I'm pulling my hairs on a suddenly occured - possibly - misconfiguration. But I can't find it out:
catalina.2023-11-28.log: 28-Nov-2023 13:15:43.742 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version name: Apache Tomcat/9.0.58 (Ubuntu) 28-Nov-2023 13:15:43.743 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built: Jan 6 1970 15:09:28 UTC 28-Nov-2023 13:15:43.744 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version number: 9.0.58.0 28-Nov-2023 13:15:43.744 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name: Linux 28-Nov-2023 13:15:43.744 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version: 5.15.0-89-generic 28-Nov-2023 13:15:43.745 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture: amd64 28-Nov-2023 13:15:43.745 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home: /usr/lib/jvm/java-11-openjdk-amd64 28-Nov-2023 13:15:43.745 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version: 11.0.20.1+1-post-Ubuntu-0ubuntu122.04 28-Nov-2023 13:15:43.745 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor: Ubuntu 28-Nov-2023 13:15:43.746 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE: /var/lib/tomcat9 28-Nov-2023 13:15:43.746 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME: /usr/share/tomcat9 28-Nov-2023 13:15:43.758 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.lang=ALL-UNNAMED 28-Nov-2023 13:15:43.759 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.io=ALL-UNNAMED 28-Nov-2023 13:15:43.759 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.util=ALL-UNNAMED 28-Nov-2023 13:15:43.760 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.util.concurrent=ALL-UNNAMED 28-Nov-2023 13:15:43.760 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED 28-Nov-2023 13:15:43.760 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/var/lib/tomcat9/conf/logging.properties 28-Nov-2023 13:15:43.761 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager 28-Nov-2023 13:15:43.761 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.awt.headless=true 28-Nov-2023 13:15:43.761 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=2048 28-Nov-2023 13:15:43.761 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources 28-Nov-2023 13:15:43.762 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dorg.apache.catalina.security.SecurityListener.UMASK=0027 28-Nov-2023 13:15:43.762 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dignore.endorsed.dirs= 28-Nov-2023 13:15:43.762 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/var/lib/tomcat9 28-Nov-2023 13:15:43.762 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/usr/share/tomcat9 28-Nov-2023 13:15:43.763 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/tmp 28-Nov-2023 13:15:43.768 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent Loaded Apache Tomcat Native library [1.2.31] using APR version [1.7.0]. 28-Nov-2023 13:15:43.769 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true], UDS [true]. 28-Nov-2023 13:15:43.771 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true] 28-Nov-2023 13:15:43.776 INFO [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL successfully initialized [OpenSSL 3.0.2 15 Mar 2022] 28-Nov-2023 13:15:44.229 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"] 28-Nov-2023 13:15:44.268 INFO [main] org.apache.catalina.startup.Catalina.load Server initialization in [799] milliseconds 28-Nov-2023 13:15:44.328 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service [Catalina] 28-Nov-2023 13:15:44.328 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet engine: [Apache Tomcat/9.0.58 (Ubuntu)] 28-Nov-2023 13:15:44.345 INFO [main] org.apache.catalina.startup.HostConfig.deployWAR Deploying web application archive [/var/lib/tomcat9/webapps/ROOT.war] 28-Nov-2023 13:15:54.672 INFO [main] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time. 28-Nov-2023 13:16:08.279 INFO [main] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive [/var/lib/tomcat9/webapps/ROOT.war] has finished in [23,934] ms 28-Nov-2023 13:16:08.282 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"] 28-Nov-2023 13:16:08.302 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in [24033] milliseconds root@mail:/var/lib/tomcat9/logs# lsof -i :8080 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME java 58986 tomcat 37u IPv6 571175 0t0 TCP *:http-alt (LISTEN) root@mail:/var/lib/tomcat9/logs# As a result my frontend server (haproxy) cannot connect to the tomcat9 backend server. What's wrong? -- Christoph
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