Navicat远程连接MySQL数据库

Navicat连接远程MySQL数据库

环境：Ubuntu 18.10 (GNU/Linux 4.18.0-13-generic x86_64)+Navicat 12.0.18(64-bit)-Premium

Welcome to Ubuntu 18.10 (GNU/Linux 4.18.0-13-generic x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage


74 个可升级软件包。
0 个安全更新。

Last login: Fri Jan 25 17:36:39 2019 from 192.168.249.1
root@onefine-virtual-machine:~#

安装mysql

root@onefine-virtual-machine:~# mysql

Command 'mysql' not found, but can be installed with:

apt install mysql-client-core-5.7
apt install mariadb-client-core-10.1

root@onefine-virtual-machine:~# sudo apt-get install mysql-server
...
root@onefine-virtual-machine:~#

查看MySQL是否启动成功：

root@onefine-virtual-machine:~# ps aux|grep mysqld
mysql      4674  0.1  5.7 1128032 175292 ?      Sl   10:00   0:00 /usr/sbin/mysqld --daemonize --pid-file=/run/mysqld/mysqld.pid
root       4845  0.0  0.0  17480   900 pts/0    S+   10:03   0:00 grep --color=auto mysqld
root@onefine-virtual-machine:~#

可以看到mysql已经启动，PID(进程号)是4674

设置root的密码：

root@onefine-virtual-machine:~# mysqladmin -uroot password 123456
mysqladmin: [Warning] Using a password on the command line interface can be insecure.
Warning: Since password will be sent to server in plain text, use ssl connection to ensure password safety.
root@onefine-virtual-machine:~#
# mysql -u root -p  ,登录mysql，连接用户为root
root@onefine-virtual-machine:~# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or g.
Your MySQL connection id is 3
Server version: 5.7.25-0ubuntu0.18.10.2 (Ubuntu)

Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
4 rows in set (0.00 sec)

mysql> exit
Bye
root@onefine-virtual-machine:~#

让MySQL可以被远程访问：

默认情况下MySQL只在本机启动，因为只在本地进行监听；进入/etc/mysql/mysql.conf.d/mysqld.cnf将bind-address = 127.0.0.1改为bind-address = 0.0.0.0

root@onefine-virtual-machine:~# sudo vim /etc/mysql/mysql.conf.d/mysqld.cnf
...
#
# 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
...
:wq
root@onefine-virtual-machine:~# cat /etc/mysql/mysql.conf.d/mysqld.cnf
#
# 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_open_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
#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
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
root@onefine-virtual-machine:~#

重启MySQL服务：

root@onefine-virtual-machine:~# sudo service mysql restart
root@onefine-virtual-machine:~# ps aux|grep mysqld
mysql      5369  1.3  5.7 1128032 175196 ?      Sl   10:26   0:00 /usr/sbin/mysqld --daemonize --pid-file=/run/mysqld/mysqld.pid
root       5407  0.0  0.0  17480   892 pts/0    S+   10:27   0:00 grep --color=auto mysqld
root@onefine-virtual-machine:~#

新的PID:5369

给远程root用户授权

MySQL的权限是非常严谨的，上一部仅仅是对外绑定ip，这还不行——还要给root用户授权，让root用户在非本机访问仍然有权限访问才行，如果不设置的话除localhost的连接被接受之外其他外部的ip连接过去是不被接受的。

• 权限赋值命令：GRANT ALL PRIVILEGES ON *.* To 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;

  • GRANT ALL PRIVILEGES 授予所有权限
  • ON *.* 在所有的表上
  • To 'root'@'%' 通过root用户连接过来的外部所有ip(%)
  • IDENTIFIED BY '123456' 密码

• 刷新权限：flush privileges;

  • 赋值完成必须刷新才能使配置生效

root@onefine-virtual-machine:~# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or g.
Your MySQL connection id is 11
Server version: 5.7.25-0ubuntu0.18.10.2 (Ubuntu)

Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or 'h' for help. Type 'c' to clear the current input statement.

mysql> GRANT ALL PRIVILEGES ON *.* To 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

mysql> exit
Bye
root@onefine-virtual-machine:~#

navicat新建数据库的注意事项：

字符集utf8(或utf8 - UTF-8 Unicode)，排序规则utf8_general_ci。(这里Nvavicat环境：12.0.18(64-bit)-Premium)