centos7安装nacos集群

nacos的集群，需要后端的nginx代理，nginx需要做高可用，安装keepalived做vip，mysql需要做主从配置

 nginx与keepalied的安装，

yum -y install nginx keepalived

keepalied的配置

在主的配置

[root@lb01 keepalived]# ls
keepalived.conf keepalived.conf.bak keepalived.conf.bak01 nginx_check.sh

yunwei01-[root@yunwei01 keepalived]# cat keepalived.conf
global_defs {
router_id nginx_001
}

vrrp_script chk_nginx {
script "/etc/keepalived/nginx_check.sh"
interval 2
weight -20
}

vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 101
unicast_src_ip 192.168.174.174
unicast_peer {
192.168.174.90
}
priority 250
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.174.254
}
track_script {
chk_nginx
}
}

[root@lb01 keepalived]# cat nginx_check.sh
#!/bin/bash
A=`ps -C nginx --no-header | wc -l`
if [ $A -eq 0 ];then
systemctl start nginx #尝试重新启动nginx
sleep 2 #睡眠2秒
if [ `ps -C nginx --no-header | wc -l` -eq 0 ];then
#killall keepalived #启动失败，将keepalived服务杀死。将vip漂移到其它备份节点
systemctl stop keepalived #启动失败，将keepalived服务杀死。将vip漂移到其它备份节点
fi
fi

 

在备节点

[root@lb02 keepalived]# cat keepalived.conf
global_defs {
router_id nginx_001
}

vrrp_script chk_nginx {
script "/etc/keepalived/nginx_check.sh"
interval 2
weight -20
}

vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 101
unicast_src_ip 192.168.174.90
unicast_peer {
192.168.174.174
}
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.174.254
}
track_script {
chk_nginx
}
}

[root@lb02 keepalived]# cat nginx_check.sh
#!/bin/bash
A=`ps -C nginx --no-header | wc -l`
if [ $A -eq 0 ];then
systemctl start nginx #尝试重新启动nginx
sleep 2 #睡眠2秒
if [ `ps -C nginx --no-header | wc -l` -eq 0 ];then
#killall keepalived #启动失败，将keepalived服务杀死。将vip漂移到其它备份节点
systemctl stop keepalived #启动失败，将keepalived服务杀死。将vip漂移到其它备份节点
fi
fi

启动服务

systemctl restart keepalived

systemctl enable keepalived

 

主和备的nginx都配置

[root@lb02 conf.d]# cat tps-nacos.conf
upstream nacos{
server 192.168.174.87:8848;
server 192.168.174.88:8848;
server 192.168.174.99:8848;
}
server {
listen 8080;
server_name localhost;
index index.html;
location /{
proxy_pass http://nacos;
}
}

 

启动nginx

systemctl restart nginx

systemctl enable nginx

 

naocs的安装请见博客的https://www.cnblogs.com/hao-guo/p/12673841.html

mysql的安装和主从的配置https://www.cnblogs.com/hao-guo/p/12557408.html，https://www.cnblogs.com/hao-guo/p/12780169.html

不过naocs都要的cluster.conf需要配置

192.168.174.87:8848
192.168.174.88:8848
192.168.174.99:8848

 

导入sql文件后，直接访问http://192.168.174.254:8080/nacos/,