Cnf file-Find 选项，不带前面的组

我试图远程连接到我的数据库在 Ubuntu，但我收到错误消息时，尝试 mysql -u root -p:

在配置文件/etc/mysql/my.cnf 第1行找到前面没有组的选项

My.cnf 看起来像:

[mysqld]
user        = mysql
socket      = /var/run/mysqld/mysqld.sock
port        = 3306
basedir     = /usr
datadir     = /var/lib/mysql
tmpdir      = /tmp
bind-address        =  0.0.0.0
key_buffer      = 16M
max_allowed_packet  = 16M
thread_stack        = 192K
thread_cache_size       = 8
myisam-recover         = BACKUP
query_cache_limit   = 1M
query_cache_size        = 16M
log_error                = /var/log/mysql/error.log
expire_logs_days    = 10
max_binlog_size         = 100M


[client]
port        = 3306
socket      = /var/run/mysqld/mysqld.sock


[mysqld_safe]
socket      = /var/run/mysqld/mysqld.sock
nice        = 0


[mysqldump]
quick
quote-names
max_allowed_packet  = 16M


[mysql]


[isamchk]
key_buffer      = 16M
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最佳答案

Charset encoding

Check the charset encoding of the file. Make sure that it is in ASCII.

Use the od command to see if there is a UTF-8 BOM at the beginning, for example.

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it is because of letters or digit infront of [mysqld] just check the leeters or digit anything is not required before [mysqld]

it may be something like

0[mysqld] then this error will occur

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Missing config header

Just add [mysqld] as first line in the /etc/mysql/my.cnf file.

Example

[mysqld]
default-time-zone = "+08:00"

Afterwards, remember to restart your MySQL Service.

sudo mysqld stop
sudo mysqld start
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I had this problem when I installed MySQL 8.0.15 with the community installer. The my.ini file that came with the installer did not work correctly after it had been edited. I did a full manual install by downloading that zip folder. I was able to create my own my.ini file containing only the parameters that I was concerned about and it worked.

  1. download zip file from MySQL website
  2. unpack the folder into C:\program files\MySQL\MySQL8.0
  3. within the MySQL8.0 folder that you unpacked the zip folder into, create a text file and save it as my.ini

  4. include the parameters in that my.ini file that you are concerned about. so something like this(just ensure that there is already a folder created for the datadir or else initialization won't work): 

    [mysqld]
basedire=C:\program files\MySQL\MySQL8.0
datadir=D:\MySQL\Data
....continue with whatever parameters you want to include

  5. initialize the data directory by running these two commands in the command prompt:

    cd C:\program files\MySQL\MySQL8.0\bin
mysqld --default-file=C:\program files\MySQL\MySQL8.0\my.ini --initialize

  6. install the MySQL server as a service by running these two commands:

    cd C:\program files\MySQL\MySQL8.0\bin
mysqld --install --default-file=C:\program files\MySQL\MySQL8.0\my.ini

  7. finally, start the server for the first time by running these two commands:

    cd C:\program files\MySQL\MySQL8.0\bin
mysqld --console
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What worked for me:

  • Open my.ini with Notepad++
  • Encoding --> convert to ANSI
  • save

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