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golangdeploylinux

May 27, 2023 pm 12:19 PM

With the development of the Internet, Go language (Golang) is loved by developers because of its efficiency, simplicity, and concurrency features. More and more companies and teams are beginning to use Go language to develop projects. In order to make projects run and deploy more smoothly, it is very necessary to master the method of deploying Linux in golang.

This article will introduce how to use Go language to write web applications and deploy them on a Linux server.

1. Writing Go language web applications

  1. Installing Go language

Before you start writing Go language web applications, you need to install Go first Locales. Just download the installation package from the official website and install it. The specific steps will not be repeated here.

  1. Writing a Web Application

First, we need to create a Web application in the Go language. Enter the following command in the terminal:

$ mkdir go-web-app
$ cd go-web-app
$ touch main.go
$ go mod init go-web-app
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Next, write the code in the main.go file as follows:

package main

import (
    "fmt"
    "net/http"
)

func main() {
    http.HandleFunc("/", handler)
    http.ListenAndServe(":8080", nil)
}

func handler(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "Hello World!")
}
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In this code, we created a simple web application , which will output "Hello World!" to the browser.

Next, we need to compile the program and generate an executable file. Enter the following command in the terminal:

$ go build
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At this time, an executable file named go-web-app will be generated. We can enter the following command in the terminal to run the program:

$ ./go-web-app
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Enter http://localhost:8080 in the browser, and you will see the "Hello World!" output. So far, we have successfully written a simple Go language web application.

2. Deploy Go language Web application

  1. Prepare Linux server

Before deploying Go language Web application, we need to prepare a Available Linux servers. Here we take the Alibaba Cloud ECS server as an example.

  1. Upload the program to the server

We need to upload the compiled executable file to the Linux server. The executable file can be uploaded to the server through the scp command, as shown below:

$ scp go-web-app user@your_server_ip:/home/user/
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Here user is your username on the Linux server, and your_server_ip is the IP address of the server.

  1. Remote connection to the server

After uploading the program, we need to connect to the server remotely through the terminal. You can connect using the ssh command, as shown below:

$ ssh user@your_server_ip
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After the connection is successful, we come to the command line interface of the Linux server.

  1. Set port

On the Linux server, we need to expose the port number where the program runs so that users can access it through the browser. You can use the iptables command to open the port number, as shown below:

$ sudo iptables -I INPUT -p tcp --dport 8080 -j ACCEPT
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Note that the port number here must be the same as the port number in the program.

  1. Run the program

Finally, we need to run the program on the server. You can use the nohup command to run the program in the background and output the log to the specified file, as shown below:

$ nohup ./go-web-app > log.out 2>&1 &
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Here log.out is the file name of the output log.

Now, we can access the server's IP address and the port number where the program is running through the browser, and we can see the "Hello World!" output.

So far, we have successfully deployed the Go language web application to the Linux server.

Summary

This article introduces how to use Go language to write web applications and deploy them on a Linux server. First, we created a simple web application and compiled it into an executable file; then, we uploaded the executable file to the Linux server and connected to the server remotely through the terminal; then, we opened the port number and connected it to the server Run the program on. Through the introduction of this article, I believe that everyone can already master the method of deploying Linux with golang, and can successfully deploy Go language web applications to Linux servers.

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