Cannot extract value from jsaon

[Ahmad Abu hashem]

I have zabbix_server 4.2.4 and I have this error in /var/log/zabbix_zabbix_server.log on ubuntu 18.4
I have no idea what to do to not have this error. please help me to figure out?

"0", "ReqEdns0": "11262482", "ReqBadEDNSVer": ...
1. Failed: cannot extract value from json by path "$.cache.ANY": object not found starting with json path: "ANY"
13787:20200116:120003.106 error reason for "DNS:bind.cache[NAPTR]" changed: Preprocessing failed for: {"counter": {"Requestv4": "15238832", "Requestv6": "0", "ReqEdns0": "11262482", "ReqBadEDNSVer": ...
1. Failed: cannot extract value from json by path "$.cache.NAPTR": object not found starting with json path: "NAPTR"
13787:20200116:120003.106 error reason for "DNS:bind.cache[SOA]" changed: Preprocessing failed for: {"counter": {"Requestv4": "15238832", "Requestv6": "0", "ReqEdns0": "11262482", "ReqBadEDNSVer": ...
1. Failed: cannot extract value from json by path "$.cache.SOA": object not found starting with json path: "SOA"
13787:20200116:120003.106 error reason for "DNS:bind.cache[MX]" changed: Preprocessing failed for: {"counter": {"Requestv4": "15238832", "Requestv6": "0", "ReqEdns0": "11262482", "ReqBadEDNSVer": ...
1. Failed: cannot extract value from json by path "$.cache.MX": object not found starting with json path: "MX"
13787:20200116:120003.106 error reason for "DNS:bind.cache[SPF]" changed: Preprocessing failed for: {"counter": {"Requestv4": "15238832", "Requestv6": "0", "ReqEdns0": "11262482", "ReqBadEDNSVer": ...
1. Failed: cannot extract value from json by path "$.cache.SPF": object not found starting with json path: "SPF"

[Atsushi]

Isn't there a place in the input JSON format that matches the set JSON Path expression? Check the content of the input JSON format.

[gert.derouck]

You can validate your expression with some online tester, eg https://jsonpath.com/

[Ahmad Abu hashem]

Hi,

I Have no idea from where these output come from. where Can I find the input that made this problems. Is it in the configuration files in zabbix installation or from the GUI there I see my triggers and items?
It will be so great if you can take my hand step by step through that, please?

[gert.derouck]

You can start looking in the items which are in state 'Not Supported'; these DNS:bind.cache[XXX] items will be listed there.
Check on which host they are configured and see how/what data is collected by the item.

[Ahmad Abu hashem]

I found the host that made this problem and disabled the items that are not supported. It helps alot. Thank you very much Genius.
But I didn't realy get how can I check the input Json format, or clearlt which expression shoud I test! Is it in item, Is it Key, where is the script that I need to foumd?
But the problem is solved now thanks

[gert.derouck]

Hi, paste a screenshot of the relevant discovery item here, so we can see where the data is coming from...

[Ahmad Abu hashem]

Do you mean this one. this is from the host that had the problem.

[dimir]

No, on the right from "Items" you have the "Discovery rules" tab. Click it and click item named "DNS: Bind - Master JSON".

[Ahmad Abu hashem]

I have to Bind-Master jSON som rule

[gert.derouck]

Almost there...
In your last screenshot you see the 'Item Prototypes' (37). The one you're looking for must be one these.