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这篇文章主要介绍了 MySQL 中 pt-show-grants 怎么用，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让丸趣 TV 小编带着大家一起了解一下。
我们先来看一下此工具的帮助:
[root@idb4 tmp]# pt-show-grants –help
pt-show-grants shows grants (user privileges) from a MySQL server. For more
details, please use the –help option, or try perldoc
/usr/local/bin/pt-show-grants for complete documentation.
Usage: pt-show-grants [OPTIONS] [DSN]
Options:
–ask-pass Prompt for a password when connecting to MySQL
–charset=s -A Default character set
–config=A Read this comma-separated list of config files; if
specified, this must be the first option on the command
line
–database=s -D The database to use for the connection
–defaults-file=s -F Only read mysql options from the given file
–drop Add DROP USER before each user in the output
–flush Add FLUSH PRIVILEGES after output
–[no]header Print dump header (default yes)
–help Show help and exit
–host=s -h Connect to host
–ignore=a Ignore this comma-separated list of users
–only=a Only show grants for this comma-separated list of users
–password=s -p Password to use when connecting
–pid=s Create the given PID file
–port=i -P Port number to use for connection
–revoke Add REVOKE statements for each GRANT statement
–separate List each GRANT or REVOKE separately
–set-vars=A Set the MySQL variables in this comma-separated list of
variable=value pairs
–socket=s -S Socket file to use for connection
–[no]timestamp Add timestamp to the dump header (default yes)
–user=s -u User for login if not current user
–version Show version and exit
Option types: s=string, i=integer, f=float, h/H/a/A=comma-separated list, d=DSN, z=size, m=time
Rules:
This tool accepts additional command-line arguments. Refer to the SYNOPSIS and usage information for details.
DSN syntax is key=value[,key=value…] Allowable DSN keys:
KEY COPY MEANING
=== ==== =============================================
A yes Default character set
D yes Default database
F yes Only read default options from the given file
P yes Port number to use for connection
S yes Socket file to use for connection
h yes Connect to host
p yes Password to use when connecting
u yes User for login if not current user
If the DSN is a bareword, the word is treated as the h key.
Options and values after processing arguments:
–ask-pass FALSE
–charset (No value)
–config /etc/percona-toolkit/percona-toolkit.conf,/etc/percona-toolkit/pt-show-grants.conf,/root/.percona-toolkit.conf,/root/.pt-show-grants.conf
–database (No value)
–defaults-file (No value)
–drop FALSE
–flush FALSE
–header TRUE
–help TRUE
–host (No value)
–ignore (No value)
–only (No value)
–password (No value)
–pid (No value)
–port (No value)
–revoke FALSE
–separate FALSE
–set-vars
–socket (No value)
–timestamp TRUE
–user (No value)
–version FALSE
部分参数选项介绍：
–ask-pass Prompt for a password when connecting to MySQL 连接 MySQL 作为密码的提示
–charset=s -A Default character set 连接使用的字符集
–database=s -D The database to use for the connection 连接数据库使用到的 DB
–flush Add FLUSH PRIVILEGES after output 在输出后刷新权限
–[no]header Print dump header (default yes) 打印 dump 头信息
–help Show help and exit 显示帮助
–host=s -h Connect to host 连接主机信息
用法举例:
[root@idb4 tmp]# pt-show-grants -u mdba -p 123456 -S /tmp/mysql.sock
— Grants dumped by pt-show-grants
— Dumped from server Localhost via UNIX socket, MySQL 5.6.27-log at 2017-03-24 11:28:44
— Grants for @ idb4
GRANT USAGE ON *.* TO @ idb4
— Grants for @ localhost
GRANT USAGE ON *.* TO @ localhost
— Grants for chaxun @ %
GRANT SELECT ON *.* TO chaxun @ % IDENTIFIED BY PASSWORD *F58642CAC603E6D0F3667EB641534763E2FB19F9
GRANT INSERT, SELECT, UPDATE ON `accesslog`.`accesslog` TO chaxun @ %
— Grants for dsj @ %
GRANT SELECT ON *.* TO dsj @ % IDENTIFIED BY PASSWORD *004203D413B4B6A751113FEB906AC120AA382064
GRANT INSERT, UPDATE ON `ixinnuo_sjcj`.`data_interface_gs_etr_info` TO dsj @ %
— Grants for ixinnuo_zx @ %
GRANT CREATE, CREATE ROUTINE, CREATE TABLESPACE, INSERT, SELECT, UPDATE ON *.* TO ixinnuo_zx @ % IDENTIFIED BY PASSWORD *AF709110542C4C827FFFB9E77321B0D89259A662
— Grants for liqianying @ %
GRANT ALTER, CREATE, INSERT, SELECT, UPDATE ON *.* TO liqianying @ % IDENTIFIED BY PASSWORD *81822E6C8292D1A0D1CE24A3F55E5491EE592CB8
GRANT ALL PRIVILEGES ON `ixinnuo\_sjcj-\_T`.* TO liqianying @ % WITH GRANT OPTION;
GRANT CREATE, DELETE, INSERT, SELECT, UPDATE ON `ixinnuo\_sjcj`.* TO liqianying @ %
GRANT INSERT, SELECT, UPDATE ON `accesslog`.`accesslog` TO liqianying @ %
— Grants for mdba @ %
GRANT ALL PRIVILEGES ON *.* TO mdba @ % IDENTIFIED BY PASSWORD *E5B360F1D4E45FEFDB70DFE5E2ABD47990A424D6 WITH GRANT OPTION;
— Grants for mdba @ localhost
GRANT ALL PRIVILEGES ON *.* TO mdba @ localhost IDENTIFIED BY PASSWORD *E97EDDC98587C3F06D9BA8D6BA8D6A17AFD471C4
— Grants for monitor @ 172.16.16.27
GRANT PROCESS, SELECT, SUPER ON *.* TO monitor @ 172.16.16.27 IDENTIFIED BY PASSWORD *1975D095AC033CAF4E1BF94F7202A9BBFEEB66F1
— Grants for root @ %
GRANT ALL PRIVILEGES ON *.* TO root @ % IDENTIFIED BY PASSWORD *432CBD2158D692A593E5C4C12188A6AF80589D91 WITH GRANT OPTION;
GRANT INSERT, UPDATE ON `accesslog`.* TO root @ %
— Grants for root @ 127.0.0.1
GRANT ALL PRIVILEGES ON *.* TO root @ 127.0.0.1 IDENTIFIED BY PASSWORD *432CBD2158D692A593E5C4C12188A6AF80589D91 WITH GRANT OPTION;
— Grants for root @ ::1
GRANT ALL PRIVILEGES ON *.* TO root @ ::1 IDENTIFIED BY PASSWORD *432CBD2158D692A593E5C4C12188A6AF80589D91 WITH GRANT OPTION;
— Grants for root @ idb4
GRANT ALL PRIVILEGES ON *.* TO root @ idb4 IDENTIFIED BY PASSWORD *432CBD2158D692A593E5C4C12188A6AF80589D91 WITH GRANT OPTION;
GRANT PROXY ON @ TO root @ idb4 WITH GRANT OPTION;
— Grants for spxqn @ %
GRANT USAGE ON *.* TO spxqn @ % IDENTIFIED BY PASSWORD *C2F4C85D0B14C67F3A3B020502A15BE797F00317
GRANT ALTER, ALTER ROUTINE, CREATE, CREATE ROUTINE, CREATE TEMPORARY TABLES, CREATE VIEW, EVENT, EXECUTE, INDEX, INSERT, LOCK TABLES, REFERENCES, SELECT, SHOW VIEW, TRIGGER, UPDATE ON `ixinnuo\_sjcj-\_T`.* TO spxqn @ % WITH GRANT OPTION;
— Grants for user1 @ %
GRANT USAGE ON *.* TO user1 @ % IDENTIFIED BY PASSWORD *DC58115FACCE299160B5C525C7EE22BE70028A8E
GRANT ALL PRIVILEGES ON `std_data`.* TO user1 @ %
[root@idb4 tmp]#
从全日志中可以看到：
1、先查找所有用户和 Host
2、然后逐个执行 show grants
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