Friday April 28, 2017


[ 2006.09.05]  

Progress on New Workflow and Distributed pymon

Yesterday a bunch of effort was made further integrating the new workflow code into the pymon code base. It's actually starting to get exciting now, since there's only one more step until completion. Currently, there is custom workflow code in pymon.clients.rules and this needs to be converted to actions that are taken by pymon.workflow.service onEnterState(), onLeaveState(), and onTransition().

In addition, the groundwork has been laid for unifying service state information from peered pymon instances (distributed pymon). The only thing left to do on that is figure out how to represent conflicting data from different sources (e.g., instance1 says service B is down and instance2 says that same service is up).

[ 2006.08.03]  

New Project Space at Google Code

We are pleased to annouce that the pymon project has a new project home at Google Code. Due to the terrible abuse of Trac by spammers, the previous project site was limited as far as who could update the wiki and submit issues to the tracker. With pymon at google, the security of the project resources should remain while increasing the convenience for users and contributors.

A significant bonus is that public subversion access will now be available for all to checkout.

SourceForge.net will continue to host pymon's website and downloads. However, from now on bug submissions and source code will be available only from code.google.com.

[ 2006.04.30]  

Distributed pymon In Progress

Tonight I began working on the code that will enabled pymon to work with peer instances on other machines, providing access to the locally hosted monitored services data as well as the status of the services monitored by its peer installations. The mechanism is very simple, employing the simplejson python library to publish service state data at regular intervals. When an administrator wants to peer a pymon installtion (or many installations), only a single entry need be updated/added in the Apache-style configuration file.

A fair amount of work remains to be done in the web UI: JSON data from all peered hosts needs to be read, updating the appropriate JavaScript Array, and then presented. In regards to the presentation, there will be several modes: just the local installation, the local installation and all peers each with their own section, and then a combined view of all local and peered monitored services for seemless and unified visual notification.

Mail List Has Moved

[ 2006.04.05]  The mail list for CoyMon is now officially hosted at google groups here. Soon, the old mailman instance will be turned off, so be sure you post to the new list linked above. Everyone has been migrated over, though, so there should be no interruption of service. Additionally, archives for the previous year will be hosted indefinitely in the same old location.

PyCon 2006 Sprint Summary

[ 2006.03.12]  I just posted a blog entry for the results of the pymon sprint at the python conference this year. It went really well, and we covered a lot of ground. After examining the requirements for componentizing pymon, we moved on to some fun stuff that people have been wanting us to work on for ages: an interactive shell for pymon whose functionality and command structure are inspired by Cisco's various OS (in particular the PIX OS). The mail list archives have a couple posts here and here that show the results in action.

Component and Unit Testing Refactor

[ 2006.02.27]  I started working on a new pymon branch today, one where I will be implementing full componentization (interfaces, adapters, adatper-lookups/registries, etc.) for pymon. This will not only extend the lifetime and maintainability of the entire code base, but will allow us to write elegant unit tests. Unit testing becomes ciritcal for complex code or even simple code that does lots of complex interactions (or expects a wide variety of data).