Simple AWS

Features

• Provision N number of EC2 on a date for M number of hours
• Show how many EC2 instances are running
• Show IP addresses of each EC2 instances
• Show auto-scaling history
• Remove specific instances
• Configuration file to mark certain instance or autoscaling group as read-only.

Requirements

• Access control
• API calls

APIs

GET     - List or show
PUT     - Update or replace
POST    - Create or add new
DELETE  - Delete

Provision:

/simpleaws/provision/{n}/{date}/{time}/{hours}
/simpleaws/provision/{n}/{date}/{time}
/simpleaws/provision/{n}/{date}
/simpleaws/provision/{n}

Show scheduled provisions:

/simpleaws/provision

Show number of EC2 instances running:

/simpleaws/ec2/running

Show IP address of each ec2 instances:

/simpleaws/ec2/public-ip
/simpleaws/ec2/private-ip
/simpleaws/ec2/status

Show auto-scaling groups:

/simpleaws/auto-scaling

Show auto-scaling history:

/simpleaws/auto-scaling/{id}/

Details

• Provisioning is done through setting up cron jobs.
• Cron jobs can be normal user cron job. No root permission is required.
• Schedule is written to database. Cron job is run every 15 minutes to check for schedule.
• Provisioning is run three hours before the user-specified date time.

Technical notes

• SQLite3 is used as storage

Schema

schedule:

rowid               (implicit)  - Generated by sqlite
create_at           (int)       - UNIX timestamp of record creation
schedule_at         (int)       - UNIX timestamp of user-specified schedule time
run_at              (int)       - UNIX timestamp of the schedule got kicked off by cron job
quantity            (int)       - Desired quantity / number of EC2

create table schedule (
    create_at INTEGER,
    schedule_at INTEGER,
    run_at INTEGER,
    quantity INTEGER);