Ubuntu系统的MySQL远程访问问题札记

首次在Ubuntu安装MySQL后，由于默认MySQL的绑定地址是127.0.0.1，导致客户端访问数据库服务器时，无法链接，因此需要修改相应的mysqld.cnf配置，下面将配置过程记录下来以便将来资料查找：

 

1、本地安装MySQL服务器

root@danlley-VirtualBox:/home/danlley/dockerfiles/mysqldocker/mysql# apt-get install mysql-server-5.7

 执行结果如下：

Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  linux-headers-4.8.0-36 linux-headers-4.8.0-36-generic linux-image-4.8.0-36-generic linux-image-extra-4.8.0-36-generic
Use 'apt autoremove' to remove them.
The following additional packages will be installed:
  libaio1 libevent-core-2.0-5 libhtml-template-perl mysql-client-5.7 mysql-client-core-5.7 mysql-common mysql-server-core-5.7
Suggested packages:
  libipc-sharedcache-perl mailx tinyca
The following NEW packages will be installed:
  libaio1 libevent-core-2.0-5 libhtml-template-perl mysql-client-5.7 mysql-client-core-5.7 mysql-common mysql-server-5.7 mysql-server-core-5.7
0 upgraded, 8 newly installed, 0 to remove and 42 not upgraded.
Need to get 6,356 B/18.4 MB of archives.
After this operation, 160 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://cn.archive.ubuntu.com/ubuntu xenial/main amd64 libaio1 amd64 0.3.110-2 [6,356 B]
Fetched 6,356 B in 0s (81.4 kB/s)
Preconfiguring packages ...
Selecting previously unselected package mysql-common.
(Reading database ... 283097 files and directories currently installed.)
Preparing to unpack .../mysql-common_5.7.17-0ubuntu0.16.04.2_all.deb ...
Unpacking mysql-common (5.7.17-0ubuntu0.16.04.2) ...
Selecting previously unselected package libaio1:amd64.
Preparing to unpack .../libaio1_0.3.110-2_amd64.deb ...
Unpacking libaio1:amd64 (0.3.110-2) ...
Selecting previously unselected package mysql-client-core-5.7.
Preparing to unpack .../mysql-client-core-5.7_5.7.17-0ubuntu0.16.04.2_amd64.deb ...
Unpacking mysql-client-core-5.7 (5.7.17-0ubuntu0.16.04.2) ...
Selecting previously unselected package mysql-client-5.7.
Preparing to unpack .../mysql-client-5.7_5.7.17-0ubuntu0.16.04.2_amd64.deb ...
Unpacking mysql-client-5.7 (5.7.17-0ubuntu0.16.04.2) ...
Selecting previously unselected package mysql-server-core-5.7.
Preparing to unpack .../mysql-server-core-5.7_5.7.17-0ubuntu0.16.04.2_amd64.deb ...
Unpacking mysql-server-core-5.7 (5.7.17-0ubuntu0.16.04.2) ...
Selecting previously unselected package libevent-core-2.0-5:amd64.
Preparing to unpack .../libevent-core-2.0-5_2.0.21-stable-2ubuntu0.16.04.1_amd64.deb ...
Unpacking libevent-core-2.0-5:amd64 (2.0.21-stable-2ubuntu0.16.04.1) ...
Processing triggers for libc-bin (2.23-0ubuntu7) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up mysql-common (5.7.17-0ubuntu0.16.04.2) ...
update-alternatives: using /etc/mysql/my.cnf.fallback to provide /etc/mysql/my.cnf (my.cnf) in auto mode
Selecting previously unselected package mysql-server-5.7.
(Reading database ... 283266 files and directories currently installed.)
Preparing to unpack .../mysql-server-5.7_5.7.17-0ubuntu0.16.04.2_amd64.deb ...
Unpacking mysql-server-5.7 (5.7.17-0ubuntu0.16.04.2) ...
Selecting previously unselected package libhtml-template-perl.
Preparing to unpack .../libhtml-template-perl_2.95-2_all.deb ...
Unpacking libhtml-template-perl (2.95-2) ...
Processing triggers for systemd (229-4ubuntu16) ...
Processing triggers for ureadahead (0.100.0-19) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up libaio1:amd64 (0.3.110-2) ...
Setting up mysql-client-core-5.7 (5.7.17-0ubuntu0.16.04.2) ...
Setting up mysql-client-5.7 (5.7.17-0ubuntu0.16.04.2) ...
Setting up mysql-server-core-5.7 (5.7.17-0ubuntu0.16.04.2) ...
Setting up libevent-core-2.0-5:amd64 (2.0.21-stable-2ubuntu0.16.04.1) ...
Setting up mysql-server-5.7 (5.7.17-0ubuntu0.16.04.2) ...
update-alternatives: using /etc/mysql/mysql.cnf to provide /etc/mysql/my.cnf (my.cnf) in auto mode
Renaming removed key_buffer and myisam-recover options (if present)
Setting up libhtml-template-perl (2.95-2) ...
Processing triggers for libc-bin (2.23-0ubuntu7) ...
Processing triggers for systemd (229-4ubuntu16) ...
Processing triggers for ureadahead (0.100.0-19) ...
root@danlley-VirtualBox:/home/danlley/dockerfiles/mysqldocker/mysql#

 

 

2、变更mysql配置文件，找到路径“/etc/mysql/mysql.conf.d”，并打开配置文件：vi mysqld.cnf，修改服务器绑定地址配置

root@danlley-VirtualBox:/home/danlley/dockerfiles/mysqldocker/mysql# cd /etc/mysql/mysql.conf.d/
root@danlley-VirtualBox:/etc/mysql/mysql.conf.d# vi mysqld.cnf

 

修改后的内容如下：

#
# The MySQL database server configuration file.
#
# You can copy this to one of:
# - "/etc/mysql/my.cnf" to set global options,
# - "~/.my.cnf" to set user-specific options.
#
# 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

# This will be passed to all mysql clients
# It has been reported that passwords should be enclosed with ticks/quotes
# escpecially if they contain "#" chars...
# Remember to edit /etc/mysql/debian.cnf when changing the socket location.

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

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

[mysqld]
#
# * Basic Settings
#
user            = mysql
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
port            = 3306
basedir         = /usr
datadir         = /var/lib/mysql
tmpdir          = /tmp
lc-messages-dir = /usr/share/mysql
skip-external-locking
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address            = 0.0.0.0
#
# * Fine Tuning
#
key_buffer_size         = 16M
max_allowed_packet      = 16M
thread_stack            = 192K
thread_cache_size       = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover-options  = BACKUP
#max_connections        = 100
#table_cache            = 64
#thread_concurrency     = 10
#
# * Query Cache Configuration
#
query_cache_limit       = 1M
query_cache_size        = 16M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file        = /var/log/mysql/mysql.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
#log_slow_queries       = /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
expire_logs_days        = 10
max_binlog_size   = 100M
#binlog_do_db           = include_database_name
#binlog_ignore_db       = include_database_name
#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!
#
# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
#
# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem

 

3、重启mysql

root@danlley-VirtualBox:/etc/mysql/mysql.conf.d# service mysql stop
root@danlley-VirtualBox:/etc/mysql/mysql.conf.d# service mysql start
root@danlley-VirtualBox:/etc/mysql/mysql.conf.d# service mysql restart 

4、测试远程客户端连接数据库