Haproxy + keepalived for high availability load balancing of MySQL

HAProxy+Keepalived Realization MySQL High availability load balancing

Current environment description

A:10.10.99.180(MySQLMaster)----|

|________VIP(10.10.99.103) B:10.10.99.108(MySQLSlave)------| C:10.10.105.11(MySQLSlave) D:10.10.105.23(HAProxy+Keepalived)

E:10.10.105.24(HAProxy+Keepalived) VIP:10.10.105.30

The following operations are in 10.10.105.23 and 10.10.105.24 On the whole

1、 Adjust kernel parameters , Add non local IP Binding support

#vi/etc/sysctl.conf net.ipv4.ip_nonlocal_bind=1 #sysctl–p

2、 install haproxy and keepalived yum-yinstallhaproxykeepalived

3、 To configure keepalived.conf file

#vi/etc/haproxy/haproxy.cfg

!ConfigurationFileforkeepalived

global_defs{

notification_email{

[email protected]

}

[email protected]

smtp_server127.0.0.1

smtp_connect_timeout30

router_idLVS_DEVEL

}

vrrp_instanceVI_1{

stateMASTER#10.10.105.24 Set to BACKUP

interfaceeth0

virtual_router_id51

realserver10.10.105.23#10.10.105.24 Change your own ip

priority90#10.10.105.24 Set to 80

advert_int1

authentication{

auth_typePASS

auth_pass111111

}

virtual_ipaddress{

10.10.105.30

}

4、 To configure haproxy

#vi/etc/haproxy/haproxy.cfg

#thisconfigneedshaproxy-1.1.28orhaproxy-1.2.1

global

#log127.0.0.1local0

log127.0.0.1local1notice

maxconn5000

uid99

gid99

daemon

pidfile/var/run/haproxy.pid

defaults

logglobal

modehttp

#optionhttplog

optiondontlognull

retries3

optionredispatch

maxconn2000

contimeout5000

clitimeout50000

srvtimeout50000

listenMYSQL10.10.105.30:3306

modetcp

maxconn2000

balanceroundrobin

servermysql-10.10.99.10810.10.99.108:3306checkinter5000fall1rise2

servermysql-10.10.105.1110.10.105.11:3306checkinter5000fall1rise2

srvtimeout20000

listenstats_auth10.10.105.23:80

#listenstats_auth10.10.105.24:80#backupconfig

statsenable

statsuri/korea

statsauthadmin:12345

statsadminifTRUE

5、 To start, respectively, haproxy and keepalived

[[email protected]~]#/etc/init.d/haproxyrestart&&/etc/init.d/keepalivedrestart

Stoppinghaproxy:[OK]

Startinghaproxy:[OK]

Stoppingkeepalived:[OK]

Startingkeepalived:[OK]

For more details, please read on to the next page ： http://www.linuxidc.com/Linux/2013-10/92062p2.htm

Recommended reading ：

Haproxy+Keepalived build Weblogic High availability load balancing colony http://www.linuxidc.com/Linux/2013-09/89732.htm

Keepalived+HAProxy Configure highly available load balancing http://www.linuxidc.com/Linux/2012-03/56748.htm

CentOS 6.3 Next Haproxy+Keepalived+Apache Configure notes http://www.linuxidc.com/Linux/2013-06/85598.htm

Haproxy + KeepAlived Realization WEB to cluster around on CentOS 6 http://www.linuxidc.com/Linux/2012-03/55672.htm

Haproxy+Keepalived Build high availability load balancing http://www.linuxidc.com/Linux/2012-03/55880.htm

6、 see vip Whether to get up or not

[[email protected]~]#ipaddr

1:lo:<LOOPBACK,UP,LOWER_UP>mtu16436qdiscnoqueuestateUNKNOWN

link/loopback00:00:00:00:00:00brd00:00:00:00:00:00

inet127.0.0.1/8scopehostlo

inet6::1/128scopehost

valid_lftforeverpreferred_lftforever

2:eth0:<BROADCAST,MULTICAST,UP,LOWER_UP>mtu1500qdiscpfifo_faststateUPqlen1000

link/ether52:54:00:6c:d5:95brdff:ff:ff:ff:ff:ff

inet10.10.105.23/24brd10.10.105.255scopeglobaleth0

inet10.10.105.30/32scopeglobaleth0

inet6fe80::5054:ff:fe6c:d595/64scopelink

valid_lftforeverpreferred_lftforever

7、 Because we know crontab The grain fineness of is only 1 minute , It cannot be refined to seconds , So we write haproxy Loop detection script , And put it into the background to run

cd/home/ops/scripts

nohupshcheckhapid.sh&

vicheckhapid.sh

#!/bin/bash

whiletrue

do

HA=`ps-ef|grephaproxy|grep-vgrep|wc-l`

if[$HA-eq0];

then

/etc/init.d/haproxystart

echo"">/dev/null

sleep2

if[$HA-eq0];

then

/etc/init.d/keepalivedstop

fi

fi

sleep2

done

8、 High availability test

stay 10.10.105.23 On the implementation ipaddr|grepeth0

[[email protected]~]#ipaddr|grepeth0

eth0:<BROADCAST,MULTICAST,UP,LOWER_UP>mtu1500qdiscpfifo_faststateUPqlen1000

inet10.10.105.23/24brd10.10.105.255scopeglobaleth0

inet10.10.105.30/32scopeglobaleth0

close haproxy Open another terminal to continue ipaddr|grepeth0, observation

It can be found that when it cannot be started quickly haproxy After the process , The loop script will kill keepalived process , Realization vip Migration

10.10.105.30 Move quickly to 10.10.105.24 On this standby machine ！

9、MySQL test

Program after read / write separation , be-all select Statements can be accessed directly by 10.10.105.303306 To do the work , Back end mysql The server Concurrent read operations can be implemented

[[email protected]]#mysqlslap-h10.10.105.30--concurrency=100--iterations=1--create-schema='ultrax'--query='select*frompre_home_share;'--number-of-queries=10--debug-info-ubbs-piz3n3s0ft

Benchmark

Averagenumberofsecondstorunallqueries:1.028seconds

Minimumnumberofsecondstorunallqueries:1.028seconds

Maximumnumberofsecondstorunallqueries:1.028seconds

Numberofclientsrunningqueries:100

Averagenumberofqueriesperclient:0

Usertime0.02,Systemtime0.08

Maximumresidentsetsize6996,Integralresidentsetsize0

Non-physicalpagefaults1584,Physicalpagefaults0,Swaps0

Blocksin0out0,Messagesin0out0,Signals0

Voluntarycontextswitches1280,Involuntarycontextswitches91

10、 effect

You can visit http://10.10.105.23/korea

user name admin

password 12345

HAProxy+Keepalived Realization MySQL High availability load balancing

Current environment description

A:10.10.99.180(MySQLMaster)----|

|________VIP(10.10.99.103) B:10.10.99.108(MySQLSlave)------| C:10.10.105.11(MySQLSlave) D:10.10.105.23(HAProxy+Keepalived)

E:10.10.105.24(HAProxy+Keepalived) VIP:10.10.105.30

The following operations are in 10.10.105.23 and 10.10.105.24 On the whole

1、 Adjust kernel parameters , Add non local IP Binding support

#vi/etc/sysctl.conf net.ipv4.ip_nonlocal_bind=1 #sysctl–p

2、 install haproxy and keepalived yum-yinstallhaproxykeepalived

3、 To configure keepalived.conf file

#vi/etc/haproxy/haproxy.cfg

!ConfigurationFileforkeepalived

global_defs{

notification_email{

[email protected]

}

[email protected]

smtp_server127.0.0.1

smtp_connect_timeout30

router_idLVS_DEVEL

}

vrrp_instanceVI_1{

stateMASTER#10.10.105.24 Set to BACKUP

interfaceeth0

virtual_router_id51

realserver10.10.105.23#10.10.105.24 Change your own ip

priority90#10.10.105.24 Set to 80

advert_int1

authentication{

auth_typePASS

auth_pass111111

}

virtual_ipaddress{

10.10.105.30

}

4、 To configure haproxy

#vi/etc/haproxy/haproxy.cfg

#thisconfigneedshaproxy-1.1.28orhaproxy-1.2.1

global

#log127.0.0.1local0

log127.0.0.1local1notice

maxconn5000

uid99

gid99

daemon

pidfile/var/run/haproxy.pid

defaults

logglobal

modehttp

#optionhttplog

optiondontlognull

retries3

optionredispatch

maxconn2000

contimeout5000

clitimeout50000

srvtimeout50000

listenMYSQL10.10.105.30:3306

modetcp

maxconn2000

balanceroundrobin

servermysql-10.10.99.10810.10.99.108:3306checkinter5000fall1rise2

servermysql-10.10.105.1110.10.105.11:3306checkinter5000fall1rise2

srvtimeout20000

listenstats_auth10.10.105.23:80

#listenstats_auth10.10.105.24:80#backupconfig

statsenable

statsuri/korea

statsauthadmin:12345

statsadminifTRUE

5、 To start, respectively, haproxy and keepalived

[[email protected]~]#/etc/init.d/haproxyrestart&&/etc/init.d/keepalivedrestart

Stoppinghaproxy:[OK]

Startinghaproxy:[OK]

Stoppingkeepalived:[OK]

Startingkeepalived:[OK]