[Check_mk (english)] Upgrade to 1.6.0b3 broke pnp4nagios

I upgraded from 1.5.0p9 to 1.6.0b3 (both cre) and pnp4nagios ends in a redirect loop

https://checkmkhostname/sitename/check_mk/login.py?_origtarget=/sitename/pnp4nagios/index.php/graph?host=monitoredhost

goes to

https://checkmkhostname/sitename/pnp4nagios/index.php/graph?host=monitoredhost

which goes back to

https://checkmkhostname/sitename/check_mk/login.py?_origtarget=/sitename/pnp4nagios/index.php/graph?host=monitoredhost

and so on.

I checked the following ……

  • In all requests cookie “auth_sitename” is set

  • /omd/sites/sitename/etc/auth.serials is not empty

  • /opt/omd/sites/sitename/etc/pnp4nagios/config.d/cookie_auth.php has $conf[‘auth_multisite_enabled’] = TRUE; with all the correct paths

Any ideas ?

Thanks

Simone Bizzotto