Cart is a microservice that is responsible for Cart Service in RobotShop e-commerce portal.
Developer has chosen NodeJs, Check with developer which version of NodeJS is needed. Developer has set a context that it can work with NodeJS >18
Install NodeJS, By default NodeJS 10 is available, We would like to enable 18 version and install list.
you can list modules by using dnf module list
dnf module disable nodejs -y
dnf module enable nodejs:18 -y
Install NodeJS
dnf install nodejs -y
Configure the application.
Add application User
useradd roboshop
Lets setup an app directory.
mkdir /app
Download the application code to created app directory.
curl -L -o /tmp/cart.zip https://roboshop-builds.s3.amazonaws.com/cart.zip
cd /app
unzip /tmp/cart.zip
Every application is developed by development team will have some common softwares that they use as libraries. This application also have the same way of defined dependencies in the application configuration.
Lets download the dependencies.
cd /app
npm install
We need to setup a new service in systemd so systemctl can manage this service
Setup SystemD Cart Service
vim /etc/systemd/system/cart.service
[Unit]
Description = Cart Service
[Service]
User=roboshop
Environment=REDIS_HOST=<REDIS-SERVER-IP>
Environment=CATALOGUE_HOST=<CATALOGUE-SERVER-IP>
Environment=CATALOGUE_PORT=8080
ExecStart=/bin/node /app/server.js
SyslogIdentifier=cart
[Install]
WantedBy=multi-user.target
Load the service.
systemctl daemon-reload
systemctl enable cart
systemctl start cart