【问题标题】:Can't set mysql database in SSH无法在 SSH 中设置 mysql 数据库
【发布时间】:2021-11-13 03:37:03
【问题描述】:

我在 a2 主机中使用 VPS Ubuntu 20.04。我正在尝试设置我的 mysql 数据库,但我遇到了一些错误。我正在通过 SSH 执行此操作。我安装了 mysql 使用

sudo apt-get install mysql-server mysql-client

它安装得很好。但是当我尝试运行时

sudo mysql_secure_installation

它抛出了这个错误

Error: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111)

我尝试重新安装mysql-server,但没有成功。我注意到一些错误:

  1. 在我的 /etc/mysql/my.cnf 文件中,似乎缺少一些代码,我只有这个:

它没有任何关于套接字的信息。

  1. 我的 /var/run/mysqld/mysqld.sock 文件在我安装数据库时没有创建。甚至没有创建文件夹 /var/run/mysqld。我试图创建两者,但它仍然不起作用。在我的示例中,文件是以错误的方式创建的,甚至没有被创建。我不知道为什么会这样。

文件:/etc/mysql/mysql.conf.d/mysqld.cnf

#
# The MySQL database server configuration file.
#
# One can use all long options that the program supports.
# Run program with --help to get a list of available options and with
# --print-defaults to see which it would actually understand and use.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html

# Here is entries for some specific programs
# The following values assume you have at least 32M ram

[mysqld]
#
# * Basic Settings
#
user        = mysql
# pid-file  = /var/run/mysqld/mysqld.pid
# socket    = /var/run/mysqld/mysqld.sock
# port      = 3306
# datadir   = /var/lib/mysql


# If MySQL is running as a replication slave, this should be
# changed. Ref https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html#sysvar_tmpdir
# tmpdir        = /tmp
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address        = 127.0.0.1
mysqlx-bind-address = 127.0.0.1
#
# * Fine Tuning
#
key_buffer_size     = 16M
# max_allowed_packet    = 64M
# thread_stack      = 256K

# thread_cache_size       = -1

# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover-options  = BACKUP

# max_connections        = 151

# table_open_cache       = 4000

#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
#
# Log all queries
# Be aware that this log type is a performance killer.
# general_log_file        = /var/log/mysql/query.log
# general_log             = 1
#
# Error log - should be very few entries.
#
log_error = /var/log/mysql/error.log
#
# Here you can see queries with especially long duration
# slow_query_log        = 1
# slow_query_log_file   = /var/log/mysql/mysql-slow.log
# long_query_time = 2
# log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
#       other settings you may need to change.
# server-id     = 1
# log_bin           = /var/log/mysql/mysql-bin.log
# binlog_expire_logs_seconds    = 2592000
max_binlog_size   = 100M
# binlog_do_db      = include_database_name
# binlog_ignore_db  = include_database_name

我有什么遗漏吗?如果有人可以帮助我,我将不胜感激。谢谢!

【问题讨论】:

  • 但在我的情况下,我的 mysql.sock 没有创建并且我的 my.cnf 不完整。这两个文件默认是错误的。
  • 您的my.cnf 文件不完整。它包括两个目录路径以及更多文件,这些文件将包含在mysqlmysqld 的配置中。您将在其中一个文件中找到套接字详细信息。
  • 哦。我从 /etc/mysql/mysql.conf.d 读取文件并找到包含一些信息的文件 mysqld.cnf。它也有通往套接字的路径。我现在该怎么办?该文件的内容不应该在 /etc/mysql/my.cnf 中吗?我编辑了帖子并将文件放在那里。
  • 编辑my.cnf 文件可能无害,但也不是必需的。 MySQL 将自动包含额外的文件。这就是 !includedir 指令的目的。

标签: mysql ubuntu ssh vps


【解决方案1】:

对于遇到相同错误的任何人,我通过重新安装整个操作系统来解决此问题。我的 ubuntu 版本是 20.04,我安装的是 18.04 版本。这为我解决了。

【讨论】:

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