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HaProxy+Keepalived+Mycat高可用群集配置

时间：2016-02-18 19:26:41      阅读：369      评论：0      收藏：0      [点我收藏+]

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概述  

本章节主要介绍配置HaProxy+Keepalived高可用群集，Mycat的配置就不在这里做介绍，可以参考我前面写的几篇关于Mycat的文章。

 部署图：

技术分享

 

配置  

 HaProxy安装

181和179两台服务器安装haproxy的步骤一致

--创建haproxy用户
useradd haproxy

--解压完后进入haproxy目录
cd haproxy-1.4.25/

--编译安装
make TARGET=linux26 PREFIX=/usr/local/haproxy ARCH=x86_64

make install PREFIX=/usr/local/haproxy

HaProxy配置

 

cd /usr/local/haproxy

touch haproxy.cfg

vim haproxy.cfg


global
    log 127.0.0.1   local0  ##记日志的功能
    maxconn 4096
    chroot /usr/local/haproxy
    user haproxy
    group haproxy
    daemon
defaults
log global
option dontlognull
retries 3
option redispatch
maxconn 2000
contimeout 5000
clitimeout 50000
srvtimeout 50000
listen  admin_stats 192.168.57.180:48800 
      stats uri /admin-status        ##统计页面
      stats auth  admin:admin
      mode    http
      option  httplog
listen allmycat_service 192.168.57.180:8098
      mode tcp
      option tcplog
  option httpchk OPTIONS * HTTP/1.1\r\nHost:\ www
      balance roundrobin
  server mycat_181 192.168.57.181:8066 check port 48700 inter 5s rise 2 fall 3
  server mycat_179 192.168.57.179:8066 check port 48700 inter 5s rise 2 fall 3
      srvtimeout 20000





















配置haproxy记录日志功能




yum –y install rsyslog

mkdir /etc/rsyslog.d

cd /etc/rsyslog.d/

touch haproxy.conf

vim haproxy.conf






$ModLoad imudp
$UDPServerRun 514
local0.* /var/log/haproxy.log




vim /etc/rsyslog.conf


在#### RULES ####上面一行加入以下内容




# Include all config files in /etc/rsyslog.d/
$IncludeConfig /etc/rsyslog.d/*.conf




技术分享


在local7.* /var/log/boot.log下面加入以下内容




local0.* /var/log/haproxy.log




技术分享


 重启rsyslog服务




service rsyslog restart




将rsyslog加入自动启动服务




chkconfig --add rsyslog
chkconfig --level 2345 rsyslog on




 


配置监听mycat是否存活


安装xinetd插件






yum install xinetd -y






cd /etc/xinetd.d

touch mycat_status

vim mycat_status






service mycat_status
{
flags = REUSE
socket_type = stream
port = 48700
wait = no
user = nobody
server =/usr/local/bin/mycat_status
log_on_failure += USERID
disable = no
}




创建xinetd启动服务脚本


vim /usr/local/bin/mycat_status




#!/bin/bash
#/usr/local/bin/mycat_status.sh
# This script checks if a mycat server is healthy running on localhost. It will
# return:
#
# "HTTP/1.x 200 OK\r" (if mycat is running smoothly)
#
# "HTTP/1.x 503 Internal Server Error\r" (else)
mycat=`/usr/local/mycat/bin/mycat status |grep ‘not running‘| wc -l`
if [ "$mycat" = "0" ];
then
/bin/echo -e "HTTP/1.1 200 OK\r\n"
else
/bin/echo -e "HTTP/1.1 503 Service Unavailable\r\n"
fi




修改脚本文件权限


我就是在这里被坑了很久,根据权威指南上面mycat_status这个脚本里面的内容也有很多问题，好几个地方没有空格.




chmod 777 /usr/local/bin/mycat_status
chmod 777 /etc/xinetd.d/mycat_status




 


将启动脚本加入服务


vim /etc/services


在末尾加入




mycat_status 48700/tcp # mycat_status




重启xinetd服务




service xinetd restart




将xinetd加入自启动服务




chkconfig --add xinetd
chkconfig --level 2345 xinetd on




 


页面测试


http://192.168.57.180:48800/admin-status


技术分享


由于179还没有安装好，所以这里179显示连接失败


创建haproxy启停脚本


启动脚本




touch /usr/local/haproxy/sbin/start
chmod +x /usr/local/haproxy/sbin/start
vim  /usr/local/haproxy/sbin/start






#!/bin/sh
/usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg &




关闭脚本




touch /usr/local/haproxy/sbin/stop
chmod +x /usr/local/haproxy/sbin/stop
vim /usr/local/haproxy/sbin/stop






#!/bin/sh
ps -ef | grep sbin/haproxy | grep -v grep |awk ‘{print $2}‘|xargs kill -s 9




授权




chown -R haproxy.haproxy /usr/local/haproxy/*




Keepalived安装步骤


keepalived的安装步骤过程在两台服务器上除了keepalived.conf配置文件稍微有点区别外其他的地方都一致。


openssl安装




./config --prefix=/usr/local/openssl
./config -t
make depend
make
make test
make install
ln -s /usr/local/openssl /usr/local/ssl

vim /etc/ld.so.conf




在文件末尾加入以下内容




/usr/local/openssl/lib




修改环境变量


vim /etc/profile


在文件末尾加入以下内容




export OPENSSL=/usr/local/openssl/bin
export PATH=$PATH:$OPENSSL




使环境变量立刻生效




source /etc/profile




安装openssl-devel




yum install openssl-devel -y




 


测试


ldd /usr/local/openssl/bin/openssl




linux-vdso.so.1 => (0x00007fff996b9000)
libdl.so.2 =>/lib64/libdl.so.2 (0x00000030efc00000)
libc.so.6 =>/lib64/libc.so.6 (0x00000030f0000000)
/lib64/ld-linux-x86-64.so.2 (0x00000030ef800000)





which openssl





/usr/bin/openssl




openssl version




OpenSSL 1.0.0-fips 29 Mar 2010




keepalived安装




./configure --prefix=/usr/local/keepalived
make
make install
cp /usr/local/keepalived/sbin/keepalived /usr/sbin/
cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/
mkdir /etc/keepalived
cd /etc/keepalived/
cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived
mkdir -p  /usr/local/keepalived/var/log




 


创建配置文件和脚本




mkdir /etc/keepalived/scripts

cd /etc/keepalived/scripts




vim /etc/keepalived/keepalived.conf


master




! Configuration Fileforkeepalived
vrrp_script chk_http_port {
script"/etc/keepalived/scripts/check_haproxy.sh"
interval 2
weight 2
}
vrrp_instance VI_1 {
state MASTER #192.168.57.179上改为BACKUP
interface eth0 #对外提供服务的网络接口
virtual_router_id 51 #VRRP组名，两个节点的设置必须一样，以指明各个节点属于同一VRRP组
priority 150 #数值愈大，优先级越高,backup上改为120
advert_int 1 #同步通知间隔
authentication { #包含验证类型和验证密码。类型主要有PASS、AH两种，通常使用的类型为PASS，据说AH使用时有问题
auth_type PASS
auth_pass 1111
}
track_script {
chk_http_port #调用脚本check_haproxy.sh检查haproxy是否存活
}
virtual_ipaddress { #vip地址，这个ip必须与我们在lvs客户端设定的vip相一致
192.168.57.180 dev eth0 scope global
}
notify_master /etc/keepalived/scripts/haproxy_master.sh
notify_backup /etc/keepalived/scripts/haproxy_backup.sh
notify_fault /etc/keepalived/scripts/haproxy_fault.sh
notify_stop /etc/keepalived/scripts/haproxy_stop.sh
}




backup




! Configuration Fileforkeepalived
vrrp_script chk_http_port {
script"/etc/keepalived/scripts/check_haproxy.sh"
interval 2
weight 2
}
vrrp_instance VI_1 {
state BACKUP #192.168.57.179上改为BACKUP
interface eth0 #对外提供服务的网络接口
virtual_router_id 51 #VRRP组名，两个节点的设置必须一样，以指明各个节点属于同一VRRP组
priority 120 #数值愈大，优先级越高,backup上改为120
advert_int 1 #同步通知间隔
authentication { #包含验证类型和验证密码。类型主要有PASS、AH两种，通常使用的类型为PASS，据说AH使用时有问题
auth_type PASS
auth_pass 1111
}
track_script {
chk_http_port #调用脚本check_haproxy.sh检查haproxy是否存活
}
virtual_ipaddress { #vip地址，这个ip必须与我们在lvs客户端设定的vip相一致
192.168.57.180 dev eth0 scope global
}
notify_master /etc/keepalived/scripts/haproxy_master.sh
notify_backup /etc/keepalived/scripts/haproxy_backup.sh
notify_fault /etc/keepalived/scripts/haproxy_fault.sh
notify_stop /etc/keepalived/scripts/haproxy_stop.sh
}




vim /etc/keepalived/scripts/check_haproxy.sh




#!/bin/bash
STARTHAPROXY="/usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg"
STOPKEEPALIVED="/etc/init.d/keepalived stop"
LOGFILE="/usr/local/keepalived/var/log/keepalived-haproxy-state.log"
echo "[check_haproxy status]" >> $LOGFILE
A=`ps -C haproxy --no-header |wc -l`
echo "[check_haproxy status]" >> $LOGFILE
date >> $LOGFILE
if [ $A -eq 0 ];then
echo $STARTHAPROXY >> $LOGFILE
$STARTHAPROXY >> $LOGFILE 2>&1
sleep 5
fi
if [ `ps -C haproxy --no-header |wc -l` -eq 0 ];then
exit 0
else
exit 1
fi




vim /etc/keepalived/scripts/haproxy_master.sh




#!/bin/bash
STARTHAPROXY=`/usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg`
STOPHAPROXY=`ps -ef | grep sbin/haproxy | grep -v grep | awk ‘{print $2}‘| xargs kill -s 9`
LOGFILE="/usr/local/keepalived/var/log/keepalived-haproxy-state.log"
echo "[master]" >> $LOGFILE
date >> $LOGFILE
echo "Being master...." >> $LOGFILE 2>&1
echo "stop haproxy...." >> $LOGFILE 2>&1
$STOPHAPROXY >> $LOGFILE 2>&1
echo "start haproxy...." >> $LOGFILE 2>&1
$STARTHAPROXY >> $LOGFILE 2>&1
echo "haproxy stared ..." >> $LOGFILE




vim /etc/keepalived/scripts/haproxy_backup.sh




#!/bin/bash
STARTHAPROXY=`/usr/local/haproxy/sbin/haproxy -f /usr/local/haproxy/haproxy.cfg`
STOPHAPROXY=`ps -ef | grep sbin/haproxy | grep -v grep | awk ‘{print $2}‘| xargs kill -s 9`
LOGFILE="/usr/local/keepalived/var/log/keepalived-haproxy-state.log"
echo "[backup]" >> $LOGFILE
date >> $LOGFILE
echo "Being backup...." >> $LOGFILE 2>&1
echo "stop haproxy...." >> $LOGFILE 2>&1
$STOPHAPROXY >> $LOGFILE 2>&1
echo "start haproxy...." >> $LOGFILE 2>&1
$STARTHAPROXY >> $LOGFILE 2>&1
echo "haproxy stared ..." >> $LOGFILE




vim /etc/keepalived/scripts/haproxy_fault.sh




#!/bin/bash
LOGFILE=/usr/local/keepalived/var/log/keepalived-haproxy-state.log
echo "[fault]" >> $LOGFILE
date >> $LOGFILE




vim /etc/keepalived/scripts/haproxy_stop.sh




#!/bin/bash
LOGFILE=/usr/local/keepalived/var/log/keepalived-haproxy-state.log
echo "[stop]" >> $LOGFILE
date >> $LOGFILE




 赋予脚本可执行权限




chmod 777 /etc/keepalived/scripts/*




将keepalived加入自启动服务




chkconfig --add keepalived
chkconfig --level 2345 keepalived on

--启动服务
service keepalived start




 


 技术分享




总结  


权威指南上面代码部分好多处都存在问题，几乎每一块代码都存在问题，有时候往往一个空格需要花很长的时间去找这个问题，所以在代码方面要细心；特别是复制别人的代码不要原本照抄最好是检查一下，除了代码本身的问题权限有时候也是容易忽略的错误，特别是可执行文件要注意是否有可执行权限。


 


 


 


 








备注：


    作者：pursuer.chen


    博客：http://www.cnblogs.com/chenmh


本站点所有随笔都是原创，欢迎大家转载；但转载时必须注明文章来源，且在文章开头明显处给明链接。


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HaProxy+Keepalived+Mycat高可用群集配置
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原文地址：http://www.cnblogs.com/chenmh/p/5194636.html

                

                

                    

                        

                            

                                

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