在线安装rancher2.4管理K8S集群并部署服务

news2024/9/20 6:30:48

条件：

1. 准备至少3台机器；
2. 三台机器需要有网络；
3. 安装rancher和K8S集群；

# master节点
[root@localhost ~]# hostnamectl set-hostname k8s-master &&  bash
[root@k8s-master ~]# hostname
k8s-master
[root@k8s-master ~]#  ip add|grep eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    inet 192.168.0.241/24 brd 192.168.0.255 scope global noprefixroute dynamic eth0
[root@k8s-master ~]#

# node1 节点
[root@localhost ~]# hostnamectl set-hostname k8s-node1  &&  bash
[root@k8s-node1 ~]# hostname
k8s-node1
[root@k8s-node1 ~]#  ip add|grep eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    inet 192.168.0.117/24 brd 192.168.0.255 scope global noprefixroute dynamic eth0
[root@k8s-node1 ~]#

# node2 节点
[root@localhost ~]# hostnamectl set-hostname k8s-node2  &&  bash
[root@k8s-node2 ~]# hostname
k8s-node2
[root@k8s-node2 ~]#  ip add|grep eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    inet 192.168.0.3/24 brd 192.168.0.255 scope global noprefixroute dynamic eth0
[root@k8s-node2 ~]#

1. 系统基础优化，全部节点操作

cat >> /etc/hosts << EOF
192.168.0.241 k8s-master
192.168.0.117 k8s-node1
192.168.0.3 k8s-node2
EOF
systemctl stop firewalld && systemctl disable firewalld  # 关闭防火墙
sed -i 's/enforcing/disabled/' /etc/selinux/config  && setenforce 0  #关闭selinux
swapoff -a && sed -i 's/.*swap.*/#&/' /etc/fstab ##关闭swap
##将桥接的IPv4 流量传递到iptables 的链
cat > /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF
sysctl --system # 生效

2.安装docker,所有节点都需要安装

2.1 集群所有节点安装时间同步

curl -fsSL get.docker.com -o get-docker.sh  #下载脚本
sh get-docker.sh #安装docker最新版
systemctl enable docker && systemctl start docker && systemctl status docker
docker --version

2.2 集群所有节点安装docker

mkdir /etc/docker
cat >/etc/docker/daemon.json <<EOF
{
         "registry-mirrors" : ["https://registry.docker-cn.com","http://hub-mirror.c.163.com"],
          "exec-opts": ["native.cgroupdriver=systemd"],
           "insecure-registries":["192.168.0.241:5000"],
           "data-root": "/data/docker"
}
EOF

systemctl restart docker && systemctl status docker

3.安装rancher

#安装rancher服务,192.168.0.241:5000是内网的仓库地址,请修改
docker run -d --restart=unless-stopped --privileged   \
  -p 8080:80 -p 8443:443   \
  -v /opt/rancher:/var/lib/rancher    \
  -v /var/log/rancher/auditlog:/var/log/auditlog    \
  --name rancher2 rancher/rancher:v2.4.17

#稍等几分钟访问服务路径：https://192.168.0.241:8443，现场请访问对应的路径，就可以看到rancher2.4的页面