CODEWITHSUNDEEP
dockerkubernetesdockerfilekubernetes-helm
vesii
vesii

Reputation: 3128

How to install kubectl and helm using dockerfile?

I'm new to Docker. I'm trying to create a dockerfile which basically sets kubectl (Kubernetes client), helm 3 and Python 3.7. I used:

FROM python:3.7-alpine
COPY ./ /usr/src/app/
WORKDIR /usr/src/app

Now I'm trying to figure out how to add kubectl and helm. What would be the best way to install those two?

Upvotes: 1

Views: 18422

Answers (4)

Viraj
Viraj

Reputation: 3

This works for me

FROM amd64/python:3.11.3-alpine

RUN apk add build-base
RUN apk add curl
# Install kubectl
RUN curl -LO "https://dl.k8s.io/release/$(curl -L -s 
    https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
RUN curl -LO "https://dl.k8s.io/$(curl -L -s 
    https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl.sha256"
RUN install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl

# Install helm
RUN curl -LO https://get.helm.sh/helm-v3.7.0-linux-amd64.tar.gz && \
    tar -zxvf helm-v3.7.0-linux-amd64.tar.gz && \
    mv linux-amd64/helm /usr/local/bin/helm && \
    rm -rf helm-v3.7.0-linux-amd64.tar.gz linux-amd64

Upvotes: 0

Abhinav Dhulipala
Abhinav Dhulipala

Reputation: 1

This Dockerfile worked for me with an ubuntu base. I needed kubectl and helm to work with the rest of the deps I had in my docker image

FROM ubuntu:22.04
ARG DEBIAN_FRONTEND=noninteractive
RUN apt-get update && apt-get install --yes --no-install-recommends ...
RUN curl -LO https://dl.k8s.io/release/v1.24.0/bin/linux/amd64/kubectl && install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
RUN wget https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 && \
    chmod 700 get-helm-3 &&\
    ./get-helm-3

Upvotes: 0

Shashank Sinha
Shashank Sinha

Reputation: 557

Working Dockerfile. This will install the latest and stable versions of kubectl and helm-3

FROM python:3.7-alpine
COPY ./ /usr/src/app/
WORKDIR /usr/src/app
RUN apk add curl openssl bash --no-cache
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" \
    && chmod +x ./kubectl \
    && mv ./kubectl /usr/local/bin/kubectl \
    && curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 \
    && chmod +x get_helm.sh && ./get_helm.sh

Upvotes: 15

kgorskowski
kgorskowski

Reputation: 844

Python should be available from a python base image I guess. My take would be s.th like

ENV K8S_VERSION=v1.18.X
ENV HELM_VERSION=v3.X.Y
ENV HELM_FILENAME=helm-${HELM_VERSION}-linux-amd64.tar.gz

and then in the Dockerfile

RUN curl -L https://storage.googleapis.com/kubernetes-release/release/${K8S_VERSION}/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
 && curl -L https://storage.googleapis.com/kubernetes-helm/${HELM_FILENAME} | tar xz && mv linux-amd64/helm /bin/helm && rm -rf linux-amd64

But be aware of the availability of curl or wget in the baseimage, maybe these or other tools and programs have to be installed before you can use it in the Dockerfile. This always depends on the baseimage used

Upvotes: 1

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