For the longest time I have wanted to get rid of dozen or so cron messages I receive every morning about things like DB backups, DB cleanups/vacuums, reporting etc. There are a number of solutions out there to help you manage the cron spam such as cronic, shush and cronwrap. They help by e-mailing you only if there is a problem however don’t store the cron output itself. To get around that issue I have developed cronologger which can be downloaded from
Cronologger is a BASH script that stores all the cron output into a database. I am using CouchDB since it is a great document oriented database that allows me to add attachments (blobs) to a document. I assume it would not be hard to use MongoDB, Riak and others.
Some of the benefits of this utility are
Reduce cron spam
Provide the ability to correlate adverse affects by overlaying cron events on e.g. Ganglia graphs
Provide a better report of all the batch jobs that ran, diff them with past jobs if they should look the same, etc.
Provide the ability to easily view what is currently running on the whole infrastructure ie. job_duration < 0
Review historical output
I am still working on web GUI for most of these things. I will gladly accept patches and new contributions.
Tip: To get view a list of documents in a CouchDB database you can use the _utils view e.g. http://localhost:5984/_utils/