A Rack project that runs on port 8080 and returns (a) uptime and (b) buckets with the counts of visits per visitor IP address.

My example site is http://ibmsite.homewor.cc/

Note that the ELB IPs (probably the highest-ranked visitors at any time) are included, and regularly increment since they are performing health checks.

See eb.md

If running on AL or another RHEL-based platform:

sudo yum group install "Development Tools"

RVM is ideal

# Install RVM
\curl -sSL https://get.rvm.io | bash -s stable --ruby
# Use the same Ruby I used to develop this package
rvm use --default ruby-2.5.1

$ cd ibmsite && bundle install

Fetching gem metadata from https://rubygems.org/..............
Resolving dependencies...
Using bundler 1.16.2
Using daemons 1.2.6
Using eventmachine 1.2.7
Using rack 2.0.5
Using thin 1.7.2
Bundle complete! 2 Gemfile dependencies, 5 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.

$ bundle exec rackup -E $TEST_DEVELOPMENT_DEPLOY

Thin web server (v1.7.2 codename Bachmanity)
Maximum connections set to 1024
Listening on 0.0.0.0:8080, CTRL+C to stop

curl $SERVER_IP:8080

{"siteUpSince":"2018-10-14 03:43:46 +0200","IPs":{"123.45.67.89":9}}

curl $SERVER_IP:8080/system

{"siteUpSince":"2018-01-07 00:07:14 +0100","IPs":{"123.45.167.89":4}}

DevOps HOMEWORK Challenge

Here is the assignment for the DevOps candidate. The assignment uses standard IETF requirements terms: https://www.ietf.org/rfc/rfc2119.txt

Agile Story:

As a DevOps candidate I want to create a simple website so that I can showcase my ability with cloud technology, linux, automation, scripting, and documentation.

Acceptance Criteria:

Must develop a simple website and deploy it to your favorite public cloud provider. AWS may be used.

Website Functionality

Must receive HTTP Requests of the form: http://yoursite/ The web page must show the the application launch time. The web page must show all unique IPs from scanning the web server access log. The web page must show the count per IP address. The web page may look like the following …

This site has been up since <site up datetime>       
These are all of the IP addresses that are found in the web container log files
<IP1>
<IP2>
… 

HTTP Response format should be in HTML or JSON

Deployment

Deployment should be automated as much as possible May use a tool like Terraform or AWS Cloudformation to create the cloud infrastructure
Should deploy the server/container and the web app

Deliverables

Must provide link to public repo (github, gitlab, bitbucket, etc) All files and code must be included in the repo. Complete instructions on how to setup and test the solution must be included in the repo. Instructions should be targeted to a junior level DevOps engineer

Example Usage

Request #1: curl http://yoursite/
Response: (e.g. as json)

“siteUpSince” : “2018-07-25T2300000Z”,
“IPs” : {
  “10.100.220.1” : 1
  }
}

Request #2: curl http://yoursite/
Response: (e.g. as json)

“siteUpSince” : “2018-07-25T2300000Z”,
“IPs” : {
  “10.100.220.1” : 2
  }
}

Request #N: curl http://yoursite/ (from different IPs)
Response: (e.g. as json)

“siteUpSince” : “2018-07-25T2300000Z”,
“IPs” : {
  “10.100.220.1” : 2,
  “10.100.220.8” : 1,
  “10.100.221.3” : 5
  }
}