snmp plugin not producing any data

[ayounas]

Bug report

I am using snmp input to query different checkpoint firewall oids and writing them to a tcp socket which is a splunk instance. snmpget returns data but telegraf doesn't return any thing. e.g

[abc@xxxxxx telegraf.d]# snmpget -c public -v2c 10.xxx.xxx.xxx .1.3.6.1.4.1.2620.1.1.25.4.0
SNMPv2-SMI::enterprises.2620.1.1.25.4.0 = INTEGER: 1250140
[abc@xxxxxx telegraf.d]# snmpget -c public -v2c 10.xxx.xxx.xxx .1.3.6.1.4.1.2620.1.1.25.3.0
SNMPv2-SMI::enterprises.2620.1.1.25.3.0 = INTEGER: 129196

I have tried converting to float, int and without conversion but still nothing.

Relevant telegraf.conf:

[global_tags]
dc = "DC1" # will tag all metrics with dc=us-east-1

[agent]
interval = "60s"
round_interval = true
metric_batch_size = 1000
metric_buffer_limit = 10000
collection_jitter = "0s"
flush_interval = "60s"
flush_jitter = "0s"
precision = ""
debug = true
quiet = false
logfile = "/var/log/telegraf/telegraf.log"
hostname = "myhost"
omit_hostname = true

[[outputs.socket_writer]]
address = "tcp://10.xxx.xxx.xxx:2005"
data_format = "json"

[[inputs.snmp]]
agents = [ "10.xx.xx.xx:161" ]
version = 2
timeout = "5s"
retries = 3
community = "public"

[[inputs.snmp.field]]
name = "maxconns"
oid = ".1.3.6.1.4.1.2620.1.1.25.4.0"
conversion = "int"

[[inputs.snmp.field]]
name = "currconns"
oid = ".1.3.6.1.4.1.2620.1.1.25.3.0"
conversion = "int"

[[inputs.snmp.field]]
name = "hmem_failed"
oid = ".1.3.6.1.4.1.2620.1.1.26.1.21.0"

[[inputs.snmp.field]]
name = "kmem_failed"
oid = ".1.3.6.1.4.1.2620.1.1.26.2.15.0"
conversion = "int"

System info:

telegraf version : Telegraf vdev-112-g8bf193d (git: master 8bf193d)
kernel version : 2.6.18-411.0.0.0.1.el5

Steps to reproduce:

no data output by telegraf

telegraf -test -debug -config /etc/telegraf/telegraf.conf -config-directory /etc/telegraf/telegraf.d

• Plugin: inputs.snmp, Collection 1
  [abc@xxxxx telegraf.d]

Expected behavior:

value of the oid.

snmpget -c public -v2c 10.xxx.xxx.xxx .1.3.6.1.4.1.2620.1.1.25.3.0
SNMPv2-SMI::enterprises.2620.1.1.25.3.0 = INTEGER: 129196

Actual behavior:

no data output

Additional info:

I have tried with below version with influxdb as output and still same
Telegraf v1.2.1 (git: release-1.2 3b6ffb3)

[danielnelson]

@phemmer Do you think this is a duplicate of #2590?

[phemmer]

Not likely. Doesn't look like opaque values are in use here. At glance I don't see anything that would cause a problem. The conversion statements are unnecessary, but shouldn't cause problems.

[ayounas]

Yes the conversion statement are unnecessary because expected output is an int. This was just a stab in dark to find if conversion makes any difference.

[phemmer]

Found the issue. PR is over at #2639
However you can work around the issue by just setting the name property. Example:

[[inputs.snmp]]
agents = [ "10.xx.xx.xx:161" ]
version = 2
timeout = "5s"
retries = 3
community = "public"
name = "snmp" # <-- this

[ayounas]

Thanks for the help
snmp plugin is now producing data after adding name= "snmp" as suggested

telegraf -test -debug -config /etc/telegraf/telegraf.conf -config-directory /etc/telegraf/telegraf.d

• Plugin: inputs.snmp, Collection 1

snmp,agent_host=10.xx.xx.xx,dc=DC1,hostname=checkpoint kmem_failed=0i,max_conns=1250140i,curr_conns=118678i,hmem_failed=0i 1491769764000000000