A note about mod_shib2 and mod_http2

[Cantor, Scott]

On 8/18/17, 8:16 PM, "users on behalf of Jacob Lundberg" <users-bounces at shibboleth.net on behalf of jacob at collegenet.com> wrote:

> The stuck httpd threads appear to be stuck in mod_http2 code called by
> mod_shib2 code.  F.e.:

That's likely a locking bug reported and patched months ago (the original reporter was kind enough to debug it and provide a fix). I don't have the issue link to hand, but it isn't released yet in any case.

> Disabling HTTP/2 restores normal behavior.  I'm not certain whether it
> will be mod_shib2 or mod_http2 that needs to be adjusted to resolve the
> issue.  We are using SP version 2.6.0.  At this point we have decided to
> consider Apache httpd's HTTP/2 support immature and will not be using it
> this year.

It's nothing to do with their code, and all you have to do is not modify the configuration file without a restart (or disable reloading support, though that's a bit tricky).

-- Scott