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Overview

Cronicle is a multi-server task scheduler and runner, with a web based front-end UI. It handles both scheduled, repeating and on-demand jobs, targeting any number of worker servers, with real-time stats and live log viewer. It's basically a fancy Cron replacement written in Node.js. You can give it simple shell commands, or write Plugins in virtually any language.

Main Screenshot

Features at a Glance

Documentation

The Cronicle documentation is split up across these files:

Glossary

A quick introduction to some common terms used in Cronicle:

TermDescription
Primary ServerThe primary server which keeps time and runs the scheduler, assigning jobs to other servers, and/or itself.
Backup ServerA worker server which will automatically become primary and take over duties if the current primary dies.
Worker ServerA server which sits idle until it is assigned jobs by the primary server.
Server GroupA named group of servers which can be targeted by events, and tagged as "primary eligible", or "worker only".
API KeyA special key that can be used by external apps to send API requests into Cronicle. Remotely trigger jobs, etc.
UserA human user account, which has a username and a password. Passwords are salted and hashed with bcrypt.
PluginAny executable script in any language, which runs a job and reads/writes JSON to communicate with Cronicle.
ScheduleThe list of events, which are scheduled to run at particular times, on particular servers.
CategoryEvents can be assigned to categories which define defaults and optionally a color highlight in the UI.
EventAn entry in the schedule, which may run once or many times at any interval. Each event points to a Plugin, and a server or group to run it.
JobA running instance of an event. If an event is set to run hourly, then a new job will be created every hour.

Colophon

We stand on the shoulders of giants. Cronicle was built using these awesome Node modules:

Module NameDescriptionLicense
asyncHigher-order functions and common patterns for asynchronous code.MIT
bcrypt-nodeNative JS implementation of BCrypt for Node.BSD 3-Clause
chart.jsSimple HTML5 charts using the canvas element.MIT
daemonAdd-on for creating *nix daemons.MIT
errnoNode.js libuv errno details exposed.MIT
font-awesomeThe iconic font and CSS framework.OFL-1.1 and MIT
form-dataA library to create readable "multipart/form-data" streams. Can be used to submit forms and file uploads to other web applications.MIT
formidableA Node.js module for parsing form data, especially file uploads.MIT
globFilesystem globber (*.js).ISC
jstimezonedetectAutomatically detects the client or server timezone.MIT
jqueryJavaScript library for DOM operations.MIT
mdiMaterial Design Webfont. This includes the Stock and Community icons in a single webfont collection.OFL-1.1 and MIT
mkdirpRecursively mkdir, like mkdir -p.MIT
momentParse, validate, manipulate, and display dates.MIT
moment-timezoneParse and display moments in any timezone.MIT
netmaskParses and understands IPv4 CIDR blocks so they can be explored and compared.MIT
node-staticA simple, compliant file streaming module for node.MIT
nodemailerEasy as cake e-mail sending from your Node.js applications.MIT
shell-quoteQuote and parse shell commands.MIT
socket.ioNode.js real-time framework server (Websockets).MIT
socket.io-clientClient library for server-to-server socket.io connections.MIT
uglify-jsJavaScript parser, mangler/compressor and beautifier toolkit.BSD-2-Clause
zxcvbnRealistic password strength estimation, from Dropbox.MIT

Companies Using Cronicle

Cronicle is known to be in use by the following companies:

License

The MIT License (MIT)

Copyright (c) 2015 - 2023 Joseph Huckaby

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.