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Passive Monitoring Solutions
            For
     Remote Networks
          Scott Wilkerson

         swilkerson@nagios.com
Topics


   Difficulties with Remote Networks
   Firewall Challenges
   Types of Monitoring Active vs. Passive
   Possible Solutions
         Nagios Remote Data Sender (NRDS)
         Nagios Reflector
   Q & A / Discussion



                            ๒๐๑๒            ๒
Difficulties with Remote Networks


   Active Checks
        Need Access through Firewall
             Port forwarding
             Multiple levels of NAT/firewall to go through
             What port goes to which system?
             What about Laptops with Dynamic IP?
   Passive Checks
        Every monitoring change requires updating
         config and plugin on each machine monitored
        Nagios server need to be reachable from
         remote system
                           ๒๐๑๒                              ๓
Pitfalls with Remote Networks




                                Nagios
                                Server




                      ๒๐๑๒               ๔
Unlocking The Power of
Passive Monitoring With
        NRDS
What the heck is NRDS?




       Nagios
       Remote
       Data
       Sender

                     2012   6
Key Benefits of NRDS

   Central Configuration
        Deploy once
        Automatic updates
   Plugin Deployment
        All plugins on one server
   Shared Configurations
        Change config, deploy to all
        Including needed plugins!
   Multiple Platforms and Architecture

                           2012          7
How do(es) NRDS work?
What Makes NRDS tick?
 Primarily Nagios XI
      NRDP (NRDS adds on to NRDP)
      NRDS Config Manager Component
      Plugin Cache in /usr/local/nrdp/plugins
      Easy Addition Using XI's Unconfigured Objects
 Could be used with Core
      Still need NRDP
      Need to modify configs manually
 Client-side
      Cron/Scheduled Tasks
      *nix/Mac OS/X version use bash & curl/wget
                          2012                        9
Nagios Conference 2012 - Scott Wilkerson - Passive Monitoring Solutions For Remote Networks
Pros & Cons of Passive Checks

   Advantages
        No Need to Open Firewalls to Clients
        Reduce Nagios Server Load
        Central Config Management
        Central Plugin Management
        Easy setup, no compiling on every server
   Disadvantages
        Nagios doesn't control when checks happen
        Some plugins have pre-reqs
        Nagios server needs to be accessible from
         remote system

                           2012                     11
Pros & Cons of Passive Checks

   NRDS Links
        Pre-installed in Nagios XI 2012
        Component Download
        Passive Monitoring with NRDS Documentation
        Tutorial




                           2012                      12
Using the New
Nagios Reflector
   to Monitor
Remote Machines
What is the Nagios Reflector?
 Just Released
 Nagios Enterprise Hosted Results
       Clients send data to Reflector
       Nagios server Utilizes new
        check_reflector.py plugin
        to collect results via SSL HTTP
 Useful for Core and Nagios XI
       Can accept NRDP or NSCA data
       Zero Firewall setup, all connections outbound
 Conference attendees are the first people
 allowed access to Nagios Reflector
                           2012                        14
Slide Title




              2012   15
Pros & Cons of Nagios Reflector

   Advantages
        No Need to Open Firewalls (either)
        Reduce Nagios Server Load
        Works with dynamic IP assignments
        Can pull data to multiple Nagios Servers
        Integration with NRDS (Roadmap)
   Disadvantages
        Nagios doesn't control when checks happen
        Clients & Nagios need Internet Access
        Some data is sent to remote network


                           2012                     16
Pros & Cons of Nagios Reflector

   Reflector Links
         https://reflector.nagios.com
         Using Nagios Reflector with Nagios XI
         Using Nagios Reflector with Nagios Core
         Nagios XI Reflector Wizard
         Reflector Plugin




                             2012                  17
Contact Us

  Hours of operation: 9am - 5pm CST, Monday – Friday
  Phone: U.S.: 1-888-624-4671 ♦ International: +1-651-204-9102
  Fax: U.S.: 651-204-9103 ♦ International: +1-651-204-9103
  Email: sales@nagios.com
  Mail: Nagios Enterprises, LLC
             P.O. Box 8154
             Saint Paul, MN 55108
  Websites:
     http://www.nagios.com/
     http://www.nagios.org/
     http://exchange.nagios.org/
     http://labs.nagios.com/



                                    2012                         18
Thank You!




                Thank you!
                     Additional Questions?
   http://support.nagios.com/forum/viewtopic.php?f=24&t=7484




                              2012                             19

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Nagios Conference 2012 - Scott Wilkerson - Passive Monitoring Solutions For Remote Networks

  • 1. Passive Monitoring Solutions For Remote Networks Scott Wilkerson swilkerson@nagios.com
  • 2. Topics Difficulties with Remote Networks Firewall Challenges Types of Monitoring Active vs. Passive Possible Solutions Nagios Remote Data Sender (NRDS) Nagios Reflector Q & A / Discussion ๒๐๑๒ ๒
  • 3. Difficulties with Remote Networks Active Checks Need Access through Firewall Port forwarding Multiple levels of NAT/firewall to go through What port goes to which system? What about Laptops with Dynamic IP? Passive Checks Every monitoring change requires updating config and plugin on each machine monitored Nagios server need to be reachable from remote system ๒๐๑๒ ๓
  • 4. Pitfalls with Remote Networks Nagios Server ๒๐๑๒ ๔
  • 5. Unlocking The Power of Passive Monitoring With NRDS
  • 6. What the heck is NRDS? Nagios Remote Data Sender 2012 6
  • 7. Key Benefits of NRDS Central Configuration Deploy once Automatic updates Plugin Deployment All plugins on one server Shared Configurations Change config, deploy to all Including needed plugins! Multiple Platforms and Architecture 2012 7
  • 9. What Makes NRDS tick? Primarily Nagios XI NRDP (NRDS adds on to NRDP) NRDS Config Manager Component Plugin Cache in /usr/local/nrdp/plugins Easy Addition Using XI's Unconfigured Objects Could be used with Core Still need NRDP Need to modify configs manually Client-side Cron/Scheduled Tasks *nix/Mac OS/X version use bash & curl/wget 2012 9
  • 11. Pros & Cons of Passive Checks Advantages No Need to Open Firewalls to Clients Reduce Nagios Server Load Central Config Management Central Plugin Management Easy setup, no compiling on every server Disadvantages Nagios doesn't control when checks happen Some plugins have pre-reqs Nagios server needs to be accessible from remote system 2012 11
  • 12. Pros & Cons of Passive Checks NRDS Links Pre-installed in Nagios XI 2012 Component Download Passive Monitoring with NRDS Documentation Tutorial 2012 12
  • 13. Using the New Nagios Reflector to Monitor Remote Machines
  • 14. What is the Nagios Reflector? Just Released Nagios Enterprise Hosted Results Clients send data to Reflector Nagios server Utilizes new check_reflector.py plugin to collect results via SSL HTTP Useful for Core and Nagios XI Can accept NRDP or NSCA data Zero Firewall setup, all connections outbound Conference attendees are the first people allowed access to Nagios Reflector 2012 14
  • 15. Slide Title 2012 15
  • 16. Pros & Cons of Nagios Reflector Advantages No Need to Open Firewalls (either) Reduce Nagios Server Load Works with dynamic IP assignments Can pull data to multiple Nagios Servers Integration with NRDS (Roadmap) Disadvantages Nagios doesn't control when checks happen Clients & Nagios need Internet Access Some data is sent to remote network 2012 16
  • 17. Pros & Cons of Nagios Reflector Reflector Links https://reflector.nagios.com Using Nagios Reflector with Nagios XI Using Nagios Reflector with Nagios Core Nagios XI Reflector Wizard Reflector Plugin 2012 17
  • 18. Contact Us Hours of operation: 9am - 5pm CST, Monday – Friday Phone: U.S.: 1-888-624-4671 ♦ International: +1-651-204-9102 Fax: U.S.: 651-204-9103 ♦ International: +1-651-204-9103 Email: sales@nagios.com Mail: Nagios Enterprises, LLC P.O. Box 8154 Saint Paul, MN 55108 Websites: http://www.nagios.com/ http://www.nagios.org/ http://exchange.nagios.org/ http://labs.nagios.com/ 2012 18
  • 19. Thank You! Thank you! Additional Questions? http://support.nagios.com/forum/viewtopic.php?f=24&t=7484 2012 19