Centos 7.6 使用 kubekey 部署 kubesphere v3.1.0

文章目录

- 主要功能
- 硬件要求
- Kubernetes版本要求
- - 配置主机之间的免密
  - 安装所需依赖
  - 下载KubeKey
- 创建Kubernetes集群以及KubeSphere
- - kk命令使用方式
  - 修改配置文件
  - 开始部署
  - 关于一些会出现的报错，以及解决方法
  - 集群验证

启用可插拔组件
可以先部署最小化的机器，然后在web页面开启自定义的插件

# ./kk create config

apiVersion: kubekey.kubesphere.io/v1alpha1
kind: Cluster
metadata:
  name: sample
spec:
  hosts:
  - {name: node1, address: 172.16.0.2, internalAddress: 172.16.0.2, user: ubuntu, password: Qcloud@123}
  - {name: node2, address: 172.16.0.3, internalAddress: 172.16.0.3, user: ubuntu, password: Qcloud@123}
  roleGroups:
    etcd:
    - node1
    master:
    - node1
    worker:
    - node1
    - node2
  controlPlaneEndpoint:
    domain: lb.kubesphere.local
    address: ""
    port: 6443
  kubernetes:
    version: v1.19.8
    imageRepo: kubesphere
    clusterName: cluster.local
  network:
    plugin: calico
    kubePodsCIDR: 10.233.64.0/18
    kubeServiceCIDR: 10.233.0.0/18
  registry:
    registryMirrors: []
    insecureRegistries: []
  addons: []

创建集群

# ./kk create cluster -h
      -f, --filename string      Path to a configuration file
      --with-kubernetes string   Specify a supported version of kubernetes (default "v1.19.8")
      --with-kubesphere          Deploy a specific version of kubesphere (default v3.1.0)

只取了几条参数，其他的，可以自己查看

-f, --filename：指定配置文件进行部署

--with-kubernetes：指定部署的kubernetes版本，不指定版本，默认安装1.19.8版本

--with-kubesphere：指定部署的kubesphere版本，不指定版本，默认安装3.1.0版本

如果执行./kk create cluster --with-kubesphere 则会安装默认的Kubernetes集群和KubeSphere服务

修改配置文件

apiVersion: kubekey.kubesphere.io/v1alpha1
kind: Cluster
metadata:
  name: sample
spec:
  hosts:
  - {name: k8s-node1, address: 192.168.72.77, internalAddress: 192.168.72.77, user: root, password: 123.com}
  - {name: k8s-node2, address: 192.168.72.78, internalAddress: 192.168.72.78, user: root, password: 123.com}
  - {name: k8s-node3, address: 192.168.72.79, internalAddress: 192.168.72.79, user: root, password: 123.com}
  roleGroups:
    etcd:
    - k8s-node1
    master:
    - k8s-node1
    worker:
    - k8s-node1
    - k8s-node2
    - k8s-node3
  controlPlaneEndpoint:
    domain: lb.kubesphere.local
    #address: "192.168.72.77"
    address: ""
    port: 6443
  kubernetes:
    version: v1.20.4
    imageRepo: kubesphere
    clusterName: cluster.local
  network:
    plugin: calico
    kubePodsCIDR: 10.233.64.0/18
    kubeServiceCIDR: 10.233.0.0/18
  registry:
    registryMirrors: []
    insecureRegistries: []
  addons: []

k8s-node1自行设定，设定后，这个将会变成主机名

开始部署

# ./kk create cluster --with-kubernetes v1.20.4 --with-kubesphere v3.1.0 -f config-sample.yaml -y

name	sudo	curl	openssl	ebtables	socat	ipset	conntrack	docker	nfs client	ceph client	glusterfs client	time
localhost.localdomain.cluster.local	y	y	y	y	y	y	y					CST 23:44:43

以上是KubeSphere依赖的服务，如果在现有的Kubernetes集群上部署KubeSphere，需要有一个持久化（nfs、ceph、glusterfs三个选一个）

kk命令是以Kubeadm的形式安装的Kubernetes集群

如果是内网服务器，要先把所需的镜像都下载好，还需要提前安装好docker，然后加上--skip-pull-images参数，就不会去网络上拉取镜像了

使用KubeKey部署Kubernetes集群，需要用到如下镜像，版本自己根据实际所需去修改：

registry.cn-beijing.aliyuncs.com/kubesphereio/kube-proxy:v1.20.4
registry.cn-beijing.aliyuncs.com/kubesphereio/kube-apiserver:v1.20.4
registry.cn-beijing.aliyuncs.com/kubesphereio/kube-controller-manager:v1.20.4
registry.cn-beijing.aliyuncs.com/kubesphereio/kube-scheduler:v1.20.4
registry.cn-beijing.aliyuncs.com/kubesphereio/node:v3.16.3
registry.cn-beijing.aliyuncs.com/kubesphereio/pod2daemon-flexvol:v3.16.3
registry.cn-beijing.aliyuncs.com/kubesphereio/cni:v3.16.3
registry.cn-beijing.aliyuncs.com/kubesphereio/kube-controllers:v3.16.3
registry.cn-beijing.aliyuncs.com/kubesphereio/etcd:v3.4.13
registry.cn-beijing.aliyuncs.com/kubesphereio/k8s-dns-node-cache:1.15.12
registry.cn-beijing.aliyuncs.com/kubesphereio/coredns:1.6.9
registry.cn-beijing.aliyuncs.com/kubesphereio/pause:3.2

关于一些会出现的报错，以及解决方法

如果一直有报错：The connection to the server localhost:8080 was refused - did you specify the right host or port?: Process exited with status 1

可以尝试下面的命令，清除集群，重新创建集群

# ./kk delete cluster -f config-sample.yaml

如果镜像已经下载好了才报错的，清除集群后，再次创建集群即可

# ./kk create cluster --with-kubernetes v1.20.4 --with-kubesphere v3.1.0 -f config-sample.yaml -y

如果看到这个报错，就看一下，是不是报错的节点，缺少依赖

Failed to join node: interrupted by error

到所有节点，再次执行下面的这个命令，确保返回Nothing to do

# yum install -y socat conntrack ebtables ipset

集群验证

看到这个，表示Kubernetes集群已经部署完成了，这里在部署KubeSphere，需要等待一会，时间会稍微有点久

Please wait for the installation to complete:  >>--->

看到这个，表示KubeSphere以及部署完成了

访问：http://192.168.72.77:30880

用户名：admin

密码：P@88w0rd

第一次登录，会提示修改密码

#####################################################
###              Welcome to KubeSphere!           ###
#####################################################

Console: http://192.168.72.77:30880
Account: admin
Password: P@88w0rd

NOTES：
  1. After you log into the console, please check the
     monitoring status of service components in
     "Cluster Management". If any service is not
     ready, please wait patiently until all components
     are up and running.
  2. Please change the default password after login.

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https://kubesphere.io             2021-05-09 22:23:47
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