zabbix implements the monitoring of java applications [tomcat] [JMX]

tomcat's official documentation Articles Catalogue Software requirements Knowledge Point Description Tomcat jdk JMX Principle demonstration Experimental environment EXPERIMENTAL DEMONSTRATION Serr2 installation configuration: Serr1 installatio ...

Posted on Wed, 21 Aug 2019 03:01:00 -0700 by freewholly

Lvs+Keepalived+Nginx+Tomcat High Availability Cluster

Project: Lvs+Keepalived+Nginx+Tomcat High Availability ClusterProject Topology:Experimental ideas: Emphasis of the experiment:1. Overview: The keepalived role in this architecture is to make a hot backup of the scheduler in the lvs architecture.There are at least two hot-standby load dispatchers and two web node servers.2. Important: The modul ...

Posted on Tue, 20 Aug 2019 15:15:05 -0700 by ksandom

Tomcat uses thread pools to configure high concurrent connections

1: Configure executor properties Open the / conf/server.xml file and configure a thread pool before Connector: <Executor name="tomcatThreadPool" namePrefix="tomcatThreadPool-" maxThreads="1000" maxIdleTime="300000" minSpareThreads="200"/> Important parameter description:Name: The name o ...

Posted on Wed, 07 Aug 2019 19:28:16 -0700 by MikeUK

1. The Creation of Containers

By quickly building a spring-based web application with idea, we can start with the spring listener in web.xml 1.1 context Creation When tomcat starts a webapp application, it uses multithreading to call the start method of StandardContext, and when StandarContext starts, it calls the listener that im ...

Posted on Sat, 03 Aug 2019 23:57:08 -0700 by acidglitter

TOMCAT (CVE-2017-12615) Remote Code Execution

  Reproductive environment win2003 tomcat/7.0.75 Reproduction process Install jdk and tomcat   Then add the following code to tomcat's configuration file web.xml and restart it <init-param> <param-name>readonly</param-name> ...

Posted on Sun, 28 Jul 2019 22:13:07 -0700 by Joe Haley

Nginx Technology (Software Sharing)

Nginx I. Introduction brief introduction Effect II. The Way of Agency Forward Agency Reverse proxy Difference III. Installation of Nginx Upload [^ 1] Configure installation environment Relevant orders Command Interpretation Compile and install IV. Operating Nginx start-up Stop it Quick st ...

Posted on Wed, 24 Jul 2019 04:46:17 -0700 by Simon Mayer

Web Socket Creates Simple Chat Room

webSocket Some configurations Brief description of information exchange process Need dependence Developing with annotations Establish a connection Realize broadcasting Client delivers information to server Server receives client information Environmental Science: spring4.0 jdk1.8 Some config ...

Posted on Tue, 23 Jul 2019 02:14:42 -0700 by imaprogramur

Jenkins+Java+Maven + Uninterrupted Services + Automated Deployment + Failure Auto-rollback

The introduction and installation of jenkins have been introduced in this article. https://blog.csdn.net/weixin_43112000/article/details/84032214 I won't go into any more details here. I'll serve the dishes directly. Environment Introduction: The company project uses the architecture of 2Nginx+2Tomcat ...

Posted on Mon, 22 Jul 2019 02:37:49 -0700 by crees

Listeners First [Basic concepts, Servlet listeners]

What is a listener A listener is a common java program that implements a specific interface. This program is designed to listen for method calls or property changes of another java object. When these events occur on the listened object, a method of the listener will be executed immediately. Why do we use monitors? The listener can be ...

Posted on Tue, 16 Jul 2019 09:31:00 -0700 by Sianide

Install and configure Tomcat in Linux and deploy web applications (three ways)

System Version: CentOS 6.5 Version; java Version: 1.7 I. Preparations 1. java-version checks if there is a Java environment, and if not, it needs to be installed and configured into environment variables. 2. Download the Tomcat package at http://tomcat.apache.org/download-70.cgi. It can be downloaded locally and uploaded to the server. ...

Posted on Tue, 02 Jul 2019 12:45:35 -0700 by pmeasham