Vfrdtyky

I would like to sh myself inside a kubernetes pod and execute a CURL command. Unfortunatly I can't find anywhere a working image with curl availble (and compatible with kubernetes)...

1. I tried some docker images with Alpine and CURL but each time it ended with crashLoopBackOff. I guess it means the container exited because the docker image exits after executing itself...


2. I also tried using the image of alpine and ubuntu alone but each time it also ended with crashloopBackOff.


3. I manage to exec in a few images but it never had CURL installed and neither APT-GET or APK were working.

To exec into a container I'm doing a simple kubectl exec -it POD_ID /bin/bash

Does someone knows of a minimal docker image that contains a CURL binary and wont crash in kubernetes ?

PS: This is for testing purpose so it does not need to be rock solid or anything

Thx

UPDATE 1
This is the yaml I use to deploy all potential image :

apiVersion: apps/v1beta1

kind: Deployment

metadata:

  name: blue

  namespace: default

spec:

  replicas: 1

  template:

    metadata:

      labels:

        name: blue

    spec:

      containers:

      - name: blue-website

        image: SOME_IMAGE:latest

        resources:

          requests:

            cpu: 0.1

            memory: 200

I don't think that its broken because it works on certain image.

You getting CrashLoopBackOff because container completes after starting as it does not have any task to process. Easy workaround is to run a command in the container to keep it running indefinitely. So that you can exec into the container and run curl.

Here, is modified yaml to do this:

apiVersion: apps/v1beta1

kind: Deployment

metadata:

  name: blue

  namespace: default

spec:

  replicas: 1

  template:

    metadata:

      labels:

        name: blue

    spec:

      containers:

      - name: blue-website

        image: scrapinghub/httpbin:latest

        command:

        - sleep

        - "3600"

        resources:

          requests:

            cpu: 0.1

            memory: 200

You can skip the manifest and use kubectl run to spin up one of these pods on demand.
i.e.

kubectl run curl -it --rm --image=tutum/curl -- sh

This would create a deployment named curl from the tutum/curl image and give you an interactive (-it) shell inside it. When you exit, the deployment will be deleted (--rm).

You can use this image nightfury1204/alpine-curl

I created above image for my own testing purpose.

apiVersion: apps/v1

kind: StatefulSet

metadata:

  name: curl

  labels:

    name: curl

spec:

  serviceName: "curl"

  selector:

    matchLabels:

      app: curl

  replicas: 1

  template:

    metadata:

      labels:

        app: curl

    spec:

      containers:

      - name: curl

        image: nightfury1204/alpine-curl

        command:

          - "sh"

          - "-c"

          - >

            while true; do

              sleep 3600;

            done

To exec into the pod use this kubectl exec -it curl-0 sh

Use byrnedo/alpine-curl image from https://hub.docker.com/r/byrnedo/alpine-curl/.
Also it's not neccessary to have latest tag in the deployment. It works without it, just

containers:

  - name: blue-website

    image: byrnedo/alpine-curl