标签:fifo proxy glob pst strong pad type cto href
二进制部署K8s集群第9节Master节点之controller-manager集群部署1、本节架构
2、安装Nginx和Keepalived
3、配置Nginx
4、添加监控端口脚本
5、配置keepalived主
6、配置keepalived备
7、启动服务并检查
1、本节架构
2、安装Nginx和Keepalived
以下部署在hdss7-11.host.com及hdss7-12.host.comyum install nginx keepalived -y
3、配置Nginx
cat >> /etc/nginx/nginx.conf <<eof
stream {
upstream kube-apiserver {
server 10.4.7.21:6443 max_fails=3 fail_timeout=30s;
server 10.4.7.22:6443 max_fails=3 fail_timeout=30s;
}
server {
listen 7443;
proxy_connect_timeout 2s;
proxy_timeout 900s;
proxy_pass kube-apiserver;
}
}
eof
nginx -t
由于是基于四层负载均衡,所以stream要放在http段外面
4、添加监控端口脚本
cat > /etc/keepalived/check_port.sh <<‘EOF‘
#!/bin/bash
# keepalived 监控端口脚本
CHK_PORT=$1
if [ -n "$CHK_PORT" ];then
PORT_PROCESS=`ss -lnt|grep $CHK_PORT |wc -l`
if [ $PORT_PROCESS -eq 0 ];then
echo "Port $CHK_PORT Is Not Used,End."
exit 1
fi
else
echo "Check Port Cant Be Empty!"
fi
EOF
chmod +x /etc/keepalived/check_port.sh
5、配置keepalived主
cat > /etc/keepalived/keepalived.conf <<eof
! Configuration File for keepalived
global_defs {
router_id 10.4.7.11
}
vrrp_script chk_nginx {
script "/etc/keepalived/check_port.sh 7443"
interval 2
weight -20
}
vrrp_instance VI_1 {
state MASTER
interface ens33
virtual_router_id 251
priority 100
advert_int 1
mcast_src_ip 10.4.7.11
nopreempt
authentication {
auth_type PASS
auth_pass 11111111
}
track_script {
chk_nginx
}
virtual_ipaddress {
10.4.7.10
}
}
eof
nopreempt非抢占式,即主nginx宕机,备接管vip,主nginx恢复,主vip不会恢复,需重启从keepalived,主vip才会恢复
6、配置keepalived备
cat > /etc/keepalived/keepalived.conf <<eof
! Configuration File for keepalived
global_defs {
router_id 10.4.7.12
}
vrrp_script chk_nginx {
script "/etc/keepalived/check_port.sh 7443"
interval 2
weight -20
}
vrrp_instance VI_1 {
state BACKUP
interface ens33
virtual_router_id 251
mcast_src_ip 10.4.7.12
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 11111111
}
track_script {
chk_nginx
}
virtual_ipaddress {
10.4.7.10
}
}
eof
7、启动服务并检查
systemctl start nginx keepalived
systemctl enable nginx keepalived
systemctl status keepalived
netstat -lntup|grep nginx
tcp 0 0 0.0.0.0:7443 0.0.0.0:* LISTEN 13779/nginx: master
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 13779/nginx: master
tcp6 0 0 :::80 :::* LISTEN 13779/nginx: master
ip addr | tail -8
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:d7:a2:c7 brd ff:ff:ff:ff:ff:ff
inet 10.4.7.11/24 brd 10.4.7.255 scope global noprefixroute ens33
valid_lft forever preferred_lft forever
inet 10.4.7.10/32 scope global ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fed7:a2c7/64 scope link
valid_lft forever preferred_lft forever
下一章:二进制部署K8s集群第11节Node节点之kubelet部署
二进制部署K8s集群第10节Master节点之部署四层反向代理
标签:fifo proxy glob pst strong pad type cto href
原文地址:https://blog.51cto.com/yht1990/2539652