FreeRadius hanging

[Alan DeKok]

Phil Mayers wrote:
> The occurrences tended to be spaced weeks apart, and consist of clusters
> of hangs 4-12 hours apart over a few days. I had formed the hypothesis
> that a particular client or type of client was triggering it - when they
> realised they could never authenticate (because unknown to them, they
> were hanging the server) they went away.

  That's unfortunate...

> These problems generally manifest in one of two ways:
> 
>  * the process hangs (and is unkillable except by -9) - most common
>  * the process CPU runs to 100% - less common

  Sounds like it's trying to dump core after allocating tons of memory,
and getting a SEGV.

> The service basically does PEAP/MS-CHAP with ntlm_auth helper and
> rlm_sql_postgresql; the database does not seem to be the issue. We are
> not HUPing the server.

  Can you give a list of modules you are using?

> Does anyone have any thoughts on what I might to do narrow the problem
> down?

  If everyone with this issue can give a list of modules they use, along
with which versions work, and which ones don't, that would help.

  Alan DeKok.