一、说明
公司当前有一个用TKE搭建的K8s集群，目前遇到的问题：
目前TKE已经基本不更新了
公司内K8s集群所承载了所有项目的测试环境，目前资源已经无法满足一台节点坏
跟现网集群环境不一致，现网是每个项目一个集群
针对上面的问题，经过内部沟通，决定在公司内重新搭建一套多集群K8s环境，为了便于管理，最终选择用Rancher来管理这个多集群的环境，为了解及测试Rancher，前期先用6台虚拟机搭建模拟环境，本文主要讲的就是搭建Rancher测试集群的事情
三、安装系统
安装略
虚拟机IP地址：192.168.16.51
wangjw@wangjw01:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.3 LTS
Release: 22.04
Codename: jammy
四、系统环境配置
修改主机名称
wangjw@wangjw:~$ sudo hostnamectl set-hostname wangjw01
[sudo] password for wangjw:
wangjw@wangjw03:~$ hostname
wangjw01
关闭防火墙
wangjw@wangjw01:~$ sudo systemctl stop ufw.service
wangjw@wangjw01:~$ sudo systemctl disable ufw.service
Synchronizing state of ufw.service with SysV service script with /lib/systemd/systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install disable ufw
Removed /etc/systemd/system/multi-user.target.wants/ufw.service.
wangjw@wangjw01:~$ sudo ufw status
Status: inactive #这个状态说明防火墙关闭了
开启系统路由转发功能
wangjw@wangjw01:~$ sudo vim /etc/sysctl.conf
net.ipv4.ip_forward = 1 #将这一行添加到最后一行，然后保存
wangjw@wangjw01:~$ sudo sysctl -p
net.ipv4.ip_forward = 1
wangjw@wangjw01:~$ sudo sysctl -a | grep "net.ipv4.ip_forward = 1"
net.ipv4.ip_forward = 1
配置源
wangjw@wangjw01:~$ sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
wangjw@wangjw01:~$ sudo vim /etc/apt/sources.list
deb https://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu/ jammy main restricted universe multiverse
deb https://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu/ jammy-security main restricted universe multiverse
deb https://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu/ jammy-updates main restricted universe multiverse
# deb https://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
# deb-src https://mirrors.aliyun.com/ubuntu/ jammy-proposed main restricted universe multiverse
deb https://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
deb-src https://mirrors.aliyun.com/ubuntu/ jammy-backports main restricted universe multiverse
五、安装docker
wangjw@wangjw01:~$ curl https://releases.rancher.com/install-docker/20.10.sh | sh
wangjw@wangjw01:/var/log$ docker --version
Docker version 20.10.24, build 297e128
……
配置镜像加速
wangjw@wangjw01:~$ sudo mkdir -p /etc/docker
wangjw@wangjw01:~$ sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://sx15mtuf.mirror.aliyuncs.com"]
}
EOF
wangjw@wangjw01:~$ sudo systemctl daemon-reload
wangjw@wangjw01:~$ sudo systemctl restart docker
六、安装Rancher2.6.9
sudo docker run -d --restart=unless-stopped --name=rancher -p 80:80 -p 443:443 --privileged rancher/rancher:v2.6.9
wangjw@wangjw01:~$ sudo docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
6cc63abc0241 rancher/rancher:v2.6.9 "entrypoint.sh" 12 seconds ago Up 10 seconds 0.0.0.0:80->80/tcp, :::80->80/tcp, 0.0.0.0:443->443/tcp, :::443->443/tcp rancher
七、访问Rancher
在浏览器访问 https://192.168.16.51/
查看初始密码
wangjw@wangjw01:~$ sudo docker logs 6cc63abc0241 2>&1 | grep "Bootstrap Password:"
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