Haproxy Building a Web cluster

Topology architecture diagram

System environment:

Host	Operating System	IP Address	Package
Load Dispatch server:	CentOS 7.0 x86_64	192.168.100.25	Haproxy-1.5.19.tar.gz
WEB1 node Server:	CentOS 7.0 x86_64	192.168.100.26	Nginx-1.12.0.tar.gz
WEB2 node Server:	CentOS 7.0 x86_64	192.168.100.27	Nginx-1.12.0.tar.gz
Win 7 Client:	Windows 7	192.168.100.30	No

Start deploying one, Web1 node server 1. Install the Environment pack

2. New Admin user Nginx

useradd -M -s /sbin/nologin nginx

3. Add compressed Nginx Package

tar zxvf nginx-1.12.0.tar.gz -C /opt/

4. Switch to Nginx directory

cd /opt/nginx-1.12.0/

5. Configuration

./configure \
--prefix=/usr/local/nginx \ #安装目录
--user=nginx \ #用户
--group=nginx #用户组

6. Compiling and installing

make && make install

7. Create a Web site home index.html

echo "

8. Establish soft links for easy management of Nginx

ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin/

9. Check Nginx Configuration

nginx -t

10. Start the service

nginx

Shutting down firewalls and SELinux

systemctl stop firewalld.service setenforce 0

Test

II. web2 node server 1. Install the Environment pack

2. New User Nginx

useradd -M -s /sbin/nologin nginx

3. Add compressed Nginx Package

tar zxvf nginx-1.12.0.tar.gz -C /opt/

4. Switch to Nginx directory

cd /opt/nginx-1.12.0/

5. Configuration

./configure \
--prefix=/usr/local/nginx \ #安装目录
--user=nginx \ #用户
--group=nginx #用户组

6. Compiling and installing

make && make install

7. Create a Web site home index.html

echo "

8. Establish soft links for easy management of Nginx

ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin/

9. Check Nginx Configuration

nginx -t

10. Start the service

nginx

Shutting down firewalls and SELinux

systemctl stop firewalld.service setenforce 0

Test

Third, Haproxy server 1. Install Environment pack

yum install -y pcre-devel bzip2-devel gcc gcc-c++ make

2. Unzip the Haproxy

tar zxvf /linux-tools/haproxy-1.5.19.tar.gz -C /opt/

3. Switch to the Haproxy directory

cd /opt/haproxy-1.5.19/

4. Compiling and installing

make TARGET=linux26make install

5. Create the Haproxy profile directory

mkdir /etc/haproxy

6. Copy the template configuration file to the Haproxy directory

cp examples/haproxy.cfg /etc/haproxy/     

7. Edit Haproxy. CFG configuration file

vim /etc/haproxy/haproxy.cfg

#1. Delete the following 2 lines of statements
Chroot/usr/share/haproxy
Redispatch

#2. Delete all Listen items
#3. New Add the following data
Listen Webcluster 0.0.0.0:80
Option Httpchk get/index.html
Balance Roundrobin
Server Inst1 192.168.100.26:80 check Inter fall 3
Server Inst2 192.168.100.27:80 check Inter fall 3

8. Create a startup script Haproxy

cp /opt/haproxy-1.5.19/examples/haproxy.init /etc/init.d/haproxy

9. Assign executable permissions for Haproxy

chmod +x /etc/init.d/haproxy

10. Join the system service

chkconfig --add /etc/init.d/haproxyln -s /usr/local/sbin/haproxy /usr/sbin/haproxy

11. Start Haproxy

service haproxy start

12. Turn off the firewall and SELinux

systemctl stop firewalld.service setenforce 0

13. Test:

Win7 Client: http://192.168.100.25/

Iv. Add Log function

Note: Haproxy default is not to output the file log directly, so we want to use Linux rsyslog to let haproxy output log

1. Edit Haproxy.cfg

vim /etc/haproxy/haproxy.cfg

#将信息提示与告警进行分离
Log/dev/log local0 Info
Log/dev/log local0 Notice

2. Restart Haproxy

service haproxy restart

3. New configuration format

vim /etc/rsyslog.d/haproxy.conf

if ($programname = = ' Haproxy ' and $syslogseverity-text = = ' Info ')
Then-/var/log/haproxy/haproxy-info.log
&~
if ($programname = = ' Haproxy ' and $syslogseverity-text = = ' notice ')
Then-/var/log/haproxy/haproxy-notice.log
&~

4. Restart the System Log service

systemctl restart rsyslog.service

5. After the client accesses, the record is viewed in the log directory of the dispatch server

cat /var/log/haproxy/haproxy-info.log

At this point, the Haproxy build Web cluster is complete.

Haproxy Building a Web cluster