-----------MySQL多实例配置文件
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[root@db01/]# cat /data/3307/my.cnf
[client]
port = 3307 #<==端口号，可修改
socket = /data/3307/mysql.sock
[mysql]
no-auto-rehash
[mysqld]
user = mysql #<==所属用户，根据实际情况而定
port = 3307 #<==端口号，可修改
socket = /data/3307/mysql.sock #<== 指定socket文件位置
basedir = /application/mysql #<== 安装程序目录
datadir = /data/3307/data #<== mysql数据文件目录
open_files_limit = 1024 #<== 文件描述符限制
back_log = 600 #<== 系统预处理等待队列连接数量
max_connections = 800 #<== 最大连接数
max_connect_errors = 3000 #<== 最大错误数
table_cache = 614 #<== 表缓存
external-locking = FALSE #<== 外部锁
max_allowed_packet =8M #<== 最大允许的包大小
sort_buffer_size = 1M #<== 排序缓冲大小
join_buffer_size = 1M #<== 连接缓冲大小
thread_cache_size = 100 #<== 线程缓存数量
thread_concurrency = 2 #<== 线程并发量
query_cache_size = 2M #<== 请求缓存大小
query_cache_limit = 1M #<== 请求缓存限制大小
query_cache_min_res_unit = 2k #<== 请求缓存最小保留单元大小
#default_table_type = InnoDB
thread_stack = 192K #<== 线程数大小
#transaction_isolation = READ-COMMITTED
tmp_table_size = 2M #<== 临时表大小
max_heap_table_size = 2M #<== 最大堆表大小
#long_query_time = 1 #<== 长请求时间1s
#log_long_format
#log-error = /data/3307/error.log #<== 错误日志
#log-slow-queries = /data/3307/slow.log #<== man查询日志
pid-file = /data/3307/mysql.pid #<== pid文件位置
#log-bin = /data/3307/mysql-bin #<== binlog开启及位置
relay-log = /data/3307/relay-bin #<== relaylog开启及位置
relay-log-info-file = /data/3307/relay-log.info #<== reloylog信息文件
binlog_cache_size = 1M #<== binlog缓存大小
max_binlog_cache_size = 1M #<== 最大binlog缓存大小
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 #<== 忽略表名大小写
skip-name-resolve #<== 跳过名称解析
slave-skip-errors = 1032,1062 #<== 主从同步，从库错误忽略代码列表
replicate-ignore-db=mysql #<== 复制忽略数据库：mysql
server-id = 3 #<== 设置server-id 主从复制不能一样
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/3307/mysql_3307.err #<== 日志文件
pid-file=/data/3307/mysqld.pid
------------------------------------------------------------------------------------------------------------------------------------
-----------mysql多实例启动文件
[root@db01/]# cat /data/3308/mysql
#!/bin/sh
################################################
#this scripts iscreated by tudou at 2016-06-09
#tudou QQ:1097857032 1+1=3
#blog:https://blog.51cto.com/user_index.php?action=addblog_new
################################################
#init
port=3307
mysql_user="root"
mysql_pwd="123456" #<==设定的密码
CmdPath="/application/mysql/bin"
mysql_sock="/data/${port}/mysql.sock" #<== 进入多实例数据库需要mysql.sock
#startup function
function_start_mysql()
{
if [ ! -e "$mysql_sock" ];then
printf "Starting MySQL...\n"
/bin/sh ${CmdPath}/mysqld_safe--defaults-file=/data/${port}/my.cnf 2>&1 > /dev/null &
else
printf "MySQL is running...\n"
exit
fi
}
#stop function
function_stop_mysql()
{
if [ ! -e "$mysql_sock" ];then
printf "MySQL is stopped...\n"
exit
else
printf "Stoping MySQL...\n"
${CmdPath}/mysqladmin -u ${mysql_user}-p${mysql_pwd} -S /data/${port}/mysql.sock shutdown
fi
}
#restart function
function_restart_mysql()
{
printf "Restarting MySQL...\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
######################################################################################
-----------通过以上配置启动mysql数据库后生成的文件如下：
mysql-bin.000001 #<== mysql数据库的操作日志（加密）
mysql-bin.index #<== mysql数据库操作日志的索引文件
mysqld.pid #<== 3307数据库的进程号文件
mysql_3307.err #<== 3307的错误日志·文件
mysql.sock #<== 启动服务的套接字文件
注意：当数据强制关机会导致状态显示启动，实际并没有运行的状态，遇见此种状态将mysql.sock文件改革名字，然后重新启动数据库即可，它会生成新的mysql.sock文件
