input.snmp - v3 unknown user name - still creates records with tags as integer

[henriknoerr]

I have issues with telegraf output being sent to influx even when failing snmp credentials. Tags and values are somehow random integers - sorry I don't know the markup codes here to makes this look remotely nice 🥇

snmpwalk -v 3 -u user -a sha -A password -x aes -X password -l AuthPriv ipaddress CHECKPOINT-MIB::fwFrag-fragments -n ctxname_vsid10 snmpwalk: Unknown user name

but the value from telegraf query:
# telegraf --test --config testvs.conf --debug 2020-12-14T12:52:41Z I! Starting Telegraf 1.16.3 2020-12-14T12:52:41Z D! [agent] Initializing plugins 2020-12-14T12:52:41Z D! [agent] Starting service inputs 2020-12-14T12:52:41Z D! [inputs.snmp] executing "snmptranslate" "-Td" "-Ob" "RFC1213-MIB::sysName.0" 2020-12-14T12:52:41Z D! [inputs.snmp] executing "snmptranslate" "-Td" "-Ob" "CHECKPOINT-MIB::fwFrag-fragments.0" snmp,agent_host=agent_ip,host=telegraf_hostname,hostname=1348648 fwFrag-fragments=1348649i 1607950361000000000 2020-12-14T12:52:41Z D! [agent] Stopping service inputs 2020-12-14T12:52:41Z D! [agent] Input channel closed 2020-12-14T12:52:41Z D! [agent] Stopped Successfully snmp,agent_host=agent_ip,host=telegraf_hostname,hostname=915631 fwFrag-fragments=915632i 1607950361000000000

content of testvs.conf
[[inputs.snmp]]
agents = [
"agent_ip",
"agent_ip"
]

timeout = "60s"
interval = "60s"
retries = 3
version = 3

sec_name = "user"
auth_protocol = "sha" # Values: "MD5", "SHA", ""
auth_password = "password"
sec_level = "authPriv" # Values: "noAuthNoPriv", "authNoPriv", "authPriv"
context_name = "ctxname_vsid10"
priv_protocol = "AES" # Values: "DES", "AES", ""
priv_password = "password"

[[inputs.snmp.field]]
name = "hostname"
oid = "RFC1213-MIB::sysName.0"
is_tag = true

[[inputs.snmp.field]]
name = "fwFrag-fragments"
oid = "CHECKPOINT-MIB::fwFrag-fragments.0"

Am I hitting a bug? I have of cource checked that credentials matches in the two outputs, and regardless the hostname should not be an integer

Regards,
Henrik

[henriknoerr]

Telegraf 1.16.3 (git: HEAD c7f2172)

[henriknoerr]

the above issue means that if a user enters wrong credentials to the device / telegraf config the influxdb is still being flooded with millions of unique tags which destroys series

[henriknoerr]

ok - I think someone smarter than me described the issue here: #8242

[Hipska]

Duplicates #7929