mysq之配置多实例
1.准备工作sudo su - 使用sudo提权登陆
pkill mysqld 杀掉启动项
ps -ef |grep mysqld查看
rm-f/etc/init.d/mysqld 删除启动项
2.建立文件夹，为多实例配置做准备
mkdir -p /data/{3306,3307}/data 创建两个 3306,3307文件目录。前一个/data ，不要写成这样，会变成/data3306，/data3307.连个文件目录
yum isntalltree -y 安装tree
tree /data/ 查看目录层结构
/data/
├── 3306
│ └── data
└── 3307
└── data
添加mysql5.5多实例my.cnf文件
vi /data/3306/my.cnf 按 ‘i’进入编辑模式 保存 按esc 后输入 ：wq进行保存
port = 3306
socket = /data/3306/mysql.sock
no-auto-rehash
#skip-grant-tables
user = mysql
port = 3306
socket = /data/3306/mysql.sock
basedir = /application/mysql-5.5.32
datadir = /data/3306/data
open_files_limit = 1024
back_log = 600
max_connections = 800
max_connect_errors= 3000
table_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
quick
max_allowed_packet = 2M
log-error = /data/3306/mysql_zexi3306.err
pid_file = /data/3306/mysqld.pid
vi /data/3307/my.cnf 按 ‘i’进入编辑模式 保存 按esc 后输入 ：wq进行保存
添加配置如下：
port = 3307
socket = /data/3307/mysql.sock
no-auto-rehash
user = mysql
port = 3307
socket = /data/3307/mysql.sock
basedir = /application/mysql-5.5.32 ：这个安装位置一定要弄清楚
datadir = /data/3307/data
open_files_limit = 1024
back_log = 600
max_connections = 800
max_connect_errors= 3000
table_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/3307/error.log
#log_slow_queries = /data/3307/slow.log
pid_file = /data/3307/mysql.pid
log-bin = /data/3307/mysql-bin
relay-log = /data/3307/relay-bin
relay-log-info-file = /data/3307/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 = 2
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
quick
max_allowed_packet = 2M
log-error = /data/3307/mysql_zexi3307.err
pid_file = /data/3307/mysqld.pid
多实例启动文件启动mysql
vi /data/3306/mysqld ,脚本内容如下：
############2017y,
###mysql start script
##### ......oldboy vido
#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 "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
vi /data/3307/mysqld ,脚本内容如下：
############2017y,
###mysql start script
##### ......oldboy vido
#init
port=3307
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 "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
# tree /data/
/data/
├── 3306
│ ├── data
│ ├── my.cnf
│ └── mysqld
└── 3307
├── data
├── my.cnf
└── mysqld
3.添加权限
chown -Rmysql.mysql /data/ 修改用户合组为mysql
find /data -type f -name "mysql"|xargs ls-l 查看权限
find /data -type f -name "mysql"|xargschmod +x 为多实例启动项添加执行权限
find /data -type f -name "mysql"|xargs ls-l 查看权限
4.实例
# tail -1 /etc/profile 查看文件的变量
export PATH=/application/mysql/bin:$PATH
cd /application/mysql/scripts/ 进入到目录下配置实例
./mysql_install_db --basedir=/application/mysql --datadir=/data/3306/data --user=mysql 配置3306的实例
./mysql_install_db --basedir=/application/mysql --datadir=/data/3307/data --user=mysql 配置3307的实例
实例怎么看才算是正确的？有这两个ok。
Installing MySQL system tables...
OK
Filling help tables
OK
为什么要初始化？
a.初始化的主要目的是创建基础 的数据库文件，例如：生成mysql库表等
b.初始化后可以查看对应实例数据目录，例如 tree /data/ ，可以看到生成了很多库表。
tree /data/3306/data/ 初始化完成后查看，多出很多东西
5. 启动mysql，并进入数据库
/data/3306/mysql start 启动3306实例
/data/3307/mysql start 启动3307实例
netstat -lntup|grep 330 查看启动项
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 19078/mysqld
tcp 0 0 0.0.0.0:3307 0.0.0.0:* LISTEN 19821/mysqld
mysql-S /data/3306/mysql.sock 登陆数据库
mysql> create database d3306; 添加3306数据库
mysql-S /data/3307/mysql.sock 登陆数据库
mysql> create database d3307; 添加3306数据库
mysql> show databases ; 查看数据库
system mysql -S /data/3306/mysql.sock 使用system命令，进入到3306里去。
mysql> show databases; 是在3306数据库里查询的命令
6.修改多实例数据库密码
/data/3306/mysql stop 停止数据库
/data/3307/mysql stop 停止数据库
停止数据库时，发现停止不了？？？
# /data/3306/mysql stop
Stoping Mysql...
/application/mysql/bin/mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password: YES)'
vi /data/3306/mysql 编辑 mysql启动文件
mysql_pwd="" 把密码置为空
/data/3306/mysql stop 停止3306
vi /data/3307/mysql 编辑 mysql启动文件
mysql_pwd="" 把密码置为空
/data/3307/mysql stop 停止3306
netstat -lntup |grep 330 检查
/data/3306/mysql start 启动3306MySQL数据库
mysqladmin -u root -S /data/3306/mysql.sock passwod 'oldboy123' 修改密码
/data/3307/mysql start 启动3306MySQL数据库
mysqladmin -u root -S /data/3307/mysql.sock passwod 'oldboy123' 修改密码
# netstat -lntup|grep 330 检查启动项
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 20679/mysqld
tcp 0 0 0.0.0.0:3307 0.0.0.0:* LISTEN 21428/mysqld
vi /data/3306/mysql mysql_pwd="oldboy23" 修改启动文件密码
vi /data/3307/mysql mysql_pwd="oldboy23" 修改启动文件密码
find /data/ -type f -name "mysql" -exec chmod 700 {} \; 授权 启动项权限
find /data/ -type f -name "mysql" -exec chown root.root {} \; 授权 启动项用户和组
find /data/ -type f -name "mysql" -exec ls -l {} \; 查看
-rwx------. 1 root root 1148 10月 29 16:50 /data/3307/mysql
-rwx------. 1 root root 1147 10月 29 16:49 /data/3306/mysql
# pkill mysqld 杀掉mysqld
# /data/3306/mysql start 启动
# /data/3307/mysql start 启动
# ss -lntup|grep 330 检查
tcp LISTEN 0 128 *:3306 *:* users:(("mysqld",22216,12))
tcp LISTEN 0 128 *:3307 *:* users:(("mysqld",22957,12))
# /data/3307/mysql stop 停止
# /data/3306/mysql stop 停止
# ss -lntup|grep 330 检查
# /data/3306/mysql start 重新启动
# /data/3307/mysql start 重新启动
# ss -lntup|grep 330 检查
tcp LISTEN 0 128 *:3306 *:* users:(("mysqld",23721,12))
tcp LISTEN 0 128 *:3307 *:* users:(("mysqld",24462,12))
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