I have a tomcat 8 server fronted by Apache 2 (2.4.25) on debian 9.12 (stretch) system and I'm using ajp connector between apache2 an tomcat. JDK version is Oracle JDK 1.8.0_252-8u252-b09-1~deb9u1-b09. Everything was working fine until tomcat8 automatically updated to 8.5.54. But now when accesing application through ajp there is a 504 time-out Gateway error.
The tomcat8 server was automatically updated this morning
Start-Date: 2020-05-05 06:01:41
Commandline: /usr/bin/unattended-upgrade
Upgrade: libservlet3.1-java:amd64 (8.5.50-0+deb9u1, 8.5.54-0+deb9u1),
libtomcat8-java:amd64 (8.5.50-0+deb9u1, 8.5.54-0+deb9u1),
tomcat8-examples:amd64 (8.5.50-0+deb9u1, 8.5.54-0+deb9u1),
tomcat8-admin:amd64 (8.5.50-0+deb9u1, 8.5.54-0+deb9u1),
tomcat8-common:amd64 (8.5.50-0+deb9u1, 8.5.54-0+deb9u1), tomcat8:amd64
(8.5.50-0+deb9u1, 8.5.54-0+deb9u1), tomcat8-docs:amd64 (8.5.50-0+deb9u1,
8.5.54-0+deb9u1)
End-Date: 2020-05-05 06:01:52
Nothing changed in the apache2 and tomcat8 configuration file. I can still acces the tomcat manager interface and I can see my applications running. I can acces the tomcat applications with localhost, but not through the apache2 server.
For example, I have the application QCM1 deployed on the tomcat8 server. If I perform the following wget command
wget http://localhost:8080/QCM1
the response is correct, but when I perform
wget http://myserve.mydomain.fr/QCM1
there is 504 Gateway Time-out error
To enable redirection of HTTP request to the tomcat server, there is the following directive in the apache2 configuration file (that directive was working fie before the update of tomcat8)
ProxyPass /QCM1 ajp://localhost:8009/QCM1
What am I missing? Thanks for your help.
