fix: removed snmptranslate from readme and fix default path (influxda…

…ta#10136)

plugins/inputs/snmp_trap/README.md

@@ -6,21 +6,8 @@ notifications (traps and inform requests).
 Notifications are received on plain UDP. The port to listen is
 configurable.
 
-### Prerequisites
+## Configuration
 
-This plugin uses the `snmptranslate` programs from the
-[net-snmp][] project.  These tools will need to be installed into the `PATH` in
-order to be located.  Other utilities from the net-snmp project may be useful
-for troubleshooting, but are not directly used by the plugin.
-
-These programs will load available MIBs on the system.  Typically the default
-directory for MIBs is `/usr/share/snmp/mibs`, but if your MIBs are in a
-different location you may need to make the paths known to net-snmp.  The
-location of these files can be configured in the `snmp.conf` or via the
-`MIBDIRS` environment variable. See [`man 1 snmpcmd`][man snmpcmd] for more
-information.
-
-### Configuration
 ```toml
 [[inputs.snmp_trap]]
   ## Transport, local address, and port to listen on.  Transport must
@@ -55,7 +42,7 @@ information.
   # priv_password = ""
 ```
 
-#### Using a Privileged Port
+### Using a Privileged Port
 
 On many operating systems, listening on a privileged port (a port
 number less than 1024) requires extra permission.  Since the default
@@ -73,7 +60,7 @@ the privileged port.
 To use a privileged port on Linux, you can use setcap to enable the
 CAP_NET_BIND_SERVICE capability on the telegraf binary:
 
-```
+```shell
 setcap cap_net_bind_service=+ep /usr/bin/telegraf
 ```
 
@@ -84,21 +71,22 @@ On Mac OS, listening on privileged ports is unrestricted on versions
 
 - snmp_trap
   - tags:
-	- source (string, IP address of trap source)
-	- name (string, value from SNMPv2-MIB::snmpTrapOID.0 PDU)
-	- mib (string, MIB from SNMPv2-MIB::snmpTrapOID.0 PDU)
-	- oid (string, OID string from SNMPv2-MIB::snmpTrapOID.0 PDU)
-	- version (string, "1" or "2c" or "3")
-	- context_name (string, value from v3 trap)
-	- engine_id (string, value from v3 trap)
-	- community (string, value from 1 or 2c trap)
+    - source (string, IP address of trap source)
+    - name (string, value from SNMPv2-MIB::snmpTrapOID.0 PDU)
+    - mib (string, MIB from SNMPv2-MIB::snmpTrapOID.0 PDU)
+    - oid (string, OID string from SNMPv2-MIB::snmpTrapOID.0 PDU)
+    - version (string, "1" or "2c" or "3")
+    - context_name (string, value from v3 trap)
+    - engine_id (string, value from v3 trap)
+    - community (string, value from 1 or 2c trap)
   - fields:
-	- Fields are mapped from variables in the trap. Field names are
+    - Fields are mapped from variables in the trap. Field names are
       the trap variable names after MIB lookup. Field values are trap
       variable values.
 
 ### Example Output
-```
+
+```shell
 snmp_trap,mib=SNMPv2-MIB,name=coldStart,oid=.1.3.6.1.6.3.1.1.5.1,source=192.168.122.102,version=2c,community=public snmpTrapEnterprise.0="linux",sysUpTimeInstance=1i 1574109187723429814
 snmp_trap,mib=NET-SNMP-AGENT-MIB,name=nsNotifyShutdown,oid=.1.3.6.1.4.1.8072.4.0.2,source=192.168.122.102,version=2c,community=public sysUpTimeInstance=5803i,snmpTrapEnterprise.0="netSnmpNotificationPrefix" 1574109186555115459
 ```

plugins/inputs/snmp_trap/snmp_trap.go

@@ -105,6 +105,7 @@ func init() {
 			lookupFunc:     lookup,
 			ServiceAddress: "udp://:162",
 			Timeout:        defaultTimeout,
+			Path:           []string{"/usr/share/snmp/mibs"},
 			Version:        "2c",
 		}
 	})