Navicate connects Alibaba cloud (explanation of two methods and principles)

One 、 Direct connection （ adopt 3306 port ）

1. summary

Turn on the server's 3306 port , add to MySQL Remote access users , It can realize direct connection to remote MySQL The function of , The effect is to directly localhost Change to server public network IP You can access .

2. Environmental preparation

Local ：Navicat

The server ： Alibaba cloud ECS、 Install well JDK、MySQL

3. Operation and explanation

（1） Open server security group 3306 port

Open the ECS 3306 Ports have certain security risks , The default security group does not allow external access 3306 Port of .

Log in to alicloud –》 Console –》 Find your own cloud server ECS–》 Click the instance after entering ID

Click this instance security group –》 Select configuration rules –》 Add a piece of configuration information

（2） add to MySQL Remote access users

After installation MySQL There is a... In the database mysql library , There's one in the library user surface , This table stores mysql User information for , By default, it's like this [ Outside the chain

Only allow local passage root The account login （ Don't pay attention to the other two ）, We now add a user with remote access, namely Host by % Users of .

adopt shell Tools connect to server , Sign in mysql Run the following command

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;flush privileges; 

Add one that can punch any IP Login account , Account No root, The password for 123456. The second sentence is refresh permission , It doesn't matter if you don't refresh .

（3） Via local Navicat Connect remote MySQL database

Above, we have configured the security group access control , Configured with MySQL Remote login user , Then we can access directly and remotely MySQL 了 .

Connection name ： at will

host ： The server IP Address

port ：3306

user name ：root

password ：123456

Compared with the local database, only one has been changed IP The address can be connected . Projects can also be directly linked to information localhost Change to IP The address directly accesses the cloud database .

Two 、 Use SSH passageway

1. summary

to open up 3306 The port has certain security risks , The project and database are stored on a server , No need to go through the public network IP visit , When developing, you need to connect to the database locally , have access to SSH Connect to the database by channel connection , Connect to the server locally through the server account password , Then connect MySQL, about MySQL This is a local access connection .

2. Environmental preparation

Local ：Navicat

The server ： Alibaba cloud ECS、 Install well JDK、MySQL

3. Operation and explanation

This method does not need to develop security group ports , It's not necessary for MySQL Add remote access user . Use SSH The channel uses the server login account to connect MySQL.

（1） To configure SSH Connect

Selected when connecting SSH Options , Select use SSH passageway

host ： Server public network IP

port ：22（SSH Connection port , Alibaba cloud security group is released by default ）

user name ： Login the user name of the server system （ Notice that it's not MySQL Of ）

password ： The password to log in to the server system （ Notice that it's not MySQL Of ）

The above behavior is equivalent to shell Connected to the server

（2） Configure the database connection information

Normal operation ,

Host name ： at will .

host ：localhost

port ：3306

user name ：mysql user name

password ：mysql password

Because already SSH Connected to the server , This is equivalent to local connection MySQL.

Navicat The picture given is very vivid ,Navicat Connect to server , Then connect the database directly inside

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