mysql5.7.20多实例编译安装

好记性不如烂笔头！

MySQL多实例

实际上就是在同一台服务器上运行多个mysql服务进程。

相同点：公用同一套MySQL安装程序。

不同点：使用不同的配置文件（也可以相同）、启动程序（也可以相同）、数据库文件、端口号。

我理解的是类似同一套tomcat环境跑多个webapp项目，同一套python环境运行多个python程序。

环境准备

操作系统：CentOS release 6.5 (Final)

MySQL版本：5.7.20

一部岛国大片（编译时用）

MySQL5.7.20安装包下载

官网下载 MySQL Community Server 5.7.20

Operating System：Source Code
OS Version：Generic Linux

一种带boost版，一种不带。新版的MySQL都需要安装boost库，如果使用不带boost版的安装包还要单独再下载boost包，网上找了好多，下载地址都是

wget http://downloads.sourceforge.net/project/boost/boost/1.59.0/boost_1_59_0.tar.gz ，但是发现下载非常慢，后来直接下载带boost版的MySQL，将

里面的boost包拷贝出来，用来给不带boost版本的MySQL源码包编译用，其实这样还不如就直接下载带boost版本的MySQL源码包。

瞎扯那么多开始安装。

创建用户

/usr/sbin/groupadd mysql
/usr/sbin/useradd -g mysql mysql

安装boost库　

如果下载的是不带boost版的MySQL源码包，那么需要先安装boost包。我用的mysql-boost-5.7.20.tar.gz里的boost包。

如果下载的是带boost版的mysql源码包，那么这步直接跳转，记住boost包的位置就行了。

wget https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-boost-5.7.20.tar.gz
cd mysql-boost-5.7.20
cp -r ./boost /usr/local

编译MySQL　　

# 安装编译组件
yum install cmake make gcc gcc-c++
# 进入MySQL安装包目录
cd /opt/package/mysql-5.7.20
# 编译MySQL（看着参数挺多，挺牛逼，然而除了前面几个其它的都看不懂）
cmake \
-DCMAKE_INSTALL_PREFIX=/usr/local/mysql \
-DMYSQL_DATADIR=/data/mysql/data \
-DMYSQL_UNIX_ADDR=/data/mysql/data/mysql.sock \
-DMYSQL_TCP_PORT=3306 \
-DSYSCONFDIR=/etc \
-DMYSQL_USER=mysql \
-DWITH_MYISAM_STORAGE_ENGINE=1 \
-DWITH_INNOBASE_STORAGE_ENGINE=1 \
-DWITH_ARCHIVE_STORAGE_ENGINE=1 \
-DWITH_BLACKHOLE_STORAGE_ENGINE=1 \
-DWITH_FEDERATED_STORAGE_ENGINE=1 \
-DWITH_MEMORY_STORAGE_ENGINE=1 \
-DENABLED_LOCAL_INFILE=1 \
-DWITH_EMBEDDED_SERVER=1 \
-DWITH_EDITLINE=bundled \
-DWITH_READLINE=1 \
-DENABLE_DOWNLOADS=1 \
-DWITH_PARTITION_STORAGE_ENGINE=1 \
-DEXTRA_CHARSETS=all \
-DDEFAULT_CHARSET=utf8 \
-DDEFAULT_COLLATION=utf8_general_ci \
-DWITH_DEBUG=0 \
-DENABLE_DTRACE=0 \
-DMYSQL_MAINTAINER_MODE=0 \
-DWITH_SSL:STRING=bundled \
-DWITH_ZLIB:STRING=bundled \
-DDOWNLOAD_BOOST=1 \
-DWITH_BOOST=/user/local/boost #####  注意boost包目录的路径   #####

# 不报错则执行make. 时间很长，虚拟机执行1个多小时。这时候就可以放一部岛国大片，时间长的，看完了，编译也就完成了！
make
# 安装
make install

初始化数据库

# /data/dbdata_3306、/data/dbdata_3307 目录需要事先创建，初始化后会显示初始root密码,记下来登录的时候用，不然你会后悔的！
/usr/local/mysql/bin/mysql_install_db --basedir=/usr/local/mysql --datadir=/data/dbdata_3306 --user=mysql
/usr/local/mysql/bin/mysql_install_db --basedir=/usr/local/mysql --datadir=/data/dbdata_3307 --user=mysql

创建配置文件

vim /data/dbdata_3306/my.cnf
3306配置文件

[client]
port = 3306
socket = /data/dbdata_3306/mysql.sock
[mysqld]
datadir=/data/dbdata_3306/
skip-name-resolve
lower_case_table_names=1
innodb_file_per_table=1
port = 3306
socket = /data/dbdata_3306/mysql.sock
back_log = 50
max_connections = 300
max_connect_errors = 1000
table_open_cache = 2048
max_allowed_packet = 16M
binlog_cache_size = 2M
max_heap_table_size = 64M
sort_buffer_size = 2M
join_buffer_size = 2M
thread_cache_size = 64
#thread_concurrency = 8
query_cache_size = 64M
query_cache_limit = 2M
ft_min_word_len = 4
default-storage-engine = innodb
thread_stack = 192K
transaction_isolation = REPEATABLE-READ
tmp_table_size = 64M
log-bin=mysql-bin
binlog_format=mixed
slow_query_log
long_query_time = 1
server-id = 1
key_buffer_size = 8M
read_buffer_size = 2M
read_rnd_buffer_size = 2M
bulk_insert_buffer_size = 64M
myisam_sort_buffer_size = 128M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1
#myisam_recover
#innodb_additional_mem_pool_size = 16M
innodb_buffer_pool_size = 200M
innodb_data_file_path = ibdata1:10M:autoextend
#innodb_file_io_threads = 8
innodb_thread_concurrency = 16
innodb_flush_log_at_trx_commit = 1
innodb_log_buffer_size = 16M
innodb_log_file_size = 512M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 60
innodb_lock_wait_timeout = 120
[mysqldump]
quick
max_allowed_packet = 256M
[mysql]
no-auto-rehash
prompt=\\u@\\d \\R:\\m>
[myisamchk]
key_buffer_size = 512M
sort_buffer_size = 512M
read_buffer = 8M
write_buffer = 8M
[mysqlhotcopy]
interactive-timeout
[mysqld_safe]
open-files-limit = 8192

vim /data/dbdata_3307/my.cnf
3307配置文件

[client]
port = 3307
socket = /data/dbdata_3307/mysql.sock
[mysqld]
datadir=/data/dbdata_3307/
skip-name-resolve
lower_case_table_names=1
innodb_file_per_table=1
port = 3307
socket = /data/dbdata_3307/mysql.sock
back_log = 50
max_connections = 300
max_connect_errors = 1000
table_open_cache = 2048
max_allowed_packet = 16M
binlog_cache_size = 2M
max_heap_table_size = 64M
sort_buffer_size = 2M
join_buffer_size = 2M
thread_cache_size = 64
#thread_concurrency = 8
query_cache_size = 64M
query_cache_limit = 2M
ft_min_word_len = 4
default-storage-engine = innodb
thread_stack = 192K
transaction_isolation = REPEATABLE-READ
tmp_table_size = 64M
log-bin=mysql-bin
binlog_format=mixed
slow_query_log
long_query_time = 1
server-id = 1
key_buffer_size = 8M
read_buffer_size = 2M
read_rnd_buffer_size = 2M
bulk_insert_buffer_size = 64M
myisam_sort_buffer_size = 128M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1
#myisam_recover
#innodb_additional_mem_pool_size = 16M
innodb_buffer_pool_size = 200M
innodb_data_file_path = ibdata1:10M:autoextend
#innodb_file_io_threads = 8
innodb_thread_concurrency = 16
innodb_flush_log_at_trx_commit = 1
innodb_log_buffer_size = 16M
innodb_log_file_size = 512M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 60
innodb_lock_wait_timeout = 120
[mysqldump]
quick
max_allowed_packet = 256M
[mysql]
no-auto-rehash
prompt=\\u@\\d \\R:\\m>
[myisamchk]
key_buffer_size = 512M
sort_buffer_size = 512M
read_buffer = 8M
write_buffer = 8M
[mysqlhotcopy]
interactive-timeout
[mysqld_safe]
open-files-limit = 8192

创建自启动文件

vim /data/dbdata_3306/mysqld

3306启动文件

#!/bin/bash
mysql_port=3306
mysql_username="root"
mysql_password="123.com" # 注意：密码改成初始化数据库后修改的密码。
function_start_mysql()
{
printf "Starting MySQL...\n"
/bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/data/dbdata_${mysql_port}/my.cnf 2>&1 > /dev/null &
}
function_stop_mysql()
{
printf "Stoping MySQL...\n"
/usr/local/mysql/bin/mysqladmin -u ${mysql_username} -p${mysql_password} -S /data/dbdata_${mysql_port}/mysql.sock shutdown
}
function_restart_mysql()
{
printf "Restarting MySQL...\n"
function_stop_mysql
function_start_mysql
}
function_kill_mysql()
{
kill -0 $(ps -ef | grep 'bin/mysqld_safe' | grep ${mysql_port} | awk '{printf $2}')
kill -0 $(ps -ef | grep 'bin/mysqld' | grep ${mysql_port} | awk '{printf $2}')
}
case $1 in
start)
function_start_mysql;;
stop)
function_stop_mysql;;
kill)
function_kill_mysql;;
restart)
function_stop_mysql
function_start_mysql;;
*)
echo "Usage: /data/dbdata_${mysql_port}/mysqld {start|stop|restart|kill}";;
esac

vim /data/dbdata_3307/mysqld
3307启动文件

#!/bin/bash
mysql_port=3307
mysql_username="root"
mysql_password="123.com" # 注意：密码改为初始化数据库后修改的密码。
function_start_mysql()
{
printf "Starting MySQL...\n"
/bin/sh /usr/local/mysql/bin/mysqld_safe --defaults-file=/data/dbdata_${mysql_port}/my.cnf 2>&1 > /dev/null &
}
function_stop_mysql()
{
printf "Stoping MySQL...\n"
/usr/local/mysql/bin/mysqladmin -u ${mysql_username} -p${mysql_password} -S /data/dbdata_${mysql_port}/mysql.sock shutdown
}
function_restart_mysql()
{
printf "Restarting MySQL...\n"
function_stop_mysql
function_start_mysql
}
function_kill_mysql()
{
kill -0 $(ps -ef | grep 'bin/mysqld_safe' | grep ${mysql_port} | awk '{printf $2}')
kill -0 $(ps -ef | grep 'bin/mysqld' | grep ${mysql_port} | awk '{printf $2}')
}
case $1 in
start)
function_start_mysql;;
stop)
function_stop_mysql;;
kill)
function_kill_mysql;;
restart)
function_stop_mysql
function_start_mysql;;
*)
echo "Usage: /data/dbdata_${mysql_port}/mysqld {start|stop|restart|kill}";;
esac

启动3306、3307的MySQL

注意：如果启动报配置文件错误，那么哪行报错就在配置文件里注释哪行。

/data/dbdata_3306/mysqld start
/data/dbdata_3307/mysqld start　　

重置root初始密码

两种方法：

（1）通过mysqladmin修改

# mysql5.7之后的版本在安装后需要重置root初始密码，初始密码在初始化数据库的时候显示。如果你忘了，那么恭喜你，可以用跳过表权限--skip-grant-tables的方式启动MySQL。
/usr/local/mysql/bin/mysqladmin -uroot password '初始密码' -S /data/dbdata_3306/mysql.sock
/usr/local/mysql/bin/mysqladmin -uroot password '初始密码' -S /data/dbdata_3307/mysql.sock　　

（2）使用MySQL命令修改root密码（忘记了初始密码时可以用这招）

-- MySQL5.7.20 要求安装以后第一登录必须先重置初始密码，否则无法执行任何SQL命令
/*
  特别提醒注意的一点是，5.7新版的mysql数据库下的user表中已经没有Password字段了
  而是将加密后的用户密码存储于authentication_string字段
*/
update mysql.user set authentication_string=password('123.com') where user='root' and Host = 'localhost'; -- 5.7.20 新版本修改方式
update mysql.user set password=password('123.com') where user='root' and Host = 'localhost'; --老版本修改方式
flush privileges;
quit;

设置MySQL环境变量

echo 'export PATH=/usr/local/mysql/bin:$PATH' >> /etc/profile
source /etc/profile　　

设置开机启动

echo '/data/dbdata_3306/mysqld start' >> /etc/rc.local
echo '/data/dbdata_3307/mysqld start' >> /etc/rc.local

登录

mysql -uroot -p123.com -S /data/dbdata_3306/mysql.sock # 登录3306
mysql -uroot -p123.com -S /data/dbdata_3307/mysql.sock # 登录3307

注意：

1.忘记初始密码
如果忘记了初始密码可以去用户家目录下的.mysql_secret查看，当然只能看到第二个实例的安装密码。第一个实例的密码被覆盖了，需要以 mysqld_safe --skip-grant-tables & 启动MySQL修改密码。

[root@mysql ~]# more ~/.mysql_secret
# Password set for user 'root@localhost' at 2018-03-27 06:51:10
z>lgk=X7d2o>

感谢oldboy，感谢各路大神！

http://blog.chinaunix.net/uid-20639775-id-3438560.html

http://blog.51cto.com/lisea/1941788

https://www.guonanjun.com/22.html

多实例启动、二进制安装

https://www.jianshu.com/p/a6dc8d4a3a40

5.7.20 带boost版本编译安装