Hi Stefan, > On Monday, 29 October 2018 20:31:54 CET Thorsten Glaser wrote: > > tglase@tglase:~ $ cat /var/log/apache2/error.log > > [Mon Oct 29 20:18:58.090841 2018] [ssl:emerg] [pid 17306] AH01903: Failed to > > configure CA certificate chain! > > [Mon Oct 29 20:18:58.090919 2018] [ssl:emerg] [pid 17306] AH02311: Fatal > > error initialising mod_ssl, exiting. > > See /var/log/apache2/error.log for more information AH00016: Configuration > > Failed > > Have you looked into /var/log/apache2/error.log if there is more > information?
the thing you quoted was exactly what was in /var/log/apache2/error.log as the “cat” showed… I just hit this on another machine, it’s the 2.4.35-1 → 2.4.37-1 upgrade that caused the failure. > If there is none, try adding loglevel ssl:debug and re-try. OK, thanks for the debugging help. That gives: [Sun Nov 04 17:05:02.839408 2018] [ssl:info] [pid 18196] AH01887: Init: Initializing (virtual) servers for SSL [Sun Nov 04 17:05:02.839427 2018] [ssl:info] [pid 18196] AH01914: Configuring server ci-busyapps.lan.tarent.de:443 for SSL protocol [Sun Nov 04 17:05:02.839433 2018] [ssl:debug] [pid 18196] ssl_engine_init.c(1748): AH10083: Init: (ci-busyapps.lan.tarent.de:443) mod_md support is unavailable. [Sun Nov 04 17:05:02.839729 2018] [ssl:emerg] [pid 18196] AH01903: Failed to configure CA certificate chain! [Sun Nov 04 17:05:02.839739 2018] [ssl:emerg] [pid 18196] AH02311: Fatal error initialising mod_ssl, exiting. See /var/log/apache2/error.log for more information AH00016: Configuration Failed So perhaps the mod_ssl backport / new feature was bad? On a hunch, I tried a2enmod md, but that does not change much: [Sun Nov 04 17:05:47.417353 2018] [ssl:info] [pid 18229] AH01887: Init: Initializing (virtual) servers for SSL [Sun Nov 04 17:05:47.417371 2018] [ssl:info] [pid 18229] AH01914: Configuring server ci-busyapps.lan.tarent.de:443 for SSL protocol [Sun Nov 04 17:05:47.417377 2018] [ssl:debug] [pid 18229] ssl_engine_init.c(1748): AH10083: Init: (ci-busyapps.lan.tarent.de:443) mod_md support is available. [Sun Nov 04 17:05:47.417663 2018] [ssl:emerg] [pid 18229] AH01903: Failed to configure CA certificate chain! [Sun Nov 04 17:05:47.417673 2018] [ssl:emerg] [pid 18229] AH02311: Fatal error initialising mod_ssl, exiting. See /var/log/apache2/error.log for more information AH00016: Configuration Failed More debugging data points: this did not occur immediately after the package upgrade, only when I did an /etc/init.d/apache2 stop followed by start. Worse, this persists after downgrading apache2, apache2-bin, apache2-data, apache2-utils to 2.4.35-1 (?!?!?!). Dazed and confused, //mirabilos -- tarent solutions GmbH Rochusstraße 2-4, D-53123 Bonn • http://www.tarent.de/ Tel: +49 228 54881-393 • Fax: +49 228 54881-235 HRB 5168 (AG Bonn) • USt-ID (VAT): DE122264941 Geschäftsführer: Dr. Stefan Barth, Kai Ebenrett, Boris Esser, Alexander Steeg