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ansible-role-kubectl

Installs kubectl command line utility used to interact with the Kubernetes API Server.

Versions

I tag every release and try to stay with semantic versioning. If you want to use the role I recommend to checkout the latest tag. The master branch is basically development while the tags mark stable releases. But in general I try to keep master in good shape too. A tag 14.0.0+1.20.2 means this is release 14.0.0 of this role and kubectl client binary version is 1.20.2. If the role itself changes X.Y.Z before + will increase. If the Kubernetes version changes X.Y.Z after + will increase. This allows to tag bugfixes and new major versions of the role while it's still developed for a specific Kubernetes release.

Changelog

see CHANGELOG

Role Variables

# "kubectl" version to install
kubectl_version: "1.20.2"

# The default "archive" will download "kubectl" as a ".tar.gz" file. This is
# about 2.5x smaller then "binary" but the tarball needs to be unarchived
# by the role first after downloading.
# If you specify "binary" the "kubectl" binary file will be downloaded. In
# contrast to the tarball the binary file is about 2.5x bigger but doesn't
# need to be unarchived by this role.
# If download file size is important for you (e.g. slow download or download
# over mobile link) stay with "archive". Otherwise "binary" might be an option.
kubectl_download_filetype: "binary"
# SHA512 checksum of the .tar.gz file (see https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.20.md#client-binaries)
kubectl_checksum_archive: "sha512:e4513cdd65ed980d493259cc7eaa63c415f97516db2ea45fa8c743a6e413a0cdaf299d03dd799286cf322182bf9694204884bb0dd0037cf44592ddfa5e51f183"
# SHA512 checksum of the binary (see https://storage.googleapis.com/kubernetes-release/release/v1.20.2/bin/linux/amd64/kubectl.sha512)
kubectl_checksum_binary: "sha512:95bc86fef323bf6e4c340565a8d8284c03ed5dbf44d7d5ec271ed9f1347c54d0484437fc598ff99a2000ed60064e7a92c64484e1764bea6dbd2082ff0c95e7f1"

# Where to install "kubectl" binary
kubectl_bin_directory: "/usr/local/bin"

# Directory to store the kubeclient archive
kubectl_tmp_directory: "{{ lookup('env', 'TMPDIR') | default('/tmp',true) }}"

# Owner of "kubectl" binary
kubectl_owner: "root"

# Group of "kubectl" binary
kubectl_group: "root"

# Specifies the permissions of the "kubectl" binary
kubectl_binary_mode: "0755"

# Operarting system on which "kubectl" should run on
kubectl_os: "linux" # use "darwin" for MacOS X, "windows" for Windows

# Processor architecture "kubectl" should run on
kubectl_arch: "amd64" # other possible values: "386","arm64","arm","ppc64le","s390x"

Testing

This role has a small test setup that is created using molecule. To run the tests follow the molecule install guide. Also ensure that a Docker daemon runs on your machine.

Assuming Docker is already installed you need at least two Python packages:

pip3 install --user molecule
pip3 install --user molecule-docker

Afterwards molecule can be executed:

molecule converge

This will setup two Docker container with Ubuntu 20.04 and 18.04 with kubectl installed. So you should be able to execute the following commands if everything worked well:

docker exec -it test-ubuntu-2004 kubectl version --client=true
Client Version: version.Info{Major:"1", Minor:"20", GitVersion:"v1.20.2", GitCommit:"faecb196815e248d3ecfb03c680a4507229c2a56", GitTreeState:"clean", BuildDate:"2021-01-13T13:28:09Z", GoVersion:"go1.15.5", Compiler:"gc", Platform:"linux/amd64"}

docker exec -it test-ubuntu-1804 kubectl version --client=true
Client Version: version.Info{Major:"1", Minor:"20", GitVersion:"v1.20.2", GitCommit:"faecb196815e248d3ecfb03c680a4507229c2a56", GitTreeState:"clean", BuildDate:"2021-01-13T13:28:09Z", GoVersion:"go1.15.5", Compiler:"gc", Platform:"linux/amd64"}

To clean up run

molecule destroy

Example Playbook

- hosts: your-host
  roles:
    - githubixx.kubectl

License

GNU GENERAL PUBLIC LICENSE Version 3

Author Information

http://www.tauceti.blog

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Installs kubectl command line utility used to interact with the Kubernetes API Server

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