Run Golang Applications Forever With PM2

Software Engineers who work on Golang applications need to keep them running forever on servers and monitor their performance.

These applications are business critical and must adhere to a strict Service-Level Agreements (SLAs), so they must be able to scale across available CPUs without code modifications. Maintaining performance and achieving 99.999% availability throughout the year is important to handle customers demand spikes.

In this tutorial, we will demonstrate the effectiveness of PM2, a production process manager for Node.js applications, and how we can use it to keep Golang applications running forever. PM2 comes with built-in features, such as load balancers, for running high-performance applications.

Install Golang on Amazon EC2

Connect to the ec2 instance and use yum configuration manager to install Go.

sudo yum update -y
sudo yum install -y golang

Add Go to folder

go version
go env
cd /usr/lib/golang/bin
mkdir projects

Add command to ~/.bash_profile

# GOROOT is the location where Go package is installed on your system
export GOROOT=/usr/lib/golang

# GOPATH is the location of your work directory
export GOPATH=$HOME/projects

# PATH in order to access go binary system wide
export PATH=$PATH:$GOROOT/bin

Install PM2

PM2 is a command line tool that requires minimal configuration. If you already have NPM installed on your virtual machine (Amazon EC2), then you can install PM2 by simply running the following command:

npm i pm2

Build Go Application

go mod init main
go mod tidy
go build main.go #build golang application
sudo chmod +x main #give execution permission to the binary

Don’t forget to add the port to Security Groups inbound rules.

Create Package.json File

    "apps": [
            "name": "cryptodatapi",
            "version": "0.0.5",
            "license": "MIT",
            "private": true,
            "author": "Moat Systems Limited",
            "script": "./main"
    "dependencies": {
        "pm2": "^5.2.0"

Once the package.json file has been created, you are ready to start the Golang application.

Start Golang Application 🚀

Start the Golang application you want to keep running forever by running these commands:

pm2 start package.json --name "cryptodatapi" --watch -f -i 0 #start golang application
pm2 save #synchronize with saved process list
pm2 startup #enable PM2 to auto-start at system boot

Monitor Golang Application

pm2 monit

Keymetrics Inc. offers a paid version, which includes additional features.

That’s all for now, friends. We hope you found it useful. Toodles! 😎