Nightly

Introduction

Nightly is a system for scheduling, monitoring and collecting outputs from configuration-defined command-line tasks. It is developed to support my daily research work since I can't find an existing solution that is lightweight (depends on nothing more than python, mysql and ssh) and customizable (written in less than a few hundreds lines of Python in total). I hope it might be useful to you as well.

Features:

• Define compute/storage resources declaratively
• Define job declaratively (similar to CI)
• Run job periodically, or as a daemon, or just once
  • For "just once", you can also run an ad-hoc command line job without defining it
• Automatically transfer job log and output to storage
• Monitor the progress via web panel
• Receive notification in job success/fail/...

Data objects:

• Job
• Resource

Components:

• Log DB: database containing job log (status) entries
• Scheduler: master node, launch jobs and monitor process status
• Runner: launch job on runner node through SSH
• Storage: persisting job output and selected files
• Panel: web panel daemon
• Notif: notification (only email for now)

Dependencies

poetry shell # get poetry: https://python-poetry.org/
poetry install
# symblink the virtual env created by poetry to `.venv` under project root as well

Config

There should be two files inside config folder, which is ignored by git. See example_config for examples and comments.

Users can use different config folders in different environment (production or development).

See https://app.sendgrid.com/guide/integrate/langs/python for email notification configuration keys sendgrid_api_key, notif_sender_email and notif_receiver_email.

Runbook

Initialize or update database:

make upgrade-db

Truncate and backup log table:

make truncate-all-log

Run the master daemon for scheduling jobs (on a server within tmux):

make run # it will tee the log to main.log as well

Run web panel daemon:

make panel # debug mode
export BASIC_AUTH_USERNAME=...; export BASIC_AUTH_PASSWORD=...; make panel-prod

Currently, panel server and master daemon must be on the same node.

Launch an ad-hoc job from command line:

scripts/launch-nightly sleep 10 # launch an ad-hoc one on the master node
scripts/launch-nightly --job ... # launch a defined job. Note that it must has "once" schedule

Demo

Homepage:

Output page:

Email notification: