根据单实例进行变更，主要变化文件为my.cnf文件和mysql文件
多实例以端口区分
需要注意下面文件内的端口的更改，和用户密码更改
my.cnf
[client] port = 3306 socket =/data/3306/mysql.sock [mysql] no-auto-rehash [mysqld] user = mysql port = 3306 socket =/data/3306/mysql.sock basedir = /application/mysql datadir = /data/3306/data open_files_limit = 1024 back_log = 600 max_connections = 800 max_connect_errors = 3000 table_open_cache = 614 external-locking = FALSE max_allowed_packet =8M sort_buffer_size = 1M join_buffer_size = 1M thread_cache_size = 100 thread_concurrency = 2 query_cache_size = 2M query_cache_limit = 1M query_cache_min_res_unit = 2k #default_table_type = InnoDB thread_stack = 192K #transaction_isolation = READ-COMMITTED tmp_table_size = 2M max_heap_table_size = 2M long_query_time = 1 #log_long_format #log-error = /data/3306/error.log #log-slow-queries = /data/3306/slow.log pid-file = /data/3306/mysql.pid log-bin = /data/3306/mysql-bin relay-log = /data/3306/relay-bin relay-log-info-file = /data/3306/relay-log.info binlog_cache_size = 1M max_binlog_cache_size = 1M max_binlog_size = 2M expire_logs_days = 7 key_buffer_size = 16M read_buffer_size = 1M read_rnd_buffer_size = 1M bulk_insert_buffer_size = 1M #myisam_sort_buffer_size = 1M #myisam_max_sort_file_size = 10G #myisam_max_extra_sort_file_size = 10G #myisam_repair_threads = 1 #myisam_recover lower_case_table_names = 1 skip-name-resolve slave-skip-errors = 1032,1062 replicate-ignore-db=mysql server-id = 1 innodb_additional_mem_pool_size = 4M innodb_buffer_pool_size = 32M innodb_data_file_path = ibdata1:128M:autoextend innodb_file_io_threads = 4 innodb_thread_concurrency = 8 innodb_flush_log_at_trx_commit = 2 innodb_log_buffer_size = 2M innodb_log_file_size = 4M innodb_log_files_in_group = 3 innodb_max_dirty_pages_pct = 90 innodb_lock_wait_timeout = 120 innodb_file_per_table = 0 [mysqldump] quick max_allowed_packet = 2M [mysqld_safe] log-error=/data/3306/mysql_oldboy3306.err pid-file=/data/3306/mysqld.pid
mysql文件
#!/bin/sh
################################################
#this scripts is created by oldboy at 2007-06-09
#oldboy QQ:31333741
#site:http://www.etiantian.org
#blog:http://oldboy.blog.51cto.com
#oldboy trainning QQ group: 208160987 226199307 44246017
################################################
#init
port=3306
mysql_user="root"
mysql_pwd="oldboy"
CmdPath="/application/mysql/bin"
mysql_sock="/data/${port}/mysql.sock"
#startup function
function_start_mysql()
{
if [ ! -e"$mysql_sock" ];then
printf "StartingMySQL...\n"
/bin/sh${CmdPath}/mysqld_safe --defaults-file=/data/${port}/my.cnf 2>&1 >/dev/null &
else
printf "MySQL isrunning...\n"
exit
fi
}
#stop function
function_stop_mysql()
{
if [ ! -e"$mysql_sock" ];then
printf "MySQL isstopped...\n"
exit
else
printf "StopingMySQL...\n"
${CmdPath}/mysqladmin-u ${mysql_user} -p${mysql_pwd} -S /data/${port}/mysql.sock shutdown
fi
}
#restart function
function_restart_mysql()
{
printf "RestartingMySQL...\n"
function_stop_mysql
sleep 2
function_start_mysql
}
case $1 in
start)
function_start_mysql
;;
stop)
function_stop_mysql
;;
restart)
function_restart_mysql
;;
*)
printf "Usage:/data/${port}/mysql {start|stop|restart}\n"
esac
1、删除/application/mysql/data/的数据
[[email protected] data]# rm -rf * [[email protected] data]# pwd /application/mysql/data [[email protected] data]# [[email protected] data]# ls
2、创建多实例的目录（端口区分）
mkdir /data/{3306,3307}/data -p
3、创建my.cnf mysql文件
[[email protected] 3306]# ls data my.cnf mysql [[email protected] 3306]#
4、复制相关文件my.cnf、mysql 到每个目录下
\cp /data/3306/my.cnf mysql /data/3307/ #保证是下面形式 [[email protected] data]# tree . ├── 3306 │ ├── data │ ├── my.cnf │ └── mysql ├── 3307 ├── data ├── my.cnf └── mysql
5、修改端口号与ID
#修改3307 sed -i ‘s/3306/3307/g‘ /data/3307/my.cnf sed -i ‘s/server-id = 1/server-id = 7/g‘ /data/3307/my.cnf sed -i ‘s/3306/3307/g‘ /data/3307/mysql
6、初始化
cd /application/mysql/scripts ./mysql_install_db --datadir=/data/3306/data--basedir=/application/mysql --user=mysql ./mysql_install_db --datadir=/data/3307/data--basedir=/application/mysql --user=mysql
7、授权
chown -R mysql.mysql /data/ find /data -type f -name mysql|xargs chmod 700
8、开启mysql
/data/3306/mysql start /data/3307/mysql start
9、检查端口
[[email protected] scripts]# netstat -lnt|grep 330 tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:3307 0.0.0.0:* LISTEN
10、加入环境变量和开机自启动
[[email protected] ~]#PATH="$PATH:/application/mysql/bin" [[email protected] ~]# echo‘PATH="$PATH:/application/mysql/bin"‘ >>/etc/profile [[email protected] ~]# . /etc/profile [[email protected] ~]#
11、加入开机自启动
echo "/data/3306/mysql start" >>/etc/rc.local echo "/data/3307/mysql start" >>/etc/rc.local [[email protected] ~]# tail -2 /etc/rc.local /data/3306/mysql start /data/3307/mysql start [[email protected] ~]#
感谢oldboy老师的教导！
时间： 2024-08-03 20:57:24