kubeinit 1.0.1

The Kubeinit CLI

The KUBErnetes INITiator

Periodic jobs

What is KubeInit?

KubeInit provides Ansible playbooks and roles for the deployment and configuration of multiple Kubernetes distributions. KubeInit's mission is to have a fully automated way to deploy in a single command a curated list of prescribed architectures.

Documentation

KubeInit's documentation is hosted in this same repository.

KubeInit supported scenarios

K8s distribution: OKD (testing K8S, RKE, EKS, RKE)

Driver: Libvirt

OS: CentOS/Fedora, Debian/Ubuntu

Requirements

• A fresh deployed server with enough RAM and disk space (120GB in RAM and 300GB in disk) and CentOS 8 (it should work also in Fedora/Debian/Ubuntu hosts).
• We assume that the hypervisor node is called nyctea (defined in the inventory).
• Have root passwordless access with certificates.
• Adjust the inventory file to suit your needs i.e. the worker nodes you will need in your cluster.

How to run

There are two ways of launching Kubeinit, directly using the ansible-playbook command, or by running it inside a container.

Directly executing the deployment playbook

The following example command will deploy a multi-master OKD 4.5 cluster with 1 worker node in a single command and in approximately 30 minutes.

git clone https://github.com/Kubeinit/kubeinit.git
cd kubeinit
# Install Ansible collection requirements
ansible-galaxy collection install --force -r kubeinit/requirements.yml
ansible-playbook \
    --user root \
    -v -i ./hosts/okd/inventory \
    --become \
    --become-user root \
    ./playbooks/okd.yml

After provisioning any of the scenarios, you should have your environment ready to go. To connect to the nodes from the hypervisor use the IP addresses from the inventory files.

Running the deployment command from a container

The whole process is explained in the HowTo's. The following commands build a container image with the project inside of it, and then launches the container executing the ansible-playbook command with all the standard ansible-playbook parameters.

Running from the GIT repository

git clone https://github.com/Kubeinit/kubeinit.git
cd kubeinit
podman build -t kubeinit/kubeinit .

podman run --rm -it \
    -v ~/.ssh/id_rsa:/root/.ssh/id_rsa:z \
    -v /etc/hosts:/etc/hosts \
    kubeinit/kubeinit \
        --user root \
        -v -i ./hosts/okd/inventory \
        --become \
        --become-user root \
        ./playbooks/okd.yml

Running from a release

# Get latest release tag name
TAG=$(curl --silent "https://api.github.com/repos/kubeinit/kubeinit/releases/latest" | jq -r .tag_name)
podman run --rm -it \
    -v ~/.ssh/id_rsa:/root/.ssh/id_rsa:z \
    -v /etc/hosts:/etc/hosts \
    quay.io/kubeinit/kubeinit:$TAG \
        --user root \
        -v -i ./hosts/okd/inventory \
        --become \
        --become-user root \
        ./playbooks/okd.yml

HowTo's and presentations

• The easiest and fastest way to deploy an OKD 4.5 cluster in a Libvirt/KVM Host.
• KubeInit external access for OpenShift/OKD deployments with Libvirt.
• Deploying KubeInit from a container.
• KubeInit: Bringing good practices from the OpenStack ecosystem to improve the way OKD/OpenShift deploys, slides.
• Persistent Volumes And Claims In KubeInit
• Deploying Multiple KubeInit Clusters In The Same Hypervisor
• KubeInit 4-In-1 - Deploying Multiple Kubernetes Distributions (K8S, OKD, RKE, And CDK) With The Same Platform