How to Deploy Go Web Application on Ubuntu • Linux & Open Source

Go, also known as Golang, is an open-source programming language developed by Google. Go is designed for efficiency, ease of use, and scalability. It is very popular for building web applications, microservices, and cloud-based applications. In this guide, we will discuss how to deploy a simple Go web application on Ubuntu using Nginx as a reverse proxy and Systemd to manage the application service.

Install Go

Update and install Go:

sudo apt update wget sudo tar -C /usr/local -xzf go1.23.3.linux-amd64.tar.gz echo ‘export PATH=$PATH:/usr/local/go/bin’ >> ~/.profile source ~/.profile

sudo apt update

wget https://go.dev/dl/go1.23.3.linux-amd64.tar.gz

sudo tar –C /usr/local –xzf go1.23.3.linux–amd64.tar.gz

echo ‘export PATH=$PATH:/usr/local/go/bin’ >> ~/.profile

source ~/.profile

Verifying Go installation by displaying the version number:

The response to the command:

go version go1.23.3 linux/amd64

go version go1.23.3 linux/amd64

Creating a Go App

Create a directory for the application project with the name goweb:

mkdir ~/goweb && cd ~/goweb

mkdir ~/goweb && cd ~/goweb

Creating the main.go file:

The contents of the file main.go:

package main import ( “fmt” “net/http” ) func handler(w http.ResponseWriter, r *http.Request) { fmt.Fprintf(w, “Hello, World!”) } func main() { http.HandleFunc(“/”, handler) http.ListenAndServe(“:8080”, nil) }

package main

import (

“fmt”

“net/http”

)

func handler(w http.ResponseWriter, r *http.Request) {

fmt.Fprintf(w, “Hello, World!”)

}

func main() {

http.HandleFunc(“/”, handler)

http.ListenAndServe(“:8080”, nil)

}

Compile the application:

Creating a Service

Create a systemd service file:

sudo nano /etc/systemd/system/goweb.service

sudo nano /etc/systemd/system/goweb.service

File contents:

[Unit] Description=Go Web App After=network.target [Service] ExecStart=/home/youruser/goweb/app Restart=always User=youruser Group=youruser Environment=PORT=8080 [Install] WantedBy=multi-user.target

[Unit]

Description=Go Web App

After=network.target

[Service]

ExecStart=/home/youruser/goweb/app

Restart=always

User=youruser

Group=youruser

Environment=PORT=8080

[Install]

WantedBy=multi–user.target

Enable the service:

sudo systemctl daemon-reload sudo systemctl enable goweb sudo systemctl start goweb sudo systemctl status goweb

sudo systemctl daemon–reload

sudo systemctl enable goweb

sudo systemctl start goweb

sudo systemctl status goweb

Nginx Configuration

Install Nginx:

sudo apt install nginx -y

sudo apt install nginx –y

Create the Nginx configuration file:

sudo nano /etc/nginx/conf.d/goweb.conf

sudo nano /etc/nginx/conf.d/goweb.conf

File contents:

server { listen 80; server_name yourdomain.com; location / { proxy_pass proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection ‘upgrade’; proxy_set_header Host $host; proxy_cache_bypass $http_upgrade; } }

server {

listen 80;

server_name yourdomain.com;

location / {

proxy_pass http://localhost:8080;

proxy_http_version 1.1;

proxy_set_header Upgrade $http_upgrade;

proxy_set_header Connection ‘upgrade’;

proxy_set_header Host $host;

proxy_cache_bypass $http_upgrade;

}

Restart Nginx:

sudo systemctl restart nginx

sudo systemctl restart nginx

Test the Application

Open your browser and visit the address:

The result is the text “Hello, World!”.

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