golang direct deployment

In recent years, with the rapid development of the Internet, various new technologies have emerged one after another. As an emerging programming language, golang (also known as Go language) is popular for its efficiency, simplicity, security and other features. More and more companies are beginning to use golang to develop their own applications. However, during the deployment process of golang applications, some problems are often encountered, which hinder the normal operation of the application. This article will introduce the direct deployment method of golang to help developers deploy applications more conveniently.

1. Packaging of golang applications
Before deploying golang applications, we first need to package the application into an executable file. Golang provides powerful command line tools to complete this process. We only need to enter the following command on the command line:

go build

This command will compile our golang source code into an executable file and save it in the current directory Down. If we need to package the application into an executable file for the specified platform, just add the corresponding parameters after the command, for example:

GOOS=linux GOARCH=amd64 go build

This command will compile our application into a 64-bit executable file under the Linux platform.

2. Deployment of golang applications
There are many ways to deploy golang applications. Here we introduce a simple and easy-to-use method.

1. Install the golang environment
First, we need to install the golang environment on the server. You can download the corresponding installation package from the golang official website (https://golang.org/dl/). After the installation is complete, we need to set the GOPATH environment variable. This environment variable specifies our golang working directory. Execute the following command:

export GOPATH=/path/to/your/workdir

2. Upload the application
Upload the packaged application to the server superior. You can use ftp, scp and other tools to upload. Upload the application to the src directory corresponding to GOPATH.

3. Run the application
Running the application is very simple, just run the following command in the command line:

./your-application-name

If we need to run the application in the background, we can use the following command:

nohup ./your-application-name > /dev/null &

This command will cause the application to run in the background and redirect the output to the /dev/null file.

3. Golang application configuration
Before deployment, we still need to perform some configurations. These configurations include the application's port number, log output, etc.

1. Port number configuration
It is very simple to set the listening port number in the golang application. Just set the corresponding environment variables. For example:

export PORT=8080

This command will cause the application to listen on port 8080.

2. Log output configuration
golang’s standard library provides a simple and easy-to-use log output tool. We can use the following command in the application for log output:

log.Println("hello world")

This command will output "hello world" to on standard output. If we need to output the log to a file, we can use the following command:

log.SetOutput(logFile)```

这个命令将会将日志输出到名为“your-log-file-name”的文件中。

四、总结

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