Home  >  Article  >  Database  >  mysqladmin 管理命令详细应用

mysqladmin 管理命令详细应用

WBOY
WBOYOriginal
2016-06-07 16:59:501005browse

mysqladmin 工具的使用格式:mysqladmin [option] command [command option] command ......option 选项:-c number 自动运行次

mysqladmin 工具的使用格式:

mysqladmin [option] command [command option] command ......

option 选项:

-c  number 自动运行次数统计,必须和 -i 一起使用

-i   number 间隔多长时间重复执行

每个两秒查看一次服务器的状态,总共重复5次。

./mysqladmin -uroot -p  -i 2 -c 5 status     

     -#, --debug[=name]  Output debug log. Often this is 'd:t:o,filename'.
  -f, --force         Don't ask for confirmation on drop database; with
                      multiple commands, continue even if an error occurs. 禁用错误,drop 数据库时不提示,执行多条命令时出错继续执行
  -C, --compress      Use compression in server/client protocol.
  --character-sets-dir=name  字符集所在目录
                      Directory where character sets are.
  --default-character-set=name 设置默认字符集
                      Set the default character set.
  -?, --help          Display this help and exit. 显示帮助 

  -h, --host=name     Connect to host.  连接的主机名或iP
  -p, --password[=name]  登录密码,如果不写于参数后,则会提示输入
                      Password to use when connecting to server. If password is
                      not given it's asked from the tty.
  -P, --port=#        Port number to use for connection. 指定数据库端口
  --protocol=name     The protocol of connection (tcp,socket,pipe,memory). 指定连接协议
  -r, --relative      Show difference between current and previous values when
                      used with -i. Currently works only with extended-status. 显示前后变化的值,必须结合- i

./mysqladmin -uroot -p -i 2 -r extended-status

假如此处显示的uptime 将永远是2,,因为与之前取的结果比只相差2.

 
  -O, --set-variable=name
                      Change the value of a variable. Please note that this
                      option is deprecated; you can set variables directly with
                      --variable-name=value.修改变量的值,该选项已经不再使用,请使用--variable-name=value 的方式修改变量值
  -s, --silent        Silently exit if one can't connect to server.
  -S, --socket=name   Socket file to use for connection. 指定socket file
  -i, --sleep=#       Execute commands again and again with a sleep between. 间隔一段时间执行一次
  -u, --user=name     User for login if not current user.登录数据库用户名
  -v, --verbose       Write more information. 写更多的信息
  -V, --version       Output version information and exit. 显示版本

  ./mysql -uroot -p -V


  -E, --vertical      Print output vertically. Is similar to --relative, but
                      prints output vertically.
  -w, --wait[=#]      Wait and retry if connection is down. 如果连接断开,等待w 指定的时间后重试
  --connect_timeout=#
  --shutdown_timeout=#

1、查看服务器的状况:status

  ./mysql -uroot -p status

显示结果:

   Uptime: 4883162  Threads: 1  Questions: 86  Slow queries: 0  Opens: 0  Flush tables: 1  Open tables: 18  Queries per second avg: 0.000

2.修改root 密码:

   mysqladmin -u root -poldpassword password 'newpassword'

3.检查mysqlserver是否可用:

  mysqladmin -uroot -p ping

显示结果:

   mysqld is alive

4.查询服务器的版本

  mysqladmin -uroot -p version

linux

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn