Kubernetes

Kubernetes without the features I don't care about.

Some of the removed features

OpenAPI/Swagger
cloud-controller-manager
kube aggregation
APIs (NOTE: most of these are old APIs that have been replaced)
- admissionregistration/v1alpha1
- authentication/v1beta1
- authorization/v1beta1
- certificates/v1beta1
- events/v1beta1
- imagepolicy/v1alpha1
- rbac/v1alpha1
- rbac/v1beta1
- settings/v1alpha1
- storage/v1alpha1
Authentication
- bootstrap token
- oidc
- webhook
Authorization
- ABAC
Cloud Providers (all of them)
Controllers
- Bootstrap
- Certificates
- Cloud
- Cluster Role Aggregation
- Cloud based node IPAM
- Replication
- Route
Credential Providers AWS/GCP/Azure/Rancher
Kubelet
- Device Plugin
- Certificates
- Checkpoint
- Device Manager
- Custom Metrics
- Dockershim
- GPU
- Mount Pod
- Network
  - Hairpin
  - Kubenet
- rkt
Volume Drivers
- aws_ebs
- azure_dd
- azure_file
- cephfs
- cinder
- fc
- flocker
- gce_pd
- glusterfs
- iscsi
- photon_pd
- portworx
- quobyte
- rbd
- scaleio
- storageos
- vsphere_volume
Admission Controllers
- admin
- alwayspullimages
- antiaffinity
- defaulttolerationseconds
- deny
- eventratelimit
- exec
- extendedresourcetoleration
- gc
- imagepolicy
- initialreosurces
- limitranger
- namespace
- noderestriction
- persistentvolume
- podnodeselector
- podpreset
- podtolerationrestriction
- priority
- resourcequota
- security
- securitycontext
- storageobjectinuseprotection
etcd (yeah, i'm using sqlite3)

Build

# First have sane GOPATH, hopefully you know how to do that
go build -o k3s
go build -o kubectl ./cmd/kubectl

Run

Run containerd

# Download and install containerd and runc
sudo curl -fL -o /usr/local/bin/runc https://github.com/opencontainers/runc/releases/download/v1.0.0-rc5/runc.amd64
sudo chmod +x /usr/local/bin/runc

curl -fsL https://github.com/containerd/containerd/releases/download/v1.1.1/containerd-1.1.1.linux-amd64.tar.gz | sudo tar xvf /usr/src/containerd.tgz -C /usr/local/bin bin/ --strip-components=1

# Some CNI
sudo mkdir -p /opt/cni/bin
curl -fsL https://github.com/containernetworking/plugins/releases/download/v0.7.1/cni-plugins-amd64-v0.7.1.tgz  | sudo tar xvzf - -C /opt/cni/bin ./loopback

sudo containerd &

Run Kubernetes

# Server
./k3s

# Agent (If doing this on another host copy the ./data folder)
sudo ./k3s agent

# Install Networking
export KUBECONFIG=./data/cred/kubeconfig.yaml
curl -s "https://cloud.weave.works/k8s/net?k8s-version=$(./kubectl version | base64 | tr -d '\n')" | sed 's!rbac.authorization.k8s.io/v1beta1!rbac.authorization.k8s.io/v1!g' | ./kubectl apply -f -

Your kubeconfig file is in ./data/cred/kubeconfig.yaml

Enjoy.