Hi All, OS: Ubuntu 14.04.2 LTS Apache: 2.4.7-1ubuntu4.4 /etc/apache2/sites-available/000-default.conf file: Mutex file:/var/lock/apache2 rewrite-map I know, the PHP is not the best way for the RewriteMap+prg, but currently we can't change it. A new CMS is under development, but it will take at least 1 year yet, so I need to solve the redirect problems with the current configuration. Current situation: 1) We have one Amazon ELB with two instances for the CMS servicing. In the databases there are more hundred domains with more thousand redirects. (there are inside redirect: domain.tld/before --> domain.tld/after and to outside: olddomain.tld --> newdomain.tld as well). 2) The rewrite.php handles the redirects and I full debugged the rewrite.php it works correctly it always sends back the right url to the apache. 3) After a while the inside redirects will be stopped and the outside redirects work pell-mell (should be: client1-old-domain.tld --> client1-new-domain.tld however the redirect does it: client1-old-domain.tld --> client2-new-domain.tld and it's very embarrassing.) 4) as the number of the sites is growing the "after a while" is getting shorter. I believed the lack of the Mutex caused the problem but I've checked and the mutex is on: $ sudo apachectl -S | grep -i mutex Currently I have only one solution: the Apache reload. If I reload the apache (sudo service apache2 reload) the all problem go away for a while. So currently both of the two Apache webservers are reloaded every 5 minutes but this is not the desired way :) But I can't find the real problem and the solution. I've read the changelog to Apache 2.4.17 but I didn't find any relevant fixes. Does anybody have a guess what can cause the problem? What and how should I check? Thanks for any advice in advance! Best regards, Zsolt |