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An Enterprise-Class Open Source Distributed Monitoring Solution

An Enterprise-Class Open Source Distributed Monitoring Solution
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javamelody - monitoring of JavaEE applications The goal of JavaMelody is to monitor Java or Java EE application servers in QA and production environments. It is not a tool to simulate requests from users, it is a tool to measure and calculate statistics on real operation of an application depending on the usage of the application by users. JavaMelody is opensource (ASL) and production ready: in production in an application of 25 person years. JavaMelody is easy to integrate in most applications and is lightweight (no profiling and no database). JavaMelody is mainly based on statistics of requests and on evolution charts. It allows to improve applications in QA and production and helps to:

Gyrex - Pure OSGi Clustering Administration Any Gyrex based cluster can be administrated using a feature-rich web interface. In addition to the UI, a console is available that can be accessed locally or using SSH. It comes with an extensive set of commands to assist operators. View details » Monitoring RRDtool - About RRDtool What RRDtool does RRDtool is the OpenSource industry standard, high performance data logging and graphing system for time series data. RRDtool can be easily integrated in shell scripts, perl, python, ruby, lua or tcl applications. Core - Nagios Nagios Core is the industry standard, Open Source IT monitoring system that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes. Nagios Core serves as one of the foundation blocks of Nagios XI - our commercial monitoring solution. Nagios Core allows you to monitor your entire IT infrastructure to ensure systems, applications, services, and business processes are functioning properly. In the event of a failure, it can alert technical staff of the problem, allowing them to begin remediation processes before outages affect business processes, end-users, or customers. Nagios Core Overview Nagios Core provides organizations with many benefits, including:

Monitoring Made Easy Hello and welcome to Java-monitor, Java-monitor is the free, on-line monitoring service for Tomcat, Glassfish, JBoss, Jetty and Openfire. We send you an e-mail when you server goes off-line. You can see trends in your JVM memory use, its garbage collectors, your UNIX file descriptors, JVM threads, database connections, Hibernate statistics and much more. From here you can do two things: if you are not sure what Java-monitor is, you can read the information below and look at the live demo to see Java-monitor in action. Once you are confident that Java-monitor is a useful tool, sign up and install Java-monitor on your servers to enjoy the benefits of this free service.

Tutorial: Serve a static website as a Unikernel · rumpkernel/wiki Wiki You will learn how to use the rumprun toolchain to build a unikernel which hosts your very own static site served by Nginx. This page is focused on giving application and web developers the steps and knowledge to get running with a basic Rump Kernel based unikernel. This tutorial assumes you are are on a GNU/Linux or BSD system and familiar with command line basics.

Usemon - Usage monitoring of your Java client or server applications during runtime Usemon is a monitoring system for usage trends, response time and dependency analysis of plain Java applications or big multi-clustered Java Enterprise applications running in production. The proof of Usemon's stability and usefulness is confirmed by the fact that one of the worlds largest telecom operators is running Usemon in a clustered WebSphere environment with over 90 enterprise applications. The Usemon system consists of three separate components: Usemon AgentThe agent performs byte code manipulation of interesting classes, injecting statistics gathering code in all public methods of classes like EJBs, MDBs, SQL statements, Queue senders or configured POJOs for that matter. Data is collected in intervals of 60 seconds and transmitted to the collector for storage into a SQL database.

Getting Started Getting Started will guide you through the process of adding Metrics to an existing application. We’ll go through the various measuring instruments that Metrics provides, how to use them, and when they’ll come in handy. Setting Up Maven Just add the metrics-core library as a dependency: <dependencies><dependency><groupId>com.codahale.metrics</groupId><artifactId>metrics-core</artifactId><version>${metrics.version}</version></dependency></dependencies> Note How We Deploy Python Code Without Git Building, packaging, and deploying Python using versioned artifacts in Debian packages By: Rob McQueen We love Python at Nylas. The syntax is simple and expressive, there are tons of open source modules and frameworks available, and the community is welcoming and diverse.

RHQ (formerly Jopr) I finally got a Raspberry Pi too. After the hurdles of initial installation, got it hooked up to my LAN and of course I had to install an RHQ agent on it. And it turned out that this was dead simple, as the Pi already has Java 1.7 installed (in the Raspbian Wheezy distro that I am using). Following a Select Statement Through Postgres Internals - via @codeship Captain Nemo takes Professor Aronnax on a tourof the engine room, a fascinating descriptionof future technology from an 1870 perspective. This is the third of a series of posts based on a presentation I did at the Barcelona Ruby Conference called “20,000 Leagues Under ActiveRecord.” (posts: onetwo and video). Preparing for this presentation over the Summer, I decided to read through parts of the PostgreSQL C source code.

Setting up a development environment using Docker and Vagrant The first part of this blog post deals with the common flaws of development environments, the setup of a simple Docker environment and the benefits of a Vagrant+Docker configuration. But if you want to just start using Docker with Vagrant jump to the corresponding section. What's wrong with development environments? It can take too long to set it up

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