Sawdog is a script which informs the sysops of mission critical servers in the case of a failure, like a sort of watchdog. The script executes a given set of Expect scripts, and if one of the Expect scripts fails, it sends an email or an SMS, or executes a command. You can probe for more than just reachability because the Expect scripts can check if the responses on the ports are correct.
The diffenence to netsaint is sawdog's simplicity. You can use the netsaint plugins, they are fast but more complex and hard to adapt to your needs. You just have to change the return values to make them work.
There isn't a real online documentation yet. You can look out for the README file in the latest source tree, or consult the pdf/ps manual, which covers almost everything. I may switch to SGML in future.documentation.pdf
Yes. There is a running copy of sawdog. It is for testing and demonstration purpose. If you are interested in this script, do not copy the files from this directory. There are some tarballs of the latest stable release in the download directory.
The sawdog.pl script and the small expect scripts are symlinks to the latest developing version.sawdog.active/
You can see the progress of sawdog development by looking at the development code tree. Don't download this code unless you are really sure that you want to run a instable version. Of corse feel free to imropve the code!history