Preguntes Freqüents - FAQ

Go is a fast, compiled language popular for building high-performance backend services, CLI tools, and infrastructure software (Docker and Kubernetes are both written in Go). This guide covers installing Go from the official binary distribution.

Prerequisites

• Ubuntu 22.04/24.04 or Debian 11/12 VPS
• Root or sudo access

Step 1 — Remove Any Previous Go Installation

sudo rm -rf /usr/local/go

Step 2 — Download the Latest Go Release

Check the current version at Go's official downloads page, then:

wget https://go.dev/dl/go1.23.0.linux-amd64.tar.gz

Adjust the version number and architecture (arm64 for ARM-based VPS instances) as needed.

Step 3 — Extract to /usr/local

sudo tar -C /usr/local -xzf go1.23.0.linux-amd64.tar.gz

Step 4 — Add Go to Your PATH

echo 'export PATH=$PATH:/usr/local/go/bin' >> ~/.bashrc
source ~/.bashrc

Step 5 — Verify Installation

go version

Step 6 — Set Up a Workspace and Test

mkdir -p ~/go-projects/hello
cd ~/go-projects/hello
nano main.go

package main

import "fmt"

func main() {
    fmt.Println("Hello from Go!")
}

Step 7 — Initialize a Module

go mod init hello

Step 8 — Run the Program

go run main.go

Building a Compiled Binary

go build -o hello main.go
./hello

Go compiles to a single self-contained binary with no runtime dependencies required on the deployment server — a major operational advantage.

Managing Dependencies

go get github.com/gin-gonic/gin

Running a Go Application as a systemd Service

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

[Unit]
Description=My Go Application
After=network.target

[Service]
ExecStart=/opt/myapp/myapp
Restart=always
User=deploy
WorkingDirectory=/opt/myapp

[Install]
WantedBy=multi-user.target

sudo systemctl daemon-reload
sudo systemctl enable --now myapp

Common Errors

"go: command not found" — the PATH export wasn't applied; verify with echo $PATH and re-source your shell profile.

Wrong architecture downloaded — confirm your VPS's architecture with uname -m before downloading (x86_64 needs the amd64 build; ARM VPS needs arm64).

Best Practices

• Deploy compiled binaries rather than running go run in production
• Use Go modules (go.mod/go.sum) for reproducible dependency management
• Run production services via systemd for automatic restart and boot persistence

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