CentOS 7.4+keepalived+haproxy+mariadb实现wordpress的动静分离
| 主机名 | IP地址 | VIP | 服务名 | 实验环境 |
| KA_HA_01 | ens33:192.168.30.130(NAT) ens36:192.168.0.130(VMnet4) | 192.168.30.100 | keepalived、haproxy、 | CentOS Linux release 7.4.1708 (Core)、 SELINUX=disabled、 systemctl stop firewalld; |
| KA_HA_02 | ens33:192.168.30.131(NAT) ens36:192.168.0.131(VMnet4) | |||
| Static_Web_Server01 | ens33:192.168.0.137(VMnet4) | 无 | httpd、php、php-mysql | |
| Static_Web_Server02 | ens33:192.168.0.138(VMnet4) | |||
| Dynamic_Web_Server01 | ens33:192.168.0.135(VMnet4) | |||
| Dynamic_Web_Server02 | ens33:192.168.0.136(VMnet4) | |||
| Mariadb_DB_Server | ens33:192.168.0.134(VMnet4) | mariadb、nfs |
开始部署keepalived和haproxy
配置好本地YUM源，直接使用YUM一键安装：
[root@KA_HA_01 ~]# yum install -y keepalived haproxy
[root@KA_HA_02 ~]# yum install -y keepalived haproxy
配置keepalived(在KA_HA_01上):
[root@KA_HA_01 ~]# cp /etc/keepalived/keepalived.conf{,.bak}
[root@KA_HA_01 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalived@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id KA_HA_01
}
vrrp_script chk_haproxy {
script "killall -0 haproxy && exit 0 || exit 1"
interval 1
weight -5
}
vrrp_instance haproxy {
state MASTER
interface ens36
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.30.100 dev ens36
}
track_script {
chk_haproxy
}
}在KA_HA_02上做相同操作：
[root@KA_HA_02 ~]# cp /etc/keepalived/keepalived.conf{,.bak}
[root@KA_HA_02 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalived@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id KA_HA_01
}
vrrp_script chk_haproxy {
script "killall -0 haproxy && exit 0 || exit 1"
interval 1
weight -5
}
vrrp_instance haproxy {
state BACKUP
interface ens36
virtual_router_id 51
priority 80
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.30.100 dev ens36
}
track_script {
chk_haproxy
}
}配置haproxy:
[root@KA_HA_01 ~]# cp /etc/haproxy/haproxy.cfg{,.bak}
#---------------------------------------------------------------------
# Global settings
#---------------------------------------------------------------------
global
# to have these messages end up in /var/log/haproxy.log you will
# need to:
#
# 1) configure syslog to accept network log events. This is done
# by adding the '-r' option to the SYSLOGD_OPTIONS in
# /etc/sysconfig/syslog
#
# 2) configure local2 events to go to the /var/log/haproxy.log
# file. A line like the following can be added to
# /etc/sysconfig/syslog
#
# local2.* /var/log/haproxy.log
#
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
daemon
# turn on stats unix socket
stats socket /var/lib/haproxy/stats
#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
# use if not designated in their block
#---------------------------------------------------------------------
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 check 10s
maxconn 3000
#---------------------------------------------------------------------
# main frontend which proxys to the backends
#---------------------------------------------------------------------
frontend web *:80
acl url_dynamic path_beg -i php
acl url_static path_end -i .jpg .gif .png .css .js .html
use_backend static if url_static
default_backend php
#---------------------------------------------------------------------
# static backend for serving up images, stylesheets and such
#---------------------------------------------------------------------
backend static
balance source
hash-type consistent
server static1 192.168.0.137:80 check
server static2 192.168.0.138:80 check
#---------------------------------------------------------------------
# round robin balancing between the various backends
#---------------------------------------------------------------------
backend php
balance source
hash-type consistent
server php1 192.168.0.135:80 check
server php2 192.168.0.136:80 check
listen stats
bind :8088
stats enable
stats hide-version
stats realm 'HAProxy\ admin page'
acl allow_ip src 192.168.30.100
stats admin if allow_ip
stats uri /admin?stats
stats auth admin:admin
# stats admin if TRUE
http-request allow if allow_ip将配置好的haproxy.cfg直接拷贝到KA_HA_02上；
在KA_HA_01和KA_HA_02上分别启动keepalived和haproxy
[root@KA_HA_01 ~]# systemctl enable keepalived;systemctl start keepalived;systemctl enable haproxy;systemctl start haproxy
[root@KA_HA_02 ~]# systemctl enable keepalived;systemctl start keepalived;systemctl enable haproxy;systemctl start haproxy
部署Mariadb_DB_Server:
安装必要软件： [root@Mariadb_DB_Server ~]# yum install -y nfs-utils mariadb mariadb-server 新建apache用户（访问NFS时映射为apache） [root@Mariadb_DB_Server ~]# useradd -u 48 apache 新建需要共享出去的目录，并将目录属主、属组更改为apache [root@Mariadb_DB_Server ~]# mkdir -p /data/application/web/ [root@Mariadb_DB_Server ~]# install -o apache -g apache -d /data/application/web/ 下载wordpress: [root@Mariadb_DB_Server ~]# wget https://codeload.github.com/WordPress/WordPress/zip/4.3.1 [root@Mariadb_DB_Server ~]# mv WordPress-4.3.1.zip /data/application/web/ [root@Mariadb_DB_Server web]# unzip WordPress-4.3.1 [root@Mariadb_DB_Server web]# chown -R apache:apache /data/application/web/ [root@Mariadb_DB_Server web]# ll -d !$ ll -d /data/application/web/ drwxr-xr-x 3 apache apache 91 May 4 20:49 /data/application/web/ [root@Mariadb_DB_Server web]# ll total 9156 -rw-r--r-- 1 apache apache 29 May 4 20:33 index.html -rw-r--r-- 1 apache apache 51 May 4 20:49 index.php drwxr-xr-x 5 apache apache 4096 May 4 21:26 WordPress-4.3.1 -rw-r--r-- 1 apache apache 9359816 May 4 16:24 WordPress-4.3.1.zip<br />[root@Mariadb_DB_Server web]# chmod 777 WordPress-4.3.1/wp-content/<br />[root@Mariadb_DB_Server ~]# vim /etc/exports<br />/data/application/web/ 192.168.0.0/24(rw,async,anonuid=48,anongid=48)<br />或者下面这种<br />/data/application/web/ 192.168.0.135(rw,async,anonuid=48,anongid=48)<br />/data/application/web/ 192.168.0.136(rw,async,anonuid=48,anongid=48)<br />/data/application/web/ 192.168.0.137(rw,async,anonuid=48,anongid=48)<br />/data/application/web/ 192.168.0.138(rw,async,anonuid=48,anongid=48)<br /><br />
启动NFS，并配置NFS开机自启动：
[root@Mariadb_DB_Server ~]# systemctl start nfs;systemctl enable nfs
[root@Mariadb_DB_Server ~]# showmount -e
Export list for Mariadb_DB_Server:
/data/application/web 192.168.0.138,192.168.0.137,192.168.0.136,192.168.0.135
配置mariadb:
[root@Mariadb_DB_Server ~]# systemctl start mariadb [root@Mariadb_DB_Server ~]# mysql Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 2 Server version: 5.5.56-MariaDB MariaDB Server Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> create database wpdb; Query OK, 1 row affected (0.00 sec) MariaDB [(none)]> grant all privileges on wpdb.* to 'wpuser'@'%' identified by '123456'; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> flush privileges; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> show grants for wpuser\G; *************************** 1. row *************************** Grants for wpuser@%: GRANT USAGE ON *.* TO 'wpuser'@'%' IDENTIFIED BY PASSWORD '*6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9' *************************** 2. row *************************** Grants for wpuser@%: GRANT ALL PRIVILEGES ON `wpdb`.* TO 'wpuser'@'%' 2 rows in set (0.00 sec) MariaDB [(none)]> \q Bye
配置Dynamic_Web_Server:
[root@Dynamic_Web_Server01 ~]# yum install -y httpd php php-mysql
[root@Dynamic_Web_Server02 ~]# yum install -y httpd php php-mysql
配置Static_Web_server：
[root@Static_Web_Server01 ~]# yum install -y httpd php php-mysql
[root@Static_Web_Server02 ~]# yum install -y httpd php php-mysql
在Static_Web_Server和Dynamic_Web_Server 上启动httpd;
[root@Dynamic_Web_Server01 ~]# systemctl start httpd
在Dynamic_Web_Server上和Static_Web_server上准备测试页面：
[root@Dynamic_Web_Server01 ~]# cat /var/www/html/index.php
<h1>Dynamic_Web_Server01</h1>
<?php
phpinfo();
?>
[root@Dynamic_Web_Server02 ~]# cat /var/www/html/index.php
<h1>Dynamic_Web_Server02</h1>
<?php
phpinfo();
?>
[root@Static_Web_Server01 ~]# cat /var/www/html/index.html
<h1>Static_Web_Server01</h1>
[root@Static_Web_Server02 ~]# cat /var/www/html/index.html
<h1>Static_Web_Server02</h1>
测试：
这里遇到的问题：不明白为什么，在四台web服务器上任意 修改其中一台主机的测试页面，就会将修改结果同步到其他三台：
无解了！！！！
上述步骤是第二次实验了，第一次实验使用的VIP是192.168.0.100，其测试结果如下：
