mysql多实例mysqld_multi方式

mysql多实例应用，亲测直接执行脚本可使用，可快速部署多实例环境

#!/bin/bash
set -e
#定义mysql_multi多实例数据的配置,如需增加,在后面函数对应地方需要增加
mydir=/data/mysql_multi
#mysql sock
my1=mysql3307
my2=mysql3308
#mysql_multi name
mycnf1=mysqld3307
mycnf2=mysqld3308
#mysql port
my1_port=3307
my2_port=3308
#需要安装机器的内网IP
nei_eth=192.168.0.131
#mysql size
pool_size=2048M

#######################分割线，以上内容需要按需修改######################

pack="mysql-5.6.35.tar.gz"
pack_dir="mysql-5.6.35"
conf_file="/usr/local/mysql"

if [ ! -f ${pack} ]
then
    echo "没有找到mysql安装包"
    exit 1
fi

if [ -e /usr/local/mysql* ] || ps -ef | /bin/grep -Ev "$(basename $0)|grep" | /bin/grep -q mysql  
then
    echo "本机可能已安装有mysql,请检查确认！"
    exit 2
fi

if /bin/grep  mysql /etc/passwd || /bin/grep  mysql /etc/group
then
    echo "已存在mysql账户或用户组"
else
    groupadd mysql
    useradd -r -s /sbin/nologin -g mysql mysql
fi

yum remove mysql*
yum -y install  bison-devel ncurses-devel autoconf

tar xf ${pack} 
&& cd ${pack_dir} 
&& echo "configuring..." 
&& cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql -DMYSQL_DATADIR=/usr/local/mysql/data -DSYSCONFDIR=/etc -DWITH_MYISAM_STORAGE_ENGINE=1 -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_MEMORY_STORAGE_ENGINE=1 -DWITH_READLINE=1 -DMYSQL_UNIX_ADDR=/tmp/mysql.sock -DMYSQL_TCP_PORT=3306 -DENABLED_LOCAL_INFILE=1 -DWITH_PARTITION_STORAGE_ENGINE=1 -DEXTRA_CHARSETS=all -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci  >> /opt/make_mysql.txt 
&& echo "making..." 
&& make -j `grep processor /proc/cpuinfo | wc -l` >> /opt/make_mysql.txt 
&& echo "installing..." 
&& make install >> /opt/make_mysql.txt  

if [ "$?" == 0 ];then
    echo "程序安装成功，即将配置并启动" 
else
    echo "mysql安装失败" 
    exit 1
fi

rm -f /opt/make_mysql.txt

chown -R mysql:mysql ${conf_file}
cd ${conf_file}
scripts/mysql_install_db --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --user=mysql
[ -f /etc/my.cnf ] && mv /etc/my.cnf /etc/my.cnf.bak
cp support-files/mysql.server /etc/init.d/mysql
echo "export PATH=$PATH:/usr/local/mysql/bin" >> /etc/profile
source /etc/profile
systemctl enable mysql
systemctl start mysql && echo "OK mysql启动成功"  || echo "lost mysql启动失败"

#配置mysql_multi函数
install_mysql_multi() {
    mkdir -p $mydir/{$my1,$my2}/{mydata,log}
    chown -R mysql:mysql $mydir/{$my1,$my2}
    cd ${conf_file}
    scripts/mysql_install_db --basedir=${conf_file} --datadir=$mydir/$my1/mydata --user=mysql
    scripts/mysql_install_db --basedir=${conf_file} --datadir=$mydir/$my2/mydata --user=mysql

    touch $mydir/{$my1,$my2}/log/log-err.err
    chown -R mysql:mysql $mydir/{$my1,$my2}/log/log-err.err
cat >${conf_file}/my.cnf<<EOF
[client]

[mysqld]

[mysqld_multi]
user=mysql
password=mysql
mysqld = ${conf_file}/bin/mysqld_safe
mysqladmin = ${conf_file}/bin/mysqladmin

[$mycnf1]
socket = /tmp/$my1.sock
port = ${my1_port}
user=mysql
pid-file = $mydir/$my1/mysqld.pid
datadir = $mydir/$my1/mydata
log-bin= $mydir/$my1/log/binlog
server-id = ${my1_port}001
innodb_data_home_dir = $mydir/$my1/mydata
#innodb_data_file_path = ibdata1:12M;ibdata2:100M:autoextend:max:500M
innodb_buffer_pool_size = ${pool_size}
log_error =  $mydir/$my1/log/log-err
expire_logs_days = 5
bind-address = ${nei_eth}
skip-name-resolve

[$mycnf2]
socket = /tmp/$my2.sock
port = ${my2_port}
user=mysql
pid-file = $mydir/$my2/mysqld.pid
datadir = $mydir/$my2/mydata
log-bin= $mydir/$my2/log/binlog
server-id = ${my2_port}001
innodb_data_home_dir = $mydir/$my2/mydata
#innodb_data_file_path = ibdata1:12M;ibdata2:100M:autoextend:max:500M
innodb_buffer_pool_size = ${pool_size}
log_error = $mydir/$my2/log/log-err
expire_logs_days = 5
bind-address    = ${nei_eth}
skip-name-resolve
EOF

#启动各个实例
${conf_file}/bin/mysqld_multi --defaults-file=${conf_file}/my.cnf start ${my1_port},${my2_port}
#授权数据库用户
source /etc/profile
mysql -S /tmp/${my1}.sock <<EOF
SET PASSWORD = PASSWORD('123456');
GRANT ALL  ON *.* TO 'htdb'@"%" IDENTIFIED BY '123456';
GRANT ALL  ON *.* TO 'htdb'@"localhost" IDENTIFIED BY '123456';
flush privileges;
EOF

mysql -S /tmp/${my2}.sock <<EOF
SET PASSWORD = PASSWORD('123456');
GRANT ALL  ON *.* TO 'htdb'@"%" IDENTIFIED BY '123456';
GRANT ALL  ON *.* TO 'htdb'@"localhost" IDENTIFIED BY '123456';
flush privileges;
EOF
}
#调用函数
install_mysql_multi

 PS：

如果mysql启动正常，多实例启动不了，看下err日志报错应该是innodb_data_file_path设置的大小有关，看下mydata下ibdata1的值，然后设置上去应该就好了；

如果是测试环境，可以直接去掉innodb_data_home_dir和innodb_data_file_path；

编了好久终于编译好了这个多实例的脚本，大部分情况下可以直接使用的；

需求不同需要修改一下里面的参数！