Fleetio Dyno Killer

Utility to restart web dynos on heroku that are exceed a certain metric threshold. Currently supported metrics are:

• Memory
• 1 Minute Load Average

It relies on heroku's log-runtime-metrics for the data and uses heroku's PlatformAPI gem to actually restart the dynos.

It is currently running on heroku, https://dashboard.heroku.com/apps/fleetio-dyno-killer

Usage

1. Setup your env file with the following variables:

APP_NAME
HEROKU_TOKEN
LOAD_1MIN_THRESHOLD
MEMORY_THRESHOLD_IN_MB
DD_API_KEY
DD_APP_KEY

2. Run one of the four rake tasks

[heroku run || dotenv] rake:dynos:list_over_memory_threshold
[heroku run || dotenv] rake:dynos:restart_over_memory_threshold

# or

[heroku run || dotenv] rake:dynos:list_over_load_threshold
[heroku run || dotenv] rake:dynos:restart_over_load_threshold

Details

This utility exposes 4 primary rake tasks, all under the dynos namespace:

list_over_memory_threshold

Lists all web dynos currently over the memory threshold defined by MEMORY_THRESHOLD_IN_MB

restart_over_memory_threshold

Restarts all web dynos currently over the memory threshold defined by MEMORY_THRESHOLD_IN_MB

list_over_load_threshold

Lists all web dynos currently over the load threshold defined by LOAD_1MIN_THRESHOLD

restart_over_load_threshold

Restarts all web dynos currently over the load threshold defined by LOAD_1MIN_THRESHOLD