mirror of
https://github.com/k3s-io/k3s.git
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102 lines
3.3 KiB
Markdown
102 lines
3.3 KiB
Markdown
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# Kubernetes
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<img src="https://github.com/kubernetes/kubernetes/raw/master/logo/logo.png" width="100">
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----
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Kubernetes without the features I don't care about.
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Some of the removed features
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* OpenAPI/Swagger
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* cloud-controller-manager
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* kube aggregation
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* APIs (NOTE: most of these are old APIs that have been replaced)
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* admissionregistration/v1alpha1, authentication/v1beta1, authorization/v1beta1, certificates/v1beta1, events/v1beta1, imagepolicy/v1alpha1, rbac/v1alpha1, settings/v1alpha1, storage/v1alpha1,
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* Authentication
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* bootstrap token, oidc
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* Authorization
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* ABAC
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* All alpha features
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* Cloud Providers (all of them)
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* Controllers
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* Bootstrap
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* Certificates
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* Cloud
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* Cloud based node IPAM
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* Route
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* Credential Providers AWS/GCP/Azure/Rancher
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* Kubelet
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* Device Plugin
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* Certificates
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* Checkpoint
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* Device Manager
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* Custom Metrics
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* Dockershim (IMPORTANT: No docker support, the only runtime that works in containerd)
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* GPU
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* Mount Pod
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* Network
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* Hairpin
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* Kubenet
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* rkt
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* Volume Drivers
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* aws_ebs, azure_dd, azure_file, cephfs, cinder, fc, flocker, gce_pd, glusterfs, iscsi, photon_pd, portworx, quobyte, rbd, scaleio, storageos, vsphere_volume
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* Admission Controllers
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* admin, alwayspullimages, antiaffinity, defaulttolerationseconds, deny, eventratelimit, exec, extendedresourcetoleration, gc, imagepolicy, initialreosurces, limitranger, namespace, noderestriction, persistentvolume, podnodeselector, podpreset, podtolerationrestriction, priority, resourcequota, security, securitycontext, storageobjectinuseprotection
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What is left? A lot. Basically all your normal pod/deployment/service stuff is there. Most apps for kubernetes will run just fine.
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Full Build
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----------
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# Setup your GOPATH. Note that this code should be at k8s.io/kubernetes in your GOPATH, not github.com/ibuildthecloud/k3s
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go build -o kubectl ./cmd/kubectl
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go build -o hyperkube ./cmd/hyperkube
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Now just run hyperkube as you normally would.
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Super Opinionated Approach that probably won't work for you
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-----------------------------------------------------------
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# Setup your GOPATH. Note that this code should be at k8s.io/kubernetes in your GOPATH, not github.com/ibuildthecloud/k3s
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go build -o k3s
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go build -o kubectl ./cmd/kubectl
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Run
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---
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Run containerd
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```bash
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# Download and install containerd and runc
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sudo curl -fL -o /usr/local/bin/runc https://github.com/opencontainers/runc/releases/download/v1.0.0-rc5/runc.amd64
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sudo chmod +x /usr/local/bin/runc
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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
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# Some CNI
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sudo mkdir -p /opt/cni/bin
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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
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sudo containerd &
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```
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Run Kubernetes
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```bash
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# Server
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./k3s
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# Agent (If doing this on another host copy the ./data folder)
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sudo ./k3s agent
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# Install Networking
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export KUBECONFIG=./data/cred/kubeconfig.yaml
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curl -s "https://cloud.weave.works/k8s/net?k8s-version=$(./kubectl version | base64 | tr -d '\n')" | ./kubectl apply -f -
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```
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Your kubeconfig file is in `./data/cred/kubeconfig.yaml`
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Enjoy.
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