Tomcat kann Port 8080 nicht auf 80 ändern

Ich möchte den Port 8080 in den Standard-HTTP-Port (80) ändern, um eine Jersey-Anwendung als HTTP-Restful-API zu verwenden. Deshalb habe ich den Port von 8080 auf 80 (innerhalb /etc/tomcat7/server.xml) ersetzt und ihn für die Verwendung von AUTHBIND ( /etc/defaults/tomcat7) konfiguriert . Nach dem Neustart des Dienstes fand ich diesen seltsamen Fehler in /var/log/tomcat7/catalina.out.

Kann jemand diesen Fehler übersetzen? Warum kann Tomcat den Socket nicht erstellen?

Ich benutze Ubuntu 14.04 und Tomcat7.

INFO: Initializing ProtocolHandler ["http-bio-80"]
Jul 25, 2014 4:08:28 AM org.apache.coyote.AbstractProtocol init
SEVERE: Failed to initialize end point associated with ProtocolHandler ["http-bio-80"]
java.net.SocketException: No such file or directory
    at java.net.PlainSocketImpl.socketBind(Native Method)
    at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376)
    at java.net.ServerSocket.bind(ServerSocket.java:376)
    at java.net.ServerSocket.<init>(ServerSocket.java:237)
    at java.net.ServerSocket.<init>(ServerSocket.java:181)
    at org.apache.tomcat.util.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:49)
    at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:397)
    at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:640)
    at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:434)
    at org.apache.coyote.http11.AbstractHttp11JsseProtocol.init(AbstractHttp11JsseProtocol.java:119)
    at org.apache.catalina.connector.Connector.initInternal(Connector.java:978)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
    at org.apache.catalina.core.StandardService.initInternal(StandardService.java:559)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
    at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:813)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:638)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:663)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:280)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:454)

Jul 25, 2014 4:08:28 AM org.apache.catalina.core.StandardService initInternal
SEVERE: Failed to initialize connector [Connector[HTTP/1.1-80]]
org.apache.catalina.LifecycleException: Failed to initialize component [Connector[HTTP/1.1-80]]
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:106)
    at org.apache.catalina.core.StandardService.initInternal(StandardService.java:559)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
    at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:813)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:638)
    at org.apache.catalina.startup.Catalina.load(Catalina.java:663)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.catalina.startup.Bootstrap.load(Bootstrap.java:280)
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:454)
Caused by: org.apache.catalina.LifecycleException: Protocol handler initialization failed
    at org.apache.catalina.connector.Connector.initInternal(Connector.java:980)
    at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
    ... 12 more
Caused by: java.net.SocketException: No such file or directory
    at java.net.PlainSocketImpl.socketBind(Native Method)
    at java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376)
    at java.net.ServerSocket.bind(ServerSocket.java:376)
    at java.net.ServerSocket.<init>(ServerSocket.java:237)
    at java.net.ServerSocket.<init>(ServerSocket.java:181)
    at org.apache.tomcat.util.net.DefaultServerSocketFactory.createSocket(DefaultServerSocketFactory.java:49)
    at org.apache.tomcat.util.net.JIoEndpoint.bind(JIoEndpoint.java:397)
    at org.apache.tomcat.util.net.AbstractEndpoint.init(AbstractEndpoint.java:640)
    at org.apache.coyote.AbstractProtocol.init(AbstractProtocol.java:434)
    at org.apache.coyote.http11.AbstractHttp11JsseProtocol.init(AbstractHttp11JsseProtocol.java:119)
    at org.apache.catalina.connector.Connector.initInternal(Connector.java:978)
    ... 13 more

Ich habe eine funktionierende Lösung gefunden:

sudo touch /etc/authbind/byport/80
sudo chmod 500 /etc/authbind/byport/80
sudo chown tomcat7 /etc/authbind/byport/80

/programming/23272666/tomcat7-bind-to-port-80-fails-in-ubuntu-14-04lts