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projects:telegraph [2018/03/20 22:12] darron [Telegraph (cpu.xml)] |
projects:telegraph [2018/11/16 04:24] |
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| - | ==== Telegraph (SNMP/ | ||
| - | <wrap right> | ||
| - | {{: | ||
| - | </ | ||
| - | Telegraph is a project which will poll an SNMP | ||
| - | server and update an RRD or SQL (SQLite3) database. | ||
| - | |||
| - | A number of external SNMP daemon commands are supplied | ||
| - | to capture values from various probes on a Raspberry or Banana Pi. | ||
| - | |||
| - | An example PHP script demonstrates how to generate RRD | ||
| - | graphs like this one shown here. | ||
| - | |||
| - | === Install === | ||
| - | |||
| - | < | ||
| - | hg clone http:// | ||
| - | cd telegraph | ||
| - | </ | ||
| - | |||
| - | At this time you must read the file named README in the telegraph directory. | ||
| - | This file explains the installation requirements for this software. | ||
| - | |||
| - | Telegraph may be installed once all requirements are met, with | ||
| - | < | ||
| - | make | ||
| - | make install | ||
| - | </ | ||
| - | |||
| - | === SNMPD (snmpd.conf) === | ||
| - | |||
| - | SNMPD is set up to return a value when probed for the CPU temperature on a Raspberry Pi. | ||
| - | |||
| - | < | ||
| - | rocommunity public X.X.X.X/24 | ||
| - | extend cpu / | ||
| - | </ | ||
| - | |||
| - | === Telegraph (cpu.xml) === | ||
| - | |||
| - | This configuration file sets up a query for the above cpu temperature in snmpd.conf. | ||
| - | |||
| - | < | ||
| - | <?xml version=" | ||
| - | < | ||
| - | < | ||
| - | < | ||
| - | < | ||
| - | </ | ||
| - | </ | ||
| - | |||
| - | === CRON === | ||
| - | |||
| - | A CRON job will run every 5 minutes to update the RRD. | ||
| - | < | ||
| - | */5 * * * * / | ||
| - | </ | ||
| - | |||
| - | === World wide web === | ||
| - | |||
| - | Example scripts exist in the demo directory of the project which | ||
| - | demonstrate how the RRD is queried to produce a graph of the values | ||
| - | stored within it. | ||
| - | |||
| - | The demo can be seen [[http:// | ||
