环境：centos 6.8
注：此处省略对于各服务器的IP配置。
一：图示讲解
用户访问vip，通过haproxy代理得到服务器的资源。此架构下基于keepalived对haproxy做负载均衡（此种两种软件装在同一台服务器），基于haproxy对Nginx和apache做负载均衡，Nginx和Apache使用共享存储NFS和mysql。
二：配置讲解
第一步：配置mysql和nfs
# 配置Mysql服务 [root@mysql-nfs ~]$ yum -y install mariadb-server [root@mysql-nfs ~]$ systemctl start mariadb [root@mysql-nfs ~]$ mysql MariaDB [(none)]> CREATE DATABASE wpdb; MariaDB [(none)]> GRANT ALL ON wpdb.* TO wpuser@'192.168.%.%' IDENTIFIED BY 'wppass'; MariaDB [(none)]> # 配置NFS服务 [root@mysql-nfs ~]$ useradd -r -u 88 apache [root@mysql-nfs ~]$ mkdir -p -v /data/www [root@mysql-nfs ~]$ chown apache.apache /data/www [root@mysql-nfs ~]$ yum -y install nfs-utils [root@mysql-nfs ~]$ cat > /etc/exports.d/web_data.exports << EOF /data/www/ 192.168.37.0/16(rw,all_squash,anonuid=88,anongid=88) EOF [root@mysql-nfs ~]$ systemctl start rpcbind [root@mysql-nfs ~]$ systemctl start rpcidmapd [root@mysql-nfs ~]$ systemctl start nfs # 测试NFS服务 [root@mysql-nfs ~]$ showmount -e 127.0.0.1 Export list for 127.0.0.1: /data/www 192.168.37.0/16
第二步：配置Nginx和apache
# 配置apache1服务器 [root@lap1 ~]$ useradd -r -u 88 apache [root@lap1 ~]$ yum -y install nfs-utils httpd php php-mysql [root@lap1 ~]$ mount -t nfs 192.168.37.144:/data/www /var/www/html/ [root@lap1 ~]$ wget https://cn.wordpress.org/wordpress-4.7.4-zh_CN.zip [root@lap1 ~]$unzip wordpress-4.7.4-zh_CN.zip [root@lap1 ~]$cp wordpress/ /var/www/html [root@lap1 ~]$ service httpd restart [root@lap2 ~]$ ls /var/www/html/ wordpress # 配置apache2服务器 [root@lap1 ~]$ useradd -r -u 88 apache [root@lap1 ~]$ yum -y install nfs-utils httpd php php-mysql [root@lap1 ~]$ mount -t nfs 192.168.37.144:/data/www /var/www/html/ [root@lap1 ~]$ service httpd restart [root@lap1 ~]$ ls /var/www/html/ wordpress
# 配置Nginx1服务器 [root@nginx1 ~]$ yum -y install nfs-utils nginx [root@nginx1 ~]$ mount -t nfs 192.168.37.144:/data/www /usr/share/nginx/html/ [root@nginx1 ~]$ service httpd restart [root@nginx1 ~]$ ls /usr/share/nginx/html/ wordpress # 配置Nginx2服务器 [root@nginx1 ~]$ yum -y install nfs-utils nginx [root@nginx1 ~]$ mount -t nfs 192.168.37.144:/data/www /usr/share/nginx/html/ [root@nginx1 ~]$ service httpd restart [root@nginx1 ~]$ ls /usr/share/nginx/html/ wordpress
第三步：配置Keepalived和Haproxy
# 配置HAproxy1服务器
## 安装相关程序包
[root@haproxy1 ~]$ yum -y install haproxy keepalived psmisc
## 为haproxy提供配置文件
[root@haproxy1 ~]$ cp /etc/haproxy/haproxy.cfg{,.bak}
[root@haproxy1 ~]$ cat > /etc/haproxy/haproxy.cfg << EOF
global
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
daemon
stats socket /var/lib/haproxy/stats
defaults
mode http
log global
option httplog
option dontlognull
option http-server-close
option forwardfor except 127.0.0.0/8
option redispatch
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
maxconn 3000
frontend Test *:80
stats enable
stats uri /stats
acl url_static path_end -i .jpg .gif .png .css .js .svg
rspidel Server.*
rspadd Server:\ CNC
use_backend web if url_static
default_backend php
backend php
balance roundrobin
server ap1 192.168.37.138:80 check
server ap1 192.168.37.129:80 check
backend web
balance roundrobin
server nginx1 192.168.37.135:80 check
server nginx2 192.168.37.134:80 check
EOF
## 为keepalived提供配置文件
[root@haproxy1 ~]$ cp /etc/keepalived/keepalived.conf{,.bak}
[root@haproxy1 ~]$ cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived
global_defs {
router_id haproxy1
vrrp_mcast_group4 224.0.128.100
}
vrrp_script check_haproxy {
script "killall -0 haproxy && exit 0 || exit 1"
interval 1
weigth -5
}
vrrp_script check_down {
script "[ -f /etc/keepalived/down ] && exit 1 || exit 0"
interval 1
weigth -5
}
vrrp_instance Haproxy_VIP {
state MASTER
interface eth1
virtual_router_id 66
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 11111
}
virtual_ipaddress {
172.18.32.232/16 dev eth1 label eth1:1
}
track_script {
check_haproxy
check_down
}
}
EOF
## 启动haproxy、keepalived服务
[root@haproxy1 ~]$ systemctl start haproxy
[root@haproxy1 ~]$ systemctl start keepalived
# 配置HAproxy2服务器
## 安装相关程序包
[root@haproxy1 ~]$ yum -y install haproxy keepalived psmisc
## 为haproxy提供配置文件
[root@haproxy1 ~]$ cp /etc/haproxy/haproxy.cfg{,.bak}
[root@haproxy1 ~]$ cat > /etc/haproxy/haproxy.cfg << EOF
global
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
daemon
stats socket /var/lib/haproxy/stats
defaults
mode http
log global
option httplog
option dontlognull
option http-server-close
option forwardfor except 127.0.0.0/8
option redispatch
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 10s
timeout check 10s
maxconn 3000
frontend Test *:80
stats enable
stats uri /stats
acl url_static path_end -i .jpg .gif .png .css .js .svg
rspidel Server.*
rspadd Server:\ CNC
use_backend web if url_static
default_backend php
backend php
balance roundrobin
server ap1 192.168.37.138:80 check
server ap1 192.168.37.129:80 check
backend web
balance roundrobin
server nginx1 192.168.37.135:80 check
server nginx2 192.168.37.134:80 check
EOF
## 为keepalived提供配置文件
[root@haproxy1 ~]$ cp /etc/keepalived/keepalived.conf{,.bak}
[root@haproxy1 ~]$ cat > /etc/keepalived/keepalived.conf << EOF
! Configuration File for keepalived
global_defs {
router_id haproxy1
vrrp_mcast_group4 224.0.128.100
}
vrrp_script check_haproxy {
script "killall -0 haproxy && exit 0 || exit 1"
interval 1
weigth -5
}
vrrp_script check_down {
script "[ -f /etc/keepalived/down ] && exit 1 || exit 0"
interval 1
weigth -5
}
vrrp_instance Haproxy_VIP {
state BACKUP
interface eth1
virtual_router_id 66
priority 95
advert_int 1
authentication {
auth_type PASS
auth_pass 11111
}
virtual_ipaddress {
172.18.32.232/16 dev eth1 label eth1:1
}
track_script {
check_haproxy
check_down
}
}
EOF
## 启动haproxy、keepalived服务
[root@haproxy1 ~]$ systemctl start haproxy
[root@haproxy1 ~]$ systemctl start keepalived
三.测试访问
在浏览器访问http://172.18.32.232/wordpress 正常
四.此实验需要注意的地方
1. 配置wordpress时，数据库地址要填mysql服务器地址192.168.37.139
2. 配置wordpress时，要在nfs服务器上切换到apache用户创建在/data/www/目录下创建wp-config.php文件。
ps： 如果大家在实验过程中有任何问题，欢迎随时联系我。VX：504498722
原创文章，作者：cnc，如若转载，请注明出处：http://www.178linux.com/76160
