mirror of https://github.com/k3s-io/k3s
102 lines
3.3 KiB
Markdown
102 lines
3.3 KiB
Markdown
|
# Kubernetes
|
||
|
|
|
||
|
|
<img src="https://github.com/kubernetes/kubernetes/raw/master/logo/logo.png" width="100">
|
||
|
|
|
||
|
|
----
|
||
|
|
|
||
|
|
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, settings/v1alpha1, storage/v1alpha1,
|
||
|
|
* Authentication
|
||
|
|
* bootstrap token, oidc
|
||
|
|
* Authorization
|
||
|
|
* ABAC
|
||
|
|
* All alpha features
|
||
|
|
* Cloud Providers (all of them)
|
||
|
|
* Controllers
|
||
|
|
* Bootstrap
|
||
|
|
* Certificates
|
||
|
|
* Cloud
|
||
|
|
* Cloud based node IPAM
|
||
|
|
* Route
|
||
|
|
* Credential Providers AWS/GCP/Azure/Rancher
|
||
|
|
* Kubelet
|
||
|
|
* Device Plugin
|
||
|
|
* Certificates
|
||
|
|
* Checkpoint
|
||
|
|
* Device Manager
|
||
|
|
* Custom Metrics
|
||
|
|
* Dockershim (IMPORTANT: No docker support, the only runtime that works in containerd)
|
||
|
|
* 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
|
||
|
|
|
||
|
|
What is left? A lot. Basically all your normal pod/deployment/service stuff is there. Most apps for kubernetes will run just fine.
|
||
|
|
|
||
|
|
Full Build
|
||
|
|
----------
|
||
|
|
|
||
|
|
# Setup your GOPATH. Note that this code should be at k8s.io/kubernetes in your GOPATH, not github.com/ibuildthecloud/k3s
|
||
|
|
go build -o kubectl ./cmd/kubectl
|
||
|
|
go build -o hyperkube ./cmd/hyperkube
|
||
|
|
|
||
|
|
Now just run hyperkube as you normally would.
|
||
|
|
|
||
|
|
|
||
|
|
Super Opinionated Approach that probably won't work for you
|
||
|
|
-----------------------------------------------------------
|
||
|
|
|
||
|
|
# Setup your GOPATH. Note that this code should be at k8s.io/kubernetes in your GOPATH, not github.com/ibuildthecloud/k3s
|
||
|
|
go build -o k3s
|
||
|
|
go build -o kubectl ./cmd/kubectl
|
||
|
|
|
||
|
|
Run
|
||
|
|
---
|
||
|
|
|
||
|
|
Run containerd
|
||
|
|
|
||
|
|
```bash
|
||
|
|
# 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
|
||
|
|
|
||
|
|
```bash
|
||
|
|
# 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')" | ./kubectl apply -f -
|
||
|
|
```
|
||
|
|
|
||
|
|
Your kubeconfig file is in `./data/cred/kubeconfig.yaml`
|
||
|
|
|
||
|
|
Enjoy.
|