tomcat troubleshooting

. There are two situations. One is that the application code is used in some places.System.exitTo exit jvm. Second, the signal sent by the system (kill -9Except that the SIGKILL signal JVM will not have the opportunity to execute shutdownhook) First, the Application Team and the middleware team checked the code.System.exitPossible use in this application. Then there is only the Signal case. After some troubleshooting, we found that the time for the un

Using the unpacked Tomcat package, the command line input service Tomcat start will report the tomcat:unrecognized service error, meaning that the system did not find the service.Well, the problem that we are going to solve now is this error hint, let our decompression install version of Tomcat can also support the Yum installation mode of the service

Tomcat 7最大的改进是对Servlet 3.0和Java EE 6的支持。◆Tomcat 7完全支持Servlet 3.0规范◆Tomcat 7新增了对Java注释的支持◆Tomcat 7通过web.xml动态配置引用类库的功能◆Tomcat 7改进了安全回话的跟踪◆Tomcat 7重构了comet类，将comet类从org.apache.catalina包下移动到org.apache.catalina.comet包下面，这个改动让comet类可以工

Apache System troubleshooting solutions and related operations knowledge1. Check the Apache service on which port is listening, there are several Apache in the service, its initial PID is how muchNetstat-alop |grep LISTEN |grep httpd2. View the location of the current Apache PID file from the configuration fileVi/usr/local/apache/conf/httpd.conf## pidfile:the file in which the server should record its process# identification number when it starts.#Pid

Tomcat: Specifies the JDK version when tomcat is running and the tomcat JDK version. Tomcat, as the web application server for daily development, has brought a lot of convenience for development and testing. tomcat depends on JDK support for running. During JDK installation,

1.tomcat Installation and operationDouble-click Bin/startup.bat in the Tomcat directory, enter http://localhost:8080 after startup, prompt for successful installation, indicating successful installation of TomcatDirectory Structure of 2.tomcat* Bin directory: The startup and termination scripts that hold Tomcat* Startu

: This article mainly introduces how to precisely access tomcat when the tomcat port is not open to the outside when multiple tomcat servers are used for load balancing, if you are interested in the PHP Tutorial, refer. Background: Use Nginx and two Tomcat servers to achieve load balancing, disable

Background: Load balancing was implemented with Nginx and two Tomcat, and Tomcat ports (8080 and 8090) were closed in the firewall, and only 80 ports were opened externally. The Nginx configuration is as follows: Upstream Tomcatcluster { Server : 8080; Server : 8090; } Server { Listen 80; server_name dev.xjj.cn ...... Location/{ ...... Location ~*/ /servlet/{ Include pro

As a medium-sized web site operations engineer, the real experience of the website GG, seeking the ideal troubleshooting steps, their own experience, add Netizen point of viewWebsite hung up,1, ping my website main station IP, may be forbidden Ping, not pass, may be the computer room network problem, then go to ping Room of Gateway!2, Computer room Network If there is no problem, then I will go to see what is the situation, server exception or Nginx e

After multiple tomcat servers are used for load balancing, the tomcat port is not open to the public, so the tomcat server Load balancer can be accessed precisely. Background: Use Nginx and two Tomcat servers to achieve load balancing, disable tomcat ports (8080 and 8090)

How to configure Tomcat in the Eclipse environment Open Eclipse, click on the "Window" menu and select "Preferences" below. Click the "Server" option and select "Runtime Environments" below. Click "Add" to add Tomcat. Click "Next" to select the Tomcat path you have installed. Click "Finish" to finish. Build a Web Application

Tags: mysql databaseMySQL as a common database, in the Internet system applications a lot. Some faults are their own bugs, others are not, examples of problems encountered in the previous period.ProblemThe symptoms that were encountered were this, our application on-line test environment, during the JMeter testing process, it was found that each stress test started with a low access to the previous HTTP request request will time out, and subsequent requests are not in continuous testing. The las

attributes, see Table 22-3. Table 22-3 attributes of the JK plug-in DescriptionLoadModule specifies the loaded JK plug-inJkWorkersFile specifies the job file of the JK plug-in.JkLogFile specifies the log file used by the JK plug-in. In actual configuration, you can view this log file to track the running process of the JK plug-in. This is useful for troubleshooting errors.JkLogLevel specifies the Log Level of the JK plug-in. Optional values include d

Eclipse startup Tomcat may cause the following error to pop up:The main reason is that Tomcat is not configured and the solution is as follows:First step: Windows->preference->server->runtime environment then choose the Tomcat version you installed, then next, choose the Tomcat installation path, FinishThe second step:

Q:eclipse Add Tomcat appears the Apache Tomcat installation at this directory is version 8.5.6. A Tomcat 8.0 installation is expected. A: Open the Tomcat installation directory: Apache-tomcat-8.5.6\lib find Catalina.jar Open org/apache/catalina/util/serverinfo.properties wi

Tomcat modifies the Favicon.ico icon, the Linux tomcat modifies the Favicon.ico icon, and Tomcat changes the Favicon.ico icon>>>>>>>>>>>>>>>>>>>>>>>>>>> >>>>>? Copyright Sweet Potato Yiu March 2, 2017http://www.cnblogs.com/fanshuyao/one, under Windows, put Favicon.ico on the root path of the project ( under the WebApp directory ), and then display the code on the

Reprinted from: http://hellojava.info/?p=517 Alibi Xuan Troubleshooting In addition to the most important solutions and logical derivation capabilities, tools are an integral part of the tool, a good tool can be more effective, even in some cases, because there is no corresponding tool and can not continue to go on, This article is about some of the tools that are commonly used when troubleshooting Java pr

The previous article introduced the online application of one of the troubleshooting: High CPU occupancy, this article mainly analyzes the high memory footprint troubleshooting. Java developers often encounter the following two kinds of exceptions: 1, Java.lang.OutOfMemoryError:PermGen Space 2, Java.lang.OutOfMemoryError:Java heap space To explain these two exceptions in detail, you need to simply revisit t

Tomcat exception: The Tomcat server configuration at \ Servers \ Tomcat v9.0 Server at localhost-c, serverslocalhost-c Today, when I wrote several Java engineering projects using Eclipse java EE and then wrote the jsp page of the java EE Project, Tomcat encountered this exception: Solution: On the menu bar Window

When you create a new project in Eclipse, configure Tomcat, and then test if Tomcat is configured successfully, report a 404 error exception.Workaround:1, remove the project files, re-establish a new project,2, create a new project.3,new a Server, configure Tomcat.4, double-clickPopup Configuration pageSelect the second option in the server locations configuratio