On 05/04/2019 11:15, M. Manna wrote: > After a few more checks, we have identified a mismatch (our side) where > 1.2.18 APR (tcnative-1.dll) was being used instead of 1.2.19 (packaged with > 8.5.37. > > Usually, we get an error with tomcat startup if the APR version isn't > meeting the minimum version requirements. But for 8.5.37 when started with > *1.2.18*, we didn't get this error. > > Could someone confirm whether 1.2.19 was the minimum version requirement > for 8.5.37?
Since Tomcat is open source you are able to look this up yourself. https://github.com/apache/tomcat/blob/8.5.37/java/org/apache/catalina/core/AprLifecycleListener.java#L67 Note the difference between minimum required version and minimum recommended version. Generally, I'd recommend running the latest version of Tomcat-Native available. > On Fri, 5 Apr 2019 at 01:39, M. Manna <manme...@gmail.com> wrote: > >> Hello all, >> >> Since yesterday all of our loadbalanced tomcat servers have been refusing >> further connection intermittently. During our internal stress testing, >> we’ve managed to reproduce the issue where maximum number of >> threads/connections to Catalina were reached for one server, but then the >> rest were loadbalanced to others. Eventually, everyone starts failing >> health checks the Citrix network health monitor on port 80 and 8443. >> Because all of them were eventually running out. >> >> We wanted to pinpoint the time of the first hit observers with Catalina >> logs to see when max connections are reached or maxThreads are used. Is >> there any log level for Catalina/localhost logs which we can use to see >> this message ? If so which level should we be using ? INFO should be fine. >> Also, we are using 8.5.37 with our own TSL cipher suites etc. this started >> happening only since last few days. We would need to find out whether any >> application threads are doubling up and exhausting the APR connectors >> capacity for max threads/connections by holding them indefinitely. >> >> Any suggestion/help you can give here would be appreciated. Take 3 thread dumps ~5s apart and compare them. Mark --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
