package: x2gobroker version: 0.0.4.0-0~1038~ubuntu16.04.1 priority: enhancement
We encountered another corner case very annoying. The whole broker stack does its work quite well when everything works as expected (which is mostly the case). A failing server for example is perfectly handled, loadchecker simply disable this server from the list and thus, broker sends users to remaining live servers. Problems are beginning when your servers misbehaves.
Loadchecker mainly checks :
This is okay but not enough to be sure that a server can handle incoming connections, for example, for our needs, we should make sure that :
In our recent problems, for unknown reasons, some servers were having troubles joining the Active Directory domain and thus, user auth was failing. On the broker/loadchecker side, the server is perfectly working and this is even one of the best performing server since it is empty so it allways tries to redirect incoming connections to this server and since users can't auth, it fails and blocks every new connections. With extended checks, this server would have been considered offline from the loadchecker point of view and thus, it would have just been out of the load balancing.
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