Cannot parse as a valid JSON object for custom discovery rule

[Valelinn]

Hello,

I'm running Zabbix 5.0.2, and I've trying to create a custom discovery rule. I tried a very simple test to see how this works:

1. I created a discovery rule on a host with key "test.discovery".
2. From the Zabbix server itself, I run the following command: zabbix_sender -z 127.0.0.1 -s "testhost" -k test.discovery -o {"{#SITENAME}":"test.com"}
3. However, Zabbix gives me the following error message:

   Invalid discovery rule value: cannot parse as a valid JSON object: invalid object name at: '{#SITENAME}:test.com}'

I've tried different variations of the JSON value:

• [{"{#SITENAME}":"test.com"}]
• "{"{#SITENAME}":"test.com"}"
• "[{"{#SITENAME}":"test.com"}]"

but all just return the same result.

I'm really at a loss here as to what I'm doing wrong. Any assistance would be appreciated.

[dimir]

Bash strips out your double quotes. In order to be on the safe side always single-quote the while json value:

zabbix_sender -z 127.0.0.1 -s testhost -k test.discovery -o '[{"{#SITENAME}":"test.com"}]'

[moora]

I have similiar problem:
1511:20221105:165212.896 cannot process returned result: cannot parse as a valid JSON object: invalid object format, expected opening character '{' or '[' at: 'OK'
is there i way to find out in which item the problem is happening?
I will then use the recommended solutions from you, but the json is so short, I cannot find it

Thak you

[markfree]

I have similiar problem:
1511:20221105:165212.896 cannot process returned result: cannot parse as a valid JSON object: invalid object format, expected opening character '{' or '[' at: 'OK'
is there i way to find out in which item the problem is happening?
I will then use the recommended solutions from you, but the json is so short, I cannot find it

I have an environment with the same issue and I could not find any error in any Discovery rule.
ffg

[Markku]

Can you markfree post the JSON here?

The previous poster had a simple problem: plain string OK is not valid JSON for sure.

Markku

[markfree]

Can you markfree post the JSON here?
The previous poster had a simple problem: plain string OK is not valid JSON for sure.

My issue is exactly like moora's.
Like him, I cannot find where that string is coming from.

[Markku]

Can you then show the discovery rule configuration with relevant scripts if present, and the output of the discovery rule key? Note also the preprocessing rules.

Markku

[moora]

Can you then show the discovery rule configuration with relevant scripts if present, and the output of the discovery rule key? Note also the preprocessing rules.

Markku

I see the problem in the zabbix log - I have no idea vwhere it is comming from