curl: (56) Recv failure: Connection reset by peer

Docker Redirection problem :curl: (56) Recv failure: Connection reset by peer

Solutions

The following considerations , Aiming at docker Deploy springboot project , I am here springboot Configuration file for application.properties Set the port to 8848

1、 Consider whether the port conflicts , For example, the port of the currently running project is 8848, However, there is an old project running before the project runs , And the port of the old project is also 8848

#  View port usage 
netstat -lntp | grep 8848

2、 Consider whether the project port has forgotten to be exposed , The premise is that the project uses dockerfile structure , if dockerCompose Look at the third point

■ The details are as follows ： You can see that the port location is empty

• dockerfile Content ：

Solution 1：dockerfile Add... To the file EXPOSE Port number , And select the port mapping when creating the startup container -p Port number : Container port (expose 8848)

add EXPOSE How the port number is exposed , Only expose to other containers for use , It cannot be exposed to the host for use , namely curl localhost: Port number It's not accessible , You need to do port mapping -p Host port :dockerfile Exposed ports , Then you can access... On the host

3、 Consider whether the project has configuration files for multiple environments [application.yml or application.properties], For example, the existing development environment [application.properties], There are also configuration files for the production environment [application-prod.properties], And your goal is docker The running configuration file is for the production environment , You need to select the configuration file of the generation environment before packaging

Add the command line -U clean package The role of ： Make the packaging more complete , Avoid packaged jar The package could not be downloaded completely from the remote warehouse , appear was cached in the local repository Error of , Add the command line -U clean package

4、 Consider using -p Do port mapping , Whether the port number is filled in normally during the test ：

5、 Test in browser , Consider whether the security group or firewall of the server is released ：

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