kubefed环境搭建

kubefed客户端安装

下载地址:https://github.com/kubernetes-sigs/kubefed/releases/tag/v0.2.0-alpha.1

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curl -LO https://github.com/kubernetes-sigs/kubefed/releases/download/v0.2.0-alpha.1/kubefedctl-0.2.0-alpha.1-linux-amd64.tgz
tar -zxvf kubefedctl-*.tgz
chmod u+x kubefedctl
sudo mv kubefedctl /usr/local/bin/ # make sure the location is in the PATH

使用helm安装kubefed控制面服务

  1. 下载并安装helm命令行
  2. 初始化:

helm init –client-only
https://kubernetes-charts.storage.googleapis.com 网络不通,需要手动创建$HOME/.helm/repository目录下把helm的repositories.yaml文件新建即可,参考wiki:Helm 基本使用

helm repo add kubefed-charts https://raw.githubusercontent.com/kubernetes-sigs/kubefed/master/charts

helm repo list 能看到已添加的库

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[root@vm192-168-0-203 cache]# helm repo list
NAME URL
stable https://kubernetes-charts.storage.googleapis.com
hub https://hub.kce.ksyun.com/chartrepo/zhaoqi
kubefed-charts https://raw.githubusercontent.com/kubernetes-sigs/kubefed/master/charts

helm search kubefed 查询kubefed chart包

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[root@vm192-168-0-203 cache]# helm search kubefed
WARNING: Repo "stable" is corrupt or missing. Try 'helm repo update'.
NAME CHART VERSION APP VERSION DESCRIPTION
kubefed-charts/kubefed 0.2.0-alpha.1 KubeFed helm chart
kubefed-charts/federation-v2 0.0.10 Kubernetes Federation V2 helm chart

helm install kubefed-charts/kubefed –name kubefed –version 0.2.0-alpha.1 –namespace kube-federation-system

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[root@vm192-168-0-203 cache]# kubectl get crd | grep kubefed
clusterpropagatedversions.core.kubefed.io 2020-04-27T09:05:34Z
dnsendpoints.multiclusterdns.kubefed.io 2020-04-27T09:05:34Z
domains.multiclusterdns.kubefed.io 2020-04-27T09:05:34Z
federatedclusterroles.types.kubefed.io 2020-04-27T09:05:34Z
federatedconfigmaps.types.kubefed.io 2020-04-27T09:05:34Z
federateddeployments.types.kubefed.io 2020-04-27T09:05:34Z
federatedingresses.types.kubefed.io 2020-04-27T09:05:34Z
federatedjobs.types.kubefed.io 2020-04-27T09:05:34Z
federatednamespaces.types.kubefed.io 2020-04-27T09:05:34Z
federatedreplicasets.types.kubefed.io 2020-04-27T09:05:34Z
federatedsecrets.types.kubefed.io 2020-04-27T09:05:34Z
federatedserviceaccounts.types.kubefed.io 2020-04-27T09:05:34Z
federatedservices.types.kubefed.io 2020-04-27T09:05:34Z
federatedservicestatuses.core.kubefed.io 2020-04-27T09:05:34Z
federatedtypeconfigs.core.kubefed.io 2020-04-27T09:05:34Z
ingressdnsrecords.multiclusterdns.kubefed.io 2020-04-27T09:05:34Z
kubefedclusters.core.kubefed.io 2020-04-27T09:05:34Z
kubefedconfigs.core.kubefed.io 2020-04-27T09:05:34Z
propagatedversions.core.kubefed.io 2020-04-27T09:05:34Z
replicaschedulingpreferences.scheduling.kubefed.io 2020-04-27T09:05:34Z
servicednsrecords.multiclusterdns.kubefed.io 2020-04-27T09:05:34Z
[root@vm192-168-0-203 cache]# kubectl get deploy -n kube-federation-system
NAME READY UP-TO-DATE AVAILABLE AGE
kubefed-admission-webhook 1/1 1 1 69m
kubefed-controller-manager 2/2 2 2 69m

将两个集群加入联邦

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[root@vm192-168-0-203 ~]# kubefedctl join --cluster-context context-1580a941-b081-4663-a998-4426ea561192 cluster1 --host-cluster-context context-1580a941-b081-4663-a998-4426ea561192
[root@vm192-168-0-203 ~]# kubefedctl join --cluster-context context-1580a941-b081-4663-a998-4426ea561192 cluster2 --host-cluster-context context-1580a941-b081-4663-a998-4426ea561192
[root@vm192-168-0-203 ~]# kubectl get kubefedcluster -n kube-federation-system
NAME AGE READY
cluster1 4h True
cluster2 1s True

联邦化的资源类型

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[root@vm192-168-0-203 kubefed]# kubectl get FederatedTypeConfig -n kube-federation-system
NAME AGE
clusterroles.rbac.authorization.k8s.io 1d
configmaps 1d
customresourcedefinitions.apiextensions.k8s.io 5h
deployments.apps 1d
ingresses.extensions 1d
jobs.batch 3h
namespaces 1d
replicasets.apps 1d
secrets 1d
serviceaccounts 1d
services 1d

可以使用kubefedctl disable / enable 联邦化某种资源,包括crd资源类型

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[root@vm192-168-0-203 kubefed]# kubefedctl disable job
Disabled propagation for FederatedTypeConfig "kube-federation-system/jobs.batch"
Verifying propagation controller is stopped for FederatedTypeConfig "kube-federation-system/jobs.batch"
Propagation controller for FederatedTypeConfig "kube-federation-system/jobs.batch" is stopped
federatedtypeconfig "kube-federation-system/jobs.batch" deleted
[root@vm192-168-0-203 kubefed]# kubefedctl enable job
customresourcedefinition.apiextensions.k8s.io/federatedjobs.types.kubefed.io updated
federatedtypeconfig.core.kubefed.io/jobs.batch created in namespace kube-federation-system