I have aks cluster and I create a pod for ansible from basic image like nginx and install everything from shell manually by shell commands(pip3 install ansible, pip3 install openshift). Now I need to create an ansible image with necessary updates, here is my dockerfile. It works fine on laptop, but when I push repo and create a pod it backoff error. Maybe someone help me to understand how I can deploy correct image for ansible. Thanks
Dockerfile:
FROM ubuntu:16.04.
RUN apt-get update && apt-get install -y --no-install-recommends \
python3.5 \
python3-pip \
python3-setuptools \
curl \
sudo \
nano \
&& \
apt-get clean && \
rm -rf /var/lib/apt/lists/*
RUN pip3 install --upgrade pip
RUN pip3 install ansible
RUN pip3 install openshift
RUN curl -sL https://aka.ms/InstallAzureCLIDeb | sudo bash
RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s
https://storage.googleapis.com/kubernetes-release/release/stable.txt`/bin/linux/amd64/kubectl
RUN chmod +x ./kubectl
RUN sudo mv ./kubectl /usr/local/bin/kubectl
# Define working directory.
WORKDIR /data
# Define default command.
CMD ["bash"]and here is ansible_pod.yaml:
apiVersion: v1
kind: Pod
metadata:
name: ansible
spec:
volumes:
- name: ansible-data
persistentVolumeClaim:
claimName: ansible-data
containers:
- name: ansible
image: ansible:latest
volumeMounts:
- mountPath: /scripts
name: ansible-data
restartPolicy: Never
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: ansible-data
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 1Gicreate a pod it backoff error.
That's because you have your CMD as bash, but (a) bash expects to be able to read from stdin if not provided with a command, and your PodSpec does permit that (b) even if it did, what do you expect the container to do? Just sit there until someone runs kubectl exec in order to run arbitrary ansible playbook commands?
I would guess the shortest path to a non-backoff error would be to ask your already created docker image to just sleep indefinitely, until someone does kubectl exec into the pod and/or you come up with what you expect the pod to do
containers:
- name: ansible
image: ansible:latest
command: ["sleep", "infinity"]While this isn't what you asked, you seem to be spending a lot of energy to install python into a generic image, instead of using a docker.io/library/python:3.5 image that comes with python already installed and merely needs the rest of those binaries laid on top of it