Linux服务器tomact 8.0启动慢的完美解决方法
<p><span><strong>环境信息：</strong></span></p>
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CentOS release 6.8</p>
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tomcat-8.0</p>
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JDK1.8</p>
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<span><strong>一、启动tomcat</strong></span></p>
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<code class="bash comments">#sh /root/tomcat-8.0/bin/startup.sh</code>
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<code class="bash comments">#tailf /root/tomcat-8.0/logs/catalina.out</code>
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<code class="bash plain">26-Aug-2017 12:58:31.661 INFO org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector </code><code class="bash keyword">for</code> <code class="bash plain">servlet write</code><code class="bash plain">/read</code>
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<code class="bash plain">26-Aug-2017 12:58:31.662 INFO org.apache.catalina.startup.Catalina.load Initialization processed </code><code class="bash keyword">in</code> <code class="bash plain">680 ms</code>
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<code class="bash plain">26-Aug-2017 12:58:31.685 INFO org.apache.catalina.core.StandardService.startInternal Starting service Catalina</code>
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<code class="bash plain">26-Aug-2017 12:58:31.685 INFO org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat</code><code class="bash plain">/8</code><code class="bash plain">.0.32</code>
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<code class="bash plain">26-Aug-2017 12:58:31.695 INFO org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory </code><code class="bash plain">/root/tomcat-8</code><code class="bash plain">.0</code><code class="bash plain">/webapps/ROOT</code>
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<code class="bash plain">26-Aug-2017 12:58:36.184 INFO org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned </code><code class="bash keyword">for</code> <code class="bash plain">TLDs yet contained no TLDs. Enable debug logging </code><code class="bash keyword">for</code> <code class="bash plain">this logger </code><code class="bash keyword">for</code> <code class="bash plain">a complete list of JARs that were scanned but no TLDs were found </code><code class="bash keyword">in</code> <code class="bash plain">them. Skipping unneeded JARs during scanning can improve startup </code><code class="bash functions">time</code> <code class="bash plain">and JSP compilation </code><code class="bash functions">time</code><code class="bash plain">.</code>
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<code class="bash plain">26-Aug-2017 12:58:37.895 INFO java.util.prefs.FileSystemPreferences$2.run Created system preferences directory </code><code class="bash keyword">in</code> <code class="bash plain">java.home.</code>
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<code class="bash plain">26-Aug-2017 12:58:37.897 INFO java.util.prefs.FileSystemPreferences$1.run Created user preferences directory.</code>
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<code class="bash plain">26-Aug-2017 12:58:37.907 WARNING java.util.prefs.FileSystemPreferences$6.run Prefs </code><code class="bash functions">file</code> <code class="bash plain">removed </code><code class="bash keyword">in</code> <code class="bash plain">background </code><code class="bash plain">/root/</code><code class="bash plain">.java/.userPrefs</code><code class="bash plain">/prefs</code><code class="bash plain">.xml</code>
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<code class="bash plain">26-Aug-2017 12:58:37.908 WARNING java.util.prefs.FileSystemPreferences$6.run Prefs </code><code class="bash functions">file</code> <code class="bash plain">removed </code><code class="bash keyword">in</code> <code class="bash plain">background </code><code class="bash plain">/root/jdk-1</code><code class="bash plain">.8</code><code class="bash plain">/jre/</code><code class="bash plain">.systemPrefs</code><code class="bash plain">/prefs</code><code class="bash plain">.xml</code>
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等待tomcat启动的过程是煎熬的，足足5/6分钟，在不抱希望的情况下它居然又启动完成了......</p>
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<span><strong>有两种解决办法：</strong></span></p>
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1）在Tomcat环境中解决</p>
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在catalina.sh中加入这么一行：</p>
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-Djava.security.egd=file:/dev/./urandom</p>
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例如：</p>
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<code class="bash plain">JAVA_OPTS=</code><code class="bash string">"-server -Xms2048m -Xmx4096m -XX:PermSize=256M -XX:MaxPermSize=512m -Djava.security.egd=file:/dev/./urandom"</code>
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2）在JVM环境中解决</p>
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修改$JAVA_PATH/jre/lib/security/java.security</p>
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<code class="bash plain">securerandom.</code><code class="bash functions">source</code><code class="bash plain">=</code><code class="bash functions">file</code><code class="bash plain">:</code><code class="bash plain">/dev/urandom</code>
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替换成</p>
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<code class="bash plain">securerandom.</code><code class="bash functions">source</code><code class="bash plain">=</code><code class="bash functions">file</code><code class="bash plain">:</code><code class="bash plain">/dev/</code><code class="bash plain">.</code><code class="bash plain">/urandom</code>
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<span><strong>总结</strong></span></p>
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以上所述是小编给大家介绍的Linux服务器tomact 8.0启动慢的完美解决方法，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！</p>
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原文链接：http://www.cnblogs.com/Javame/archive/2017/08/26/7435107.html</p>
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