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几个linux集群节点的辅助管理工具

8月 14th, 2008 | 3 Comments | Posted in 新知
集群节点监控: Ganglia

Ganglia is a scalable distributed monitoring system for high-performance computing systems such as clusters and Grids. It is based on a hierarchical design targeted at federations of clusters. Uses multicast and/or unicast to inject xml data into an rrdtool frontend. Makes it very easy to make custom graphs as it was originally written to handle stats data from HPC clusters http://ganglia.sourceforge.net/
SystemImager

节点统一自动安装部署: SystemImager

SystemImager is software which automates Linux installs, software distribution, and production deployment. SystemImager is a part of System Installation Suite. SystemImager makes it easy to do automated installs (clones), software distribution, content or data distribution, configuration changes, and operating system updates to your network of Linux machines. You can even update from one Linux release version to another! It can also be used to ensure safe production deployments. By saving your current production image before updating to your new production image, you have a highly reliable contingency mechanism. If the new production enviroment is found to be flawed, simply roll-back to the last production image with a simple update command! Some typical environments include: Internet server farms, database server farms, high performance clusters, computer labs, and corporate desktop environments. http://systemimager.org

使用subversion集中管理配置文件版本:ubcon

Subcon allows you to store your essential system configuration files in a subversion repository and easily deploy different configurations to machines in a cluster. It also features optional integration with SystemImager, enabling the deployment of system images and configuration in a single step. A flexible configuration file provides the ability to start, stop, or restart services or run arbitrary scripts when a change in a file or set of files is detected. http://code.google.com/p/subcon/

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tomcat性能监控工具 lambda probe

8月 14th, 2008 | 1 Comment | Posted in 新知

lambda probe是一个tomcat性能监控工具，它提供了比tomcat管理控制台更加强大的功能，它自身也是一个web应用，直接部署到tomcat下就可以通过web方式来访问了.

lambda probe提供了非常丰富的功能，下面是它的一些特性：

* Comprehensive JVM memory usage monitor.
* JBoss compatibility
* Display of deployed applications, their status, session count, session object count, context object count, datasource usage etc.
* Start, stop, restart, deploy and updeploy of applications
* Ability to view deployed JSP files
* Ability to compile all or selected JSP files at any time.
* Ability to pre-compile JSP files on application deployment.
* Ability to view auto-generated JSP servlets
* Display of list of sessions for a particular application
* Display of session attributes and their values for a particular application. Ability to remove session attributes.
* Ability to view application context attributes and their values.
* Ability to expire selected sessions
* Graphical display of datasource details including maximum number of connections, number of busy connections and configuration details
* Ability to group datasource properties by URL to help visualizing impact on the databases
* Ability to reset data sources in case of applications leaking connection
* Display of system information including System.properties, memory usage bar and OS details
* Display of JK connector status including the list of requests pending execution
* Real-time connector usage charts and statistics.
* Real-time cluster monitoring and clulster traffic charts
* Real time OS memory usage, swap usage and CPU utilisation monitoring
* Ability to show information about log files and download selected files
* Ability to tail log files in real time from a browser.
* Ability to interrupt execution of “hang” requests without server restart
* Ability to restart Tomcat/JVM via Java Serview Wrapper.
* Availability “Quick check”

网址: http://www.lambdaprobe.org/d/index.htm

在线演示: http://demo.lambdaprobe.org/ 用户名密码为demo/demo 。

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