Booking.com

Enviroment:

• Ubuntu: 16.04
• Python: 3.6.2
• Backend: Flask
• Test: Swagger
• Database: MongoDB, Redis
• Asynchronous: Celery (Redis)
• Monitoring Tool: Supervisor, Prometheus, Grafana
• Collecting Logs: Logstash

Install Docker

$ sudo apt-get update

$ sudo apt-get install apt-transport-https ca-certificates curl gnupg-agent software-properties-common

$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

$ sudo apt-key fingerprint 0EBFCD88

$ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu
$(lsb_release -cs)
stable"

$ sudo apt-get update

$ sudo apt-get install docker-ce docker-ce-cli containerd.io

Install Docker Compose

$ sudo apt install docker-compose

Deploy Booking.com Application

• Deploy

$ cd ./docker_stg
$ sudo docker-compose up --build -d

• Check docker process

$ sudo docker ps

• Get docker log

$ sudo docker-compose logs --tail=20 -f flask

Swagger

• http://localhost/

Monitor process

$ supervisorctl

• http://localhost:9001

Monitor uwsgi application

uwsgitop 127.0.0.1:5002

Monitor celery worker

• http://localhost:5001/tasks

Prometheus Monitor

• http://localhost:9090/targets

Grafana Monitor

• http://localhost:3000
• Username: admin
• Password: pass

Nginx Log Monitor

• http://localhost:5601

Note1: How to allow certain ips connect mongodb?

• vim /etc/mongod.conf

    # bindIp: 127.0.0.1
    bindIp: 0.0.0.0  

• restart mongodb

$ sudo service mongod restart
$ sudo service mongod status

• firewall settings

$ sudo ufw enable
$ sudo ufw deny  from 192.168.18.0/24 to any port 27017
$ sudo ufw allow from 192.168.18.0/24 to any port 27017
$ sudo ufw status

Note2: How to create multiple user on mongodb?

• create user

> use booking;
switched to db booking
> db.createUser(
  {
    user: "dbadmin",
    pwd: "StrongPassword",
    roles: [ { role: "readWrite", db: "booking" } ]
  }
)
> exit
bye

• vim /etc/mongod.conf

security:
  authorization: enabled

• restart mongodb

$ sudo service mongod restart
$ sudo service mongod status

Reference

• https://blog.techbridge.cc/2019/08/26/how-to-use-prometheus-grafana-in-flask-app/