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How to fix Kubernetes create container error

10/15/2019

When I tries create pod from docker images, I get create container error. Here is my pod.yml file

apiVersion: v1
kind: Pod
metadata:
  name: client
spec:
  containers:
    - image: es-tutorial_web
      imagePullPolicy: Never
      name: es-web
      ports:
        - containerPort: 3000
    - image: es-tutorial_filebeat
      imagePullPolicy: Never
      name: es-filebeat

docker-compose.yml

version: '3.7'
services:
  web:
    build:
      context: .
      dockerfile: ./Dockerfile
    container_name: test-app
    working_dir: /usr/src/app
    command: /bin/bash startup.sh
    volumes:
      - .:/usr/src/app
    ports:
      - "3000:3000"
    networks:
      - logs
  filebeat:
    build:
      context: .
      dockerfile: filebeat/Dockerfile
    container_name: test-filebeat
    volumes:
      - .:/usr/src/app
    depends_on:
      - web
    networks:
      - logs

networks:
  logs:
    driver: bridge

kubectl get pods

client                               1/2     CreateContainerError   0          24m

kubectl describe client

Name:         client
Namespace:    default
Priority:     0
Node:         minikube/10.0.2.15
Start Time:   Tue, 15 Oct 2019 15:29:02 +0700
Labels:       <none>
Annotations:  kubectl.kubernetes.io/last-applied-configuration:
                {"apiVersion":"v1","kind":"Pod","metadata":{"annotations":{},"name":"client","namespace":"default"},"spec":{"containers":[{"image":"es-tut...
Status:       Pending
IP:           172.17.0.8
Containers:
  es-web:
    Container ID:   
    Image:          es-tutorial_web
    Image ID:       
    Port:           3000/TCP
    Host Port:      0/TCP
    State:          Waiting
      Reason:       CreateContainerError
    Ready:          False
    Restart Count:  0
    Environment:    <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from default-token-5ftqt (ro)
  es-filebeat:
    Container ID:   docker://4174e7eb5bf8abe7662698c96d7945a546503f3c5494cad2ae10d2a8d4f02762
    Image:          es-tutorial_filebeat
    Image ID:       docker://sha256:4e3d24ef67bb05b2306eb49eab9d8a3520aa499e7a30cf0856b8658807b49b57
    Port:           <none>
    Host Port:      <none>
    State:          Running
      Started:      Tue, 15 Oct 2019 15:29:03 +0700
    Ready:          True
    Restart Count:  0
    Environment:    <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from default-token-5ftqt (ro)
Conditions:
  Type              Status
  Initialized       True 
  Ready             False 
  ContainersReady   False 
  PodScheduled      True 
Volumes:
  default-token-5ftqt:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  default-token-5ftqt
    Optional:    false
QoS Class:       BestEffort
Node-Selectors:  <none>
Tolerations:     node.kubernetes.io/not-ready:NoExecute for 300s
                 node.kubernetes.io/unreachable:NoExecute for 300s
Events:
  Type     Reason     Age                   From               Message
  ----     ------     ----                  ----               -------
  Normal   Scheduled  13m                   default-scheduler  Successfully assigned default/client to minikube
  Normal   Pulled     13m                   kubelet, minikube  Container image "es-tutorial_filebeat" already present on machine
  Normal   Created    13m                   kubelet, minikube  Created container es-filebeat
  Normal   Started    13m                   kubelet, minikube  Started container es-filebeat
  Warning  Failed     11m (x11 over 13m)    kubelet, minikube  Error: Error response from daemon: No command specified
  Normal   Pulled     3m26s (x50 over 13m)  kubelet, minikube  Container image "es-tutorial_web" already present on machine

Dockerfile

...
RUN apt-get update && apt-get install -y curl

RUN curl -sL "https://deb.nodesource.com/setup_12.x" | bash - && apt-get install -y nodejs && echo 'node' > node
RUN mkdir -p /usr/src/app
COPY . /usr/src/app
WORKDIR /usr/src/app
RUN chmod +x startup.sh
RUN npm install -g nodemon

startup.sh

if [ ! -d /usr/src/app/node_modules ]; then
  echo "Install dependencies..."
  cd /usr/src/app && npm install --no-bin-links
fi
cd /usr/src/app && nodemon -L bin/www

Where is my wrong? Please help me

-- Akashii

docker

kubernetes

1 Answer

10/15/2019

I believe you're missing CMD or ENTRYPOINT in your Dockerfile. They're required to run the container.

It should be set to some default command which you plan to run when executing container.

If startup.sh is your script running the app, try the following:

ENTRYPOINT /usr/src/app/startup.sh

Or modify your Dockerfile to:

# ...
WORKDIR /usr/src/app
RUN chmod +x startup.sh
RUN npm install -g nodemon
RUN test ! -d /usr/src/app/node_modules && npm install --no-bin-links
ENTRYPOINT ["/usr/src/app/nodemon", "-L", "bin/www"]

-- kenorb

Source: StackOverflow

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How to fix Kubernetes create container error

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