Kompos - k8s cloud automation
Kompos is a configuration driven tool for provisioning and managing Kubernetes infrastructure across AWS and Azure. It uses a hierarchical folder structure and yaml files to store and generate configurations, with pluggable compositions that encapsulates the infrastructure code and state. Terraform and helmfile are supported as provisioners.
pip3 install virtualenv # Make sure pip is up to date curl https://bootstrap.pypa.io/get-pip.py | python3 # Install virtualenv pip3 install --upgrade virtualenv pip3 install --upgrade virtualenvwrapper echo 'export WORKON_HOME=$HOME/.virtualenvs' >> ~/.bash_profile echo 'source /usr/local/bin/virtualenvwrapper.sh' >> ~/.bash_profile source ~/.bash_profile # create virtualenv mkvirtualenv kompos workon kompos # uninstall previous `kompos` version (if you have it) pip3 uninstall kompos --yes # install kompos stable release pip3 install --upgrade kompos
With kompos you can leverage nix to pin your infrastructure code (i.e terraform & helmfile releases) on a specific version. This enables you to finely control your deployments and use different infrastructure versions per environment, cluster etc.
$ curl https://nixos.org/nix/install | sh # It's used to automatically derive the commit sha & the hash of the repo, # in case those are not provided by the configuration. $ nix-env -f '<nixpkgs>' -iA nix-prefetch-git
Use the integration with the
--nix flag with each command. Below are the
necessary parts of komposconfig regarding nix & versioning:
terraform: # This is the place to look for the terraform repo locally. # Used as the default if nix is not enabled. local_path: '/home/user/terraform-stack' # This is needed in case the modules are not in the root of the repo. root_path: 'src/terraform' repo: # This will be the name of the nix derivation for terraform. name: 'terraform-stack' # The repo we would like to version. url: "firstname.lastname@example.org:my-org/terraform-stack.git" # Likewise for helmfile. helmfile: local_path: '/home/user/helmfile-releases' root_path: 'src/helmfiles' repo: name: 'helmfile-releases' url: "email@example.com:my-org/helmfile-releases.git"
And in the hierarchical configuration you'll need the following keys:
infrastructure: terraform: version: "0.1.0" # A git tag or a commit sha. # This is an optional field. # The sha256 hash of the repo provides data integrity and ensures that we # always get the same input. # # It can be omitted when you're using a tag that is periodically updated. # (e.g in a dev/nightly environment). Since this is a mandatory field for nix, # nix-prefetch-git will be used as a fallback to caclulate it. sha256: "ab9190b0ecc8060a54f1fac7de606e6b2c4757c227f2ce529668eb145d9a9516" # Likewise for helmfile. helmfile: version: "0.1.0" sha256: "139cd5119d398d06f6535f42d775986a683a90e16ce129a5fb7f48870613a1a5"
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