shell脚本部署MHA集群

#!/bin/bash
#AUTHOR:AN
#VERSION：1.1.1
#DATE:2019-05-21  
#MODIFY:2019-05-24 2019-05-31
#FUNCTION:MHA高可用集群

#加载配置文件
source /cloud_nsd/conf/mysql.conf
#加载函数库
if [ -f "$Script_Path/myfunction.lib" ];then
  source $Script_Path/myfunction.lib 
else
  echo -e "\033[31m函数库不存在\033[0m"
  exit $NOEXIST
fi
##############################################################

#初始化环境(50秒)
INIT(){
  #实现免密登陆
  bash $Script_Path/Pssh.sh -p
  #安装Perl依赖包
  yum -y install  perl-DBD-mysql  perl-DBI
  yum -y install $Soft_Path/mysql/mha-soft-student/perl-*.rpm
  rpm -ivh $Soft_Path/mysql/mha-soft-student/mha4mysql-node-0.56-0.el6.noarch.rpm   #node节点
}

#修改配置文件，设置半同步，开启binlog日志
CONFIG(){
  cp $Mysql_Conf $Mysql_Conf.bak                    #备份配置文件
  sed -i '/\[mysqld\]/a relay_log_purge=off' $Mysql_Conf        #关闭中继日志自动清除
  sed -i '/\[mysqld\]/a binlog-format="mixed"' $Mysql_Conf  
  sed -i "/\[mysqld\]/a log-bin=$HOSTNAME" $Mysql_Conf
  sed -i "/\[mysqld\]/a server_id=$Server_Id" $Mysql_Conf
  sed -i '/\[mysqld\]/a rpl-semi-sync-slave-enabled=1' $Mysql_Conf    #从库半同步
  sed -i '/\[mysqld\]/a rpl-semi-sync-master-enabled=1' $Mysql_Conf   #主库半同步
  sed -i '/\[mysqld\]/a plugin-load="rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"' $Mysql_Conf  #加载主从半同步模块
}

#选择主库
SELECT_MASTER(){    
  mysql -uroot -p$Mysql_Pwd -e "change master to master_host=$Master_Slave_Ip,master_user=$Master_User,master_password=$Master_Passwd,master_log_file=$Master_Log,master_log_pos=$Master_Pos"
  mysql -uroot -p$Mysql_Pwd -e "start slave"
  Io_Thread=`mysql -uroot -p$Mysql_Pwd -e "show slave status\G" |grep 'Slave_IO_Running' |awk '{print $2}'`
  Sql_Thread=`mysql -uroot -p$Mysql_Pwd -e "show slave status\G" |grep 'Slave_SQL_Running:' |awk '{print $2}'`
  if [ "$Io_Thread" == "Yes" -a "$Sql_Thread" == "Yes" ];then
    cecho 36 "主从同步成功"
  else 
    cecho 31 "主从同步失败"
    exit $ISERROR
  fi
}

##############################################################
#配置主服务器（17秒）
MASTER(){ 
  Float_Ip=`echo $Vip |sed -r 's/(.)(.*)(.)/\2/'`   #浮动IP（192.168.4.100/24）
  ifconfig $Nic:1 $Float_Ip             #在主服务器上配置VIP  
  CONFIG
  systemctl restart mysqld
  #添加客户端访问账户
  mysql -uroot -p$Mysql_Pwd -e "grant insert,select on *.* to $Client_User@$Grant_Net identified by $Client_Pwd"
  #添加管理主机远程连接数据库的用户(监控用户)
  mysql -uroot -p$Mysql_Pwd -e "grant all on *.* to $Moni_User@$Grant_Net identified by $Moni_Passwd"
  #添加主从同步授权用户
  mysql -uroot -p$Mysql_Pwd -e "grant all on *.* to $Master_User@$Grant_Net identified by $Master_Passwd"
  mysql -uroot -p$Mysql_Pwd -e "show grants for $Moni_User" && cecho 36 "监控用户添加成功"
  mysql -uroot -p$Mysql_Pwd -e "show grants for $Master_User" && cecho 36 "同步授权用户添加成功"
  [ $? -ne 0 ] && ERROR MASTER && exit $CONFERROR 
}

#配置备用主服务器（9秒）
BACKUP_MASTER(){
  CONFIG
  systemctl restart mysqld
  SELECT_MASTER && cecho 36 "备用主服务器配置成功"
}

#配置数据备份服务器（9秒）
DATA_BACKUP(){
  cp $Mysql_Conf $Mysql_Conf.bak    #备份配置文件
  sed -i '/\[mysqld\]/a relay_log_purge=off' $Mysql_Conf  
  sed -i "/\[mysqld\]/a server_id=$Server_Id" $Mysql_Conf
  sed -i '/\[mysqld\]/a rpl-semi-sync-slave-enabled=1' $Mysql_Conf
  sed -i '/\[mysqld\]/a plugin-load="rpl_semi_sync_slave=semisync_slave.so"' $Mysql_Conf
  systemctl restart mysqld
  SELECT_MASTER && cecho 36 "数据备份服务器配置成功"
}

#配置管理主机(35)
MANAGER(){  
  Master_Host=`echo $Master_Slave_Ip |sed -r 's/(.)(.*)(.)/\2/'`
  yum -y  install perl-ExtUtils-*   perl-CPAN-*
  CA_TAR $Soft_Path/mysql/mha-soft-student/mha4mysql-manager-0.56.tar.gz    #manager节点
  cd /opt/mha4mysql-manager-0.56
  cecho 32 "安装MHA....."
  perl Makefile.PL && make && make install 
  MKDIR `dirname $Mha_Conf`   #创建目录/etc/mha_manager
  touch $Mha_Conf
  #故障切换脚本
  cp $Soft_Path/mysql/mha-soft-student/master_ip_failover  `dirname $Mha_Conf`
  sed -i "35c my \$vip = $Vip; \# Virtual IP"  `dirname $Mha_Conf`/master_ip_failover   #修改Vip地址
  #写入管理主机的配置文件
  cat >> $Mha_Conf << EOF
[server default]
manager_workdir=`dirname $Mha_Conf`
manager_log=`dirname $Mha_Conf`/manager.log
master_ip_failover_script=`dirname $Mha_Conf`/master_ip_failover

ssh_port=22
ssh_user=root
repl_user=$Master_User
repl_password=$Master_Passwd
user=$Moni_User
password=$Moni_Passwd

[server$Master_ID]
hostname=$Master_Host
candidate_master=1

[server$Bk_Mst1_ID]
candidate_master=1
hostname=$Bk_Mst_Host_1

[server$Bk_Mst2_ID]
candidate_master=1
hostname=$Bk_Mst_Host_2

[server$Data_Bk1_ID]
hostname=$Data_Bk_1
no_master=1
EOF
}

#测试MHA集群
TEST(){
  masterha_check_ssh --conf=$Mha_Conf && masterha_check_repl --conf=$Mha_Conf
  [ $? -eq 0 ] && OK MHA  
# masterha_manager --conf=/etc/mha_manager/app1.cnf --remove_dead_master_conf --ignore_last_failover  #启动管理服务
# masterha_check_status --conf=/etc/mha_manager/app1.cnf  #查看状态  
}

#帮助信息
HELP(){
  cat << EOF
MHA version 1.1.1
Usage: MHA [optional]
=======================================================================
optional arguments:
  -h  提供帮助信息
  -I  初始化环境
  -M  部署主服务器
  -B  部署备用主服务器
  -D  部署数据备份服务器
  -m  部署管理集群主机
  -T  测试集群
EXAMPLE:
  MHA.sh -I 
EOF
}

#############################主程序#############################
[ $# -eq 0 ] && HELP
while getopts :hIMBDmT ARGS
do
  case $ARGS in
  h)
    HELP;;
  I)
    INIT;;
  M)
    MASTER;;
  B)
    BACKUP_MASTER;;
  D)
    DATA_BACKUP;;
  m)
    MANAGER;;
  T)
    TEST;;  
  \?)
    cecho 31 "Invalid option:bash `basename $0` [-h]"
  esac
done