Tomcat

mod_jk 產生錯誤 smh errno=13

  • April 23, 2019

我正在嘗試mod_jk用於負載平衡。

負載均衡器: 172.17.8.189(HTTPD+mod_jk)節點

1:172.17.8.193(apache tomcat實例1)節點

2:172.17.8.196(apache tomcat實例2)

我檢查了我的 tomcat 實例,它們都在 8009 監聽。但是,我不斷收到這些錯誤。

[Tue Jun 18 17:49:14 2013][18057:47118810657648] [error] init_jk::mod_jk.c (3348): Initializing shm:/etc/httpd/logs/jk.shm.18057 errno=13. Load balancing workers will not function properly.
[Tue Jun 18 17:49:14 2013][18057:47118810657648] [info] init_jk::mod_jk.c (3365): mod_jk/1.2.37 initialized

調試日誌是

   [Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_set_time_fmt::jk_util.c (461): Pre-processed log time stamp format is '[%a %b %d %H:%M:%S %Y]'
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] uri_worker_map_open::jk_uri_worker_map.c (865): rule map size is 2
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] uri_worker_map_add::jk_uri_worker_map.c (815): wildchar rule '/jasperserver-pro/*=loadbalancer' source 'JkMount' was added
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] uri_worker_map_add::jk_uri_worker_map.c (824): exact rule '/jkstatus/=status' source 'JkMount' was added
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] uri_worker_map_dump::jk_uri_worker_map.c (176): uri map dump after map open: id=0, index=0 file='(null)' reject_unsafe=0 reload=60 modified=0 checked=0
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] uri_worker_map_dump::jk_uri_worker_map.c (182): generation 0: size=0 nosize=0 capacity=0
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] uri_worker_map_dump::jk_uri_worker_map.c (182): generation 1: size=2 nosize=0 capacity=4
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] uri_worker_map_dump::jk_uri_worker_map.c (195): NEXT (1) map #0: uri=/jasperserver-pro/* worker=loadbalancer context=/jasperserver-pro/* source=JkMount type=Wildchar len=19
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] uri_worker_map_dump::jk_uri_worker_map.c (195): NEXT (1) map #1: uri=/jkstatus/ worker=status context=/jkstatus/ source=JkMount type=Exact len=10
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] init_jk::mod_jk.c (3303): Setting default connection pool max size to 1
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_read_property::jk_map.c (482): Adding property 'worker.list' with value 'loadbalancer,status' to map.
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_read_property::jk_map.c (482): Adding property 'worker.node1.port' with value '8009' to map.
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_read_property::jk_map.c (482): Adding property 'worker.node1.host' with value '172.17.8.193' to map.
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_read_property::jk_map.c (482): Adding property 'worker.node1.type' with value 'ajp13' to map.
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_read_property::jk_map.c (482): Adding property 'worker.node1.lbfactor' with value '1' to map.
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_read_property::jk_map.c (482): Adding property 'worker.node2.port' with value '8009' to map.
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_read_property::jk_map.c (482): Adding property 'worker.node2.host' with value '172.17.8.196' to map.
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_read_property::jk_map.c (482): Adding property 'worker.node2.type' with value 'ajp13' to map.
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_read_property::jk_map.c (482): Adding property 'worker.node2.lbfactor' with value '1' to map.
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_read_property::jk_map.c (482): Adding property 'worker.loadbalancer.type' with value 'lb' to map.
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_read_property::jk_map.c (482): Adding property 'worker.loadbalancer.balance_workers' with value 'node1,node2' to map.
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_read_property::jk_map.c (482): Adding property 'worker.loadbalancer.sticky_session' with value '1' to map.
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_read_property::jk_map.c (482): Adding property 'worker.status.type' with value 'status' to map.
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_map_resolve_references::jk_map.c (764): Checking for references with prefix worker. with wildcard (recursion 1)
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_shm_calculate_size::jk_shm.c (129): worker loadbalancer of type lb has 2 members
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [debug] jk_shm_calculate_size::jk_shm.c (136): shared memory will contain 0 ajp workers and 1 lb workers with 2 members
[Tue Jun 18 18:14:00 2013][18778:47687756850032] [error] init_jk::mod_jk.c (3348): Initializing shm:/etc/httpd/logs/jk.shm.18778 errno=13. Load balancing workers will not function properly.

結果,請求沒有被正確地重新路由。

我的worker.properties

# Define list of workers that will be used
# for mapping requests
worker.list=loadbalancer,status

# Define Node1
# modify the host as your host IP or DNS name.
worker.node1.port=8009
worker.node1.host=172.17.8.193 
worker.node1.type=ajp13
worker.node1.lbfactor=1

# Define Node2
# modify the host as your host IP or DNS name.
worker.node2.port=8009
worker.node2.host=172.17.8.196
worker.node2.type=ajp13
worker.node2.lbfactor=1

# Load-balancing behaviour
worker.loadbalancer.type=lb
worker.loadbalancer.balance_workers=node1,node2
worker.loadbalancer.sticky_session=1
#worker.list=loadbalancer

# Status worker for managing load balancer
worker.status.type=status

我的模式-jk.conf

# Load mod_jk module
# Specify the filename of the mod_jk lib
LoadModule jk_module modules/mod_jk.so

# Where to find workers.properties
JkWorkersFile conf/workers.properties

# Where to put jk logs
JkLogFile logs/mod_jk.log

# Set the jk log level [debug/error/info]
JkLogLevel info 

# Select the log format
JkLogStampFormat  "[%a %b %d %H:%M:%S %Y]"

# JkOptions indicates to send SSK KEY SIZE
JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories

# JkRequestLogFormat
JkRequestLogFormat "%w %V %T"
              
# Mount your applications
JkMount /myapp/* loadbalancer


# You can use external file for mount points.
# It will be checked for updates each 60 seconds.
# The format of the file is: /url=worker
# /examples/*=loadbalancer
#JkMountFile conf/uriworkermap.properties               

# Add shared memory.
# This directive is present with 1.2.10 and
# later versions of mod_jk, and is needed for
# for load balancing to work properly
JkShmFile logs/jk.shm 
#JkShmFile /var/log/httpd/mod_jk.shm
            
# Add jkstatus for managing runtime data
<Location /jkstatus/>
   JkMount status
   Order deny,allow
   Deny from all
   Allow from localhost
</Location>

伺服器.xml

<?xml version='1.0' encoding='utf-8'?>
<!--
 Licensed to the Apache Software Foundation (ASF) under one or more
 contributor license agreements.  See the NOTICE file distributed with
 this work for additional information regarding copyright ownership.
 The ASF licenses this file to You under the Apache License, Version 2.0
 (the "License"); you may not use this file except in compliance with
 the License.  You may obtain a copy of the License at

     http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-->
<!-- Note:  A "Server" is not itself a "Container", so you may not
    define subcomponents such as "Valves" at this level.
    Documentation at /docs/config/server.html
-->
<Server port="8005" shutdown="SHUTDOWN">

 <!--APR library loader. Documentation at /docs/apr.html -->
 <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
 <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->
 <Listener className="org.apache.catalina.core.JasperListener" />
 <!-- Prevent memory leaks due to use of particular java/javax APIs-->
 <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
 <!-- JMX Support for the Tomcat server. Documentation at /docs/non-existent.html -->
 <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" />
 <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />

 <!-- Global JNDI resources
      Documentation at /docs/jndi-resources-howto.html
 -->
 <GlobalNamingResources>
   <!-- Editable user database that can also be used by
        UserDatabaseRealm to authenticate users
   -->
   <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>

 <!-- A "Service" is a collection of one or more "Connectors" that share
      a single "Container" Note:  A "Service" is not itself a "Container", 
      so you may not define subcomponents such as "Valves" at this level.
      Documentation at /docs/config/service.html
  -->
 <Service name="Catalina">
 
   <!--The connectors can use a shared executor, you can define one or more named thread pools-->
   <!--
   <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" 
       maxThreads="150" minSpareThreads="4"/>
   -->
   
   
   <!-- A "Connector" represents an endpoint by which requests are received
        and responses are returned. Documentation at :
        Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
        Java AJP  Connector: /docs/config/ajp.html
        APR (HTTP/AJP) Connector: /docs/apr.html
        Define a non-SSL HTTP/1.1 Connector on port 8080
   -->
   <Connector port="8081" protocol="HTTP/1.1" 
              connectionTimeout="20000" 
              redirectPort="8443" />
   <!-- A "Connector" using the shared thread pool-->
   <!--
   <Connector executor="tomcatThreadPool"
              port="8080" protocol="HTTP/1.1" 
              connectionTimeout="20000" 
              redirectPort="8443" />
   -->           
   <!-- Define a SSL HTTP/1.1 Connector on port 8443
        This connector uses the JSSE configuration, when using APR, the 
        connector should be using the OpenSSL style configuration
        described in the APR documentation -->
   <!--
   <Connector port="8443" protocol="HTTP/1.1" SSLEnabled="true"
              maxThreads="150" scheme="https" secure="true"
              clientAuth="false" sslProtocol="TLS" />
   -->

   <!-- Define an AJP 1.3 Connector on port 8009 -->
   <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />


   <!-- An Engine represents the entry point (within Catalina) that processes
        every request.  The Engine implementation for Tomcat stand alone
        analyzes the HTTP headers included with the request, and passes them
        on to the appropriate Host (virtual host).
        Documentation at /docs/config/engine.html -->

   <!-- You should set jvmRoute to support load-balancing via AJP ie :
   <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">         
   --> 
      <Engine name="Catalina" defaultHost="localhost" jvmRoute="node2">

     <!--For clustering, please take a look at documentation at:
         /docs/cluster-howto.html  (simple how to)
         /docs/config/cluster.html (reference documentation) -->
     <!--
     <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
     -->        
     
     <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" channelSendOptions="8">

<Manager className="org.apache.catalina.ha.session.DeltaManager"

expireSessionsOnShutdown="false"

notifyListenersOnReplication="true"/>



<Channel className="org.apache.catalina.tribes.group.GroupChannel">

<Membership className="org.apache.catalina.tribes.membership.McastService"

address="228.0.0.4"

port="45564" frequency="500"

dropTime="3000"/>

<Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">

<Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>

</Sender>

<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"

address="auto" port="4000" autoBind="100"

selectorTimeout="5000" maxThreads="6"/>

<Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>

<Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/>

</Channel>

<Valve className="org.apache.catalina.ha.tcp.ReplicationValve" filter=""/>

<Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>

<ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/>

<ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>

</Cluster>
       

     <!-- The request dumper valve dumps useful debugging information about
          the request and response data received and sent by Tomcat.
          Documentation at: /docs/config/valve.html -->
     <!--
     <Valve className="org.apache.catalina.valves.RequestDumperValve"/>
     -->

     <!-- This Realm uses the UserDatabase configured in the global JNDI
          resources under the key "UserDatabase".  Any edits
          that are performed against this UserDatabase are immediately
          available for use by the Realm.  -->
     <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
            resourceName="UserDatabase"/>

     <!-- Define the default virtual host
          Note: XML Schema validation will not work with Xerces 2.2.
      -->
     <Host name="localhost"  appBase="webapps"
           unpackWARs="true" autoDeploy="true"
           xmlValidation="false" xmlNamespaceAware="false">

       <!-- SingleSignOn valve, share authentication between web applications
            Documentation at: /docs/config/valve.html -->
       <!--
       <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
       -->

       <!-- Access log processes all example.
            Documentation at: /docs/config/valve.html -->
       <!--
       <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"  
              prefix="localhost_access_log." suffix=".txt" pattern="common" resolveHosts="false"/>
       -->

     </Host>
   </Engine>
 </Service>
</Server>

任何回饋將不勝感激。

你用的是selinux嗎?如果你是,你可能想檢查它是否是一個 selinux 上下文問題。

正確答案在網上:

http://www.laliluna.de/articles/2008/09/14/apache_tomcat_mod_jk_selinux.html

您需要的部分在底部附近,如果該頁面消失,我將在此處複製並粘貼:

# mkdir /var/run/mod_jk
# semanage fcontext -a -t httpd_var_run_t "/var/run/mod_jk(/.*)?"

這顯然將 SELinux 配置為允許 mod_jk 工作。無論如何,它對我有用。

引用自:https://serverfault.com/questions/516810