tomcat 启动但它没有监听任何端口答案

【问题标题】：tomcat starts but its not listening on any porttomcat 启动但它没有监听任何端口
【发布时间】：2019-02-18 11:02:09
【问题描述】：

我有一个配置为在端口 8380 上运行的 tomcat 服务。该站点直到最近才运行良好。我开始在 apache 上的 mod_jk.log 中看到这一点：

[3409:140197396281344] [info] jk_open_socket::jk_connect.c (627): connect to 127.0.0.1:8309 failed (errno=111)
[3409:140197396281344] [info] ajp_connect_to_endpoint::jk_ajp_common.c (995): Failed opening socket to (127.0.0.1:8309) (errno=111)
[3409:140197396281344] [error] ajp_send_request::jk_ajp_common.c (1630): (worker1) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=111)
[3409:140197396281344] [info] ajp_service::jk_ajp_common.c (2623): (worker1) sending request to tomcat failed (recoverable), because of error during request sending (attempt=1)
[3409:140197396281344] [info] jk_open_socket::jk_connect.c (627): connect to 127.0.0.1:8309 failed (errno=111)
[3409:140197396281344] [info] ajp_connect_to_endpoint::jk_ajp_common.c (995): Failed opening socket to (127.0.0.1:8309) (errno=111)
[3409:140197396281344] [error] ajp_send_request::jk_ajp_common.c (1630): (worker1) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=111)
[3409:140197396281344] [info] ajp_service::jk_ajp_common.c (2623): (worker1) sending request to tomcat failed (recoverable), because of error during request sending (attempt=2)
[3409:140197396281344] [error] ajp_service::jk_ajp_common.c (2643): (worker1) connecting to tomcat failed.
[3409:140197396281344] [info] jk_handler::mod_jk.c (2788): Service error=-3 for worker=worker1

我能够启动 tomcat 服务，但它应该监听的端口不接受连接。 nmap 和 netstat 不显示可用的端口。为了以防万一，我也尝试过远程登录到端口，但正如我所料，没有响应。我已经停止了防火墙，以防它是 iptables 规则问题，但这也没有效果。我已经通过上面的尝试解决了类似的问题，但没有一个适用于我的问题。我不确定此时还可以尝试什么，所以我向你们所有人求助！

对于这个特定的主机，CATALINA_BASE 来自已安装的 nfs 导出。我在此服务器上托管了 2 个 tomcat 站点。为了测试，我禁用了一个启动，因为它们都有相同的问题。我想如果我可以让 1 运行另一个也可以。

server.xml：

<Server port="8105" shutdown="SHUTDOWN">
<Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
  <Listener className="org.apache.catalina.core.JasperListener" />
  <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
  <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
  <GlobalNamingResources>
    <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />
  </GlobalNamingResources>
  <Service name="Catalina">
    <Connector port="8380" protocol="HTTP/1.1"
               connectionTimeout="20000"
               URIEncoding="UTF-8"
               redirectPort="8443" />
    <Connector port="8309" protocol="AJP/1.3" redirectPort="8443" />
    <Engine name="Catalina" defaultHost="localhost">
      <Realm className="org.apache.catalina.realm.LockOutRealm">
        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
               resourceName="UserDatabase"/>
      </Realm>
      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">
        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhost_access_log." suffix=".txt"
               pattern="%h %l %u %t &quot;%r&quot; %s %b" />
      </Host>
      <Host name="mytomcat.site.org" appBase="webapps"
            unpackWARs="true" autoDeploy="true">
      </Host>
    </Engine>
  </Service>
</Server>

我在 apache 中的 worker.properties。每个 tomcat 站点我有 2 个工人 1 个。

workers.tomcat_home=/opt/tomcat
workers.java_home=/usr/local/jdk/jre
ps=/

# Define workers
worker.list=worker1
worker.list=worker2

# Set properties for worker1 - localhost
worker.worker1.type=ajp13
worker.worker1.host=127.0.0.1
worker.worker1.port=8309
worker.worker1.socket_keepalive=True
worker.worker1.socket_timeout=300

# Set properties for worker2 - localhost
worker.worker2.type=ajp13
worker.worker2.host=127.0.0.1
worker.worker2.port=8409
worker.worker2.socket_keepalive=True
worker.worker2.socket_timeout=300

Apache 可以正常启动并且可以正常提供静态页面。 tomcat 启动正常，但就像我说的它没有监听任何端口。

任何帮助将不胜感激。蒂亚！

更多信息：我在 JAVA_OPTS var 中使用 -debug 运行了初始化脚本。我在滚动到标准输出的输出底部看到以下内容：

...
user changed to 'daemon'
User 'daemon' validated
Attempting to locate Java Home in /usr/local/jdk
Attempting to locate VM configuration file /usr/local/jdk/jre/lib/jvm.cfg
Attempting to locate VM configuration file /usr/local/jdk/lib/jvm.cfg
Attempting to locate VM configuration file /usr/local/jdk/jre/lib/amd64/jvm.cfg
Found VM configuration file at /usr/local/jdk/jre/lib/amd64/jvm.cfg
Found VM server definition in configuration
Checking library /usr/local/jdk/jre/lib/amd64/server/libjvm.so
Found VM client definition in configuration
Checking library /usr/local/jdk/jre/lib/amd64/client/libjvm.so
Checking library /usr/local/jdk/lib/amd64/client/libjvm.so
Cannot locate library for VM client (skipping)
Found VM hotspot definition in configuration
Checking library /usr/local/jdk/jre/lib/amd64/hotspot/libjvm.so
Checking library /usr/local/jdk/lib/amd64/hotspot/libjvm.so
Cannot locate library for VM hotspot (skipping)
Found VM classic definition in configuration
Checking library /usr/local/jdk/jre/lib/amd64/classic/libjvm.so
Checking library /usr/local/jdk/lib/amd64/classic/libjvm.so
Cannot locate library for VM classic (skipping)
Found VM native definition in configuration
Checking library /usr/local/jdk/jre/lib/amd64/native/libjvm.so
Checking library /usr/localjdk/lib/amd64/native/libjvm.so
Cannot locate library for VM native (skipping)
Found VM green definition in configuration
Checking library /usr/local/jdk/jre/lib/amd64/green/libjvm.so
Checking library /usr/local/jdk/lib/amd64/green/libjvm.so
Cannot locate library for VM green (skipping)
Java Home located in /usr/local/jdk
+-- DUMPING JAVA HOME STRUCTURE ------------------------
| Java Home:       "/usr/local/jdk"
| Java VM Config.: "/usr/local/jdk/jre/lib/amd64/jvm.cfg"
| Found JVMs:      1
| JVM Name:        "server"
|                  "/usr/local/jdk/jre/lib/amd64/server/libjvm.so"
+-------------------------------------------------------
Running w/ LD_LIBRARY_PATH=/usr/local/jdk/jre/lib/amd64/server:/usr/local/jdk/jre/lib/amd64
wait_child 12035
redirecting stdout to /opt/www/mytomcat/logs/catalina-daemon.out and stderr to &1

然后它返回到 shell 提示符。如果它成功完成，它将有额外的行滚动出来：

get_pidf: 5 in /opt/www/mytomcat/logs/catalina-daemon.pid
get_pidf: pid 97253
check_tmp_file: /tmp/97253.jsvc_up
get_pidf: 5 in /opt/www/mytomcat/logs/catalina-daemon.pid
get_pidf: pid 97253
check_tmp_file: /tmp/97253.jsvc_up
get_pidf: 5 in /opt/www/mytomcat/logs/catalina-daemon.pid
get_pidf: pid 97253
check_tmp_file: /tmp/97253.jsvc_up
get_pidf: 5 in /opt/www/mytomcat/logs/catalina-daemon.pid
get_pidf: pid 97253
check_tmp_file: /tmp/97253.jsvc_up
get_pidf: 5 in /opt/www/mytomcat/logs/catalina-daemon.pid
get_pidf: pid 97253
check_tmp_file: /tmp/97253.jsvc_up
get_pidf: 5 in /opt/www/mytomcat/logs/catalina-daemon.pid
get_pidf: pid 97253
check_tmp_file: /tmp/97253.jsvc_up

当我希望子进程以daemon 运行时，我还注意到两个tomcat 进程都以root 运行。不知道为什么会发生这种情况，但可能与问题有关。

【问题讨论】：

apache-tomcat/logs/catalina.out 说明了什么？任何失败的连接器启动？堆栈跟踪会有所帮助。 /manager 服务器状态页面说明了什么（如果可以访问）？任何活动的 ajp 连接器？
Selaron，感谢您的回复。 catalina-daemon.out 是空的。没有任何连接器启动失败的日志。 /manager 页面没有出现。端口未在侦听，因此我无法访问该页面。没有活动的 ajp 连接器。 nmap 和 netstat 不显示来自 tomcat 的任何活动端口。奇怪的是服务启动了，但没有端口在监听它。

标签： java apache tomcat

【解决方案1】：

根据调试输出，我开始尝试一系列不同的东西，特别是围绕 catalina-daemon.out 和 catalina-daemon.pid 文件。事实证明，因为这些文件位于 nfs 位置，所以会导致服务启动但未侦听的奇怪问题。一旦我将这些移动到本地文件系统，服务就会启动并且它再次在正确的端口上监听。我还注意到子 tomcat 进程切换到非特权用户守护进程。页面又可以访问了。

不完全确定为什么它以前可以工作，但突然之间我没有对服务器进行任何更改。从为 CATALINA_BASE 提供服务的 zfs 机器的 nfs 导出中一定发生了一些变化。不知何故，这可能暴露了一个在 Tomcat 服务器上导致此问题的错误。

【讨论】：