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Add README.md for snmp input plugin
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titilambert committed Mar 2, 2016
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# SNMP Input Plugin

The SNMP input plugin gathers metrics from SNMP agents

### Configuration:

Very Simple Example

```toml
# Very Simple Example
[[inputs.snmp]]

[[inputs.snmp.host]]
address = "127.0.0.1:161"
# SNMP community
community = "public" # default public
# SNMP version (1, 2 or 3)
# Version 3 not supported yet
version = 2 # default 2
# Simple list of OIDs to get, in addition to "collect"
get_oids = [".1.3.6.1.2.1.2.2.1.4.1"]
```

Simple example

```toml
# Simple example
[[inputs.snmp]]
## Use 'oids.txt' file to translate oids to names
## To generate 'oids.txt' you need to run:
## snmptranslate -m all -Tz -On | sed -e 's/"//g' > /tmp/oids.txt
## Or if you have an other MIB folder with custom MIBs
## snmptranslate -M /mycustommibfolder -Tz -On -m all | sed -e 's/"//g' > oids.txt
snmptranslate_file = "/tmp/oids.txt"
[[inputs.snmp.host]]
address = "127.0.0.1:161"
# SNMP community
community = "public" # default public
# SNMP version (1, 2 or 3)
# Version 3 not supported yet
version = 2 # default 2
# Which get/bulk do you want to collect for this host
collect = ["interface_speed", "ifnumber"]

[[inputs.snmp.get]]
name = "interface_speed"
oid = "ifSpeed"
instance = "1"

[[inputs.snmp.get]]
name = "ifnumber"
oid = "ifNumber"
```

Simple bulk example

```toml
# Simple bulk example
[[inputs.snmp]]
## Use 'oids.txt' file to translate oids to names
## To generate 'oids.txt' you need to run:
## snmptranslate -m all -Tz -On | sed -e 's/"//g' > /tmp/oids.txt
## Or if you have an other MIB folder with custom MIBs
## snmptranslate -M /mycustommibfolder -Tz -On -m all | sed -e 's/"//g' > oids.txt
snmptranslate_file = "/tmp/oids.txt"
[[inputs.snmp.host]]
address = "127.0.0.1:161"
# SNMP community
community = "public" # default public
# SNMP version (1, 2 or 3)
# Version 3 not supported yet
version = 2 # default 2
# Which get/bulk do you want to collect for this host
collect = ["interface_speed", "if_number", "if_out_octets"]

[[inputs.snmp.get]]
name = "interface_speed"
oid = "ifSpeed"
instance = "1"

[[inputs.snmp.get]]
name = "if)number"
oid = "ifNumber"

[[inputs.snmp.host.table]]
name = "if_out_octets"
oid = "ifOutOctets"
max_repetition = 4
```

Simple (bulk) table example

```toml
# Simple table example
[[inputs.snmp]]
## Use 'oids.txt' file to translate oids to names
## To generate 'oids.txt' you need to run:
## snmptranslate -m all -Tz -On | sed -e 's/"//g' > /tmp/oids.txt
## Or if you have an other MIB folder with custom MIBs
## snmptranslate -M /mycustommibfolder -Tz -On -m all | sed -e 's/"//g' > oids.txt
snmptranslate_file = "/tmp/oids.txt"
[[inputs.snmp.host]]
address = "127.0.0.1:161"
# SNMP community
community = "public" # default public
# SNMP version (1, 2 or 3)
# Version 3 not supported yet
version = 2 # default 2
# Which get/bulk do you want to collect for this host
collect = ["interface_speed", "if_number", "if_out_octets"]
# Which table do you want to collect
[[inputs.snmp.host.table]]
name = "iftable1"

# table without mapping neither subtables
# This is like bulk request
[[inputs.snmp.table]]
name = "iftable1"
oid = ".1.3.6.1.2.1.31.1.1.1"

[[inputs.snmp.get]]
name = "interface_speed"
oid = "ifSpeed"
instance = "1"

[[inputs.snmp.get]]
name = "if)number"
oid = "ifNumber"

[[inputs.snmp.host.table]]
name = "if_out_octets"
oid = "ifOutOctets"
max_repetition = 4
```

Table with subtable example

```toml
# Simple table with subtable example
[[inputs.snmp]]
## Use 'oids.txt' file to translate oids to names
## To generate 'oids.txt' you need to run:
## snmptranslate -m all -Tz -On | sed -e 's/"//g' > /tmp/oids.txt
## Or if you have an other MIB folder with custom MIBs
## snmptranslate -M /mycustommibfolder -Tz -On -m all | sed -e 's/"//g' > oids.txt
snmptranslate_file = "/tmp/oids.txt"
[[inputs.snmp.host]]
address = "127.0.0.1:161"
# SNMP community
community = "public" # default public
# SNMP version (1, 2 or 3)
# Version 3 not supported yet
version = 2 # default 2
# Which table do you want to collect
[[inputs.snmp.host.table]]
name = "iftable2"

# table without mapping but with subtables
[[inputs.snmp.table]]
name = "iftable2"
oid = ".1.3.6.1.2.1.31.1.1.1"
sub_tables = [".1.3.6.1.2.1.2.2.1.13"]
```

Table with mapping example

```toml
# Simple table with mapping example
[[inputs.snmp]]
## Use 'oids.txt' file to translate oids to names
## To generate 'oids.txt' you need to run:
## snmptranslate -m all -Tz -On | sed -e 's/"//g' > /tmp/oids.txt
## Or if you have an other MIB folder with custom MIBs
## snmptranslate -M /mycustommibfolder -Tz -On -m all | sed -e 's/"//g' > oids.txt
snmptranslate_file = "/tmp/oids.txt"
[[inputs.snmp.host]]
address = "127.0.0.1:161"
# SNMP community
community = "public" # default public
# SNMP version (1, 2 or 3)
# Version 3 not supported yet
version = 2 # default 2
# Which table do you want to collect
[[inputs.snmp.host.table]]
name = "iftable3"
include_instances = ["enp5s0", "eth1"]

# table with mapping but without subtables
[[inputs.snmp.table]]
name = "iftable3"
oid = ".1.3.6.1.2.1.31.1.1.1"
# if empty. get all instances
mapping_table = ".1.3.6.1.2.1.31.1.1.1.1"
# if empty, get all subtables
```

Table with both mapping and subtable example

```toml
# Table with both mapping and subtable example
[[inputs.snmp]]
## Use 'oids.txt' file to translate oids to names
## To generate 'oids.txt' you need to run:
## snmptranslate -m all -Tz -On | sed -e 's/"//g' > /tmp/oids.txt
## Or if you have an other MIB folder with custom MIBs
## snmptranslate -M /mycustommibfolder -Tz -On -m all | sed -e 's/"//g' > oids.txt
snmptranslate_file = "/tmp/oids.txt"
[[inputs.snmp.host]]
address = "127.0.0.1:161"
# SNMP community
community = "public" # default public
# SNMP version (1, 2 or 3)
# Version 3 not supported yet
version = 2 # default 2
# Which table do you want to collect
[[inputs.snmp.host.table]]
name = "iftable4"
include_instances = ["enp5s0", "eth1"]

# table with both mapping and subtables
[[inputs.snmp.table]]
name = "iftable4"
oid = ".1.3.6.1.2.1.31.1.1.1"
# if empty get all instances
mapping_table = ".1.3.6.1.2.1.31.1.1.1.1"
# if empty get all subtables
# sub_tables could be not "real subtables"
sub_tables=[".1.3.6.1.2.1.2.2.1.13", "bytes_recv", "bytes_send"]

# SNMP SUBTABLES
[[plugins.snmp.subtable]]
name = "bytes_recv"
oid = ".1.3.6.1.2.1.31.1.1.1.6"
unit = "octets"

[[plugins.snmp.subtable]]
name = "bytes_send"
oid = ".1.3.6.1.2.1.31.1.1.1.10"
unit = "octets"
```


### Measurements & Fields:

With the last example (Table with both mapping and subtable example):

- ifHCOutOctets
- ifHCOutOctets
- ifInDiscards
- ifInDiscards
- ifHCInOctets
- ifHCInOctets

### Tags:

With the last example (Table with both mapping and subtable example):

- ifHCOutOctets
- host
- instance
- unit
- ifInDiscards
- host
- instance
- ifHCInOctets
- host
- instance
- unit

### Example Output:

With the last example (Table with both mapping and subtable example):

```
ifHCOutOctets,host=127.0.0.1,instance=enp5s0,unit=octets ifHCOutOctets=10565628i 1456878706044462901
ifInDiscards,host=127.0.0.1,instance=enp5s0 ifInDiscards=0i 1456878706044510264
ifHCInOctets,host=127.0.0.1,instance=enp5s0,unit=octets ifHCInOctets=76351777i 1456878706044531312
```

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