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MySQL 二进制安装,升级,多实例部署
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
- 下载软件安装包
- 解压放到指定目录(比如 /usr/local)并将 mysql 目录放到 PATH 中
- 初始化实例,编辑配置文件 并启动
- 账号安全设置
1) 下载
mysql-5.5.50-linux2.6-i686
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:$PATH |
3) 初始化实例 使用脚本 mysql_install_db
mkdir -p /tmp/mysqldata/node1 | |
/usr/local/mysql55/script/mysql_install_db --user=mysql --basedir=/usr/local/mysql55 --datadir=/tmp/mysqldata/node1 | |
cd /tmp/mysqldata/node1 |
出现问题 1 没有 libaio.so.1 库
/tmp/mysql55/bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory
解决:查询 libaio 库并按照 libaio.so.1
查询
linuxidc@linuxidc:/tmp$ 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
linuxidc@linuxidc:/tmp$ sudo apt-get install libaio1
初始化成功:
linuxidc@linuxidc:/usr/local/mysql/data$ ls -l /tmp/mysqldata/node1/ | |
total 12 | |
drwx------ 2 linuxidc linuxidc 4096 7 月 27 21:27 mysql | |
drwx------ 2 linuxidc linuxidc 4096 7 月 27 21:27 performance_schema | |
drwx------ 2 linuxidc linuxidc 4096 7 月 27 21:25 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
解决:创建目录并赋权
linuxidc@linuxidc:/usr/local$ sudo mkdir -p mysql/data | |
linuxidc@linuxidc:/usr/local/mysql$ sudo chown -R linuxidc . | |
linuxidc@linuxidc:/usr/local/mysql$ sudo chgrp -R linuxidc . |
问题 3:不存 /usr/local/mysql/bin/mysqld 文件
linuxidc/usr/local/mysql$ /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf & | :|
[1] 3773 | |
linuxidc/usr/local/mysql$ 160727 21:37:32 mysqld_safe Logging to '/usr/local/mysql/data/linuxidc.err'. | :|
160727 21:37:32 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 |
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
linuxidc@linuxidc:/usr/local/mysql$ cp -ar ../mysql55/* .
问题 4:mysqld 从 /usr/local/mysql/data 中启动库文件;
查看 linuxidc.err: 需要的一些表不在 /usr/local/mysql/data
160727 21:41:59 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data | |
160727 21:41:59 [Note] /usr/local/mysql/bin/mysqld (mysqld 5.5.50-log) starting as process 4500 ... | |
160727 21:41:59 [Note] Plugin 'FEDERATED' is disabled. | |
/usr/local/mysql/bin/mysqld: Table 'mysql.plugin' doesn't exist | |
160727 21:41:59 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it. | |
160727 21:41:59 InnoDB: The InnoDB memory heap is disabled | |
160727 21:41:59 InnoDB: Mutexes and rw_locks use GCC atomic builtins | |
160727 21:41:59 InnoDB: Compressed tables use zlib 1.2.3 | |
160727 21:41:59 InnoDB: Using Linux native AIO | |
160727 21:41:59 InnoDB: Initializing buffer pool, size = 128.0M | |
160727 21:41:59 InnoDB: Completed initialization of buffer pool | |
160727 21:41:59 InnoDB: highest supported file format is Barracuda. | |
InnoDB: Log scan progressed past the checkpoint lsn 48941 | |
160727 21:41:59 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 1595675 | |
160727 21:41:59 InnoDB: Starting an apply batch of log records to the database... | |
InnoDB: Progress in percents: 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 | |
InnoDB: Apply batch completed | |
160727 21:41:59 InnoDB: Waiting for the background threads to start | |
160727 21:42:00 InnoDB: 5.5.50 started; log sequence number 1595675 | |
160727 21:42:00 [Note] Recovering after a crash using mysql-bin | |
160727 21:42:00 [Note] Starting crash recovery... | |
160727 21:42:00 [Note] Crash recovery finished. | |
160727 21:42:00 [Note] Server hostname (bind-address): '0.0.0.0'; port: 3306 | |
160727 21:42:00 [Note] - '0.0.0.0' resolves to '0.0.0.0'; | |
160727 21:42:00 [Note] Server socket created on IP: '0.0.0.0'. | |
160727 21:42:00 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn't exist | |
160727 21:42:00 mysqld_safe mysqld from pid file /usr/local/mysql/data/linuxidc.pid ended |
解决:将原初始化的 datadir 目录中所有拷贝过去
linuxidc@linuxidc:/usr/local/mysql/data$ rm -rf test/ | |
linuxidc@linuxidc:/usr/local/mysql/data$ cp -ar /tmp/mysqldata/node1/* . |
成功安装:

linuxidc/usr/local/mysql/data$ ps -ef | grep mysqld | :|
linuxidc 4536 2146 0 21:43 pts/0 00:00:00 /bin/sh /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf | |
linuxidc 4773 4536 1 21:43 pts/0 00:00:00 /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/linuxidc.err --pid-file=/usr/local/mysql/data/linuxidc.pid --socket=/tmp/mysql.sock --port=3306 | |
linuxidc 4792 2097 0 21:44 pts/2 00:00:00 grep --color=auto mysqld |
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
[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 |
没有相关目录的配置;
增加启动配置参考:mysqld_safe — MySQL Server Startup Script
在 my.cnf 增加一下配置

my.cnf | |
port = 3306 | |
socket = /tmp/mysqldata/node1/mysql.sock | |
[mysqld_safe] | |
user=linuxidc | |
# 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/linuxidc.log | |
log-bin = /tmp/mysqldata/node1/mysql-bin.log |
重新启动
问题一:配置文件权限太大
linuxidc/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
linuxidc@linuxidc:sudo chmod 600 /tmp/mysqldata/my.cnf
问题二:bin 目录未指定
linuxidc/usr/local/mysql$ /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf & | :|
160806 16:07:29 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:linuxidc.err 报错,插件被禁止

160806 16:48:46 [Note] Plugin 'FEDERATED' is disabled. | |
160806 16:48:46 InnoDB: The InnoDB memory heap is disabled | |
160806 16:48:46 InnoDB: Mutexes and rw_locks use GCC atomic builtins | |
160806 16:48:46 InnoDB: Compressed tables use zlib 1.2.3 | |
160806 16:48:46 InnoDB: Using Linux native AIO | |
160806 16:48:46 InnoDB: Initializing buffer pool, size = 128.0M |
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(id int); | |
mysql> show tables; | |
+----------------+ | |
| Tables_in_test | | |
+----------------+ | |
| t1 | | |
+----------------+ | |
1 row in set (0.01 sec) |
删除 test 库
drop database test; | |
Query OK, 1 row affected (0.01 sec) |
mysql 升级
从 5.5 升级到 5.6
- 下载 mysql5.6 安装包并配置 mysql5.6 安装包安装路径
- 关闭 mysql5.5 的实例,修改部分参数,使用 mysql5.6 软件启动
- 执行 mysql5.6 路径下 mysql_upgrade 脚本
- 验证是否成功升级
MySQL 升级
1) 关闭 mysql
查看 mysql 是否启动
linuxidc/tmp/mysqldata$ ps -ef | grep mysqld | :|
linuxidc 4931 2146 0 22:32 pts/0 00:00:00 /bin/sh /usr/local/mysql55/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf | |
linuxidc 5168 4931 0 22:32 pts/0 00:00:00 /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/linuxidc.err --pid-file=/usr/local/mysql/data/linuxidc.pid --socket=/tmp/mysql.sock --port=3306 | |
linuxidc 5187 4889 0 22:33 pts/13 00:00:00 grep --color=auto mysqld |
使用 mysqladmin 工具关闭 mysql 服务
linuxidc/usr/local/mysql$ mysqladmin -uroot --socket=/tmp/mysql.sock shutdown -p | :|
Enter password: | |
160727 22:28:46 mysqld_safe mysqld from pid file /usr/local/mysql/data/linuxidc.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
linuxidc@linuxidc:/usr/local/mysql$ ps -ef | grep mysqld | |
linuxidc 4918 2146 0 22:28 pts/0 00:00:00 grep --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
linuxidc/tmp/mysqldata$ /usr/local/mysql56/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf & | :|
[1] 9121 | |
linuxidc/tmp/mysqldata$ 160806 21:29:11 mysqld_safe Logging to '/tmp/mysqldata/node1/linuxidc.log'. | :|
160806 21:29:11 mysqld_safe Starting mysqld daemon with databases from /tmp/mysqldata/node1 |
# 查看 mysqld 进程有没有起来
linuxidc/tmp/mysqldata$ ps -ef | grep mysql | :|
linuxidc 9121 8547 0 21:29 pts/2 00:00:00 /bin/sh /usr/local/mysql56/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf | |
linuxidc 9489 9121 0 21:29 pts/2 00:00:00 /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/linuxidc.log --pid-file=/tmp/mysqldata/node1/mysqld.pid --socket=/tmp/mysqldata/node1/mysql.sock --port=3306 | |
linuxidc 9564 8547 0 21:35 pts/2 00:00:00 grep --color=auto mysql |
# 登陆后查看 mysql 状态

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 | |
-------------- |
4)升级库 mysql_upgrade

linuxidc@linuxidc:/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
linuxidc/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
- 部署好 mysql 软件
- 编辑多个配置文件,初始化多个实例
- 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
linuxidc@linuxidc:/tmp/mysqldata/node1$ /usr/local/mysql56/scripts/mysql_install_db --user=linuxidc --basedir=/usr/local/mysql56 --datadir=/tmp/mysqldata/node3 | |
#查看 | |
linuxidc@linuxidc:/tmp/mysqldata/node1$ ls ../node3 | |
ibdata1 ib_logfile0 ib_logfile1 mysql performance_schema test |
b) 给 node3 配置文件
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=linuxidc | |
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/linuxidc.log | |
log-bin = /tmp/mysqldata/node3/mysql-bin.log |
c) 使用 mysqld_safe, 及 my3.cnf 拉起实例
linuxidc@linuxidc:/tmp/mysqldata/node3$ /usr/local/mysql56/bin/mysqld_safe --defaults-file=/tmp/mysqldata/node3/my3.cnf & | |
[2] 9861 | |
linuxidc@linuxidc:/tmp/mysqldata/node3$ 160806 22:03:17 mysqld_safe Logging to '/tmp/mysqldata/node3/linuxidc.log'. | |
160806 22:03:17 mysqld_safe Starting mysqld daemon with databases from /tmp/mysqldata/node3 |
d)查看
linuxidc/tmp/mysqldata/node3$ ps -ef | grep mysqld | :|
linuxidc 9121 8547 0 21:29 pts/2 00:00:00 /bin/sh /usr/local/mysql56/bin/mysqld_safe --defaults-file=/tmp/mysqldata/my.cnf | |
linuxidc 9489 9121 0 21:29 pts/2 00:00:02 /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/linuxidc.log --pid-file=/tmp/mysqldata/node1/mysqld.pid --socket=/tmp/mysqldata/node1/mysql.sock --port=3306 | |
linuxidc 9861 8547 0 22:03 pts/2 00:00:00 /bin/sh /usr/local/mysql56/bin/mysqld_safe --defaults-file=/tmp/mysqldata/node3/my3.cnf | |
linuxidc 10327 9861 0 22:03 pts/2 00:00:00 /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/linuxidc.log --pid-file=/tmp/mysqldata/node3/mysqld.pid --socket=/tmp/mysqldata/node3/mysql.sock --port=3308 | |
linuxidc 10350 8547 0 22:04 pts/2 00:00:00 grep --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
linuxidc@linuxidc:/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; |
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
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