1. 环境准备
准备三台干净(未安装过k8s环境)的虚拟机
# 所有的主机都要配置主机名和域名映射
# 设置主机名
hostnamectl set-hostname k8s-master01 # vim /etc/hosts
192.168.59.201 k8s-master01
192.168.59.202 k8s-worker01
192.168.59.203 k8s-worker02
192.168.59.204 k8s-worker03
2.安装sealos
官方文档:https://sealos.io/zh-Hans/docs/self-hosting/lifecycle-management/quick-start/deploy-kubernetes
下载地址:https://github.com/labring/sealos/releases
# 安装环境:centos7
# 下载sealos
wget https://github.com/labring/sealos/releases/download/v4.3.7/sealos_4.3.7_linux_amd64.rpm
#安装sealos
yum install sealos_4.3.7_linux_amd64.rpm
3. 安装kubernetes集群
官方文档:https://sealos.io/zh-Hans/docs/self-hosting/lifecycle-management/quick-start/deploy-kubernetes
安装方式一
# 安装kubernetes集群
sealos run labring/kubernetes:v1.27.5 labring/helm:v3.12.3 labring/calico:3.26.1 \
--masters 192.168.59.201 \
--nodes 192.168.59.202,192.168.59.203,192.168.59.204 -p [your-ssh-passwd] # 国内仓库
sealos run registry.cn-shanghai.aliyuncs.com/labring/kubernetes:v1.27.5 registry.cn-shanghai.aliyuncs.com/labring/helm:v3.12.3 registry.cn-shanghai.aliyuncs.com/labring/calico:3.26.1 \
--masters 192.168.59.201 \
--nodes 192.168.59.202,192.168.59.203,192.168.59.204 -p [your-ssh-passwd]
注意:labring/helm 应当在 labring/calico 之前。
参数说明:
参数名 | 参数值示例 | 参数说明 |
---|---|---|
–masters | 192.168.0.2 | kubernetes master 节点地址列表 |
–nodes | 192.168.0.3 | kubernetes node 节点地址列表 |
–ssh-passwd | [your-ssh-passwd] | ssh 登录密码 |
kubernetes | labring/kubernetes:v1.25.0 | kubernetes 镜像 |
在干净的服务器上直接执行上面命令,不要做任何多余操作即可启动一个高可用的 kubernetes 集群。
安装成功后输出如下内容:
验证k8s是否安装成功
安装方式二
# 生成配置文件
sealos gen labring/kubernetes:v1.27.5 labring/helm:v3.12.3 labring/calico:3.26.1 \ labring/cert-manager:v1.12.3 labring/openebs:v3.7.0 \
--masters 192.168.65.130 \
--nodes 192.168.65.140,192.168.65.141,192.168.65.142 -p root > Clusterfile # 执行配置文件
sealos apply -f Clusterfile
安装其他组件
sealos run labring/openebs:v3.7.0
sealos run labring/cert-manager:v1.12.3
sealos run labring/minio-operator:v4.5.5 labring/ingress-nginx:v1.8.1 \
labring/mysql-operator:8.0.27-18.1 labring/redis-operator:v1.2.4
增加节点
增加 node 节点:
$ sealos add --nodes 192.168.59.205,192.168.59.206
增加 master 节点:
$ sealos add --masters 192.168.59.207,192.168.59.208
删除节点
删除 node 节点:
$ sealos delete --nodes 192.168.59.205,192.168.59.206
删除 master 节点:
$ sealos delete --masters 192.168.59.207,192.168.59.208
清理集群
$ sealos reset