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mysql二进制安装，升级，多实例部署

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目标
  • 理解线上部署考虑的因素
  • 学会编译安装以及二进制安装mysql
  • 学会升级mysql
  • 学会多实例部署mysql数据库
  • 学会合理部署mysql线上库
 
考虑因素：
  • 版本选择，5.1,5.5还是5.6？
  • 分支选择，官方社区版？percona server？mariadb?
    • 推荐官方版，简单易上手
  • 安装方式，包安装？二进制包安装？源码安装？
    • 线上推荐二进制包安装
  • 路径配置，参数配置（尽量模板化，标准化）
  • 一个实例多个库，or多个实例单个库？
 
二进制安装mysql
 
  1. 下载软件安装包
  2. 解压放到指定目录（比如/usr/local）并将mysql目录放到PATH中
  3. 初始化实例，编辑配置文件 并启动
  4. 账号安全设置
 
 
1)下载
 
2)解压到指定目录，并将mysql目录放到PATH中
 
#tar -zxf mysql-5.5.50-linux2.6-i686.tar.gz
#mv mysql-5.5.50-linux2.6-i686  /usr/local/
#cd /usr/local
#mv mysql-5.5.50-linux2.6-i686 mysql55
#cd mysql55/bin
#export PATH=/usr/local/mysql55/bin:$PATH

 

3)初始化实例 使用脚本mysql_install_db
 
#mkdir -p /tmp/mysqldata/node1
#/usr/local/mysql55/script/mysql_install_db --user=mysql --basedir=/usr/local/mysql55 --datadir=/tmp/mysqldata/node1
#cd /tmp/mysqldata/node1

 

出现问题1 没有libaio.so.1库
/tmp/mysql55/bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared objectfile: No such file or directory

 

解决：查询libaio库并按照libaio.so.1
查询
aiapple@aiapple:/tmp$ sudo apt-cache search libaio
libaio-dev - Linux kernel AIO access library - development files
libaio1 - Linux kernel AIO access library - shared library
libaio1-dbg - Linux kernel AIO access library - debugging symbols
安装
aiapple@aiapple:/tmp$ sudo apt-get install libaio1

 

初始化成功：
aiapple@aiapple:/usr/local/mysql/data$ ls -l /tmp/mysqldata/node1/
total 12
drwx------ 2 aiapple aiapple 4096  7月 2721:27 mysql
drwx------ 2 aiapple aiapple 4096  7月 2721:27 performance_schema
drwx------ 2 aiapple aiapple 4096  7月 2721:25 test

 

拷贝配置文件：support-files中拷贝my-medium.cnf
                cp /usr/local/mysql56/support-files/my-medium.cnf /tmp/mysqldata

 

3)使用mysqld_safe脚本，启动
/usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf &

 

问题2：没有/usr/local/mysql/data 目录
技术分享 技术分享 
aiapple@aiapple:/usr/local/mysql55/support-files$ /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf &
[1] 3349
aiapple@aiapple:/usr/local/mysql55/support-files$ 16072721:33:26 mysqld_safe Logging to ‘/usr/local/mysql/data/aiapple.err‘.
touch: cannot touch ‘/usr/local/mysql/data/aiapple.err’: No such file or directory
chmod: cannot access ‘/usr/local/mysql/data/aiapple.err’: No such file or directory
16072721:33:26 mysqld_safe The file /usr/local/mysql/bin/mysqld
does not exist or is not executable. Please cd to the mysql installation
directory and restart this script from there as follows:
./bin/mysqld_safe&
See http://dev.mysql.com/doc/mysql/en/mysqld-safe.html for more information
/usr/local/mysql55/bin/mysqld_safe: 128: /usr/local/mysql55/bin/mysqld_safe: cannot create /usr/local/mysql/data/aiapple.err: Directory nonexistent
^C
[1]+  Exit 1                  /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf
View Code

 

解决：创建目录并赋权
aiapple@aiapple:/usr/local$ sudomkdir -p mysql/data
aiapple@aiapple:/usr/local/mysql$ sudochown -R aiapple .
aiapple@aiapple:/usr/local/mysql$ sudochgrp -R aiapple .

 

问题3：不存/usr/local/mysql/bin/mysqld 文件
技术分享 技术分享 
aiapple@aiapple:/usr/local/mysql$ /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf &
[1] 3773
aiapple@aiapple:/usr/local/mysql$ 16072721:37:32 mysqld_safe Logging to ‘/usr/local/mysql/data/aiapple.err‘.
16072721:37:32 mysqld_safe The file /usr/local/mysql/bin/mysqld
does not exist or is not executable. Please cd to the mysql installation
directory and restart this script from there as follows:
./bin/mysqld_safe&
See http://dev.mysql.com/doc/mysql/en/mysqld-safe.html for more information
^C
[1]+  Exit 1                  /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf
View Code

 

怀疑 Ubuntu定死了basedir 在/usr/local/mysql 下
解决：拷贝mysql55中内容到该目录中
aiapple@aiapple:/usr/local/mysql$ cp -ar ../mysql55/* .

 

问题4：mysqld从 /usr/local/mysql/data中启动库文件；
技术分享 技术分享 
aiapple@aiapple:/usr/local/mysql$ /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf &
[1] 3983
aiapple@aiapple:/usr/local/mysql$ 16072721:39:05 mysqld_safe Logging to ‘/usr/local/mysql/data/aiapple.err‘.
16072721:39:05 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
16072721:39:07 mysqld_safe mysqld from pid file /usr/local/mysql/data/aiapple.pid ended
 
[1]+  Done                    /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf
且mysqld没有启动
aiapple@aiapple:~$ ps -ef | grep mysqld
aiapple   21292097019:35 pts/200:00:00grep --color=auto mysqld
View Code

 

 
查看aiapple.err:需要的一些表不在/usr/local/mysql/data
技术分享 技术分享 
                    160727
                    21:41:59 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
16072721:41:59 [Note] /usr/local/mysql/bin/mysqld (mysqld 5.5.50-log) starting as process 4500 ...
16072721:41:59 [Note] Plugin ‘FEDERATED‘ is disabled.
/usr/local/mysql/bin/mysqld: Table ‘mysql.plugin‘ doesn‘t exist16072721:41:59 [ERROR] Can‘t open the mysql.plugin table. Please run mysql_upgrade to create it.16072721:41:59 InnoDB: The InnoDB memory heap is disabled
16072721:41:59 InnoDB: Mutexes and rw_locks use GCC atomic builtins
16072721:41:59 InnoDB: Compressed tables use zlib 1.2.316072721:41:59 InnoDB: Using Linux native AIO
16072721:41:59 InnoDB: Initializing buffer pool, size = 128.0M16072721:41:59 InnoDB: Completed initialization of buffer pool
16072721:41:59 InnoDB: highest supported file format is Barracuda.
InnoDB: Log scan progressed past the checkpoint lsn 4894116072721:41:59  InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
InnoDB: Doing recovery: scanned up to log sequence number 159567516072721:41:59  InnoDB: Starting an apply batch of log records to the database...
InnoDB: Progress in percents: 282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899
InnoDB: Apply batch completed
16072721:41:59  InnoDB: Waiting for the background threads to start
16072721:42:00 InnoDB: 5.5.50 started; log sequence number 159567516072721:42:00 [Note] Recovering after a crash using mysql-bin
16072721:42:00 [Note] Starting crash recovery...
16072721:42:00 [Note] Crash recovery finished.
16072721:42:00 [Note] Server hostname (bind-address): ‘0.0.0.0‘; port: 330616072721:42:00 [Note]   - ‘0.0.0.0‘ resolves to ‘0.0.0.0‘;
16072721:42:00 [Note] Server socket created on IP: ‘0.0.0.0‘.
16072721:42:00 [ERROR] Fatal error: Can‘t open and lock privilege tables: Table ‘mysql.host‘ doesn‘t exist
16072721:42:00 mysqld_safe mysqld from pid file /usr/local/mysql/data/aiapple.pid ended
View Code
 
解决：将原初始化的datadir目录中所有拷贝过去
aiapple@aiapple:/usr/local/mysql/data$ rm -rf test/
aiapple@aiapple:/usr/local/mysql/data$ cp -ar /tmp/mysqldata/node1/* .
 
成功安装：
技术分享 技术分享 
aiapple@aiapple:/usr/local/mysql/data$ ps -ef | grep mysqld
aiapple   45362146021:43 pts/000:00:00 /bin/sh /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf
aiapple   47734536121:43 pts/000:00:00 /usr/local/mysql/bin/mysqld --defaults-file=/tmp/mysqldata/my.cnf --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --log-error=/usr/local/mysql/data/aiapple.err --pid-file=/usr/local/mysql/data/aiapple.pid --socket=/tmp/mysql.sock --port=3306
aiapple   47922097021:44 pts/200:00:00grep --color=auto mysqld
View Code

 

疑问：
不知是Ubuntu指定了basedir=/usr/local/mysql,datadir=/usr/local/mysql/data;还是最开始的初始化没有管用，还是有什么配置没有写在配置文件中。
 
当然是没有写在配置文件中了，可以查看一下my-medium.cnf内容
技术分享 技术分享 
                        [client]
#password       = your_password
port            = 3306
socket          = /tmp/mysql.sock
 
# Here follows entries for some specific programs
 
# The MySQL server
[mysqld]
port            = 3306
socket          = /tmp/mysql.sock
skip-external-locking
key_buffer_size = 16M
max_allowed_packet = 1M
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
View Code
没有相关目录的配置；
 
 
在my.cnf 增加一下配置
技术分享 技术分享 
                    my.cnf
port            = 3306
socket          = /tmp/mysqldata/node1/mysql.sock
 
[mysqld_safe]
user=aiapple
 
# Here follows entries for some specific programs
 
# The MySQL server
[mysqld]
port            = 3306
socket          = /tmp/mysqldata/node1/mysql.sock
pid-file        = /tmp/mysqldata/node1/mysqld.pid
basedir         = /usr/local/mysql55
datadir         = /tmp/mysqldata/node1
innodb_data_home_dir = /tmp/mysqldata/node1
innodb_log_group_home_dir =/tmp/mysqldata/node1
tmpdir          = /tmp/mysqldata/node1
log-error       = /tmp/mysqldata/node1/aiapple.log
log-bin         = /tmp/mysqldata/node1/mysql-bin.log
View Code

 

重新启动
问题一：配置文件权限太大
aiapple@aiapple:/usr/local/mysql$ /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf &
Warning: World-writable config file‘/tmp/mysqldata/my.cnf‘ is ignored
解决：降权
aiapple@aiapple:sudochmod600 /tmp/mysqldata/my.cnf

 

问题二：bin目录未指定
aiapple@aiapple:/usr/local/mysql$ /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf &
16080616:07:29 mysqld_safe The file /usr/local/mysql/bin/mysqld does not exist or is not executable. Please cd to the mysql installation
directory and restart this script from there as follows: ./bin/mysqld_safe&

 

解决：在配置文件中通过ledir指定bin目录
                #my.cnf增加
ledir  =  /usr/local/mysql55

 

问题三：aiapple.err报错，插件被禁止
技术分享 技术分享 
                    160806
                    16:48:46 [Note] Plugin ‘FEDERATED‘ is disabled.
16080616:48:46 InnoDB: The InnoDB memory heap is disabled
16080616:48:46 InnoDB: Mutexes and rw_locks use GCC atomic builtins
16080616:48:46 InnoDB: Compressed tables use zlib 1.2.316080616:48:46 InnoDB: Using Linux native AIO
16080616:48:46 InnoDB: Initializing buffer pool, size = 128.0M
View Code
解决：在配置文件中启用，nice=0
                #my.cnf增加

                nice  =  0

 

4)账号安全设置
 
#删除空用户
mysql -uroot --socket=/tmp/mysql.sock
select user,host,password from mysql.user;
delete from mysql.user where user=‘‘;
delete from mysql.user where host<>‘localhost‘;
 
mysql> select user,host,password from mysql.user;
+------+-----------+----------+
| user | host      | password |
+------+-----------+----------+
| root | localhost |          |
+------+-----------+----------+
1 row in set (0.00 sec)

 

#设置root密码
mysql> set password for root@‘localhost‘=password(‘000000‘);
Query OK, 0 rows affected (0.00 sec)
 
#使设置生效
flush privileges;
 
#删除test库
 
看看只读权限的test用户能用test库做什么
                创建test用户
#mysql -uroot -p123456--socket=/tmp/mysql.sock
grant select on *.* to test@‘localhost‘ identified by ‘123‘;
 
使用test用户，在test库中建表
#mysql -utest -p123 --socket=/tmp/mysql.sock
use test
create table t1(idint);
mysql> show tables;
+----------------+
| Tables_in_test |
+----------------+
| t1             |
+----------------+
1 row in set (0.01 sec)

 

删除test库
mysql> drop database test;
Query OK, 1 row affected (0.01 sec)

 

 
 
 
mysql升级
 
从5.5升级到5.6
  1. 下载mysql5.6安装包并配置mysql5.6安装包安装路径
  2. 关闭mysql5.5的实例，修改部分参数，使用mysql5.6软件启动
  3. 执行mysql5.6路径下mysql_upgrade脚本
  4. 验证是否成功升级
MySQL升级
 
1)关闭mysql
查看mysql是否启动
aiapple@aiapple:/tmp/mysqldata$ ps -ef | grep mysqld
aiapple   49312146022:32 pts/000:00:00 /bin/sh /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf
aiapple   51684931022:32 pts/000:00:00 /usr/local/mysql/bin/mysqld --defaults-file=/tmp/mysqldata/my.cnf --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --log-error=/usr/local/mysql/data/aiapple.err --pid-file=/usr/local/mysql/data/aiapple.pid --socket=/tmp/mysql.sock --port=3306
aiapple   51874889022:33 pts/1300:00:00grep --color=auto mysqld

 

使用mysqladmin工具关闭mysql服务
aiapple@aiapple:/usr/local/mysql$ mysqladmin -uroot --socket=/tmp/mysql.sock shutdown -p
Enter password:
16072722:28:46 mysqld_safe mysqld from pid file /usr/local/mysql/data/aiapple.pid ended
[1]+  Done                    /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf  (wd: /usr/local/mysql/data)
(wd now: /usr/local/mysql)

 

检查是否关闭
aiapple@aiapple:/usr/local/mysql$ ps -ef | grep mysqld
aiapple   49182146022:28 pts/000:00:00grep --color=auto mysqld

 

2)更改my.cnf
#vim my.cnf(把55目录都改成56的)

 

3）使用mysql5.6启动软件；
#使用5.6拉起实例
aiapple@aiapple:/tmp/mysqldata$ /usr/local/mysql56/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf &
[1] 9121
aiapple@aiapple:/tmp/mysqldata$ 16080621:29:11 mysqld_safe Logging to ‘/tmp/mysqldata/node1/aiapple.log‘.
16080621:29:11 mysqld_safe Starting mysqld daemon with databases from /tmp/mysqldata/node1

 

#查看mysqld进程有没有起来
aiapple@aiapple:/tmp/mysqldata$ ps -ef | grep mysql
aiapple   91218547021:29 pts/200:00:00 /bin/sh /usr/local/mysql56/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf
aiapple   94899121021:29 pts/200:00:00 /usr/local/mysql56/bin/mysqld --defaults-file=/tmp/mysqldata/my.cnf --basedir=/usr/local/mysql56 --datadir=/tmp/mysqldata/node1 --plugin-dir=/usr/local/mysql56/lib/plugin --log-error=/tmp/mysqldata/node1/aiapple.log --pid-file=/tmp/mysqldata/node1/mysqld.pid --socket=/tmp/mysqldata/node1/mysql.sock --port=3306
aiapple   95648547021:35 pts/200:00:00grep --color=auto mysql

 

#登陆后查看mysql状态
技术分享 技术分享 
mysql> status
--------------
mysql  Ver 14.14 Distrib 5.6.32, for linux-glibc2.5 (x86_64) using  EditLine wrapper
 
Connection id:        3
Current database:   
Current user:        root@localhost
SSL:            Not in use
Current pager:        stdout
Using outfile:        ‘‘
Using delimiter:    ;
Server version:        5.6.32-log MySQL Community Server (GPL)
Protocol version:    10
Connection:        Localhost via UNIX socket
Server characterset:    latin1
Db     characterset:    latin1
Client characterset:    utf8
Conn.  characterset:    utf8
UNIX socket:        /tmp/mysqldata/node1/mysql.sock
Uptime:            7 min 27 sec
 
Threads: 1  Questions: 5  Slow queries: 0  Opens: 32  Flush tables: 1  Open tables: 25  Queries per second avg: 0.011
--------------
View Code

 

4）升级库mysql_upgrade
技术分享 技术分享 
aiapple@aiapple:/tmp/mysqldata$ /usr/local/mysql56/bin/mysql_upgrade -uroot --socket=/tmp/mysqldata/node1/mysql.sock -p
Enter password:
Looking for‘mysql‘ as: /usr/local/mysql56/bin/mysql
Looking for‘mysqlcheck‘ as: /usr/local/mysql56/bin/mysqlcheck
Running ‘mysqlcheck‘ with connection arguments: ‘--socket=/tmp/mysqldata/node1/mysql.sock‘
Warning: Using a password on the command line interface can be insecure.
Running ‘mysqlcheck‘ with connection arguments: ‘--socket=/tmp/mysqldata/node1/mysql.sock‘
Warning: Using a password on the command line interface can be insecure.
mysql.columns_priv                                 OK
mysql.db                                           OK
mysql.event                                        OK
mysql.func                                         OK
mysql.general_log                                  OK
mysql.help_category                                OK
mysql.help_keyword                                 OK
mysql.help_relation                                OK
mysql.help_topic                                   OK
mysql.host                                         OK
mysql.ndb_binlog_index                             OK
mysql.plugin                                       OK
mysql.proc                                         OK
mysql.procs_priv                                   OK
mysql.proxies_priv                                 OK
mysql.servers                                      OK
mysql.slow_log                                     OK
mysql.tables_priv                                  OK
mysql.time_zone                                    OK
mysql.time_zone_leap_second                        OK
mysql.time_zone_name                               OK
mysql.time_zone_transition                         OK
mysql.time_zone_transition_type                    OK
mysql.user                                         OK
Running ‘mysql_fix_privilege_tables‘...
Warning: Using a password on the command line interface can be insecure.
Running ‘mysqlcheck‘ with connection arguments: ‘--socket=/tmp/mysqldata/node1/mysql.sock‘
Warning: Using a password on the command line interface can be insecure.
Running ‘mysqlcheck‘ with connection arguments: ‘--socket=/tmp/mysqldata/node1/mysql.sock‘
Warning: Using a password on the command line interface can be insecure.
OK
View Code

 

#验证库有没有升级成功
aiapple@aiapple:/tmp/mysqldata$ /usr/local/mysql56/bin/mysql_upgrade -uroot --socket=/tmp/mysqldata/node1/mysql.sock -p
Enter password:
Looking for‘mysql‘ as: /usr/local/mysql56/bin/mysql
Looking for‘mysqlcheck‘ as: /usr/local/mysql56/bin/mysqlcheck
This installation of MySQL is already upgraded to 5.6.32, use --force if you still need to run mysql_upgrade
 
mysql多实例安装
 
  1. 部署好mysql软件
  2. 编辑多个配置文件，初始化多个实例
  3. 启动mysql实例
 
为啥多实例部署？
  • 充分利用系统资源
  • 资源隔离
  • 业务，模块隔离
 多实例安装
#mkdir -p /mysqldata/node3

 

a) 初始化实例 使用脚本mysql_install_db
aiapple@aiapple:/tmp/mysqldata/node1$ /usr/local/mysql56/scripts/mysql_install_db --user=aiapple --basedir=/usr/local/mysql56 --datadir=/tmp/mysqldata/node3
#查看
aiapple@aiapple:/tmp/mysqldata/node1$ ls ../node3
ibdata1  ib_logfile0  ib_logfile1  mysql  performance_schema  test

 

b) 给node3配置文件
技术分享 技术分享 
                        cp
                         my2.cnf my3.cnf
vim my3.cnf(修改相关参数)
[client]
#password       = your_password
port            = 3308
socket          = /tmp/mysqldata/node3/mysql.sock
 
[mysqld_safe]
user=aiapple
ledir = /usr/local/mysql56/bin
#ledir = /usr/local/mysql55/bin
nice = 0
# Here follows entries for some specific programs
 
# The MySQL server
[mysqld]
port            = 3308
socket          = /tmp/mysqldata/node3/mysql.sock
pid-file        = /tmp/mysqldata/node3/mysqld.pid
basedir         = /usr/local/mysql56
#basedir         = /usr/local/mysql55
datadir         = /tmp/mysqldata/node3
innodb_data_home_dir      = /tmp/mysqldata/node3
innodb_log_group_home_dir = /tmp/mysqldata/node3
tmpdir          = /tmp/mysqldata/node3
log-error       = /tmp/mysqldata/node3/aiapple.log
log-bin         = /tmp/mysqldata/node3/mysql-bin.log
View Code

 

c) 使用mysqld_safe,及my3.cnf拉起实例
aiapple@aiapple:/tmp/mysqldata/node3$ /usr/local/mysql56/bin/mysqld_safe --defaults-file=/tmp/mysqldata/node3/my3.cnf &
[2] 9861
aiapple@aiapple:/tmp/mysqldata/node3$ 16080622:03:17 mysqld_safe Logging to ‘/tmp/mysqldata/node3/aiapple.log‘.
16080622:03:17 mysqld_safe Starting mysqld daemon with databases from /tmp/mysqldata/node3

 

d）查看
aiapple@aiapple:/tmp/mysqldata/node3$ ps -ef | grep mysqld
aiapple   91218547021:29 pts/200:00:00 /bin/sh /usr/local/mysql56/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf
aiapple   94899121021:29 pts/200:00:02 /usr/local/mysql56/bin/mysqld --defaults-file=/tmp/mysqldata/my.cnf --basedir=/usr/local/mysql56 --datadir=/tmp/mysqldata/node1 --plugin-dir=/usr/local/mysql56/lib/plugin --log-error=/tmp/mysqldata/node1/aiapple.log --pid-file=/tmp/mysqldata/node1/mysqld.pid --socket=/tmp/mysqldata/node1/mysql.sock --port=3306
aiapple   98618547022:03 pts/200:00:00 /bin/sh /usr/local/mysql56/bin/mysqld_safe --defaults-file=/tmp/mysqldata/node3/my3.cnf
aiapple  103279861022:03 pts/200:00:00 /usr/local/mysql56/bin/mysqld --defaults-file=/tmp/mysqldata/node3/my3.cnf --basedir=/usr/local/mysql56 --datadir=/tmp/mysqldata/node3 --plugin-dir=/usr/local/mysql56/lib/plugin --log-error=/tmp/mysqldata/node3/aiapple.log --pid-file=/tmp/mysqldata/node3/mysqld.pid --socket=/tmp/mysqldata/node3/mysql.sock --port=3308
aiapple  103508547022:04 pts/200:00:00grep --color=auto mysqld
 
可以看到有两个端口的mysqld，分别是3306,3308；

 

e) 登陆新实例，删除test库，空用户，设置root密码
技术分享 技术分享 
aiapple@aiapple:/tmp/mysqldata/node3$ mysql -uroot --socket=/tmp/mysqldata/node3/mysql.sock
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.32-log MySQL Community Server (GPL)
 
Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
 
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
 
Type ‘help;‘ or ‘\h‘for help. Type ‘\c‘ to clear the current input statement.
 
delete from msyql.user where user=‘‘;
delete from mysql.user where host<>‘localhost‘;
set password for root@‘localhost‘=password(‘000000‘);
delete from mysql.db;
drop database test;
flush privileges;
View Code

 

mysql线上安装小结
 
  • 根据需求选择合适的版本以及分支，建议使用或升级到较高版本5.5或5.6
  • 如果需要定制mysql功能的话，可以考虑编译安装，否则的话建议使用二进制包安装，比较省事。
  • 根据机器配置选择部署多个mysql实例还是单个实例，机器配置非常好的话，建议部署多实例

原文：http://www.cnblogs.com/Aiapple/p/5745045.html

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