NAME

rddbot-get —

retrieves an SNMP value from an SNMP uri

SYNOPSIS

rddbot-get [-Mnr] [-m mibdir] [-s srcaddr] [-t timeout] snmp://community@host/oid

rddbot-get -V

DESCRIPTION

rddbot-get retrieves an SNMP value from an SNMP URI. The format is the same as is used by rrdbotd(8). You can use rddbot-get for testing SNMP polling while configuring rrdbotd(8).

OPTIONS

The options are as follows.

-m mibdir: The directory in which to look for MIB files. The default directory is usually sufficient.
-M: Display MIB parsing warnings.
-n: Display numeric OIDs.
-r: Recursively walk the SNMP values under the given OID.
-s srcaddr: Source address to send SNMP packets from.
-t timeout: The amount of time (in seconds) to wait for an SNMP response. Defaults to 5 seconds.
-V: Prints the version of rddbot-get and the locations of the configuration files, RRD files etc.

MULTIPLE AGENTS

rddbot-get 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://public@two.example.com,one.example.com/sysUptime.0

TABLE QUERIES

rddbot-get 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://public@example.com/ifInUcastPkts?ifDescr=eth0

AUTHOR

Stefan Walter ⟨stef@memberwebs.com⟩