway01
    type: aws::ec2::route
    properties:
      routetableid: !ref privateroutetable01
      destinationcidrblock: 0.0.0.0/0
      natgatewayid: !ref natgateway01

  privateroute02:
    dependson:
    - vpcgatewayattachment
    - natgateway02
    type: aws::ec2::route
    properties:
      routetableid: !ref privateroutetable02
      destinationcidrblock: 0.0.0.0/0
      natgatewayid: !ref natgateway02

  natgateway01:
    dependson:
    - natgatewayeip1
    - publicsubnet01
    - vpcgatewayattachment
    type: aws::ec2::natgateway
    properties:
      allocationid: !getatt 'natgatewayeip1.allocationid'
      subnetid: !ref publicsubnet01
      tags:
      - key: name
        value: !sub '${aws::stackname}-natgatewayaz1'

  natgateway02:
    dependson:
    - natgatewayeip2
    - publicsubnet02
    - vpcgatewayattachment
    type: aws::ec2::natgateway
    properties:
      allocationid: !getatt 'natgatewayeip2.allocationid'
      subnetid: !ref publicsubnet02
      tags:
      - key: name
        value: !sub '${aws::stackname}-natgatewayaz2'

  natgatewayeip1:
    dependson:
    - vpcgatewayattachment
    type: 'aws::ec2::eip'
    properties:
      domain: vpc

  natgatewayeip2:
    dependson:
    - vpcgatewayattachment
    type: 'aws::ec2::eip'
    properties:
      domain: vpc

  publicsubnet01:
    type: aws::ec2::subnet
    metadata:
      comment: subnet 01
    properties:
      mappubliciponlaunch: true
      availabilityzone:
        fn::select:
        - '0'
        - fn::getazs:
            ref: aws::region
      cidrblock:
        ref: publicsubnet01block
      vpcid:
        ref: vpc
      tags:
      - key: name
        value: !sub "${aws::stackname}-publicsubnet01"
      - key: kubernetes.io/role/elb
        value: 1

  publicsubnet02:
    type: aws::ec2::subnet
    metadata:
      comment: subnet 02
    properties:
      mappubliciponlaunch: true
      availabilityzone:
        fn::select:
        - '1'
        - fn::getazs:
            ref: aws::region
      cidrblock:
        ref: publicsubnet02block
      vpcid:
        ref: vpc
      tags:
      - key: name
        value: !sub "${aws::stackname}-publicsubnet02"
      - key: kubernetes.io/role/elb
        value: 1

  privatesubnet01:
    type: aws::ec2::subnet
    metadata:
      comment: subnet 03
    properties:
      availabilityzone:
        fn::select:
        - '0'
        - fn::getazs:
            ref: aws::region
      cidrblock:
        ref: privatesubnet01block
      vpcid:
        ref: vpc
      tags:
      - key: name
        value: !sub "${aws::stackname}-privatesubnet01"
      - key: kubernetes.io/role/internal-elb
        value: 1

  privatesubnet02:
    type: aws::ec2::subnet
    metadata:
      comment: private subnet 02
    properties:
      availabilityzone:
        fn::select:
        - '1'
        - fn::getazs:
            ref: aws::region
      cidrblock:
        ref: privatesubnet02block
      vpcid:
        ref: vpc
      tags:
      - key: name
        value: !sub "${aws::stackname}-privatesubnet02"
      - key: kubernetes.io/role/internal-elb
        value: 1

  publicsubnet01routetableassociation:
    type: aws::ec2::subnetroutetableassociation
    properties:
      subnetid: !ref publicsubnet01
      routetableid: !ref publicroutetable

  publicsubnet02routetableassociation:
    type: aws::ec2::subnetroutetableassociation
    properties:
      subnetid: !ref publicsubnet02
      routetableid: !ref publicroutetable

  privatesubnet01routetableassociation:
    type: aws::ec2::subnetroutetableassociation
    properties:
      subnetid: !ref privatesubnet01
      routetableid: !ref privateroutetable01

  privatesubnet02routetableassociation:
    type: aws::ec2::subnetroutetableassociation
    properties:
      subnetid: !ref privatesubnet02
      routetableid: !ref privateroutetable02

  controlplanesecuritygroup:
    type: aws::ec2::securitygroup
    properties:
      groupdescription: cluster communication with worker nodes
      vpcid: !ref vpc

outputs:

  publicsubnetids:
    description: public subnets ids in the vpc
    value: !join [ ",", [ !ref publicsubnet01, !ref publicsubnet02 ] ]
    export:
      name: publicsubnetids
  
  privatesubnetids:
    description: private subnets ids in the vpc
    value: !join [ ",", [ !ref privatesubnet01, !ref privatesubnet02 ] ]
    export:
      name: privatesubnetids

  controlplanesecuritygroupid:
    description: security group for the cluster control plane communication with worker nodes
    value: !ref controlplanesecuritygroup
    export:
      name: controlplanesecuritygroupid

  vpcid:
    description: the vpc id
    value: !ref vpc
    export:
      name: vpcid

Perintah: aws cloudformation create-stack --region us-east-1 --stack-name my-eks-vpc --template-body file://eks-vpc-stack.yaml

Hasil selepas arahan:

Kini saya cuba menggunakan fail deployment.yaml dan service.yaml

deployment.yaml

apiversion: apps/v1
kind: deployment
metadata:
  name: helloworld
  namespace: default
spec:
  replicas: 2
  selector:
    matchlabels:
      app: helloworld
  template:
    metadata:
      labels:
        app: helloworld
    spec:
      containers:
        - name: new-container
          image: ****40312665.dkr.ecr.us-east-1.amazonaws.com/docker-gs-ping:latest
          ports:
            - containerport: 80

Arahan dan keputusan:

Sekarangservice.yaml

apiversion: v1
kind: service
metadata:
  name: helloworld
spec:
  type: loadbalancer
  selector:
    app: helloworld
  ports:
    - name: http
      port: 80
      targetport: 80

Arahan dan keputusan:

Selepas semua ini selesai, apabila saya menjalankan kubectl get deploy, saya mendapat hasil berikut:

Untuk nyahpepijat, saya mencuba kubectl describe pod helloworld dan saya mendapat yang berikut

C:\Users\visratna\GolandProjects\testaws>kubectl describe pod helloworld
Name:             helloworld-c6dc56598-jmpvr
Namespace:        default
Priority:         0
Service Account:  default
Node:             docker-desktop/192.168.65.4
Start Time:       Fri, 07 Jul 2023 22:22:18 +0530
Labels:           app=helloworld
                  pod-template-hash=c6dc56598
Annotations:      <none>
Status:           Pending
IP:               10.1.0.7
IPs:
  IP:           10.1.0.7
Controlled By:  ReplicaSet/helloworld-c6dc56598
Containers:
  new-container:
    Container ID:
    Image:          549840312665.dkr.ecr.us-east-1.amazonaws.com/docker-gs-ping:latest
    Image ID:
    Port:           80/TCP
    Host Port:      0/TCP
    State:          Waiting
      Reason:       ImagePullBackOff
    Ready:          False
    Restart Count:  0
    Environment:    <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-sldvv (ro)
Conditions:
  Type              Status
  Initialized       True
  Ready             False
  ContainersReady   False
  PodScheduled      True
Volumes:
  kube-api-access-sldvv:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
QoS Class:                   BestEffort
Node-Selectors:              <none>
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
  Type     Reason     Age                   From               Message
  ----     ------     ----                  ----               -------
  Normal   Scheduled  23m                   default-scheduler  Successfully assigned default/helloworld-c6dc56598-jmpvr to docker-desktop
  Normal   Pulling    22m (x4 over 23m)     kubelet            Pulling image "549840312665.dkr.ecr.us-east-1.amazonaws.com/docker-gs-ping:latest"
  Warning  Failed     22m (x4 over 23m)     kubelet            Failed to pull image "549840312665.dkr.ecr.us-east-1.amazonaws.com/docker-gs-ping:latest": rpc error: code = Unknown desc = Error response from daemon: Head "https://549840312665.dkr.ecr.us-east-1.amazonaws.com/v2/docker-gs-ping/manifests/latest": no basic auth credentials
  Warning  Failed     22m (x4 over 23m)     kubelet            Error: ErrImagePull
  Warning  Failed     22m (x6 over 23m)     kubelet            Error: ImagePullBackOff
  Normal   BackOff    3m47s (x85 over 23m)  kubelet            Back-off pulling image "549840312665.dkr.ecr.us-east-1.amazonaws.com/docker-gs-ping:latest"

Name:             helloworld-c6dc56598-r9b4d
Namespace:        default
Priority:         0
Service Account:  default
Node:             docker-desktop/192.168.65.4
Start Time:       Fri, 07 Jul 2023 22:22:18 +0530
Labels:           app=helloworld
                  pod-template-hash=c6dc56598
Annotations:      <none>
Status:           Pending
IP:               10.1.0.6
IPs:
  IP:           10.1.0.6
Controlled By:  ReplicaSet/helloworld-c6dc56598
Containers:
  new-container:
    Container ID:
    Image:          549840312665.dkr.ecr.us-east-1.amazonaws.com/docker-gs-ping:latest
    Image ID:
    Port:           80/TCP
    Host Port:      0/TCP
    State:          Waiting
      Reason:       ImagePullBackOff
    Ready:          False
    Restart Count:  0
    Environment:    <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-84rw4 (ro)
Conditions:
  Type              Status
  Initialized       True
  Ready             False
  ContainersReady   False
  PodScheduled      True
Volumes:
  kube-api-access-84rw4:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
QoS Class:                   BestEffort
Node-Selectors:              <none>
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
  Type     Reason     Age                   From               Message
  ----     ------     ----                  ----               -------
  Normal   Scheduled  23m                   default-scheduler  Successfully assigned default/helloworld-c6dc56598-r9b4d to docker-desktop
  Normal   Pulling    22m (x4 over 23m)     kubelet            Pulling image "549840312665.dkr.ecr.us-east-1.amazonaws.com/docker-gs-ping:latest"
  Warning  Failed     22m (x4 over 23m)     kubelet            Failed to pull image "549840312665.dkr.ecr.us-east-1.amazonaws.com/docker-gs-ping:latest": rpc error: code = Unknown desc = Error response from daemon: Head "https://549840312665.dkr.ecr.us-east-1.amazonaws.com/v2/docker-gs-ping/manifests/latest": no basic auth credentials
  Warning  Failed     22m (x4 over 23m)     kubelet            Error: ErrImagePull
  Warning  Failed     22m (x6 over 23m)     kubelet            Error: ImagePullBackOff
  Normal   BackOff    3m43s (x86 over 23m)  kubelet            Back-off pulling image "549840312665.dkr.ecr.us-east-1.amazonaws.com/docker-gs-ping:latest"

Saya telah mencuba banyak penyelesaian seperti yang dicadangkan pada stackoverflow tetapi nampaknya tiada apa-apa yang berkesan untuk saya, apa-apa cadangan bagaimana saya boleh membuat sesuatu berfungsi? Terima kasih banyak-banyak terlebih dahulu.

Penyelesaian

Ada beberapa perkara. Pertama, anda harus mengelak daripada menggunakan teg terkini. Ini adalah anti-corak. Apabila anda menolak imej ke ECR, gunakan label binaan atau nombor versi sebagai label imej. Kedua, anda perlu mengesahkan bahawa nod pekerja anda mempunyai kebenaran untuk menarik imej daripada ECR, khususnya dasar AmazonEC2ContainerRegistryReadOnly. Jika tidak, kubelet tidak akan dapat menarik imej daripada ECR. Jika pendaftaran berada dalam akaun yang berbeza daripada kluster, anda perlu membuat dasar [sumber] repositori. Lihat https://docs.aws.amazon.com/AmazonECR/latest/userguide/repository-policies.html.

Atas ialah kandungan terperinci Imej dari ECR ke EKS tidak berfungsi kerana Pod yang terhasil sentiasa 0/2. Untuk maklumat lanjut, sila ikut artikel berkaitan lain di laman web China PHP!