Local tool [Navicat] connects to remote [MySQL] operation

Remote connection mysql

【 Summary of premises 】

I am here Install the pagoda panel on the server , Then install it on the panel mysql, And then use the local navcat The remote connection has been disconnected , as follows :

【 reason 】

Port is not open ,

Open the port ：

• The way 1： direct 【 Pagoda panel 】-》【 Security 】 Add direction inside MySQL Of 3306 port

  

• The way 2： Command line operation release port

  • Release port ：firewall-cmd --zone=public --add-port=3306/tcp --pernament

  • Check the port of release ：firewall-cmd --list-ports

    

【 test 】

Again Navicat Connect remote MySQL, Successfully connected ,OK!!

【 Be careful 】

You may also encounter the following prompts when connecting !

The reason for the above error is that your database connection password is wrong

The connection password is not above root password , Is the password of the following database , If the input is correct, you can connect