Network monitoring typically consists of observing a system's data traffic in order to identify areas of congestion or to troubleshoot equipment or application issues. Nagios and MRTG are powerful, Open Source monitoring utilities that run under Linux and can be helpful to monitor mixed-platform networks where UNIX family systems and Windows both operate. Progent's system integration experts can show you how to use both these utilities to tune and troubleshoot your infrastructure.
Nagios Monitoring System
The Nagios monitoring system is a host and service monitor that operates with Linux. The monitoring daemon executes periodic inspections of hosts and services you specify using outside add-ons which return status information to Nagios. When issues are detected, the daemon can generate notifications to support personnel in a variety of ways such as email, instant messaging, or Short Message Service. Current status data, archival logs, and analysis reports can be examined using a standard web browser.
Major features of the Nagios monitor include:
- Monitoring of network services such as SMTP, HTTP, FTP, and PING
- Monitoring of host resources: CPU load, disk and memory utilization, running processes, etc.
- Ability to specify network host hierarchy, permitting distinction between machines that are down vs. hosts that are unreachable
- Contact notifications by e-mail, pager, or other pre-defined method in case service or host problems are detected or get fixed
- Option to specify scripts to be run upon the detection of service or machine events for proactive problem remediation
- Accommodation for deploying backup and distributed monitoring servers
- External command interface that enables ad hoc edits to be made to the tracking and alerting activity via the use of event scripts, the web interface, and third-party applications
- Retention of host and service state after application restarts
- Planned downtime for eliminating machine and service notifications during deliberate service breaks
- Web applet for examining current network status, alert and problem history, event logs, etc.
- Permissions scheme that enables you to restrict what customers can view and modify via the browser applet
MRTG Graphical Traffic Load Monitor
MRTG is an Open Source tool to monitor the bandwidth utilization on your network. Running under MS Windows or Linux and most UNIX platforms, MRTG reads the traffic counters of network routers and generates web-accessible graphs which provide an up-to-date visual representation of this traffic.
Multi Router Traffic Grapher allows you to graph the traffic through any SNMP network appliance. This includes processors, routers, and switches. You can use the resulting data to identify system trouble spots.
Type of information you are able to graph with MRTG include:
- Bandwidth in and out in bits or bytes/sec
- Connection rate in connections per second
- Throughput in an out of a particular Virtual server or real server
- Number of concurrent sessions
Contact Progent about Network Monitoring Consulting
Progentís network monitoring specialists are experienced in using a number of utilities that can help you to troubleshoot or optimize your connectivity infrastructure. For network monitoring assistance, call Progent at 800-993-9400 or visit Contact Progent.
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Progent's Microsoft and Cisco authorized consultants offer businesses in the , Silicon Valley, and in cities across the United States a wide range of expertise concerning the fundamental IT requirements shared by most small business networks. Progent's primary consulting areas include system integration, MS Exchange help, network security consulting and HelpDesk outsourcing and support. Progent's Application Experts Team offers deep knowledge of specific application topics. By providing a one-stop source for IT generalists and specialists, Progent can deliver quick, affordable and comprehensive network solutions that fit the specific requirements of your business.