On Wed, Jul 25, 2007 at 11:24:33AM +0200, Charles Goyard wrote:
my company has an heavily firewalled network. A rule that says "host1 can reach host2 on port 670" somehow vanish (ie human error), and your service stops working. Most of the time, you'll be aware of it, because you check at the service level, or the customers phones you. However, for some applications, such as backups, you'll know some hours, or days later.
So I come up with a suggestion: be able to check if a specific port is reachable for the client standpoint. Socket connection can be done via the bb utility. [picky servers like mysql would be handled differently].
I have some cases like that in my production environment. What I've done is to simply install the full Hobbit server on these nodes, and disable all tasks except the client- and networktest-tasks.
If you setup the BBLOCATION setting on these nodes, you can even configure them centrally in your normal bb-hosts file, and just scp or rsync it everywhere.
Regards, Henrik