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MRTG and RRDTool What they are, how they work

Learn about MRTG and RRDTool which store and display network data, temperature, and server load. Explore how they work, consolidate data, and eliminate old records efficiently.

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MRTG and RRDTool What they are, how they work

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  1. MRTG and RRDTool What they are, how they work Giovanni Albani, Julien Fournel, November 15, 2005

  2. I. Overview of RRDtool

  3. I. Overview of RRDtool Round-Robin Database Tool

  4. I. Overview of RRDtool Round-Robin Database Tool stores and displays data

  5. I. Overview of RRDtool • Round-Robin Database Tool • stores and displays data • such as • network bandwidth • machine-room temperature • server load average

  6. I. Overview of RRDtool • Round-Robin Database Tool • stores and displays data • such as • network bandwidth • machine-room temperature • server load average • allows analyzing the data

  7. II. How does RRDtool work?

  8. II. How does RRDtool work? • Data acquisition

  9. II. How does RRDtool work? • Data acquisition • Fetches data at a constant time interval

  10. II. How does RRDtool work? • Data acquisition • Fetches data at a constant time interval • Stores the new value in a Round-Robin Database (RRD)

  11. II. How does RRDtool work? • Data acquisition • Consolidation

  12. II. How does RRDtool work? • Data acquisition • Consolidation • Define consolidation interval and consolidation function (average, minimum, maximum, total, last)

  13. II. How does RRDtool work? 3. Round Robin Archives

  14. II. How does RRDtool work? 3. Round Robin Archives Stores data values of the same consolidation in a RRA

  15. II. How does RRDtool work? 3. Round Robin Archives Stores data values of the same consolidation in a RRA Advantages : for an amount of time, a constant amount of disk space

  16. II. How does RRDtool work? 1,000 values in 5 minute interval RRA Header Data New values are written to the RRA in round robin manner

  17. II. How does RRDtool work? 3. Round Robin Archives Can define several RRA within a single RRD

  18. II. How does RRDtool work? 3. Round Robin Archives Can define several RRA within a single RRD RRD does not grow over time

  19. II. How does RRDtool work? 3. Round Robin Archives Can define several RRA within a single RRD RRD does not grow over time Old data are automatically eliminated

  20. II. How does RRDtool work? • 3. Round Robin Archives • Can define several RRA within a single RRD • RRD does not grow over time • Old data are automatically eliminated • With consolidation, you can register : • The maximum one minute traffic on the LAN • The total minutes of down times • etc…

  21. II. How does RRDtool work? 4. UNKNOWN value

  22. II. How does RRDtool work? 4. UNKNOWN value If no new data available, RRDTool stores a UNKNOWN value into the database

  23. II. How does RRDtool work? 4. UNKNOWN value If no new data available, RRDTool stores a UNKNOWN value into the database All the functions of RRDTool supports the value UNKNOWN

  24. II. How does RRDtool work? 4. UNKNOWN value If no new data available, RRDTool stores a UNKNOWN value into the database All the functions of RRDTool supports the value UNKNOWN Consolidation check

  25. II. How does RRDtool work? 5. Remote control

  26. II. How does RRDtool work? 5. Remote control For using RRDTool from MRTG

  27. III. Useful function of RRDTool

  28. III. Useful function of RRDTool Create: Set up a new Round Robin Database (RRD)

  29. III. Useful function of RRDTool Create: Set up a new Round Robin Database (RRD) Update: Store new data values into an RRD.

  30. III. Useful function of RRDTool Create: Set up a new Round Robin Database (RRD) Update: Store new data values into an RRD. Graph: Create a graph from data stored in one or several RRDs. Apart from generating graphs, data can also be extracted to stdout.

  31. III. Useful function of RRDTool Create: Set up a new Round Robin Database (RRD) Update: Store new data values into an RRD. Graph: Create a graph from data stored in one or several RRDs. Apart from generating graphs, data can also be extracted to stdout. Fetch: Get data for a certain time period from a RRD. The graph function uses fetch to retrieve its data from an RRD.

  32. I. Overview of the MRTG

  33. I. Overview of the MRTG Multi Router Traffic Grapher

  34. I. Overview of the MRTG Multi Router Traffic Grapher GNU General Public License

  35. I. Overview of the MRTG Multi Router Traffic Grapher GNU General Public License Tobias Oetiker, Dave Rand

  36. I. Overview of the MRTG Multi Router Traffic Grapher GNU General Public License Tobias Oetiker, Dave Rand produces Web pages

  37. I. Overview of the MRTG Multi Router Traffic Grapher GNU General Public License Tobias Oetiker, Dave Rand produces Web pages daily, weekly, monthly, yearly scales

  38. I. Overview of the MRTG Multi Router Traffic Grapher GNU General Public License Tobias Oetiker, Dave Rand produces Web pages daily, weekly, monthly, yearly scales allows diagnosing network problems

  39. I. Overview of the MRTG

  40. II. How does MRTG work?

  41. II. How does MRTG work? Obtain data from the routers, switches...

  42. II. How does MRTG work? Obtain data from the routers, switches... SNMP v1, SNMP v2

  43. II. How does MRTG work? Obtain data from the routers, switches... SNMP v1, SNMP v2 sends SNMP requests every 5 minutes

  44. II. How does MRTG work? Obtain data from the routers, switches... SNMP v1, SNMP v2 sends SNMP requests every 5 minutes Round Robin Database

  45. II. How does MRTG work? Obtain data from the routers, switches... SNMP v1, SNMP v2 sends SNMP requests every 5 minutes Round Robin Database .PNG (Portable Network Graphics)

  46. II. How does MRTG work?

  47. III. What can MRTG be used for?

  48. III. What can MRTG be used for? View the traffic patterns

  49. III. What can MRTG be used for? View the traffic patterns View the history

  50. III. What can MRTG be used for? View the traffic patterns View the history 100Mb/s link, 85Mb/s traffic

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