Implementation of Discuz load balancing based on LVS-DR model

Objective:

The LVS-DR model is almost the same as the previous Lvs-nat model, except that the network topology is different.

Hostvs

Os:centos-7-x86_64

Hostname:ws1

ENO16777736:10.0.0.60/8 (DIP)

eno167777336:0: 10.0.0.61/32 (VIP)

gateway:10.0.0.254

HostRS1

OS:centos-7-x86_64

Hostname:ws2

ENO16777736:10.0.0.101/8 (RIP1)

lo:0 10.0.0.61/32 (VIP)

gateway:10.0.0.254

HostRS2

Os:centos-7-x86_64

Hostname:ws3

ENO16777736:10.0.0.102/8 (RIP2)

lo:0 10.0.0.61/32 (VIP)

gateway:10.0.0.254

Hostdb

Os:centos-7-x86_64

Hostname:ws4

Eno16777736:10.0.0.202/8

gateway:10.0.0.254

Time synchronization:

# ntpdate cn.pool.ntp.org# Hwclock--SYSOHC

Install the Software:

Hostdb

Installing binary mariadb-5.5.46

detailed configuration Please enter Portal:http://wscto.blog.51cto.com/11249394/1783131

Installing NFS

# yum Install-y nfs-utils

HostRS2

Install Nginx, note nginx belongs to Epel source

# yum install-y nginx php-fpm php-mbstring php-mysql nfs-utils mariadb

HostRS1

Install Nginx, note nginx belongs to Epel source

# yum install-y nginx php-fpm php-mbstring php-mysql nfs-utils mariadb

Hostvs

Installing the LVS CLI Interface program Ipvsadm

# yum Install-y Ipvsadm

Configuring the Cluster

Hostdb

Configure MARIADB

After the security initialization is complete, create the Discuz database and the Discuz user and authorize it to remotely manipulate the database

# mysql_secure_installation# mysql-u root-p> CREATE database discuz;> create user ' discuz ' @ ' lodalhost ' identified By ' 123456 ';> grant all privileges on discuz.* to ' discuz ' @ '% ' identified by ' 123456 ';> flush privileges;

Configuring NFS

# mkdir /nfshare/# ls -ld /nfshare/drwxr-xr-x 2 root root 6  may 9 17:01 /nfshare/# echo  "/nfshare/ 10.0.0.101 (rw,no_root_squash,async)   10.0.0.102 (rw,no_root_squash,async) " > /etc/exports# /etc/init.d/rpcbind startstarting  rpcbind:                         [  OK  ]# /etc/init.d/nfs  startstarting nfs services:                       [  ok  ]starting nfs  quotas:                       [  OK  ]Starting NFS mountd:                         [   OK  ]Starting NFS daemon:                        [  ok   ]Starting RPC idmapd:                       [  ok  ]# chkconfig  rpcbind on# chkconfig nfs on# chkconfig rpcbind --listrpcbind             0:off    1:off     2:on    3:on    4:on    5:on     6:off# chkconfig nfs --listnfs                  0:off    1:off    2:on    3:on     4:on    5:on    6:off# showmount -e  127.0.0.1export list for 127.0.0.1:/nfshare/ 10.0.0.101,10.0.0.102

Note: Rpcbind and NFS Two service boot order cannot be replaced, otherwise there will be a problem

Unpack the Discuz package to the/nfsshare/directory

# mkdir/nfshare/discuz# unzip/discuz_x3.2_sc_utf8.zip-d/nfshare/discuz/# ls/nfshare/discuz/readme upload Utility

HostRS1

Prevent RS from responding to VIP ARP requests before configuring VIP to RS

echo 1 >/proc/sys/net/ipv4/conf/all/arp_ignoreecho 1 >/proc/sys/net/ipv4/conf/lo/arp_ignoreecho 2 >/proc/ Sys/net/ipv4/conf/all/arp_announceecho 2 >/proc/sys/net/ipv4/conf/lo/arp_announce

Configure the VIP on the local loopback interface alias lo:0 and add routes

Ifconfig lo:0 10.0.0.61 broadcast 10.0.0.61 netmask 255.255.255.255 route add-host 10.0.0.61 Dev lo:0

Test the MARIADB on the link hostdb

# mysql-h 10.0.0.202-u discuz-p

Mount NFS Shared storage directory on Hostdb, the main group modified to Apache

# SHOWMOUNT-E 172.18.64.202Export list for 172.18.64.202:/nfshare/10.0.0.101,10.0.0.102# mkdir/htdocs# ls-ld/htdocs/d Rwxr-xr-x 2 root root 6 May 9 17:05/htdocs/# mount-t NFS 172.18.64.202:/nfshare/htdocs# ls/htdocs/discuz# chown-r APA che:apache/htdocs/discuz/

Start PHP-FPM

# systemctl start php-fpm.service# ss-tnl | grep 9000

Configure Nginx configuration file

# vim /etc/nginx/nginx.confserver {        listen      80;        server_name  ws2         # Load configuration files for the  default server block.        include /etc/nginx/ default.d/*.conf;        location / {             root    /htdocs/discuz/upload;             index index.html index.htm  index.php;        }         Location ~ \.php$ {            root   /htdocs/discuz/upload;            fastcgi_pass 127.0.0.1:9000;             fastcgi_index index.php;             include /etc/nginx/fastcgi.conf;         }        error_page 404  /404.html;            location = / 40x.html {        }         error_page 500 502 503 504 /50x.html;             location = /50x.html {         }    }# nginx -tnginx: the configuration file /etc/ Nginx/nginx.conf syntax is oknginx: configuration file /etc/nginx/nginx.conf test is  successful# nginx# ss -tnl | grep 80listen     0       128          *:80                         *:*

Test Access Discuz Installation page host plus final/

# curl-i http://10.0.0.101/install/HTTP/1.1 Okserver:nginx/1.6.3date:mon, 10:23:50 Gmtcontent-type:tex t/htmlconnection:keep-alivex-powered-by:php/5.4.16

HostRS2

Configuration Ibid.

Hostvs

Implementation of Discuz load balancing based on LVS-DR model