The location of the RRD file. If not specified these are chosen automatically.
See the FILE LOCATIONS topic below. When specified this should be a full path.
[ Optional ]
Settings to control when and how the SNMP source is polled by rrdbotd(8). These settings go under the [poll] heading.
interval The interval (in seconds) at which to retrieve the SNMP values and store them in the RRD file.
[ Required for rrdbotd(8) ]
<field>.source Specifies the SNMP source and OID in a URL format. The <field> above should be replaced with the RRD field name. Multiple xxxxx.source options can be specified if the RRD file has multiple fields. The syntax of the SNMP url is as follows:snmp[version]://community@host[:port]/oid[?query=value]
The following are valid SNMP urls:snmp://firstname.lastname@example.org/sysUptime.0 snmp2c://email@example.com/ifInOctets.2 snmp2c://firstname.lastname@example.org/ifInOctets?idDescr=eth0 snmp://email@example.com:10161/188.8.131.52.184.108.40.206.0 snmp://firstname.lastname@example.org,one.example.com/sysUptime.0
See TABLE QUERIES for more info on how to use the query part. See MULTIPLE HOSTS support for info on how to use multiple hosts.
To test that your SNMP urls are correct you can use the rrdbot-get(1) utility.
[ Required for rrdbotd(8) ]
timeout The timeout (in seconds) to wait for an SNMP response.
These settings are used by the rrdbot-create(8) tool to automatically create RRD files for you. Put these settings under the [create] header.
archive The archives of values you would like to keep in your RRD. There can be multiple archives specified, separated by commas. The syntax of an archive is as follows:<count>/<unit> * <how-many> <units>
The example below describes three archives of "2 per minute for 1 week", "4 per hour for 3 months", "3 per day for 1 year":2/minute * 1 weeks, 4/hour * 3 months, 3/day * 1 year
[ Required for rrdbot-create 8 ]
cf The consolidation functions to use to consolidate RRD values when archiving them. This applies to all fields in the RRD. There can be multiple functions specified, separated by commas. The valid functions are: AVERAGE Average out the values when archiving them. LAST Use the last value in the set to be archived. MAX Use the maximum value in the set to be archived. MIN Use the minimum value in the set to be archived.
[ Default: AVERAGE ]
<field>.max The maximum value for the field. Use the character U to specify that there is no maximum (unbounded).
[ Default: U ]
<field>.min The minimum value for the field. Use the character U to specify that there is no minimum (unbounded).
[ Default: U ]
<field>.type The type of values that will be stored in this field. For more info see the rrdcreate(1) manual. The types are: ABSOLUTE Used for counters that get reset when read. COUNTER For values that increment between reads. DERIVE Used to measure rates of increase or decrease. GAUGE For values that are current, for example the temperature.
[ Default: ABSOLUTE ]
To determine the default location for the configuration files and RRD files run this command:# rrdbotd -V
The configuration files for SNMP pollers are laid out in a directory tree, with one file per RRD. Subdirectories can be used to organize the configuration files. The contents of the configuration files are described in rrdbot.conf(5).
By default the RRD files mirror the directory structure and names of the configuration files, with an .rrd extension appended to the filename.
For example if your configuration files are in a structure like the following:/usr/local/etc/rrdbot/ gateways/ gateway-load.conf gateway-traffic.conf temperature/ inside-temperature.conf outside-temperature.conf machine-load.conf
Then the default RRD files would be in a similar directory structure:/var/db/rrdbot/ gateways/ gateway-load.conf.rrd gateway-traffic.conf.rrd temperature/ inside-temperature.conf.rrd outside-temperature.conf.rrd machine-load.conf.rrd
The default location for an RRD file can be overridden by using the rrd option in the configuration file.
Once you have configuration files in place, you can use the rrdbot-create(8) tool to create the needed RRD files in the appropriate places.
rrdbotd(8) supports failover between multiple agents. If an SNMP query fails on one agent or a value is not found when querying an agent, then it will switch to another configured agent.
When combined with a query (see TABLE QUERIES) you can use this feature to search for a given value in a table on one of multiple agents.
To use failover, simply use multiple host names with commas (without a space) separating them. For example:snmp://email@example.com,one.example.com/sysUptime.0
rrdbotd(8) can query a value that corresponds to a certain row in an SNMP table. On many SNMP agents the indexes of rows in tables are not fixed, and this allows you to retrieve a certain value no matter what row of the table it is on.
Add the OID and value you want to search for in the table to the end of the SNMP URL. Only one query value is supported.
For example to get the outbound packet count on the eth0 interface, you would use:snmp://firstname.lastname@example.org/ifInUcastPkts?ifDescr=eth0
rrdbotd(8), rrdbot-create(8), rrdbot-get(1), rrdtool(1)
.An Stef Walter Aq email@example.com