脚本宝典收集整理的这篇文章主要介绍了K8S多节点布置(接上篇单节点),脚本宝典觉得挺不错的,现在分享给大家,也给大家做个参考。
接上篇博客
master02 192.168.80.14
负载均衡器1:192.168.80.15
负载均衡器1:192.168.80.16
VIP :192.168.80.100
#从master01节点上拷贝证书文件、各master组件的配置文件和服务管理文件到master02节点
scp -r /opt/etcd/ root@192.168.80.14:/opt/
scp -r /opt/kubernetes/ root@192.168.80.14:/opt/
scp /usr/lib/systemd/system/{kube-apiserver,kube-controller-manager,kube-scheduler}.service root@192.168.80.14:/usr/lib/systemd/system/
#修改配置文件kube-apiserver中的IP
vim /opt/kubernetes/CFg/kube-apiserver
--bind-address=192.168.80.14 #修改
--advertise-address=192.168.80.14
#在master02节点上启动各服务并设置开机自启
systemctl enable --now kube-apiserver.service kube-controller-manager.service kube-scheduler.service
#查看node节点状态
ln -s /opt/kubernetes/bin/* /usr/local/bin/
kubectl get nodes
kubectl geet nodes -o wide #-o wide:输出额外信息,对于pod,将输出pod所在的node名
#此时在master02节点查到的node节点状态仅是从etcd查询到的信息,而此时node节点实际上并未与master02节点建立通信连接,因此需要使用一个VIP把node节点与master节点都关联起来
cat > /etc/yum.repos.d/nginx.repo << 'EOF'
[nginx]
name=nginx repo
baseurl=http://nginx.org/packages/centos/7/$baseArch/
gpgcheck=0
EOF
yum install nginx -y
vim /etc/nginx/nginx.conf
events {
worker_connections 1024;
}
#添加
stream {
LOG_format main '$remote_addr $upstream_addr - [$time_local] $status $upstream_bytes_sent';
access_log /VAR/log/nginx/k8s-access.log main;
upstream k8s-apiserver {
server 192.168.80.11:6443;
server 192.168.80.14:6443;
}
server {
listen 6443;
Proxy_pass k8s-apiserver;
}
}
http {
......
nginx -t
systemctl enable --now nginx
netstat -natp | grep nginx
scp /etc/nginx/nginx.conf root@192.168.80.16:/etc/nginx/nginx.conf
yum install keepalived -y
vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
# 接收邮件地址
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
# 邮件发送地址
notification_email_From Alexandre.Cassen@firewall.loc
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id NGINX_MASTER #lb01节点的为 NGINX_MASTER,lb02节点的为 NGINX_BACKUP
}
#添加一个周期性执行的脚本
vrrp_script check_nginx {
script "/etc/nginx/check_nginx.sh" #指定检查nginx存活的脚本路径
}
vrrp_instance VI_1 {
state MASTER #lb01节点的为 MASTER,lb02节点的为 BACKUP
interface ens33 #指定网卡名称 ens33
virtual_router_id 51 #指定vrid,两个节点要一致
PRiorITy 100 #lb01节点的为 100,lb02节点的为 90
advert_int 1
authentication {
auth_tyPE PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.80.100/24 #指定 VIP
}
track_script {
check_nginx #指定vrrp_script配置的脚本
}
}
vim /etc/nginx/check_nginx.sh
#!/bin/bash
#egrep -cv "grep|$$" 用于过滤掉包含grep 或者 $$ 表示的当前Shell进程ID
count=$(ps -ef | grep nginx | egrep -cv "grep|$$")
if [ "$count" -eq 0 ];then
systemctl stop keepalived
fi
chmod +x /etc/nginx/check_nginx.sh
scp check_nginx.sh keepalived.conf root@192.168.80.16:`pwd`
systemctl start keepalived
systemctl enable keepalived
ip a
cd /opt/kubernetes/cfg/
vim bootstrap.kubeconfig
server: https://192.168.80.100:6443
vim kubelet.kubeconfig
server: https://192.168.80.100:6443
vim kube-proxy.kubeconfig
server: https://192.168.80.100:6443
//重启kubelet和kube-proxy服务
systemctl restart kubelet.service
systemctl restart kube-proxy.service
#master01上创建
kubectl create deploy nginx-text --image=nginx
#master02上创建
kubectl create deploy nginx-master2 --image=nginx
curl 172.17.72.2
kubectl logs nginx-text-78cc774878-4wv7n
kubectl create clusterrolebinding cluster-system-anonymous --clusterrole=cluster-admin --user=system:anonymous
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