How convert OCTET STRING to FLOAT?

[konst...@mironovs.com]

Hello.

I have OCTET STRING OID's like this:

rptPaTemprature OBJECT-TYPE
    SYNTAX  OCTET STRING(SIZE(4))
    MAX-ACCESS read-only
    STATUS  mandatory
    DESCRIPTION
        "The temperature.
         It should be changed to float format.
         The value is invalid, if the repeater is rd960."
    -- 1.3.6.1.4.1.40297.1.2.1.2.2
    ::= { rptDataInfo 2 }

How I can collect this OID to Prometheus?

# snmpwalk -v 1 -c public -m HYTERA-REPEATER-MIB 192.168.88.190 HYTERA-REPEATER-MIB::rptPaTemprature.0
HYTERA-REPEATER-MIB::rptPaTemprature.0 = Hex-STRING: 00 00 C0 41

[Ben Kochie]

That looks like it needs to be converted to a 32-bit float.

generator.yml:

modules:

  hytera:

    walk:

    - rptPaTemprature

    overrides:

      rptPaTemprature:

        type: Float

snmp.yml:

hytera:

  get:

  - 1.3.6.1.4.1.40297.1.2.1.2.2.0

  metrics:

  - name: rptPaTemprature

    oid: 1.3.6.1.4.1.40297.1.2.1.2.2

    type: Float

    help: The temperature - 1.3.6.1.4.1.40297.1.2.1.2.2

--
You received this message because you are subscribed to the Google Groups "Prometheus Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to prometheus-use...@googlegroups.com.
To post to this group, send email to promethe...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/2d222ff7-387d-44e5-9737-5ccd23bf0306%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[konst...@mironovs.com]

Thank you!

I can make snmp.conf without snmp-generator? Place to snmp.conf this:

hytera:

  get:

  - 1.3.6.1.4.1.40297.1.2.1.2.2.0

  metrics:

  - name: rptPaTemprature

    oid: 1.3.6.1.4.1.40297.1.2.1.2.2

    type: Float

    help: The temperature - 1.3.6.1.4.1.40297.1.2.1.2.2

воскресенье, 11 ноября 2018 г., 0:07:03 UTC+3 пользователь konst...@mironovs.com написал:

[konst...@mironovs.com]

I try make config:

hytera:

  version: 1

  auth:

    community: public

  get:

  - 1.3.6.1.4.1.40297.1.2.1.2.2.0

  metrics:

  - name: rptPaTemprature

    oid: 1.3.6.1.4.1.40297.1.2.1.2.2

    type: Float

    help: The temperature - 1.3.6.1.4.1.40297.1.2.1.2.2

But can't take right temperature:

http://192.168.88.2:9116/snmp?module=hytera&target=192.168.88.190

# HELP rptPaTemprature The temperature - 1.3.6.1.4.1.40297.1.2.1.2.2
# TYPE rptPaTemprature gauge
rptPaTemprature 0
# HELP snmp_scrape_duration_seconds Total SNMP time scrape took (walk and processing).
# TYPE snmp_scrape_duration_seconds gauge
snmp_scrape_duration_seconds 0.005580182
# HELP snmp_scrape_pdus_returned PDUs returned from walk.
# TYPE snmp_scrape_pdus_returned gauge
snmp_scrape_pdus_returned 1
# HELP snmp_scrape_walk_duration_seconds Time SNMP walk/bulkwalk took.
# TYPE snmp_scrape_walk_duration_seconds gauge
snmp_scrape_walk_duration_seconds 0.005494467

What is wrong?

воскресенье, 11 ноября 2018 г., 11:20:21 UTC+3 пользователь konst...@mironovs.com написал:

[Ben Kochie]

What happens if you replace "Float" with "DisplayString"?

--
You received this message because you are subscribed to the Google Groups "Prometheus Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to prometheus-use...@googlegroups.com.
To post to this group, send email to promethe...@googlegroups.com.

To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/e3bb4642-24bc-4287-a90a-1e3630b57432%40googlegroups.com.

[Константин Миронов]

If I change type to DisplayString then downloaded file snmp.dms with content:

2320 4845 4c50 2072 7074 5061 5465 6d70

7261 7475 7265 2054 6865 2074 656d 7065

7261 7475 7265 202d 2031 2e33 2e36 2e31

2e34 2e31 2e34 3032 3937 2e31 2e32 2e31

2e32 2e32 0a23 2054 5950 4520 7270 7450

6154 656d 7072 6174 7572 6520 6761 7567

650a 7270 7450 6154 656d 7072 6174 7572

657b 7270 7450 6154 656d 7072 6174 7572

653d 2200 0060 4122 7d20 310a 2320 4845

4c50 2073 6e6d 705f 7363 7261 7065 5f64

7572 6174 696f 6e5f 7365 636f 6e64 7320

546f 7461 6c20 534e 4d50 2074 696d 6520

7363 7261 7065 2074 6f6f 6b20 2877 616c

6b20 616e 6420 7072 6f63 6573 7369 6e67

292e 0a23 2054 5950 4520 736e 6d70 5f73

6372 6170 655f 6475 7261 7469 6f6e 5f73

6563 6f6e 6473 2067 6175 6765 0a73 6e6d

705f 7363 7261 7065 5f64 7572 6174 696f

6e5f 7365 636f 6e64 7320 302e 3031 3239

3631 3138 370a 2320 4845 4c50 2073 6e6d

705f 7363 7261 7065 5f70 6475 735f 7265

7475 726e 6564 2050 4455 7320 7265 7475

726e 6564 2066 726f 6d20 7761 6c6b 2e0a

2320 5459 5045 2073 6e6d 705f 7363 7261

7065 5f70 6475 735f 7265 7475 726e 6564

2067 6175 6765 0a73 6e6d 705f 7363 7261

7065 5f70 6475 735f 7265 7475 726e 6564

2031 0a23 2048 454c 5020 736e 6d70 5f73

6372 6170 655f 7761 6c6b 5f64 7572 6174

696f 6e5f 7365 636f 6e64 7320 5469 6d65

2053 4e4d 5020 7761 6c6b 2f62 756c 6b77

616c 6b20 746f 6f6b 2e0a 2320 5459 5045

2073 6e6d 705f 7363 7261 7065 5f77 616c

6b5f 6475 7261 7469 6f6e 5f73 6563 6f6e

6473 2067 6175 6765 0a73 6e6d 705f 7363

7261 7065 5f77 616c 6b5f 6475 7261 7469

6f6e 5f73 6563 6f6e 6473 2030 2e30 3132

3738 3138 3135 0a

воскресенье, 11 ноября 2018 г., 12:51:53 UTC+3 пользователь Ben Kochie написал:

[Brian Brazil]

It looks like it's exposing it with the wrong endianness.

Brian

 

--
You received this message because you are subscribed to the Google Groups "Prometheus Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to prometheus-use...@googlegroups.com.
To post to this group, send email to promethe...@googlegroups.com.

To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/2d222ff7-387d-44e5-9737-5ccd23bf0306%40googlegroups.com.

For more options, visit https://groups.google.com/d/optout.

--

Brian Brazil

www.robustperception.io

[Константин Миронов]

Are there any solutions?

воскресенье, 11 ноября 2018 г., 14:21:44 UTC+3 пользователь Brian Brazil написал:

[Ben Kochie]

In theory, we could add a special override for this conversion.

To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/2556da0d-63cd-4a2e-9e6b-eaa986e4b123%40googlegroups.com.

[Константин Миронов]

Can I do this or should make changes to the code?

воскресенье, 11 ноября 2018 г., 15:01:14 UTC+3 пользователь Ben Kochie написал:

[Ben Kochie]

This would require changes to the code.

If you're interested in making the code change, you're welcome to send us a PR on GitHub.

To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/fab8a08c-c10a-4fbb-9d96-84be52e5171c%40googlegroups.com.

[Brian Brazil]

On Sun, 11 Nov 2018 at 12:01, Ben Kochie <sup...@gmail.com> wrote:

In theory, we could add a special override for this conversion.

This one is handled by the SNMP client though.

Brian

 

To view this discussion on the web visit https://groups.google.com/d/msgid/prometheus-users/CABbyFmo1TBpPn19hhJn_ubek9gQHPqaYmu%2BpwybF6_wDxwzThA%40mail.gmail.com.

For more options, visit https://groups.google.com/d/optout.

--

Brian Brazil

www.robustperception.io

[Константин Миронов]

Sorry, but I'm not a programmer :(

воскресенье, 11 ноября 2018 г., 17:55:33 UTC+3 пользователь Ben Kochie написал:

[Константин Миронов]

This not standard OID? Why not working change type?

воскресенье, 11 ноября 2018 г., 17:56:00 UTC+3 пользователь Brian Brazil написал:

[Глеб Коньтяков]

Hi!

Was this resolved?

I am struggling with the apparently similar issue:

diameterStackTotalSessionNbr OBJECT-TYPE
    SYNTAX HpeTasLong
    MAX-ACCESS  read-only
    STATUS current
    DESCRIPTION "The total number of ProtocolSession(s) of the DiameterStack since service start, or last reset"
    ::= { diameterStackEntry 3 }

HpeTasLong is OctetString type

Here is the snmpwalk result:

SNMPv2-SMI::enterprises.47196.2.1.2.1.3.5.4.1.1.3.1.2.1.1 = Hex-STRING: 00 00 00 00 00 00 00 F1

When trying to override with gauge type it returns the following:

diameterStackTotalSessionNbr{diameterStackStackIdx="1",serverHostIdx="1",serverProgIdx="2",serviceServiceIdx="1"} 0

For type: DisplayString + regex_replaces the metric is not displayed at all. But log shows:

level=debug ts=2022-06-02T12:34:48.856Z caller=collector.go:428 module=hpe_scp target=10.223.5.112:161 msg="Error parsing float64 from value" metric=diameterStackTotalSessionNbr value="\u0000\u0000\u0000\u0000\u0000\u0000\u0001\u0016" regex=^(?:(.*))$ extracted_value="\u0000\u0000\u0000\u0000\u0000\u0000\u0001\u0016"

For type: OctetString the metric is displayed along with the label with hex value:

diameterStackTotalSessionNbr{diameterStackStackIdx="1",diameterStackTotalSessionNbr="0x0000000000000116",serverHostIdx="1",serverProgIdx="2",serviceServiceIdx="1"} 1

after attempting to add regex_replaces - there is no metric and log shows:

level=debug ts=2022-06-02T12:38:54.999Z caller=collector.go:428 module=hpe_scp target=10.223.5.112:161 msg="Error parsing float64 from value" metric=diameterStackTotalSessionNbr value=0x0000000000000116 regex=^(?:(.*))$ extracted_value=0x0000000000000116

Any suggestions?

I saw that for andrewd-sterling the approach worked and hex value became a String https://github.com/prometheus/snmp_exporter/issues/186#issuecomment-389914695. But probably this is just because snmp originally returned this value as STRING...

In case if this is not yet supported and if any additional code change is required we might try to contribute conversion of such hex values with PR.

Thanks,

Gleb

вторник, 13 ноября 2018 г. в 02:14:42 UTC+4, Константин Миронов:

[Глеб Коньтяков]

I was able to solve the issue. Described in https://discuss.prometheus.io/t/snmp-exporter-octetstring-shown-as-hex-string-to-parse-as-int/1032

четверг, 2 июня 2022 г. в 21:52:15 UTC+4, Глеб Коньтяков: