sw-collectd-snmp(category14-security-amp-firewalls.html) - phpMan

COLLECTD-SNMP(5)                   collectd                   COLLECTD-SNMP(5)

NAME
       collectd-snmp - Documentation of collectd's "snmp plugin"
SYNOPSIS
         LoadPlugin snmp
         # ...
         <Plugin snmp>
           <Data "powerplus_voltge_input">
             Table false
             Type "voltage"
             TypeInstance "input_line1"
             Scale 0.1
             Values "SNMPv2-SMI::enterprises.6050.5.4.1.1.2.1"
           </Data>
           <Data "hr_users">
             Table false
             Type "users"
             Shift -1
             Values "HOST-RESOURCES-MIB::hrSystemNumUsers.0"
           </Data>
           <Data "std_traffic">
             Table true
             Type "if_octets"
             TypeInstanceOID "IF-MIB::ifDescr"
             #FilterOID "IF-MIB::ifOperStatus"
             #FilterValues "1", "2"
             Values "IF-MIB::ifInOctets" "IF-MIB::ifOutOctets"
           </Data>
           <Data "lancom_stations_total">
               Type "counter"
               PluginInstance "stations_total"
               Table true
               Count true
               Values "SNMPv2-SMI::enterprises.2356.11.1.3.32.1.10" # SNMPv2-SMI::enterprises.lancom-systems.lcos.lcsStatus.lcsStatusWlan.lcsStatusWlanStationTableTable.lcsStatusWlanStationTableEntry.lcsStatusWlanStationTableEntryState
           </Data>
           <Data "lancom_stations_connected">
               Type "counter"
               PluginInstance "stations_connected"
               Table true
               Count true
               Values "SNMPv2-SMI::enterprises.2356.11.1.3.32.1.10" # SNMPv2-SMI::enterprises.lancom-systems.lcos.lcsStatus.lcsStatusWlan.lcsStatusWlanStationTableTable.lcsStatusWlanStationTableEntry.lcsStatusWlanStationTableEntryState
               FilterOID "SNMPv2-SMI::enterprises.2356.11.1.3.32.1.10"
               FilterValues "3" # eConnected
           </Data>
           <Host "some.switch.mydomain.org">
             Address "192.168.0.2"
             Version 1
             Community "community_string"
             Collect "std_traffic"
             Interval 120
             Timeout 10
             Retries 1
           </Host>
           <Host "some.server.mydomain.org">
             Address "192.168.0.42"
             Version 2
             Community "another_string"
             Collect "std_traffic" "hr_users"
           </Host>
           <Host "secure.router.mydomain.org">
             Address "192.168.0.7:165"
             Version 3
             SecurityLevel "authPriv"
             Username "cosmo"
             AuthProtocol "SHA"
             AuthPassphrase "setec_astronomy"
             PrivacyProtocol "AES"
             PrivacyPassphrase "too_many_secrets"
             Collect "std_traffic"
           </Host>
           <Host "some.ups.mydomain.org">
             Address "tcp:192.168.0.3"
             Version 1
             Community "more_communities"
             Collect "powerplus_voltge_input"
             Interval 300
             Timeout 5
             Retries 5
           </Host>
         </Plugin>
DESCRIPTION
       The "snmp plugin" queries other hosts using SNMP, the simple network
       management protocol, and translates the value it receives to collectd's
       internal format and dispatches them. Depending on the write plugins you
       have loaded they may be written to disk or submitted to another
       instance or whatever you configured.
       Because querying a host via SNMP may produce a timeout the "complex
       reads" polling method is used. The ReadThreads parameter in the main
       configuration influences the number of parallel polling jobs which can
       be undertaken. If you expect timeouts or some polling to take a long
       time, you should increase this parameter. Note that other plugins also
       use the same threads.
CONFIGURATION
       Since the aim of the "snmp plugin" is to provide a generic interface to
       SNMP, its configuration is not trivial and may take some time.
       Since the "Net-SNMP" library is used you can use all the environment
       variables that are interpreted by that package. See snmpcmd(1) for more
       details.
       There are two types of blocks that can be contained in the
       "<Plugin snmp>" block: Data and Host:
   The Data block
       The Data block defines a list of values or a table of values that are
       to be queried. The following options can be set:
       Type type
           collectd's type that is to be used, e. g. "if_octets" for interface
           traffic or "users" for a user count. The types are read from the
           TypesDB (see collectd.conf(5)), so you may want to check for which
           types are defined. See types.db(5) for a description of the format
           of this file.
       Table true|false
           Define if this is a single list of values or a table of values. The
           difference is the following:
           When Table is set to false, the OIDs given to Values (see below)
           are queried using the "GET" SNMP command (see snmpget(1)) and
           transmitted to collectd. One value list is dispatched and,
           eventually, one file will be written.
           When Table is set to true, the OIDs given to Values,
           TypeInstanceOID, PluginInstanceOID, HostOID and FilterOID (see
           below) are queried using the "GETNEXT" SNMP command until the
           subtree is left. After all the lists (think: all columns of the
           table) have been read, either (Count set to false) several value
           sets will be dispatched and, eventually, several files will be
           written, or (Count set to true) one single value will be
           dispatched. If you configure a Type (see above) which needs more
           than one data source (for example "if_octets" which needs "rx" and
           "tx") you will need to specify more than one (two, in the example
           case) OIDs with the Values option and can't use the Count option.
           This has nothing to do with the Table setting.
           For example, if you want to query the number of users on a system,
           you can use "HOST-RESOURCES-MIB::hrSystemNumUsers.0". This is one
           value and belongs to one value list, therefore Table must be set to
           false. Please note that, in this case, you have to include the
           sequence number (zero in this case) in the OID.
           Counter example: If you want to query the interface table provided
           by the "IF-MIB", e. g. the bytes transmitted. There are potentially
           many interfaces, so you will want to set Table to true. Because the
           "if_octets" type needs two values, received and transmitted bytes,
           you need to specify two OIDs in the Values setting, in this case
           likely "IF-MIB::ifHCInOctets" and "IF-MIB::ifHCOutOctets". But,
           this is because of the Type setting, not the Table setting.
           Since the semantic of Instance and Values depends on this setting
           you need to set it before setting them. Doing vice versa will
           result in undefined behavior.
       Plugin Plugin
           Use Plugin as the plugin name of the values that are dispatched.
           Defaults to "snmp".
       PluginInstance Instance
           Sets the plugin-instance of the values that are dispatched to
           Instance value.
           When Table is set to true and PluginInstanceOID is set then this
           option has no effect.
           Defaults to an empty string.
       TypeInstance Instance
           Sets the type-instance of the values that are dispatched to
           Instance value.
           When Table is set to true and TypeInstanceOID is set then this
           option has no effect.
           Defaults to an empty string.
       TypeInstanceOID OID
       PluginInstanceOID OID
       HostOID OID
           If Table is set to true, OID is interpreted as an SNMP-prefix that
           will return a list of values. Those values are then used as the
           actual type-instance, plugin-instance or host of dispatched
           metrics. An example would be the "IF-MIB::ifDescr" subtree.
           variables(5) from the SNMP distribution describes the format of
           OIDs. When option is set to empty string, then "SUBID" will be used
           as the value.
           Prefix may be set for values with use of appropriate
           TypeInstancePrefix, PluginInstancePrefix and HostPrefix options.
           When Table is set to false or Count is set to true, these options
           have no effect.
           Defaults: When no one of these options is configured explicitly,
           TypeInstanceOID defaults to an empty string.
       TypeInstancePrefix
       PluginInstancePrefix
       HostPrefix
           These options are intented to be used together with
           TypeInstanceOID, PluginInstanceOID and HostOID respectively.
           If set, String is preprended to values received by querying the
           agent.
           When Table is set to false or Count is set to true, these options
           have no effect.
           The "UPS-MIB" is an example where you need this setting: It has
           voltages of the inlets, outlets and the battery of an UPS. However,
           it doesn't provide a descriptive column for these voltages. In this
           case having 1, 2, ... as instances is not enough, because the inlet
           voltages and outlet voltages may both have the subids 1, 2, ... You
           can use this setting to distinguish between the different voltages.
       Instance Instance
           Attention: this option exists for backwards compatibility only and
           will be removed in next major release. Please use TypeInstance /
           TypeInstanceOID instead.
           The meaning of this setting depends on whether Table is set to true
           or false.
           If Table is set to true, option behaves as TypeInstanceOID.  If
           Table is set to false, option behaves as TypeInstance.
           Note what Table option must be set before setting Instance.
       InstancePrefix String
           Attention: this option exists for backwards compatibility only and
           will be removed in next major release. Please use
           TypeInstancePrefix instead.
       Values OID [OID ...]
           Configures the values to be queried from the SNMP host. The meaning
           slightly changes with the Table setting. variables(5) from the SNMP
           distribution describes the format of OIDs.
           If Table is set to true, each OID must be the prefix of all the
           values to query, e. g. "IF-MIB::ifInOctets" for all the counters of
           incoming traffic. This subtree is walked (using "GETNEXT") until a
           value from outside the subtree is returned.
           If Table is set to false, each OID must be the OID of exactly one
           value, e. g. "IF-MIB::ifInOctets.3" for the third counter of
           incoming traffic.
       Count true|false
           Instead of dispatching one or multiple values per Table entry
           containing the OID(s) given in the Values option, just dispatch a
           single count giving the number of entries that would have been
           dispatched. This is especially useful when combined with the
           filtering options (see below) to count the number of entries in a
           Table matching certain criteria.
           When Table is set to false, this option has no effect.
       Scale Value
           The gauge-values returned by the SNMP-agent are multiplied by
           Value.  This is useful when values are transferred as a fixed point
           real number. For example, thermometers may transfer 243 but
           actually mean 24.3, so you can specify a scale value of 0.1 to
           correct this. The default value is, of course, 1.0.
           This value is not applied to counter-values.
       Shift Value
           Value is added to gauge-values returned by the SNMP-agent after
           they have been multiplied by any Scale value. If, for example, a
           thermometer returns degrees Kelvin you could specify a shift of
           273.15 here to store values in degrees Celsius. The default value
           is, of course, 0.0.
           This value is not applied to counter-values.
       Ignore Value [, Value ...]
           The ignore values allows one to ignore TypeInstances based on their
           name and the patterns specified by the various values you've
           entered. The match is a glob-type shell matching.
           When Table is set to false then this option has no effect.
       InvertMatch true|false(default)
           The invertmatch value should be use in combination of the Ignore
           option.  It changes the behaviour of the Ignore option, from a
           blacklist behaviour when InvertMatch is set to false, to a
           whitelist when specified to true.
       FilterOID OID
       FilterValues Value [, Value ...]
       FilterIgnoreSelected true|false(default)
           When Table is set to true, these options allow to configure
           filtering based on MIB values.
           The FilterOID declares OID to fill table column with values.  The
           FilterValues declares values list to do match. Whether table row
           will be collected or ignored depends on the FilterIgnoreSelected
           setting.  As with other plugins that use the daemon's ignorelist
           functionality, a string that starts and ends with a slash is
           interpreted as a regular expression.
           If no selection is configured at all, all table rows are selected.
           When Table is set to false then these options has no effect.
           See Table and /"IGNORELISTS" for details.
   The Host block
       The Host block defines which hosts to query, which SNMP community and
       version to use and which of the defined Data to query.
       The argument passed to the Host block is used as the hostname in the
       data stored by collectd.
       Address IP-Address|Hostname
           Set the address to connect to. Address may include transport
           specifier and/or port number.
       Version 1|2|3
           Set the SNMP version to use. When giving 2 version "2c" is actually
           used.
       Community Community
           Pass Community to the host. (Ignored for SNMPv3).
       Username Username
           Sets the Username to use for SNMPv3 security.
       SecurityLevel authPriv|authNoPriv|noAuthNoPriv
           Selects the security level for SNMPv3 security.
       Context Context
           Sets the Context for SNMPv3 security.
       AuthProtocol MD5|SHA
           Selects the authentication protocol for SNMPv3 security.
       AuthPassphrase Passphrase
           Sets the authentication passphrase for SNMPv3 security.
       PrivacyProtocol AES|DES
           Selects the privacy (encryption) protocol for SNMPv3 security.
       PrivacyPassphrase Passphrase
           Sets the privacy (encryption) passphrase for SNMPv3 security.
       Collect Data [Data ...]
           Defines which values to collect. Data refers to one of the Data
           block above. Since the config file is read top-down you need to
           define the data before using it here.
       Interval Seconds
           Collect data from this host every Seconds seconds. This option is
           meant for devices with not much CPU power, e. g. network equipment
           such as switches, embedded devices, rack monitoring systems and so
           on. Since the Step of generated RRD files depends on this setting
           it's wise to select a reasonable value once and never change it.
       Timeout Seconds
           How long to wait for a response. The "Net-SNMP" library default is
           1 second.
       Retries Integer
           The number of times that a query should be retried after the
           Timeout expires.  The "Net-SNMP" library default is 5.
       BulkSize Integer
           Configures the size of SNMP bulk transfers. The default is 0, which
           disables bulk transfers altogether.
SEE ALSO
       collectd(1), collectd.conf(5), snmpget(1), snmpgetnext(1),
       variables(5), unix(7)
AUTHORS
       Florian Forster <octo AT collectd.org> Michael Pilat <mike AT mikepilat.com>

5.12.0                            2020-09-03                  COLLECTD-SNMP(5)