How to Install Strider CD on Ubuntu 18.04

• Introduction
• Requirements
• Step 1: Install Node.js and NPM
• Step 2: Install Git and node-gyp
• Step 3: Install MongoDB
• Step 4: Set up MongoDB Authentication
• Step 5: Install Strider
• Step 6: Manage Node.js Process with PM2

Introduction

Strider CD is an open source continuous deployment platform. The application is written in Node.js and uses MongoDB as a storage backend. Strider is backed by many plugins which add various features to the application.

Requirements

• Fresh Vultr Ubuntu 18.04 instance with at least 1 GB RAM.
• Non-root user with sudo privileges.

Ensure that your system is up to date.

sudo apt-get update && sudo apt-get upgrade -y

Step 1: Install Node.js and NPM

Nodesource provides pre-built binaries for Node.js, which can be installed directly using the OS package manager. Configure the Nodesource repository.

curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -

Install Node.js.

sudo apt-get install -y nodejs

Node.js also installs NPM along with it. Ensure that Node.js and NPM have installed successfully.

strider@vultr:~$ node -v
v10.15.3
strider@vultr:~$ npm -v
6.4.1

Step 2: Install Git and node-gyp

Git comes pre-installed in most Vultr instances. However, you can make sure it's installed and updated.

sudo apt-get install -y git

Install node-gyp, which is a Node.js native add-on build tool.

sudo npm install -g node-gyp

Step 3: Install MongoDB

Import MongoDB public GPG key to ensure unaltered packages are being installed.

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 9DA31620334BD75D9DCB49F368818C72E52529D4

Add MongoDB repository file.

echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.0.list

Update the system repository cache and install the latest MongoDB.

sudo apt-get update
sudo apt-get install -y mongodb-org

Start MongoDB and enable it to automatically start at boot time.

sudo systemctl start mongod
sudo systemctl enable mongod

Step 4: Set up MongoDB Authentication

Open the MongoDB shell by running the mongo command. You will see the following output.

strider@vultr:~/strider$ mongo
MongoDB shell version v4.0.8
connecting to: mongodb://127.0.0.1:27017/?gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("a06b2797-6f58-43e1-8a41-c6401edb5083") }
MongoDB server version: 4.0.8
Welcome to the MongoDB shell.
...

Switch to the admin database.

use admin

Create an admin user. Make sure to replace username admin and password StrongPassword with your preferred choice.

db.createUser(
  {
    user: "admin",
    pwd: "StrongPassword",
    roles: [ { role: "userAdminAnyDatabase", db: "admin" }, "readWriteAnyDatabase" ]
  }
)

Quit the Mongo shell by pressing CTRL+C.

Open the configuration file.

sudo nano /etc/mongod.conf

Find the line with the commented word #security: and replace it with the following text.

security:
  authorization: "enabled"

Save the file and exit the editor. Restart the MongoDB server.

sudo systemctl restart mongod

Step 5: Install Strider

Clone the Strider repository from Github.

cd ~
git clone https://github.com/Strider-CD/strider.git

Install Node.js dependencies.

cd ~/strider
npm install

Login to the Mongo shell once again to create a database for Strider.

mongo

Authenticate your Mongo session with the credentials you created earlier.

use admin
db.auth("admin", "StrongPassword" )

Create a new database user for Strider and assign it to database name strider. Make sure to change the password striderpw in the command below.

use strider
db.createUser({user: "strider", pwd: "striderpw", roles: [{role: "dbOwner", db: "strider"}]})

Quit the Mongo shell by pressing CTRL+C.

Create an administrator user for Strider by running the following command.

DB_URI="mongodb://strider:striderpw@localhost:27017/strider" node bin/strider addUser

Provide the requisite information asked by the script. You will be asked for your email address and a new password.

strider@vultr:~/strider$ DB_URI="mongodb://strider:striderpw@localhost:27017/strider" node bin/strider addUser
Connecting to MongoDB URL: mongodb://strider:striderpw@localhost:27017/strider

Enter email []: vultr@example.com
Enter password []: ****
Is admin? (y/n) [n]y

Email:        vultr@example.com
Password:    ****
isAdmin:    y
OK? (y/n) [y]y
User created successfully! Enjoy.

Step 6: Manage Node.js Process with PM2

Install PM2 using NPM.

sudo npm install pm2 -g

Create a PM2 configuration file for your Strider app.

cd ~/strider && nano ecosystem.config.js

Populate the file with the following configuration. Make sure to replace the example IP 203.0.113.1 with the actual IP address of your Vultr instance.

module.exports = {
  apps : [{
    name   : "strider",
    script : "npm",
    args : "start",
    env: {
      "NODE_ENV": "production",
      "DB_URI": "mongodb://strider:striderpw@localhost:27017/strider",
      "SERVER_NAME": "http://203.0.113.1:3000",
      "HOST": "0.0.0.0",
      "PORT": "3000"
    }
  }]
}

Start your application.

pm2 start ecosystem.config.js

To make sure that your Strider instance automatically starts after rebooting, run the following command.

pm2 startup

Open your browser and navigate to http://203.0.113.1:3000 where 203.0.113.1 is your actual Vultr IP address. Login using the admin user you've created for Stride.