PUBLIC MARKS with tags linux & monitoring

Glances is a CLI curses based monitoring tool for GNU/Linux and BSD OS.

Monitorix is a free, open source, lightweight system monitoring tool designed to monitorize as many services as possible. At this time it monitors from the CPU load and temperatures to the users using the system. Network devices activity, network services demand and even the devices' interrupt activity are also monitored, and more. The current status of any corporate server with Monitorix installed can be accessed via a web browser.

When tuning a site's performance, a system administrator needs certain tools to measure and monitor how the site is doing under increasing load, as well as identify where bottlenecks may be. Linux system performance monitoring tools On Linux, there are several tools available to you to do this. We describe what we have found as the most helpful in this section.

Opsview is enterprise network and application monitoring software designed for scalability, flexibility and ease of use. Opsview has been in development since 2003 and is released under the GNU GPL license. Current version is 2.12. Opsview is a fully integrated monitoring tool that incorporates popular Open Source software including Nagios, Net-SNMP and RRDtool. The Catalyst web framework provides an extensible monitoring and configuration user interface. Opsview software is supported on Linux (Debian, CentOS, RHEL and Ubuntu) and Solaris 10. It will monitor all common operating systems including Windows. Opsview extends the capabilities of Nagios in the following ways: * Distributed monitoring with high availability and fail-over * Much improved SNMP support with trap processing with rules engine * API supporting automation of Opsview configuration * Data warehouse for storage of historical performance and event data * Opsview Reports customisable reporting * Powerful configuration and management UI * Extended monitoring UI * Extensible architecture based on Catalyst Web Framework and Altinity middleware software

collectd is a small daemon which collects system performance statistics periodically and provides mechanisms to store the values in a variety of ways, for example in RRD-files.

NagVis is a visualization addon for the well known network managment system Nagios. NagVis can be used to visualize Nagios Data, e.g. to display IT processes like a mail system or a network infrastructure. Key features are: * Display of single Hosts and Services * Visualize a complete Host- oder Servicegroup with one icon * Display the state of a Host dependent on the state of its services (“recognize services”) * Display only the real problems (“only_hard_states”) * Define Sub-Map icons wich represent a complete NagVis Map of Hosts/Services/Groups in one icon (drill down) * Visualization/Documentation of complete IT Processes and Infrastructures using self drawn graphics

Nagios is a powerful, modular network monitoring system that can be used to monitor many network services like smtp, http and dns on remote hosts. It also has support for snmp to allow you to check things like processor loads on routers and servers. I couldn't begin to cover all of the things that nagios can do in this article, so I'll just cover the basics to get you up and running.

Cela fait près d’un an et demi que j’utilise le logiciel Cacti pour monitorer l’activité réseau. Aussi bien dans le cadre de mon activité professionnelle que pour mon usage personnel. Mais j’ai récement découvert une alternative sérieuse : Munin. Celui-ci présente de nombreux avantages par rapport à Cacti et mérite d’être plus connue.

Munin the monitoring tool surveys all your computers and remembers what it saw. It presents all the information in graphs through a web interface. Its emphasis is on plug and play capabilities. After completing a installation a high number of monitoring plugins will be playing with no more effort. Using Munin you can easily monitor the performance of your computers, networks, SANs, applications, weather measurements and whatever comes to mind. It makes it easy to determine "what's different today" when a performance problem crops up. It makes it easy to see how you're doing capacity-wise on any resources.

Script PHP établissant une carte du réseau avec les informations de traffic

ctail is like running tail -f, but can be used on multiple files. It uses the Curses library to split the screen into as many windows as there are files to watch. The size of each file's window can optionally be specified on the command line. Regular expressions can be used to display only lines matching (or not matching) arbitrary criteria. Each file's window has a status bar, showing the file name, date and time of last change and current file size.

IPTables log analizer (TODO : find a nice name for it) displays Linux 2.4 iptables logs (rejected, acepted, masqueraded packets...) in a nice HTML page (it support rough netfilter logs but also Shorewall and Suse Firewall logs). This page shall be easy to read and understand to reduce the manual analysis time. This page containts statistics on packets and links to more detailled information on a given host, port, domain and so on.

Firewall Eyes est un outil d'analyse de logs en temps réel pour le pare-feu iptables. Grâce à une interface Web, vous visualisez et supervisez simplement et efficacement l'activité réseau traversant votre firewall. Vous détectez aisément les activités suspectes et ajustez votre politique de sécurité.

This guide shows how to install and configure Smokeping on Debian Etch to monitor network latency. From the Smokeping web site: "SmokePing is a deluxe latency measurement tool. It can measure, store and display latency, latency distribution and packet loss. SmokePing uses RRDtool to maintain a longterm data-store and to draw pretty graphs, giving up to the minute information on the state of each network connection."

vpsinfo is a Linux server monitoring script, written in PHP, that provides web access to system status information. It gathers the output from several common Linux commands into one web page, providing a quick overview of the system's current state.

SNMP (Simple Network Management Protocol) is a protocol for managing networks. Each managed entity in the network will run an snmp server (snmpd) which is going to collect datas from the server such as networking, load, cpu ... Cacti on the other hand is a frontend to the RRDTool with SNMP support. It collects and keep data in a MySQL database and display them through a PHP web frontend.

SNMP (Simple Network Management Protocol) is a protocol for managing networks. Each managed entity in the network will run an snmp server (snmpd) which is going to collect datas from the server such as networking, load, cpu ... Cacti on the other hand is a frontend to the RRDTool with SNMP support. It collects and keep data in a MySQL database and display them through a PHP web frontend.