Percona-XtraDB-Cluster+haproxy+keepalived 编译安装 推荐

系统：centos7
192.168.1.55 mysql 端口3306 Percona-XtraDB-Cluster 主节点
192.168.1.56 mysql端口3307 Percona-XtraDB-Cluster+haproxy+keepalived
192.168.1.57 MySQL端口3307 Percona-XtraDB-Cluster+haproxy+keepalived
192.168.4.58/21 vip ip
软件版本：Percona-XtraDB-Cluster-5.7.16-27.19 percona-xtrabackup-2.4.5
haproxy-1.7.0 keepalived-1.3.2
一、linux 系统限制配置1、关闭系统防火墙

systemctl stop firewalld.service 关闭防火墙
systemctl disable firewalld.service  禁用防火墙

2、关闭SElinux
sed -i 's/SELINUX=.*/SELINUX=disabled/g' /etc/selinux/config
setenforce 0 selinux 立即生效

二、系统安装约定
源码包编译安装位置：/usr/local/软件名字数据目录 /apps/data三、下在源码安装包下载 Percona-XtraDB-Cluster-5.7.16-27.19

wget -P /usr/local/src https://www.percona.com/downloads/Percona-XtraDB-Cluster-57/Percona-XtraDB-Cluster-5.7.16-27.19/rel-5.7.16/source/tarball/Percona-XtraDB-Cluster-5.7.16-27.19.tar.gz[/code]下载percona-xtrabackup-2.4.5 
wget -P /usr/local/src https://www.percona.com/downloads/XtraBackup/Percona-XtraBackup-2.4.5/source/tarball/percona-xtrabackup-2.4.5.tar.gz[/code]下载boost_1_59_0 
mkdir -p /usr/local/boost
wget -P /usr/local/boost https://nchc.dl.sourceforge.net/project/boost/boost/1.59.0/boost_1_59_0.tar.gz[/code]下载haproxy-1.7.0 
wget -P /usr/local/src http://www.haproxy.org/download/1.7/src/haproxy-1.7.0.tar.gz[/code]下载keepalived-1.3.2 
wget -P /usr/local/src http://www.keepalived.org/software/keepalived-1.3.2.tar.gz[/code]下载automake-1.15 
wget -P /usr/local/src ftp://ftp.gnu.org/gnu/automake/automake-1.15.tar.gz[/code]四、安装编译环境及编译依赖 
1、yum -y install epel-release
2、卸载旧版mysql或mariadb
yum -y remove mariadb* mysql*
3、安装编译环境
yum -y install  libtool ncurses-devel libgcrypt-devel  libev-devel \
git scons  gcc  gcc-c++  openssl  check  cmake  bison boost-devel  \
asio-devel libaio-devel  ncurses-devel  readline-devel  pam-devel socat \
libaio  automake autoconf vim redhat-lsb check-devel curl  curl-devel xinetd
4、安装keepalived 依赖 （192.168.1.56 192.168.1.57）
yum -y install libnl-devel openssl-devel libnfnetlink-devel ipvsadm \
popt-devel libnfnetlink kernel-devel popt-static iptraf
五、编译安装 Percona-XtraDB-Cluster-5.7.16-27.19 percona-xtrabackup-2.4.5
1、解压percona-xtrabackup-2.4.5.tar.gz
tar -xvf /usr/local/src/percona-xtrabackup-2.4.5.tar.gz -C /usr/local/src/
2、解压Percona-XtraDB-Cluster-5.7.16-27.19.tar.gz
tar -xvf /usr/local/src/Percona-XtraDB-Cluster-5.7.16-27.19.tar.gz -C /usr/local/src/
3、编译percona-xtrabackup-2.4.5
cd /usr/local/src/percona-xtrabackup-2.4.5/
cmake ./ -DBUILD_CONFIG=xtrabackup_release \
-DWITH_MAN_PAGES=OFF \
-DDOWNLOAD_BOOST=1 \
-DWITH_BOOST="/usr/local/boost"
make -j4 && make install

ln -sf /usr/local/xtrabackup/bin/* /usr/sbin/
4、编译安装Percona-XtraDB-Cluster-5.7.16-27.19
4.1、创建mysql用户名及文件夹
mkdir /apps/{run,log}/mysqld -p
useradd mysql -s /sbin/nologin -M
chown -R mysql:mysql /apps
4.2、编译garbd,libgalera_smm.so
cd /usr/local/src/Percona-XtraDB-Cluster-5.7.16-27.19
cd "percona-xtradb-cluster-galera"
revno值 cat GALERA-REVISION
scons -j4 psi=1 --config=force  revno="b98f92f"  boost_pool=0 libgalera_smm.so
scons -j4 --config=force revno="b98f92f" garb/garbd
创建pxc安装目录
mkdir -p /usr/local/Percona-XtraDB-Cluster/{bin,lib}
拷贝编译结果文件到pxc安装目录
cp garb/garbd /usr/local/Percona-XtraDB-Cluster/bin
cp libgalera_smm.so /usr/local/Percona-XtraDB-Cluster/lib
4.3、编译 Percona-XtraDB-Cluster-5.7.16-27.19
-DMYSQL_SERVER_SUFFIX 值得获取
cd /usr/local/src/Percona-XtraDB-Cluster-5.7.16-27.19
WSREP_VERSION="$(grep WSREP_INTERFACE_VERSION wsrep/wsrep_api.h | cut -d '"' -f2).$(grep 'SET(WSREP_PATCH_VERSION'  "cmake/wsrep.cmake" | cut -d '"' -f2)"
echo $WSREP_VERSION
-DCOMPILATION_COMMENT 值获取
cd /usr/local/src/Percona-XtraDB-Cluster-5.7.16-27.19
source VERSION
MYSQL_VERSION="$MYSQL_VERSION_MAJOR.$MYSQL_VERSION_MINOR.$MYSQL_VERSION_PATCH"
echo $MYSQL_VERSION
REVISION="$(cd "$SOURCEDIR"; grep '^short: ' Docs/INFO_SRC |sed -e 's/short: //')"
-DCOMPILATION_COMMENT 值
Percona XtraDB Cluster binary (GPL) $MYSQL_VERSION-$WSREP_VERSION Revision $REVISION
编译Percona-XtraDB-Cluster-5.7.16-27.19
cd /usr/local/src/Percona-XtraDB-Cluster-5.7.16-27.19

cmake ./ -DBUILD_CONFIG=mysql_release \
-DCMAKE_BUILD_TYPE=RelWithDebInfo\
-DWITH_EMBEDDED_SERVER=OFF \
-DFEATURE_SET=community \
-DENABLE_DTRACE=OFF \
-DWITH_SSL=system -DWITH_ZLIB=system \
-DCMAKE_INSTALL_PREFIX="/usr/local/Percona-XtraDB-Cluster" \
-DMYSQL_DATADIR="/apps/data" \
-DMYSQL_SERVER_SUFFIX="27.19" \
-DWITH_INNODB_DISALLOW_WRITES=ON \
-DWITH_WSREP=ON \
-DWITH_UNIT_TESTS=0 \
-DWITH_READLINE=system \
-DWITHOUT_TOKUDB=ON \
-DCOMPILATION_COMMENT="Percona XtraDB Cluster binary (GPL) 5.7.16-27.19, Revision bec0879" \
-DWITH_PAM=ON \
-DWITH_INNODB_MEMCACHED=ON \
-DDOWNLOAD_BOOST=1 \
-DWITH_BOOST="/usr/local/boost" \
-DWITH_SCALABILITY_METRICS=ON
make -j4 && make install
拷贝文件到安装目录
cp -R /usr/local/src/Percona-XtraDB-Cluster-5.7.16-27.19/percona-xtradb-cluster-tests /usr/local/Percona-XtraDB-Cluster/
创建软连接 mysql 系统环境
ln -sf /usr/local/Percona-XtraDB-Cluster/bin/* /usr/sbin/
拷贝启动文件到系统启动目录
cp -R /usr/local/Percona-XtraDB-Cluster/support-files/mysql.server /etc/init.d/mysqld
拷贝监控文件到xinetd管理目录
cp -R /usr/local/Percona-XtraDB-Cluster/xinetd.d/mysqlchk /etc/xinetd.d/
加入动态库
echo "/usr/local/Percona-XtraDB-Cluster/lib" >> /etc/ld.so.conf
ldconfig
4.4 配置MySQL健康检查

vim /etc/xinetd.d/mysqlchk
server          = /usr/bin/clustercheck
修改为如果不修过可以cp /usr/local/Percona-XtraDB-Cluster/bin/clustercheck
到 /usr/bin/
server          = /usr/sbin/clustercheck
vim /etc/services
添加
mysqlchk 9200/tcp # mysqlchk
4.5my.cnf 配置
192.168.1.55
vim /etc/my.cnf
# Template my.cnf for PXC
# Edit to your requirements.
[client]
socket=/apps/data/mysql.sock
port=3306
[mysqld]
user=mysql
server-id=10055
datadir=/apps/data
socket=/apps/data/mysql.sock
log-error=/apps/log/mysqld/mysqld.log
pid-file=/apps/run/mysqld/mysqld.pid
log-bin
log_slave_updates
expire_logs_days=7
port=3306
character_set_server = utf8
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

# Path to Galera library
wsrep_provider=/usr/local/Percona-XtraDB-Cluster/lib/libgalera_smm.so

# Cluster connection URL contains IPs of nodes
#If no IP is found, this implies that a new cluster needs to be created,
#in order to do that you need to bootstrap this node
wsrep_cluster_address='gcomm://192.168.1.55,192.168.1.56,192.168.1.57'
#wsrep_cluster_address=gcomm://

# In order for Galera to work correctly binlog format should be ROW
binlog_format=ROW

# MyISAM storage engine has only experimental support
default_storage_engine=InnoDB

wsrep_sst_receive_address=192.168.1.55:6010

wsrep_node_incoming_address=192.168.1.55

wsrep_provider_options = "gmcast.listen_addr=tcp://192.168.1.55;ist.recv_addr=192.168.1.55:6020;"

# Slave thread to use
wsrep_slave_threads= 8

wsrep_log_conflicts

# This changes how InnoDB autoincrement locks are managed and is a requirement for Galera
innodb_autoinc_lock_mode=2

# Node IP address
wsrep_node_address=192.168.1.55

# Cluster name
wsrep_cluster_name=pxc-cluster

#If wsrep_node_name is not specified,  then system hostname will be used
wsrep_node_name=pxc-cluster-node-1

#pxc_strict_mode allowed values: DISABLED,PERMISSIVE,ENFORCING,MASTER
pxc_strict_mode=ENFORCING

# SST method
wsrep_sst_method=xtrabackup-v2
#wsrep_sst_method=rsync

#Authentication for SST method # 修改自己的创建的账号、密码
wsrep_sst_auth="sstuser:456789"


192.168.1.56
vim /etc/my.cnf
# Template my.cnf for PXC
# Edit to your requirements.
[client]
socket=/apps/data/mysql.sock
port=3307
[mysqld]
user=mysql
server-id=10056
datadir=/apps/data
socket=/apps/data/mysql.sock
log-error=/apps/log/mysqld/mysqld.log
pid-file=/apps/run/mysqld/mysqld.pid
log-bin
log_slave_updates
expire_logs_days=7
port=3307
character_set_server = utf8
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

# Path to Galera library
wsrep_provider=/usr/local/Percona-XtraDB-Cluster/lib/libgalera_smm.so

# Cluster connection URL contains IPs of nodes
#If no IP is found, this implies that a new cluster needs to be created,
#in order to do that you need to bootstrap this node
wsrep_cluster_address='gcomm://192.168.1.55,192.168.1.56,192.168.1.57'
#wsrep_cluster_address=gcomm://

# In order for Galera to work correctly binlog format should be ROW
binlog_format=ROW

# MyISAM storage engine has only experimental support
default_storage_engine=InnoDB

wsrep_sst_receive_address=192.168.1.56:6010

wsrep_node_incoming_address=192.168.1.56

wsrep_provider_options = "gmcast.listen_addr=tcp://192.168.1.56;ist.recv_addr=192.168.1.56:6020;"

# Slave thread to use
wsrep_slave_threads= 8

wsrep_log_conflicts

# This changes how InnoDB autoincrement locks are managed and is a requirement for Galera
innodb_autoinc_lock_mode=2

# Node IP address
wsrep_node_address=192.168.1.56

# Cluster name
wsrep_cluster_name=pxc-cluster

#If wsrep_node_name is not specified,  then system hostname will be used
wsrep_node_name=pxc-cluster-node-2

#pxc_strict_mode allowed values: DISABLED,PERMISSIVE,ENFORCING,MASTER
pxc_strict_mode=ENFORCING

# SST method
wsrep_sst_method=xtrabackup-v2
#wsrep_sst_method=rsync

#Authentication for SST method # 修改自己的创建的账号、密码
wsrep_sst_auth="sstuser:456789"
192.168.1.57
vim /etc/my.cnf
# Template my.cnf for PXC
# Edit to your requirements.
[client]
socket=/apps/data/mysql.sock
port=3307
[mysqld]
user=mysql
server-id=10057
datadir=/apps/data
socket=/apps/data/mysql.sock
log-error=/apps/log/mysqld/mysqld.log
pid-file=/apps/run/mysqld/mysqld.pid
log-bin
log_slave_updates
expire_logs_days=7
port=3307
character_set_server = utf8
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

# Path to Galera library
wsrep_provider=/usr/local/Percona-XtraDB-Cluster/lib/libgalera_smm.so

# Cluster connection URL contains IPs of nodes
#If no IP is found, this implies that a new cluster needs to be created,
#in order to do that you need to bootstrap this node
wsrep_cluster_address='gcomm://192.168.1.55,192.168.1.56,192.168.1.57'
#wsrep_cluster_address=gcomm://

# In order for Galera to work correctly binlog format should be ROW
binlog_format=ROW

# MyISAM storage engine has only experimental support
default_storage_engine=InnoDB

wsrep_sst_receive_address=192.168.1.57:6010

wsrep_node_incoming_address=192.168.1.57

wsrep_provider_options = "gmcast.listen_addr=tcp://192.168.1.57;ist.recv_addr=192.168.1.57:6020;"

# Slave thread to use
wsrep_slave_threads= 8

wsrep_log_conflicts

# This changes how InnoDB autoincrement locks are managed and is a requirement for Galera
innodb_autoinc_lock_mode=2

# Node IP address
wsrep_node_address=192.168.1.57

# Cluster name
wsrep_cluster_name=pxc-cluster

#If wsrep_node_name is not specified,  then system hostname will be used
wsrep_node_name=pxc-cluster-node-3

#pxc_strict_mode allowed values: DISABLED,PERMISSIVE,ENFORCING,MASTER
pxc_strict_mode=ENFORCING

# SST method
wsrep_sst_method=xtrabackup-v2
#wsrep_sst_method=rsync

#Authentication for SST method
wsrep_sst_auth="sstuser:456789" # 修改自己的创建的账号、密码
4.6 初始化数据库
192.168.1.55
初始化数据
mysqld --initialize --user=mysql  --datadir="/apps/data"
启动数据库
/etc/init.d/mysqld start --wsrep-cluster-address="gcomm://"

关闭数据库 MySQL5.7以后都要密码才能进去
/etc/init.d/mysqld stop
安全模式期待MySQL修改密码
mysqld_safe --wsrep-cluster-address=gcomm://  --user=mysql --skip-grant-tables --skip-networking &
use mysql；
update user set authentication_string=Password('123456') where user='root';
flush privileges;
shutdown
exit 退出MySQL
ps -ef | grep mysql
直到MySQL完全关闭 再次启动MySQL
/etc/init.d/mysqld start --wsrep-cluster-address="gcomm://"
进入MySQL 创建同步账号及修改root密码
mysql -u root -p123456
创建MySQL同步账号及密码

GRANT ALL PRIVILEGES  ON *.* TO sstuser@'%' IDENTIFIED BY '456789'; FLUSH PRIVILEGES;
GRANT ALL PRIVILEGES  ON *.* TO sstuser@'localhost' IDENTIFIED BY '456789'; FLUSH PRIVILEGES;
修改root 远程能够连接
GRANT ALL PRIVILEGES ON *.* TO root@'%' IDENTIFIED BY '123456'; FLUSH PRIVILEGES;
创建健康检查数据库账号密码

GRANT PROCESS ON *.* TO 'clustercheckuser'@'localhost' IDENTIFIED BY 'clustercheckpassword!';
如果使用自己账号密码请修改
vim /usr/sbin/clustercheck 对应的账号密码
192.168.1.56 192.168.1.57 其它节点直接启动
service mysqld start

重启第一个节点 192.168.1.55
service mysqld restart 出现错误
/etc/init.d/mysqld bootstrap-pxc 进行启动

启动完成登陆MySQL
mysql -u root -p123456
查看MySQL 节点数
mysql> show global status like 'wsrep_cluster_size';
+--------------------+-------+
| Variable_name      | Value |
+--------------------+-------+
| wsrep_cluster_size | 3     |
+--------------------+-------+
1 row in set (0.00 sec)

mysql> show global status like 'wsrep_incoming_addresses';
+--------------------------+-------------------------------------------------------+
| Variable_name            | Value                                                 |
+--------------------------+-------------------------------------------------------+
| wsrep_incoming_addresses | 192.168.1.57:3307,192.168.1.56:3307,192.168.1.55:3306 |
+--------------------------+-------------------------------------------------------+
1 row in set (0.00 sec)
创建测试数据看看是否同步
mysql> create database test;
Query OK, 1 row affected (0.01 sec)
4.7 数据库健康检查启动
systemctl start  xinetd.service
查看9200端口是否打开
netstat -anlp | grep 9200
tcp6       0      0 :::9200                 :::*                    LISTEN      73323/xinetd
测试端口是否正常
telnet 192.168.1.55 9200

Escape character is '^]'.
HTTP/1.1 200 OK
Content-Type: text/plain
Connection: close
Content-Length: 40

Percona XtraDB Cluster Node is synced.
Connection closed by foreign host.
返回503 首先执行
/usr/sbin/clustercheck
是否返回200 如果不是检查链接数据库的账号密码
返回200正常 就请修改 vim /etc/xinetd.d/mysqlchk
user root
重启systemctl restart  xinetd.service
再次测试如果返回200正常就ok 还是报错就请查看系统日志修复
六、编译安装 haproxy (192.168.1.56,192.168.1.57)
安装 haproxy 日志记录支持
yum -y install rsyslog
解压 haproxy-1.7.0.tar.gz
tar -xvf /usr/local/src/haproxy-1.7.0.tar.gz -C /usr/local/src/
cd /usr/local/src/haproxy-1.7.0
make TARGET=linux31 PREFIX=/usr/local/haproxy
make install PREFIX=/usr/local/haproxy
创建文件夹haproxy
mkdir -pv /usr/local/haproxy/{conf,run,log}
创建haproxy 启动脚本
vim /etc/init.d/haproxy
#! /bin/bash
# chkconfig: - 85 15
# description: haproxy is a World Wide Web server. It is used to serve
PROGDIR=/usr/local/haproxy
PROGNAME=haproxy
DAEMON=$PROGDIR/sbin/$PROGNAME
CONFIG=$PROGDIR/conf/$PROGNAME.conf
PIDFILE=$PROGDIR/run/$PROGNAME.pid
DESC="HAProxy daemon"
SCRIPTNAME=/usr/local/haproxy/init.d/$PROGNAME
# Gracefully exit if the package has been removed.
test -x $DAEMON || exit 0
start()
{
echo -n "Starting $DESC: $PROGNAME"
$DAEMON -f $CONFIG
echo "."
}
stop()
{  echo -n "Stopping $DESC: $PROGNAME"
cat $PIDFILE | xargs kill
echo "."
}

reload()
{ echo -n "reloading $DESC: $PROGNAME"
$DAEMON -f $CONFIG -p $PIDFILE -sf $(cat $PIDFILE)
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
reload)
reload
;;
*)
echo "Usage: $SCRIPTNAME {start|stop|restart|reload}" >&2
exit 1
;;
esac
exit 0
chmod +x  /etc/init.d/haproxy # 可执行权限
创建haproxy.conf
vim /usr/local/haproxy/conf/haproxy.conf
global
log 127.0.0.1   local0
log 127.0.0.1  local1 notice
#log loghost    local0 info
maxconn 50000
chroot /usr/local/haproxy
uid 99
gid 99

daemon
nbproc 2
pidfile /usr/local/haproxy/run/haproxy.pid
#debug
#quiet

defaults
log     global
mode    tcp
option  tcplog
option  dontlognull
option  forwardfor
option  redispatch
retries 3
timeout connect     3000
timeout client      50000
timeout server 50000

frontend admin_stat
bind *:8888
mode http
default_backend stats-back
frontend pxc-front
bind    *:3306
mode    tcp
default_backend pxc-back
frontend pxc-onenode-front
bind *:3308
mode tcp
default_backend pxc-onenode

backend pxc-back
mode    tcp
balance roundrobin
option httpchk
server node1 192.168.1.55:3306 check port 9200 inter 12000 rise 3 fall 3
server node2 192.168.1.56:3307 check port 9200 inter 12000 rise 3 fall 3
server node3 192.168.1.57:3307 check port 9200 inter 12000 rise 3 fall 3
backend pxc-onenode
mode tcp
balance roundrobin
option httpchk
server node1 192.168.1.55:3306 check port 9200 inter 12000 rise 3 fall 3
server node2 192.168.1.56:3307 check port 9200 inter 12000 rise 3 fall 3  backup
server node3 192.168.1.57:3307 check port 9200 inter 12000 rise 3 fall 3  backup
backend stats-back
mode http
balance roundrobin
stats uri /admin?stats
stats auth admin:admin
stats realm Haproxy\ Statistics
Haproxy rsyslog 日志配置
vim /etc/rsyslog.conf
#$ModLoad imudp      修改 $ModLoad imudp
#$UDPServerRun 514  修改 $UDPServerRun 514
#添加 Haproxy  日志记录路径
local0.* /usr/local/haproxy/log/haproxy.log
重启rsyslog
systemctl restart  rsyslog.service
启动Haproxy
service haproxy start
加入开机启动
chkconfig haproxy on
查看haproxy  是否启动
ps -ef | grep haproxy
haproxy 访问端口8888 账号密码 admin:admin http://192.168.1.56:8888/admin?stats http://192.168.1.57:8888/admin?stats




七、编译安装keepalived
安装automake-1.15
tar -xvf /usr/local/src/automake-1.15.tar.gz -C /usr/local/src
cd /usr/local/src/automake-1.15
./configure && make && make install
编译keepalived
tar -xvf /usr/local/src/keepalived-1.3.2.tar.gz -C /usr/local/src
cd /usr/local/src/keepalived-1.3.2
./configure --prefix=/usr/local/keepalived
vmware 虚拟机安装 修改./lib/config.h
HAVE_DECL_RTA_ENCAP 1 修改为HAVE_DECL_RTA_ENCAP 0 如果不修改编译会报错
make && make install
拷贝keepalived 可执行文件到/usr/sbin/
cp /usr/local/keepalived/sbin/keepalived /usr/sbin/
创建keepalived 启动脚本
vim /etc/rc.d/init.d/keepalived
#!/bin/sh
#
# Startup script for the Keepalived daemon
#
# processname: keepalived
# pidfile: /var/run/keepalived.pid
# config: /etc/keepalived/keepalived.conf
# chkconfig: - 21 79
# description: Start and stop Keepalived

# Source function library
. /etc/rc.d/init.d/functions

# Source configuration file (we set KEEPALIVED_OPTIONS there)
. /etc/sysconfig/keepalived

RETVAL=0

prog="keepalived"

start() {
echo -n $"Starting $prog: "
daemon keepalived ${KEEPALIVED_OPTIONS}
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && touch /var/lock/subsys/$prog
}

stop() {
echo -n $"Stopping $prog: "
killproc keepalived
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$prog
}

reload() {
echo -n $"Reloading $prog: "
killproc keepalived -1
RETVAL=$?
echo
}

# See how we were called.
case "$1" in
start)
start
;;
stop)
stop
;;
reload)
;;
restart)
stop
start
;;
condrestart)
if [ -f /var/lock/subsys/$prog ]; then
stop
start
fi
;;
status)
status keepalived
RETVAL=$?
;;
*)
echo "Usage: $0 {start|stop|reload|restart|condrestart|status}"
RETVAL=1
esac

exit $RETVAL
chmod +x /etc/rc.d/init.d/keepalived #keepalived 可执行
配置keepalived
cp /usr/local/keepalived/etc/sysconfig/keepalived  /etc/sysconfig/
创建/etc/keepalived 文件夹
mkdir -p /etc/keepalived
创建/etc/keepalived/keepalived.conf （192.168.1.56）
vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived

global_defs {
notification_email {
admin@test.com    #发生故障时，接受信息的email地址
}
notification_email_from admin@test.com
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}

vrrp_script chk_haproxy {                           #自定义的监控脚本
script "/etc/keepalived/chk_haproxy.sh"
interval 2
weight 2
}

vrrp_instance VI_1 {
state BACKUP                                         #让VIP不抢回
nopreempt
interface eth0                                       #监听接口
virtual_router_id 51
priority 100                                            #优先级，backup机器上的优先级要小与这个值
advert_int 1                                          #检查间隔
authentication {
auth_type PASS
auth_pass 1111
}
track_script {                                        #自定义的监控脚本
chk_haproxy
}
virtual_ipaddress {                              #VIP地址，可以设多个
192.168.4.58/21
}
notify_backup "/etc/init.d/haproxy restart"
notify_fault "/etc/init.d/haproxy stop"
}
创建/etc/keepalived/keepalived.conf （192.168.1.57）
! Configuration File for keepalived

global_defs {
notification_email {
admin@test.com    #发生故障时，接受信息的email地址
}
notification_email_from admin@test.com
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}

vrrp_script chk_haproxy {                           #自定义的监控脚本
script "/etc/keepalived/chk_haproxy.sh"
interval 2
weight 2
}

vrrp_instance VI_1 {
state BACKUP                                         #让VIP不抢回
nopreempt
interface eth0                                       #监听接口
virtual_router_id 51
priority 99                                            #优先级，backup机器上的优先级要小与这个值
advert_int 1                                          #检查间隔
authentication {
auth_type PASS
auth_pass 1111
}
track_script {                                        #自定义的监控脚本
chk_haproxy
}
virtual_ipaddress {                              #VIP地址，可以设多个
192.168.4.58/21
}
notify_backup "/etc/init.d/haproxy restart"
notify_fault "/etc/init.d/haproxy stop"
}
创建/etc/keepalived/chk_haproxy.sh
vim /etc/keepalived/chk_haproxy.sh

#!/bin/bash
if [ $(ps -C haproxy --no-header | wc -l) -eq 0 ];then
/etc/init.d/haproxy start
fi
sleep 2
if [ $(ps -C haproxy --no-header | wc -l) -eq 0 ]; then
/etc/init.d/keepalived stop
fi
chmod +x /etc/keepalived/chk_haproxy.sh #可执行权限


启动 keepalived
192.168.1.56
service keepalived start

ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:1b:50:a3 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.56/21 brd 192.168.7.255 scope global dynamic eth0
valid_lft 44444sec preferred_lft 44444sec
inet 192.168.4.58/21 scope global secondary eth0
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe1b:50a3/64 scope link
valid_lft forever preferred_lft forever
192.168.1.57
service keepalived start
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:63:ae:85 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.57/21 brd 192.168.7.255 scope global dynamic eth0
valid_lft 58142sec preferred_lft 58142sec
inet6 fe80::20c:29ff:fe63:ae85/64 scope link
valid_lft forever preferred_lft forever
关闭 192.168.1.56 keepalived 进程
service keepalived stop
[root@56~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:1b:50:a3 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.56/21 brd 192.168.7.255 scope global dynamic eth0
valid_lft 44258sec preferred_lft 44258sec
inet6 fe80::20c:29ff:fe1b:50a3/64 scope link
valid_lft forever preferred_lft forever
查看 192.168.1.57
[root@57~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:63:ae:85 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.57/21 brd 192.168.7.255 scope global dynamic eth0
valid_lft 57869sec preferred_lft 57869sec
inet 192.168.4.58/21 scope global secondary eth0
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe63:ae85/64 scope link
valid_lft forever preferred_lft forever


其它 keepalived  两个都配置为BACKUP 当第一个出现故障的时候恢复了不用抢占正在
提供服务的IP 服务不会闪断。
haproxy 配置双端口链接 3306 是同时负载3台服务器 3308 只是一台使用当第一台挂掉才会使用第二台。