Network Monitoring Manage your business without blowing your budget. Learn how the Calhoun ISD...

Network Monitoring

Manage your business without blowing your budget. Learn how the Calhoun ISD utilizes free “Open Source” tools for real-time monitoring of the entire technology infrastructure - everything from network hardware, server hardware, disk space, core services and applications to phone systems and network bandwidth. In addition, discover how alerts are managed and distributed using multiple mechanisms including e-mail, text messaging, and phone.

*FREE*

Sam LutgringCalhoun Intermediate School District MAEDS 2011

Sam LutgringDirector of Informational Technology ServicesCalhoun Intermediate School District17111 G Drive NorthMarshall, MI [email protected]


What is Network Monitoring?

• Wikipedia - Definition

The term network monitoring describes the use of a system that constantly monitors a computer network for slow or failing components and that notifies the network administrator (via email, pager or other alarms) in case of outages.


Why Should I be Monitoring?

• Predictive Maintenance• Faster Response Time• Simplified Troubleshooting• Record Keeping


What Can I Monitor?

• Anything ….‾ Network Equipment

RoutersSwitches

‾ ServersDisk SpaceServices

‾ Bandwidth

‾ Phone Systems

‾ HVAC


Notifications or Alerts?

• E-mail• Text Messaging• Phone Calls• Handhelds (Smart Phone)• Managing

‾ Time Frames

‾ Groups

‾ Escalation

‾ Rotation


Consolidated Management

CISD Technology Portal


Nagios

• Offers complete monitoring and alerting for servers, switches, applications, and services.

• Runs on Linux and Unix variants• Supports active and passive checks as well as

distributed monitoring and failover• Accessed through a web interface

®

http://www.nagios.org/


Nagios - Monitoring Public Services

• Monitor public services directly from Nagios‾ PING‾ SNMP (Simple Network Management Protocol)

Interface StatusCPU LoadMemory Load

‾ HTTP/s‾ SMTP‾ IMAP/POP‾ DNS‾ FTP‾ Telnet

®


Nagios - Linux Server Monitoring

• NRPE - is a monitoring agent and protocol used to monitor Linux and Unix with Nagios.

• Easily monitor‾ CPU Load

‾ Memory Usage

‾ Swap Usage

‾ Disk Usage

‾ Process State

®


Nagios - Monitoring Windows

• NSClient++ - installed as a Windows service and used to monitor private services ‾ Memory Usage

‾ CPU Usage

‾ Disk Usage

‾ Service States

‾ Running Processes

®


Nagios - Configure Hostdefine host { host_name r1.maeds.org

alias MAEDS Internet Router address 92.168.1.254 parents internet check_command check-host-alive check_interval 5 retry_interval 1 max_check_attempts 5 check_period 24x7 contact_groups maeds-admins notification_interval 30

notification_period 24x7 notification_options d,u,r

}

®


Nagios - Notifications

• E-mail• Text Messaging• Phone Calls• Groups

®


Nagios - Notifications• E-mail

• Text Messaging• Phone Calls• Groups

®



• E-mail• Text Messaging

• Phone Calls• Groups

®



• E-mail• Text Messaging• Phone Calls

‾ Can be used for Status Notifications

‾ Can accept an Acknowledgement

• Groups

®



• E-mail• Text Messaging• Phone Calls• Groups

‾ Assign Contacts to Groups

‾ Assign Groups to a Host

®


Nagios - Configure Contactdefine contact {

contact_name jdoe

alias John Doe

service_notification_period 24x7

host_notification_period 24x7

service_notification_options w,u,c,r

host_notification_options d,u,r

service_notification_commands notify-by-email

host_notification_commands host-notify-by-email

email [email protected]

pager [email protected]

}

®


Nagios - Interface

CISD Nagios Interface

®


NagVis

• A visualization addon for Nagios.• Allows you to “plot” your Nagios Managed nodes

on a custom image file.‾ Vizio Drawing

‾ Picture of Closet

®

http://www.nagvis.org/


NagVis - Interface

CISD Nagios Interface

®


MRTG

• Utilizes SNMP to collect Network Interface Usage Statistics (bandwidth) from routers switches

• Creates and manages historical graphs• Nagiosgraph – Nagios plugin that lets you view

MRTG graphs right in Nagios.

®

http://oss.oetiker.ch/mrtg/


MRTG - Interface

CISD MRTG

®

Network Monitoring Manage your business without blowing your budget. Learn how the Calhoun ISD...

Documents

Transcript of Network Monitoring Manage your business without blowing your budget. Learn how the Calhoun ISD...