Network monitoring conventionally entails observing a network’s data traffic in order to determine choke points or to analyze hardware or application problems. Nagios and MRTG are useful, Open Source monitoring tools that operate under Linux and can be helpful to monitor mixed-platform environments where UNIX and MS Windows coexist. Progent's IT integration engineers can help you use each of these tools to tune and troubleshoot your infrastructure.
Nagios Open Source Monitoring Application
The Nagios Open Source monitoring system is a host and service monitor that runs with Linux or a UNIX variant. The monitoring daemon runs intermittent inspections of hosts and services you request by means of external plug-ins which return status data to Nagios. When problems are detected, the daemon can generate alerts to support contacts in a variety of ways such as e-mail, IM, or SMS. Current status data, archival logs, and reports can be examined via a standard web browser.
Major capabilities of the Nagios monitor include:
- Tracking of network services such as SMTP, HTTP, FTP, and NNTP
- Monitoring of host resources: CPU load, memory/disk usage, log files, etc.
- Ability to specify host hierarchy, permitting differentiation between hosts that are down vs. hosts that are unreachable
- Contact notifications via email, beeper, or other user-defined method in case service or machine problems are detected or are resolved
- Option to define scripts to be run during service or machine events for automated problem resolution
- Accommodation for implementing backup and dispersed monitoring servers
- External command interface that allows ad hoc modifications to be defined for the monitoring and notification activity through the use of event scripts, the web interface, and independent software
- Retention of machine and service status across program restarts
- Planned downtime for eliminating host and service notifications during deliberate outages
- Browser interface for examining existing network state, alert and problem history, log file, etc.
- Permissions scheme that enables you to limit what users can view and modify from the web applet
MRTG Graphical Traffic Load Monitor
MRTG Graphical Traffic Load Monitor is an Open Source tool to track the bandwidth utilization on your network. Powered by MS Windows or Linux, MRTG reads the traffic counters of routers and produces web pages which offer a live intuitive depiction of this data.
MRTG allows you to graph the traffic in and out of any SNMP network appliance. This includes servers, routers, and switches. Administrators can use the displayed information to determine network bottlenecks.
Type of information you are able to graph using MRTG include:
- Bandwidth in bits or bytes/sec
- Connection rate in connections/sec
- Throughput in an out of a specific VIP server or real server
- Total number of concurrent sessions
Ask Progent about Network Monitoring Help
Progent’s network monitoring consultants are skilled in using a number of network monitoring tools that can assist you to repair or tune your connectivity infrastructure. To get network monitoring expertise, call Progent at 800-993-9400 or visit Contact Progent.
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