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SNMP - Cannot find module #4896

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karnamonkster opened this issue Oct 22, 2018 · 18 comments
Closed

SNMP - Cannot find module #4896

karnamonkster opened this issue Oct 22, 2018 · 18 comments

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@karnamonkster
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Relevant telegraf.conf:

# # Retrieves SNMP values from remote agents
 [[inputs.snmp]]
#   agents = [ "127.0.0.1:161" ]
     agents = ["ipdadrres_switch:161"]	
#   ## Timeout for each SNMP query.
   timeout = "5s"
#   ## Number of retries to attempt within timeout.
   retries = 3
#   ## SNMP version, values can be 1, 2, or 3
   version = 3
#
#   ## SNMP community string.
   community = "public"
#
#   ## The GETBULK max-repetitions parameter
   max_repetitions = 10
#
#   ## SNMPv3 auth parameters
   sec_name = "snmpuser"
   auth_protocol = "SHA"      # Values: "MD5", "SHA", ""
   auth_password = "somethingsecret"
   sec_level = "authNoPriv"   # Values: "noAuthNoPriv", "authNoPriv", "authPriv"
##   #context_name = ""
   priv_protocol = "AES"         # Values: "DES", "AES", ""
   priv_password = "somethingsecret"

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

  [[inputs.snmp.field]]
    name = "uptime"
    oid = "DISMAN-EXPRESSION-MIB::sysUpTimeInstance"

  # IF-MIB::ifTable contains counters on input and output traffic as well as errors and discards.
  [[inputs.snmp.table]]
    name = "interface"
    inherit_tags = [ "hostname" ]
    oid = "IF-MIB::ifTable"

    # Interface tag - used to identify interface in metrics database
    [[inputs.snmp.table.field]]
      name = "ifDescr"
      oid = "IF-MIB::ifDescr"
      is_tag = true

  # IF-MIB::ifXTable contains newer High Capacity (HC) counters that do not overflow as fast for a few of the ifTable counters
  [[inputs.snmp.table]]
    name = "interface"
    inherit_tags = [ "hostname" ]
    oid = "IF-MIB::ifXTable"

    # Interface tag - used to identify interface in metrics database
    [[inputs.snmp.table.field]]
      name = "ifDescr"
      oid = "IF-MIB::ifDescr"
      is_tag = true

  # EtherLike-MIB::dot3StatsTable contains detailed ethernet-level information about what kind of errors have been logged on an interface (such as FCS error, frame too long, etc)
  [[inputs.snmp.table]]
    name = "interface"
    inherit_tags = [ "hostname" ]
    oid = "EtherLike-MIB::dot3StatsTable"

    # Interface tag - used to identify interface in metrics database
    [[inputs.snmp.table.field]]
      name = "ifDescr"
      oid = "IF-MIB::ifDescr"
      is_tag = true

System info:

Telegraf : 1.8.1
OS: Centos 7
Activated plugins - vsphere, snmp, system

Steps to reproduce:

  1. ...
  2. ...

Expected behavior:

To be able to get SNMP metrics and pushed to Influx output

Actual behavior:

When running the telegraf test for config, fetches other metrics for System but no SNMP metrics
$telegraf --config /etc/telegraf/telegraf.conf --test
Also when checking the status

$systemctl status telegraf.service -l
: Cannot find module (IPV6-UDP-MIB):At line 0 in (none)
: Cannot find module (IPV6-FORWARD-MIB):At line 0 in (none)
: Cannot find module (NET-SNMP-PASS-MIB):At line 0 in (none)
: Cannot find module (NET-SNMP-EXTEND-MIB):At line 0 in (none)
: Cannot find module (UCD-DLMOD-MIB):At line 0 in (none)
: Cannot find module (SNMP-NOTIFICATION-MIB):At line 0 in (none)
: Cannot find module (IF-MIB):At line 0 in (none)
: IF-MIB::ifTable:Unknown Object Identifier

Additional info:

I also tried doing a snmpwalk, which works perfectly fine for the ip address.
[Include gist of relevant config, logs, etc.]

@danielnelson
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What is the output of this command?

sudo -u telegraf snmptable -Ch -Cl -c public 127.0.0.1 IF-MIB::ifTable

@karnamonkster
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karnamonkster commented Oct 23, 2018

What is the output of this command?

sudo -u telegraf snmptable -Ch -Cl -c public 127.0.0.1 IF-MIB::ifTable
-bash-4.2$ sudo -u telegraf snmptable -Ch -Cl -c public 127.0.0.1 IF-MIB::ifTable

ifIndex ifDescr ifType ifMtu ifSpeed ifPhysAddress ifAdminStatus ifOperStatus ifLastChange ifInOctets ifInUcastPkts ifInNUcastPkts ifInDiscards ifInErrors ifInUnknownProtos ifOutOctets ifOutUcastPkts ifOutNUcastPkts ifOutDiscards ifOutErrors ifOutQLen ifSpecific 
IF-MIB::ifTable: No entries

@akarneliuk
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akarneliuk commented Feb 16, 2019

Hi there,
I have the same problem. Snmpwalk works perfectly fine:

$ snmpwalk -v 3 -l authPriv -u *** -a SHA -A *** -x AES -X *** EOS2 IF-MIB::ifXTable
IF-MIB::ifName.1 = STRING: Ethernet1
IF-MIB::ifName.2 = STRING: Ethernet2
IF-MIB::ifName.3 = STRING: Ethernet3
IF-MIB::ifName.4 = STRING: Ethernet4
IF-MIB::ifName.999001 = STRING: Management1
IF-MIB::ifName.5000000 = STRING: Loopback0
IF-MIB::ifInMulticastPkts.1 = Counter32: 0
IF-MIB::ifInMulticastPkts.2 = Counter32: 1882
IF-MIB::ifInMulticastPkts.3 = Counter32: 26
IF-MIB::ifInMulticastPkts.4 = Counter32: 952
IF-MIB::ifInMulticastPkts.999001 = Counter32: 0
IF-MIB::ifInMulticastPkts.5000000 = Counter32: 0
...

but when I tries to use Telegraf 1.9.4, it can't find the module:

$ sudo docker exec -it 4115348db5d9 telegraf --input-filter snmp --test
2019-02-16T11:13:06Z I! Starting Telegraf 1.9.4
2019-02-16T11:13:06Z I! Using config file: /etc/telegraf/telegraf.conf
2019-02-16T11:13:06Z E! [telegraf] Error running agent: initializing table interface: translating: exit status 2: MIB search path: /root/.snmp/mibs:/usr/share/snmp/mibs:/usr/share/snmp/mibs/iana:/usr/share/snmp/mibs/ietf:/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp
Cannot find module (IF-MIB): At line 0 in (none)
IF-MIB::ifXTable: Unknown Object Identifier

config:

[[inputs.snmp]]
   agents = [ "EOS2:161" ]

   ## SNMPv3 auth parameters
   sec_name = "***"
   auth_protocol = "SHA"      # Values: "MD5", "SHA", ""
   auth_password = "***"
   sec_level = "authPriv"   # Values: "noAuthNoPriv", "authNoPriv", "authPriv"
   #context_name = ""
   priv_protocol = "AES"         # Values: "DES", "AES", ""
   priv_password = "***"

   ## measurement name
   name = "system"
   [[inputs.snmp.field]]
     name = "hostname"
     oid = "SNMPv2-MIB::sysName.0"
     is_tag = true
     [[inputs.snmp.table]]
       name = "interface"
       inherit_tags = [ "hostname" ]
       oid = "IF-MIB::ifXTable"
       [[inputs.snmp.table.field]]
         name = "ifName"
         oid = "IF-MIB::ifName"
         is_tag = true

System:

$ cat /etc/os-release 
NAME="CentOS Linux"
VERSION="7 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="7"
PRETTY_NAME="CentOS Linux 7 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:7"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

$ docker --version
Docker version 18.09.2, build 6247962

@akarneliuk
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Actually I have find a root cause, thanks to @dustnic.
In the host OS I have the respective MIBs:

$ ls /usr/share/snmp/mibs/
AGENTX-MIB.txt                       IANA-RTPROTO-MIB.txt       IPV6-TC.txt                NOTIFICATION-LOG-MIB.txt   SNMP-TARGET-MIB.txt          TUNNEL-MIB.txt
BRIDGE-MIB.txt                       IF-INVERTED-STACK-MIB.txt  IPV6-UDP-MIB.txt           RFC1155-SMI.txt            SNMP-USER-BASED-SM-MIB.txt   UCD-DEMO-MIB.txt
DISMAN-EVENT-MIB.txt                 IF-MIB                     LM-SENSORS-MIB.txt         RFC1213-MIB.txt            SNMP-USM-AES-MIB.txt         UCD-DISKIO-MIB.txt
DISMAN-SCHEDULE-MIB.txt              IF-MIB.txt                 MTA-MIB.txt                RFC-1215.txt               SNMP-USM-DH-OBJECTS-MIB.txt  UCD-DLMOD-MIB.txt
DISMAN-SCRIPT-MIB.txt                INET-ADDRESS-MIB.txt       NET-SNMP-AGENT-MIB.txt     RMON-MIB.txt               SNMPv2-CONF.txt              UCD-IPFWACC-MIB.txt
EtherLike-MIB.txt                    IP-FORWARD-MIB.txt         NET-SNMP-EXAMPLES-MIB.txt  SCTP-MIB.txt               SNMPv2-MIB.txt               UCD-SNMP-MIB.txt
HCNUM-TC.txt                         IP-MIB                     NET-SNMP-EXTEND-MIB.txt    SMUX-MIB.txt               SNMPv2-SMI.txt               UDP-MIB.txt
HOST-RESOURCES-MIB.txt               IP-MIB.txt                 NET-SNMP-MIB.txt           SNMP-COMMUNITY-MIB.txt     SNMPv2-TC.txt
HOST-RESOURCES-TYPES.txt             IPV6-FLOW-LABEL-MIB.txt    NET-SNMP-PASS-MIB.txt      SNMP-FRAMEWORK-MIB.txt     SNMPv2-TM.txt
IANA-ADDRESS-FAMILY-NUMBERS-MIB.txt  IPV6-ICMP-MIB.txt          NET-SNMP-TC.txt            SNMP-MPD-MIB.txt           SNMP-VIEW-BASED-ACM-MIB.txt
IANAifType-MIB.txt                   IPV6-MIB.txt               NET-SNMP-VACM-MIB.txt      SNMP-NOTIFICATION-MIB.txt  TCP-MIB.txt
IANA-LANGUAGE-MIB.txt                IPV6-TCP-MIB.txt           NETWORK-SERVICES-MIB.txt   SNMP-PROXY-MIB.txt         TRANSPORT-ADDRESS-MIB.txt

But the proper one is missing within the container with telegraf:

$ sudo docker exec -it 3a13205d1fd7 ls /usr/share/snmp/mibs/
GNOME-SMI.txt			     NET-SNMP-TC.txt
IANA-ADDRESS-FAMILY-NUMBERS-MIB.txt  NET-SNMP-VACM-MIB.txt
IANA-LANGUAGE-MIB.txt		     RFC-1215.txt
IANA-RTPROTO-MIB.txt		     SNMP-TLS-TM-MIB.txt
IANAifType-MIB.txt		     SNMP-TSM-MIB.txt
LM-SENSORS-MIB.txt		     UCD-DEMO-MIB.txt
NET-SNMP-AGENT-MIB.txt		     UCD-DISKIO-MIB.txt
NET-SNMP-EXAMPLES-MIB.txt	     UCD-DLMOD-MIB.txt
NET-SNMP-EXTEND-MIB.txt		     UCD-IPFILTER-MIB.txt
NET-SNMP-MIB.txt		     UCD-IPFWACC-MIB.txt
NET-SNMP-MONITOR-MIB.txt	     UCD-SNMP-MIB-OLD.txt
NET-SNMP-PASS-MIB.txt		     UCD-SNMP-MIB.txt
NET-SNMP-PERIODIC-NOTIFY-MIB.txt     miblist.txt
NET-SNMP-SYSTEM-MIB.txt

Are there any ideas how to fix that?

@akarneliuk
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Ok, so there is a workaround:
$ sudo docker cp /usr/share/snmp/mibs/. 3fa222f9cab8:/usr/share/snmp/mibs/

Basically I just copy all the MIBs from local host to container (probably, this is vey dirty solution), but afterwards I get snmpwalk from container running:

$ sudo docker exec -it 3fa222f9cab8 snmpwalk -v 3 -u Collector -l authPriv -a SHA -A SUPER_AUTH -x AES -X SUPER_PASS EOS2 IF-MIB::ifXTable
IF-MIB::ifName.1 = STRING: Ethernet1
IF-MIB::ifName.2 = STRING: Ethernet2
IF-MIB::ifName.3 = STRING: Ethernet3
IF-MIB::ifName.4 = STRING: Ethernet4

@akarneliuk
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akarneliuk commented Feb 19, 2019

Unfortunatelly, the workournd turned to be not working, as despite the fact the SNMPWALK from container is working now, the telegraf itself continue to show errors in logs:

$ sudo docker logs 3fa222f9cab8 -f
2019-02-19T06:39:33Z E! [inputs.snmp]: Error in plugin: initializing table interface: translating: exit status 2: MIB search path: /root/.snmp/mibs:/usr/share/snmp/mibs:/usr/share/snmp/mibs/iana:/usr/share/snmp/mibs/ietf:/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp
Cannot find module (IF-MIB): At line 0 in (none)
IF-MIB::ifXTable: Unknown Object Identifier
2019-02-19T06:39:43Z E! [inputs.snmp]: Error in plugin: initializing table interface: translating: exit status 2: MIB search path: /root/.snmp/mibs:/usr/share/snmp/mibs:/usr/share/snmp/mibs/iana:/usr/share/snmp/mibs/ietf:/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp
Cannot find module (IF-MIB): At line 0 in (none)
IF-MIB::ifXTable: Unknown Object Identifier

@danielnelson
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I'm not sure what the cause is, my only guess is that it is permission related. Can you show steps starting from the official telegraf container that allow the error to be reproduced?

@akarneliuk
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Hi @danielnelson, sure, see below, please:

  1. test snmpwalk from Linux host:
$ snmpwalk -v 3 -u Collector -l authPriv -a SHA -A SUPER_AUTH -x AES -X SUPER_PASS EOS2 IF-MIB::ifXTable
IF-MIB::ifName.1 = STRING: Ethernet1
IF-MIB::ifName.2 = STRING: Ethernet2
IF-MIB::ifName.3 = STRING: Ethernet3
IF-MIB::ifName.4 = STRING: Ethernet4
IF-MIB::ifName.999001 = STRING: Management1
...
  1. launch container:
$ sudo docker run -d -p 8125:8125 -p 8092:8092 -p 8094:8094 \
      -v $PWD/data:/var/lib/snmp \
      -v $PWD/telegraf.conf:/etc/telegraf/telegraf.conf:ro \
      --add-host="EOS2:192.168.141.72" \
      telegraf -config /etc/telegraf/telegraf.conf
  1. look for conainer id:
$ sudo docker container ls
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                                                                        NAMES
86c3a0c60a7c        telegraf            "/entrypoint.sh -con…"   2 minutes ago       Up 2 minutes        0.0.0.0:8092->8092/tcp, 8092/udp, 0.0.0.0:8094->8094/tcp, 8125/udp, 0.0.0.0:8125->8125/tcp   adoring_montalcini
  1. check logs within Telegraf container (reports problem):
$ sudo docker logs 86c3a0c60a7c 
2019-02-21T08:04:20Z E! [inputs.snmp]: Error in plugin: initializing table interface: translating: exit status 2: /usr/share/snmp/mibs/IF-MIB.txt: No such file or directory
MIB search path: /root/.snmp/mibs:/usr/share/snmp/mibs:/usr/share/snmp/mibs/iana:/usr/share/snmp/mibs/ietf:/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp
Cannot find module (IF-MIB): At line 0 in (none)
IF-MIB::ifXTable: Unknown Object Identifier
  1. check MIBs within container and find that IF-MIB is missing:
$ sudo docker exec -it 86c3a0c60a7c ls /usr/share/snmp/mibs/
GNOME-SMI.txt			     NET-SNMP-TC.txt
IANA-ADDRESS-FAMILY-NUMBERS-MIB.txt  NET-SNMP-VACM-MIB.txt
IANA-LANGUAGE-MIB.txt		     RFC-1215.txt
IANA-RTPROTO-MIB.txt		     SNMP-TLS-TM-MIB.txt
IANAifType-MIB.txt		     SNMP-TSM-MIB.txt
LM-SENSORS-MIB.txt		     UCD-DEMO-MIB.txt
NET-SNMP-AGENT-MIB.txt		     UCD-DISKIO-MIB.txt
NET-SNMP-EXAMPLES-MIB.txt	     UCD-DLMOD-MIB.txt
NET-SNMP-EXTEND-MIB.txt		     UCD-IPFILTER-MIB.txt
NET-SNMP-MIB.txt		     UCD-IPFWACC-MIB.txt
NET-SNMP-MONITOR-MIB.txt	     UCD-SNMP-MIB-OLD.txt
NET-SNMP-PASS-MIB.txt		     UCD-SNMP-MIB.txt
NET-SNMP-PERIODIC-NOTIFY-MIB.txt     miblist.txt
NET-SNMP-SYSTEM-MIB.txt
  1. upload all MIBs from local host to container:
    $ sudo docker cp /usr/share/snmp/mibs/. 86c3a0c60a7c:/usr/share/snmp/mibs/

  2. check that MIBs are really uploaded:

$ sudo docker exec -it 86c3a0c60a7c ls /usr/share/snmp/mibs/
AGENTX-MIB.txt			     NET-SNMP-VACM-MIB.txt
BRIDGE-MIB.txt			     NETWORK-SERVICES-MIB.txt
DISMAN-EVENT-MIB.txt		     NOTIFICATION-LOG-MIB.txt
DISMAN-SCHEDULE-MIB.txt		     RFC-1215.txt
DISMAN-SCRIPT-MIB.txt		     RFC1155-SMI.txt
EtherLike-MIB.txt		     RFC1213-MIB.txt
GNOME-SMI.txt			     RMON-MIB.txt
HCNUM-TC.txt			     SCTP-MIB.txt
HOST-RESOURCES-MIB.txt		     SMUX-MIB.txt
HOST-RESOURCES-TYPES.txt	     SNMP-COMMUNITY-MIB.txt
IANA-ADDRESS-FAMILY-NUMBERS-MIB.txt  SNMP-FRAMEWORK-MIB.txt
IANA-LANGUAGE-MIB.txt		     SNMP-MPD-MIB.txt
IANA-RTPROTO-MIB.txt		     SNMP-NOTIFICATION-MIB.txt
IANAifType-MIB.txt		     SNMP-PROXY-MIB.txt
IF-INVERTED-STACK-MIB.txt	     SNMP-TARGET-MIB.txt
IF-MIB				     SNMP-TLS-TM-MIB.txt
IF-MIB.txt			     SNMP-TSM-MIB.txt
INET-ADDRESS-MIB.txt		     SNMP-USER-BASED-SM-MIB.txt
IP-FORWARD-MIB.txt		     SNMP-USM-AES-MIB.txt
IP-MIB				     SNMP-USM-DH-OBJECTS-MIB.txt
IP-MIB.txt			     SNMP-VIEW-BASED-ACM-MIB.txt
IPV6-FLOW-LABEL-MIB.txt		     SNMPv2-CONF.txt
IPV6-ICMP-MIB.txt		     SNMPv2-MIB.txt
IPV6-MIB.txt			     SNMPv2-SMI.txt
IPV6-TC.txt			     SNMPv2-TC.txt
IPV6-TCP-MIB.txt		     SNMPv2-TM.txt
IPV6-UDP-MIB.txt		     TCP-MIB.txt
LM-SENSORS-MIB.txt		     TRANSPORT-ADDRESS-MIB.txt
MTA-MIB.txt			     TUNNEL-MIB.txt
NET-SNMP-AGENT-MIB.txt		     UCD-DEMO-MIB.txt
NET-SNMP-EXAMPLES-MIB.txt	     UCD-DISKIO-MIB.txt
NET-SNMP-EXTEND-MIB.txt		     UCD-DLMOD-MIB.txt
NET-SNMP-MIB.txt		     UCD-IPFILTER-MIB.txt
NET-SNMP-MONITOR-MIB.txt	     UCD-IPFWACC-MIB.txt
NET-SNMP-PASS-MIB.txt		     UCD-SNMP-MIB-OLD.txt
NET-SNMP-PERIODIC-NOTIFY-MIB.txt     UCD-SNMP-MIB.txt
NET-SNMP-SYSTEM-MIB.txt		     UDP-MIB.txt
NET-SNMP-TC.txt			     miblist.txt
  1. test snmwalk from container:
$ sudo docker exec -it 86c3a0c60a7c snmpwalk -v 3 -u Collector -l authPriv -a SHA -A SUPER_AUTH -x AES -X SUPER_PASS EOS2 IF-MIB::ifXTable
IF-MIB::ifName.1 = STRING: Ethernet1
IF-MIB::ifName.2 = STRING: Ethernet2
IF-MIB::ifName.3 = STRING: Ethernet3
IF-MIB::ifName.4 = STRING: Ethernet4
...
  1. check logs for Telegraf container again:
$ sudo docker logs 86c3a0c60a7c 
2019-02-21T08:11:10Z E! [inputs.snmp]: Error in plugin: initializing table interface: translating: exit status 2: /usr/share/snmp/mibs/IF-MIB.txt: No such file or directory
MIB search path: /root/.snmp/mibs:/usr/share/snmp/mibs:/usr/share/snmp/mibs/iana:/usr/share/snmp/mibs/ietf:/usr/share/mibs/site:/usr/share/snmp/mibs:/usr/share/mibs/iana:/usr/share/mibs/ietf:/usr/share/mibs/netsnmp
Cannot find module (IF-MIB): At line 0 in (none)
IF-MIB::ifXTable: Unknown Object Identifier

Any ideas?

Thanks and BR,
Anton

@danielnelson
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Presumably you are restarting Telegraf after copying the MIBS over and Telegraf is running as root in the container?

@akarneliuk
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nope, I don't restart telegraf. Despite adding persistent storage the MIBs aren't saved after the restart, hence I would need to copy them back again.

@rutgersmit
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Interesting, I have somewhat the same problem. I get this error: Cannot find module (HOST-RESOURCES-MIB): At line 0 in (none)
In the /usr/share/snmp/mibs/ dir I don't have a HOST-RESOURCES-MIB.txt but I'm not so much into SNMP to judge if this is the cause.
Anyone who can confirm this file should be available to be able to read the HOST-RESOURCES-MIB SNMP data?

@akarneliuk
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Basically you should have in /usr/share/snmp/mibs/ all the files you are trying to poll.

@akarneliuk
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akarneliuk commented Feb 23, 2019

Finally solved by restarting the container:
sudo docker restart 86c3a0c60a7c

After the restart, the telegraf container starts polling the counters properly

@danielnelson
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Closing, since this doesn't appear to be a Telegraf issue.

@zimmertr
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Is it possible to restart Telegraf in the container without killing PID1? Some binaries like nginx support doing this so I thought I would ask.

I'm running the container on Kubernetes, so the MIBs are copied in when the pod (container) is deployed as persistent volumes are not handled the same way in Kubernetes....

@danielnelson
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You can reload Telegraf by sending it a SIGHUP, it will reread the configuration and restart the plugins without exiting.

@nfaction
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I had to install this:

apt install snmp snmp-mibs-downloader

After setting the router's IP, all errors went away and everything started working. Don't forget to entire the router IP in the Dashboard

@msillence
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The 1.14.5-alpine now works fine the 1.14.5 does not work and still suffers from this problem

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