lnc-challenge is an set of Ansible roles that deploys a simple nodejs web server and...

• configures system: common packages, set time zone...
• installs pm2 to manage node processes
• installs nginx as reverse proxy (HTTP/HTTPS)
• installs scripts to load tests and parse log
• configures cron job to send emails every 12 midnight

• Ubuntu 16.04 LTS
• Ansible >= 2.2
• User with sudo privilegies

First of all, download this repository:

$ git clone https://github.com/raphapr/lnc-challenge.git && cd lnc-challenge

Install required roles:

$ sudo ansible-galaxy install -r requirements.yml

$ ansible-playbook -i local deploy.yml

$ ansible-playbook -i local update-app.yml

$ ansible-playbook -i local rollback-app.yml -e "n=1"

A simple script that does a load test on the web server and returns maximum throughput (requests/sec). It uses wrk with 18 threads and 200 connections.

$ load_tests

Maximum throughput: 1923.41 requests/sec

A simple script that parse nginx access log (sudo privilegies needed).

$ logparser

 243971 200 /
    1 404   /holycow
    622 499 /

As root:

$ pm2 logs lnc-server

As root:

$ cat /var/log/nginx/access.log

Here is a list of all the default variables for this role, which are also available in vars/default.yml:

#Configuration
repo_version: master
app_name: lncserver
nodejs_version: 6.x
timezone: America/Maceio

# pm2
pm2_user: root
pm2_service_name: pm2-root
pm2_service_enabled: yes
pm2_service_state: started

# ssmtp
ssmtp_root: lnc.chall3ng3@gmail.com
ssmtp_mailhub: smtp.gmail.com:587
ssmtp_hostname: localhost
ssmtp_rewrite_domain: gmail.com
ssmtp_auth_user: lnc.chall3ng3@gmail.com
ssmtp_auth_pass: dexqiyfdavjeimgc
ssmtp_use_starttls: "YES"
ssmtp_use_tls: "YES"
ssmtp_from_line_override: "YES"

# email receiver
ssmtp_receiver: lnc.chall3ng3@gmail.com

Deploy variables are in vars/{deploy,rollback,update}.yml