Question

我在我的机器上运行了2个tomcat实例，在tomcat中的server.xml中有以下条目：

Tomcat 1 ::

<Connector port="8081" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8444" />
    <!-- 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 BIO implementation that requires the JSSE
         style configuration. When using the APR/native implementation, the
         OpenSSL style configuration is required as described in the APR/native
         documentation -->
    <!--
    <Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol"
               maxThrea="150" SSLEnabled="true" scheme="https" secure="true"
               clientAuth="false" sslProtocol="TLS" />
    -->

    <!-- Define an AJP 1.3 Connector on port 8009 -->
    <Connector port="8010" protocol="AJP/1.3" redirectPort="8444" />

Tomcat2：server.xml ::

<Connector port="8080" 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 BIO implementation that requires the JSSE
     style configuration. When using the APR/native implementation, the
     OpenSSL style configuration is required as described in the APR/native
     documentation -->
<!--
<Connector port="8443" protocol="org.apache.coyote.http11.Http11Protocol"
           maxThreads="150" SSLEnabled="true" 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" />

两个tomcat实例都是并行运行的。

现在我在/etc/httpd/httpd.conf文件中引入了以下条目的负载均衡器

 #
    # Load mod_jk
    #
    LoadModule jk_module modules/mod_jk.so
    JkWorkersFile conf/workers.properties
    JkLogFile logs/mod_jk.log
    JkLogLevel info
    JkLogLevel debug
    JkLogLevel warn
    JkLogStampFormat "[%a %b %d %H:%M:%S %Y]"
    JkMount / loadbalancer
    JkMount /* loadbalancer

使用workers.properties文件为::

worker.list=loadbalancer

worker.jvm1.port=8009
worker.jvm1.host=127.0.0.1
worker.jvm1.type=ajp13
worker.jvm1.lbfactor=1
worker.jvm1.max_packet_size=65536
#worker.jvm1.socket_timeout=60
#worker.jvm1.connection_pool_timeout=60

worker.jvm2.port=8010
worker.jvm2.host=127.0.0.1
worker.jvm2.type=ajp13
worker.jvm2.lbfactor=1
worker.jvm2.max_packet_size=65536
#worker.jvm2.socket_timeout=60
#worker.jvm2.connection_pool_timeout=60

worker.loadbalancer.type=lb
worker.loadbalancer.balance_workers=jvm1,jvm2
worker.loadbalancer.sticky_session=0

worker.jvm1.socket_keepalive=1
worker.jvm2.socket_keepalive=1
worker.loadbalancer.method=B

现在重新启动httpd服务，然后重新启动tomcat并执行测试，我发现负载均衡器只是转发重新启动寻求tomcat1而不是tomcat2。我将请求率提高到每秒1000个请求，仍然没有转发到tomcat2。

在worker.properties中，我禁用了jvm1，然后重新启动了httpd和tomcat2。我收到以下错误::

    ==> error_log <==
    [Fri Jul 04 15:44:52 2014] [error] (111)Connection refused: proxy: HTTP: attempt to connect to 127.0.0.1:8080 (paisa-tomcat) failed
    [Fri Jul 04 15:44:52 2014] [error] ap_proxy_connect_backend disabling worker for (paisa-tomcat)

==> error_log <==
[Fri Jul 04 15:44:52 2014] [error] proxy: HTTP: disabled connection for (paisa-tomcat)

==> error_log <==
[Fri Jul 04 15:44:52 2014] [error] proxy: AJP: disabled connection for (paisa-tomcat)

Answer 1

我认为＆＃34; worker.loadbalancer.method = B＆＃34;：

如果设置为B[usyness]，则平衡器将根据工作人员当前服务的请求数来选择当前负载最低的工作人员。此数字除以工人lbfactor，并选择最低值（最不忙）工人。如果您的请求需要很长时间来处理，这种方法特别有趣，例如下载应用程序。

尝试将其设置为＆＃34; N＆＃34;对于循环法，即使用两种不同的浏览器进行测试。

负载均衡器不转发请求到第二个tomcat实例

1 个答案: