1、之前的脚本有一些局限性，这个脚本是稍微修改了一下的。
#!/bin/bash
#mysql安装包名
MYSQL_VERSION='mysql-5.6.39-linux-glibc2.12-x86_64'
#mysql安装的位置
MYSQL_INSTALL_PATH='/usr/local'
#存放二进制包的路径
SOFTWARE_PATH='/opt/software'
#1 步骤输出 紫色
#2 正确输出 绿色
#3 错误输出 红色
#4 提示输出 蓝色
#5 警告输出 黄色
function echo_fun(){
if [ $# -ge 2 ];then
params_num=$1
shift 1
params_mes=$@
else
echo_fun 3 请至少输入两个参数 echo_fun ..
exit
fi
case $params_num in
1)
echo -e "\033[35;40;1m ***************************** ${params_mes} *****************************\033[0m\r\n"
;;
2)
echo -e "\033[32;40;1m ${params_mes}\033[0m\r\n"
;;
3)
echo -e "\033[31;40;1m ${params_mes}\033[0m\r\n"
;;
4)
echo -e "\033[36;40;1m ${params_mes}\033[0m\r\n"
;;
5)
echo -e "\033[33;40;1m ${params_mes} \033[0m\r\n"
;;
*)
echo_fun 3 参数异常第一个参数应为1,2,3,4,5
;;
esac
}
echo_fun 1 mysql的HA部署安装
#检查是否安装mysql
function check_catalog_exist(){
echo_fun 4 检查$1机器上是否安装了mysql
num=$(ssh $1 test -d $2 && echo 1 || echo 0 )
if [ $num -eq 1 ];then
echo_fun 3 "$1机器上的$2目录存在,请注意检查"
exit
fi
}
#检查是否存在mysql用户
function check_user_mysql(){
echo_fun 4 检查$1机器是否存在mysql用户
num=$(ssh $1 "cat /etc/passwd|grep -w mysql|wc -l" )
if [ $num -eq 1 ];then
echo_fun 3 "$ip机器上的mysql用户已经存在,请注意检查"
exit
else
ssh $1 "useradd mysql"
fi
}
#本地解压,发送到主从机器
function tar_mysql(){
cd ${SOFTWARE_PATH}
tar -xf ${MYSQL_VERSION}.tar.gz -C ${MYSQL_INSTALL_PATH}
ln -s ${MYSQL_INSTALL_PATH}/${MYSQL_VERSION} ${MYSQL_INSTALL_PATH}/mysql
chown -R mysql:mysql ${MYSQL_INSTALL_PATH}/mysql*
cd ${MYSQL_INSTALL_PATH}
chown -R mysql:mysql mysql*
rsync -av mysql ${MYSQL_VERSION} $1:${MYSQL_INSTALL_PATH} >/dev/null 2>&1
echo_fun 2 主机器mysql安装目录已经同步完毕
rsync -av mysql ${MYSQL_VERSION} $2:${MYSQL_INSTALL_PATH} >/dev/null 2>&1
echo_fun 2 从机器mysql安装目录已经同步完毕
echo_fun 4 删除本地的解压包
rm -rf ${MYSQL_INSTALL_PATH}/mysql*
}
#修改主机器上/etc/my.cnf
function alter_master_file(){
ssh -Tq $1 <<remotessh
rm -rf /etc/my.cnf
cd ${MYSQL_INSTALL_PATH}/mysql
cp support-files/my-default.cnf /etc/my.cnf
cp support-files/mysql.server /etc/init.d/mysql.server
sed -i '/mysqld/a\log-bin-index=master-bin.index' /etc/my.cnf
sed -i '/mysqld/a\log-bin=master-bin' /etc/my.cnf
sed -i '/mysqld/a\server-id=1' /etc/my.cnf
exit
remotessh
}
#修改从机器上/etc/my.cnf
function alter_slave_file(){
ssh -Tq $1 <<remotessh
rm -rf /etc/my.cnf
cd ${MYSQL_INSTALL_PATH}/mysql
cp support-files/my-default.cnf /etc/my.cnf
cp support-files/mysql.server /etc/init.d/mysql.server
sed -i '/mysqld/a\relay-log=slave-relay-bin' /etc/my.cnf
sed -i '/mysqld/a\relay-log-index=slave-relay-bin.index' /etc/my.cnf
sed -i '/mysqld/a\server-id=2' /etc/my.cnf
exit
remotessh
}
#初始化数据库
function init_mysql(){
ssh -Tq $1 <<remotessh
cd ${MYSQL_INSTALL_PATH}/mysql
scripts/mysql_install_db --user=mysql >/dev/null 2>&1
/etc/init.d/mysql.server start
exit
remotessh
}
echo_fun 2 请输入master机器ip地址
read -p "master_ip=" master_ip
echo ''
#检查主机器mysql安装目录是否存在
check_catalog_exist ${master_ip} ${MYSQL_INSTALL_PATH}/mysql
#检查主机器mysql的启动用户mysql是否存在
#check_user_mysql ${master_ip}
echo_fun 2 请输入slave机器ip地址
read -p "slave_ip=" slave_ip
echo ''
#检查从机器mysql安装目录是否存在
check_catalog_exist ${slave_ip} ${MYSQL_INSTALL_PATH}/mysql
#检查主机器mysql的启动用户mysql是否存在
#check_user_mysql ${slave_ip}
#开始安装
echo_fun 4 本机解压，然后发送到主从机器上，时间较长请耐心等待
tar_mysql $master_ip $slave_ip
echo_fun 4 修改主mysql的配置文件
alter_master_file $master_ip
echo_fun 2 主机器配置文件修改完毕
echo_fun 4 修改主mysql的配置文件
alter_slave_file $slave_ip
echo_fun 2 从机器配置文件修改完毕
#初始化mysql,并启动
echo_fun 4 初始化主mysql，并启动主mysql
init_mysql $master_ip
echo ''
echo_fun 4 初始化从mysql，并启动从mysql
init_mysql $slave_ip
echo ''
#主mysql设置密码和配置
echo_fun 4 初始化主mysql密码，创建同步master端数据库的用户
echo_fun 2 请输入root用户密码
read -p "root_passwd=" root_passwd
echo ''
echo_fun 2 输入同步master数据库到slave端用户
read -p "replication_user=" r_user
echo ''
echo_fun 2 输入用户密码
read -p "replication_passwd=" r_passwd
ssh -Tq ${master_ip}<<EOF
mysql -uroot <<eof
set password = password("${root_passwd}");
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '${root_passwd}';
GRANT ALL PRIVILEGES ON *.* TO 'root'@localhost IDENTIFIED BY '${root_passwd}';
GRANT REPLICATION SLAVE ON *.* to '${r_user}'@'%' identified by '${r_passwd}';
flush privileges;
eof
EOF
#postion地址，注意这里不能用$ip ""格式 也不能用awk指令，不知道为什么
postion_num=$(ssh -Tq $master_ip <<eof
mysql -uroot -p${root_passwd} -e 'show master status\G' 2>/dev/null|grep Position |cut -f2 -d :
eof
)
#bin-log文件名
log_name=$(ssh -Tq $master_ip <<eof
mysql -uroot -p${root_passwd} -e 'show master status\G' 2>/dev/null|grep File |cut -f2 -d :
eof
)
#从mysql设置密码和配置
ssh -Tq ${slave_ip} <<EOF
mysql -uroot <<eof
set password = password("${root_passwd}");
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '${root_passwd}';
GRANT ALL PRIVILEGES ON *.* TO 'root'@localhost IDENTIFIED BY '${root_passwd}';
change master to master_host='${master_ip}',master_port=3306,master_user='${r_user}',master_password='${r_passwd}', master_log_file='${log_name}',master_log_pos=${postion_num};
start slave;
eof
EOF
#检查是否主从复制搭建成功
running_num=$(ssh -Tq $slave_ip <<eof
mysql -uroot -p${root_passwd} -e "show slave status\G" 2>/dev/null |grep "Running:"|wc -l
eof
)
if [ $running_num -eq 2 ];then
echo_fun 2 "mysql主从复制搭建成功"
else
echo_fun 3 "mysql主从搭建失败"
fi
运行结果：
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