Common DevOps utilities in a docker image

What's inside

• AWS CLI
• Terraform (tfenv)
• kubectl
• kubectx
• kubens
• kubeconform
• Helm
• JQ
• YQ
• HCLQ

How to use it

Add a shortcut

For a shortcut we need to consider aws and kubernetes credentials.
To avoid typing all that stuff every time, we can add a shell function to our profile:

# devops utils
dou() {
  local kube_config_dir="${HOME}/.dou/kube"
  local aws_config_dir="${HOME}/.dou/aws"
  
  # create kube config dir 
  if [ ! -d "${kube_config_dir}" ]; then
    mkdir -p "${kube_config_dir}"
  fi
  
  # create aws config dir 
  if [ ! -d "${aws_config_dir}" ]; then
    mkdir -p "${aws_config_dir}"
  fi
  
  env | grep "DOU_VERSION_" > "${HOME}/.dou/versions.env"
  
  # use -it if intent bash or sh
  docker_interactivity_flags="-i"
  arguments="${@}"
  if [ "${arguments}" = "bash" ] ||
    [ "${arguments}" = "/bin/bash" ] ||
    [ "${arguments}" = "sh" ] ||
    [ "${arguments}" = "/bin/sh" ]; then
    docker_interactivity_flags="-it"  
  fi
  
  # run the image with the command
  docker run --rm ${docker_interactivity_flags} \
    --env-file "${HOME}/.dou/versions.env" \
    -v "${HOME}/.dou/kube:/root/.kube" \
    -v "${HOME}/.dou/aws:/root/.aws" \
    -v "$(pwd):/workspace" \
    kickthemooon/devops-utils \
    $@
}

Running this shortcut function creates a configuration directory under:

$HOME/.dou

This is used for configuration files of aws, kubectl and others

Versions

To see installed versions for each tool run:

dou info

By default, the highest versions are used.
You can also take a look at versions.yaml.

Change versions

You can change versions by using env variables (DOU_VERSION_[TOOL_NAME]):

DOU_VERSION_KUBECTL="1.15.3" dou kubectl version --client

Usage examples

# jq
cat some.json | dou jq

# yq
cat some.json | dou yq

# helm
dou helm

# terraform
dou terraform

# aws-cli
dou aws

# bash
dou bash

# helm / kubernetes validation
dou helm template app ./chart | dou kubeconform