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HaProxy+Keepalived+Mycat高可用群集配置

2016-04-25 19:45:24 来源: 阅读:

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：

 

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_64make install PREFIX=/usr/local/haproxy

HaProxy配置

 

cd /usr/local/haproxytouch haproxy.cfgvim 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 ##统计页面
      stats uri /admin-status 
      stats auth  admin:admin
      mode    http
      option  httplog
listen mycat_service 192.168.57.180:18066 ##客户端就是通过这个ip和端口进行连接，这个vip和端口绑定的是mycat8066端口
      mode tcp
      option tcplog
  option httpchk OPTIONS * HTTP/1.1rnHost: 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
listen mycat_admin 192.168.57.180:19066 ##客户端就是通过这个ip和端口进行连接，这个vip和端口绑定的是mycat9066端口
mode tcp
option tcplog
option httpchk OPTIONS * HTTP/1.1rnHost: www
balance roundrobin
server mycat_181 192.168.57.181:9066 check port 48700 inter 5s rise 2 fall 3
server mycat_179 192.168.57.179:9066 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 514local0.* /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
在local7.* /var/log/boot.log下面加入以下内容
local0.* /var/log/haproxy.log
 重启rsyslog服务
service rsyslog restart
将rsyslog加入自动启动服务
chkconfig --add rsyslogchkconfig --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.dtouch mycat_status

vim mycat_status
service mycat_status{flags = REUSEsocket_type = streamport = 48700wait = nouser = nobodyserver =/usr/local/bin/mycat_statuslog_on_failure += USERIDdisable = 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 OKr" (if mycat is running smoothly)## "HTTP/1.x 503 Internal Server Errorr" (else)mycat=`/usr/local/mycat/bin/mycat status |grep 'not running'| wc -l`if [ "$mycat" = "0" ];then/bin/echo -e "HTTP/1.1 200 OKrn"else/bin/echo -e "HTTP/1.1 503 Service Unavailablern"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_statuschmod 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 xinetdchkconfig --level 2345 xinetd on
 
页面测试
http://192.168.57.180:48800/admin-status
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/startchmod +x /usr/local/haproxy/sbin/startvim  /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/stopchmod +x /usr/local/haproxy/sbin/stopvim /usr/local/haproxy/sbin/stop
#!/bin/shps -ef | grep sbin/haproxy | grep -v grep |awk '{print $2}'|xargs kill -s 9
授权
chown -R haproxy.haproxy /usr/local/haproxy/*
Keepalived安装步骤
keepalived的安装步骤过程在两台服务器上除了keepalived.conf配置文件稍微有点区别外其他的地方都一致。
openssl安装
./config --prefix=/usr/local/openssl./config -tmake dependmakemake testmake installln -s /usr/local/openssl /usr/local/sslvim /etc/ld.so.conf
在文件末尾加入以下内容
/usr/local/openssl/lib
修改环境变量
vim /etc/profile
在文件末尾加入以下内容
export OPENSSL=/usr/local/openssl/binexport PATH=$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/keepalivedmakemake installcp /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/keepalivedcd /etc/keepalived/cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalivedmkdir -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 Fileforkeepalivedvrrp_script chk_http_port {script"/etc/keepalived/scripts/check_haproxy.sh"interval 2weight 2}vrrp_instance VI_1 {state MASTER #192.168.57.179上改为BACKUPinterface 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120advert_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 PASSauth_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，haproxy配置的使用的就是这里配置的VIP192.168.57.180 dev eth0 scope global}notify_master /etc/keepalived/scripts/haproxy_master.shnotify_backup /etc/keepalived/scripts/haproxy_backup.shnotify_fault /etc/keepalived/scripts/haproxy_fault.shnotify_stop /etc/keepalived/scripts/haproxy_stop.sh}
backup
! Configuration Fileforkeepalivedvrrp_script chk_http_port {script"/etc/keepalived/scripts/check_haproxy.sh"interval 2weight 2}vrrp_instance VI_1 {state BACKUP #192.168.57.179上改为BACKUPinterface 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120advert_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 PASSauth_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192.168.57.180 dev eth0 scope global}notify_master /etc/keepalived/scripts/haproxy_master.shnotify_backup /etc/keepalived/scripts/haproxy_backup.shnotify_fault /etc/keepalived/scripts/haproxy_fault.shnotify_stop /etc/keepalived/scripts/haproxy_stop.sh}
vim /etc/keepalived/scripts/check_haproxy.sh
#!/bin/bashSTARTHAPROXY="/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]" >> $LOGFILEA=`ps -C haproxy --no-header |wc -l`echo "[check_haproxy status]" >> $LOGFILEdate >> $LOGFILEif [ $A -eq 0 ];thenecho $STARTHAPROXY >> $LOGFILE$STARTHAPROXY >> $LOGFILE 2>&1sleep 5fiif [ `ps -C haproxy --no-header |wc -l` -eq 0 ];thenexit 0elseexit 1fi
vim /etc/keepalived/scripts/haproxy_master.sh
#!/bin/bashSTARTHAPROXY=`/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]" >> $LOGFILEdate >> $LOGFILEecho "Being master...." >> $LOGFILE 2>&1echo "stop haproxy...." >> $LOGFILE 2>&1$STOPHAPROXY >> $LOGFILE 2>&1echo "start haproxy...." >> $LOGFILE 2>&1$STARTHAPROXY >> $LOGFILE 2>&1echo "haproxy stared ..." >> $LOGFILE
vim /etc/keepalived/scripts/haproxy_backup.sh
#!/bin/bashSTARTHAPROXY=`/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]" >> $LOGFILEdate >> $LOGFILEecho "Being backup...." >> $LOGFILE 2>&1echo "stop haproxy...." >> $LOGFILE 2>&1$STOPHAPROXY >> $LOGFILE 2>&1echo "start haproxy...." >> $LOGFILE 2>&1$STARTHAPROXY >> $LOGFILE 2>&1echo "haproxy stared ..." >> $LOGFILE
vim /etc/keepalived/scripts/haproxy_fault.sh
#!/bin/bashLOGFILE=/usr/local/keepalived/var/log/keepalived-haproxy-state.logecho "[fault]" >> $LOGFILEdate >> $LOGFILE
vim /etc/keepalived/scripts/haproxy_stop.sh
#!/bin/bashLOGFILE=/usr/local/keepalived/var/log/keepalived-haproxy-state.logecho "[stop]" >> $LOGFILEdate >> $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 keepalivedchkconfig --level 2345 keepalived on--启动服务service keepalived start
 
 
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
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