Network monitoring typically entails tracking a networkís data traffic in order to identify choke points or to troubleshoot hardware or application problems. Nagios and MRTG are useful, no-cost monitoring tools that run with Linux and can be used to monitor multi-platform environments where UNIX and Microsoft Windows coexist. Progent's IT integration consultants can help you deploy both these tools to tune and troubleshoot your network.
Nagios Monitoring Application
The Nagios network monitoring system is a host and service monitor that runs with Linux or a UNIX variant. The Nagios daemon executes intermittent inspections of hosts and services you specify by means of outside plug-ins which return status information to Nagios. When problems are detected, the Nagios can generate notifications to administrative personnel in a number of ways such as e-mail, instant messaging, or SMS. Current status data, archival records, and analysis reports can be accessed via the web.
Key capabilities of the Nagios monitor include:
- Tracking of system services such as POP3, HTTP, FTP, and NNTP
- Monitoring of host machines: processor load, memory/disk utilization, running processes, etc.
- Ability to define host hierarchy, permitting distinction between hosts that are not running as opposed to ones that are unreachable
- Contact notifications via e-mail, beeper, or other pre-specified means in case service or machine problems are detected or get fixed
- Ability to specify scripts to be run upon the detection of service or machine events for proactive problem remediation
- Support for deploying redundant and distributed monitoring computers
- External command interface that enables on-the-fly edits to be defined for the tracking and notification behavior through the use of event scripts, the web interface, and third-party software
- Preservation of machine and service status across application restarts
- Planned offline periods for eliminating host and service notifications during deliberate outages
- Web applet for viewing existing system status, notification and anomaly archive, log file, etc.
- Authorization protocol that allows you to restrict what customers can view and do from the web applet
MRTG Graphical Traffic Load Monitor
Multi Router Traffic Grapher (MRTG) is a free tool to monitor the traffic load on your network. Running under Windows or Linux, MRTG captures data from the traffic counters of network routers and creates web pages which provide an up-to-date visual depiction of this traffic.
MRTG lets you track the traffic through any SNMP network appliance. This can represent servers, routers, and switches. Administrators can utilize the displayed data to identify system bottlenecks.
Data you can graph with MRTG include:
- Throughput in and out in bits or bytes per second
- Connection rate in connections/sec
- Bandwidth through a particular VIP/virtual server or real server
- Total number of concurrent sessions
Contact Progent for Network Monitoring Consulting
Progentís network monitoring consultants are experienced in using a number of utilities that can help you to troubleshoot or tune your network infrastructure. For network monitoring help, phone Progent at 800-993-9400 or refer to Contact Progent.
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Progent's Microsoft and Cisco certified consultants provide clients in San Francisco, Silicon Valley, and in cities across the United States a wide range of knowledge concerning the fundamental information technology needs common to typical small business environments. Progent's primary services include network integration, Microsoft Exchange help, IT security consulting and Help Desk outsourcing and staffing. Progent's Application Experts Group offers deep expertise in specific application areas. By offering a single source for IT generalists and specialists, Progent is able to deliver speedy, economical and thorough IT solutions that align with the special requirements of your business.