# Quick start
# Install a kubernetes cluster
# install Sealer binaries
wget https://github.com/sealerio/sealer/releases/download/v0.8.5/sealer-v0.8.5-linux-amd64.tar.gz && \
tar zxvf sealer-v0.8.5-linux-amd64.tar.gz && mv sealer /usr/bin
# run a kubernetes cluster
sealer run kubernetes:v1.19.8 \
--masters 192.168.0.2,192.168.0.3,192.168.0.4 \
--nodes 192.168.0.5,192.168.0.6,192.168.0.7 --passwd xxx
[root@iZm5e42unzb79kod55hehvZ ~]# kubectl get node
NAME STATUS ROLES AGE VERSION
izm5e42unzb79kod55hehvz Ready master 18h v1.19.8
izm5ehdjw3kru84f0kq7r7z Ready master 18h v1.19.8
izm5ehdjw3kru84f0kq7r8z Ready master 18h v1.19.8
izm5ehdjw3kru84f0kq7r9z Ready <none> 18h v1.19.8
izm5ehdjw3kru84f0kq7raz Ready <none> 18h v1.19.8
izm5ehdjw3kru84f0kq7rbz Ready <none> 18h v1.19.8
# Clean the cluster
Some information of the basic settings will be written to the Clusterfile and stored in /root/.sealer/[cluster-name]/Clusterfile.
sealer delete -f /root/.sealer/my-cluster/Clusterfile
# Build your own CloudImage
For example, build a dashboard CloudImage:
Kubefile:
# base CloudImage contains all the files that run a kubernetes cluster needed.
# 1. kubernetes components like kubectl kubeadm kubelet and apiserver images ...
# 2. docker engine, and a private registry
# 3. config files, yaml, static files, scripts ...
FROM registry.cn-qingdao.aliyuncs.com/sealer-io/kubernetes:v1.19.8
# download kubernetes dashboard yaml file
RUN wget https://raw.githubusercontent.com/kubernetes/dashboard/v2.2.0/aio/deploy/recommended.yaml
# when run this CloudImage, will apply a dashboard manifests
CMD kubectl apply -f recommended.yaml
Build dashboard CloudImage:
sealer build -t registry.cn-qingdao.aliyuncs.com/sealer-io/dashboard:latest .
Run your kubernetes cluster with dashboard:
# sealer will install a kubernetes on host 192.168.0.2 then apply the dashboard manifests
sealer run registry.cn-qingdao.aliyuncs.com/sealer-io/dashboard:latest --masters 192.168.0.2 --passwd xxx
# check the pod
kubectl get pod -A|grep dashboard
# Push the CloudImage to the registry
# you can push the CloudImage to docker hub, Ali ACR, or Harbor
sealer push registry.cn-qingdao.aliyuncs.com/sealer-io/dashboard:latest