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Problem report
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Resolution: Fixed
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Blocker
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6.0.34
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S24-W40/41
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2
Steps to reproduce:
- Need to use one of two affected templates "Website certificate by Zabbix agent 2" for ZBX 6.0 version or "Windows by Zabbix agent" for ZBX 5.0 version for at least one host.
- Upgrade Zabbix server to 6.0.34 LTS version.
- Wait for master items of dependent items next execution or test by "Execute Now".
Result:
In hosts with template "Website certificate by Zabbix agent 2" all dependent items become unsupported with similar error messages (only change is json path):
Preprocessing failed for: 1. Failed: cannot extract value from json by path "$.x509.not_after.timestamp": cannot convert value to string
From Zabbix server log file:
1024697:20240927:162737.380 state:1 error:'Preprocessing failed for: 1. Failed: cannot extract value from json by path "$.x509.not_before.timestamp": cannot convert value to string' 1024697:20240927:162737.380 flags:0 status:0 1024697:20240927:162737.380 valuemapid:0 1024697:20240927:162737.380 lastlogsize:0 mtime:0 1024697:20240927:162737.380 delay:'0' nextcheck:0 1024697:20240927:162737.380 data_expected_from:1727429265 1024697:20240927:162737.380 history:1 history_sec:604800 1024697:20240927:162737.380 poller_type:255 location:0 1024697:20240927:162737.380 inventory_link:0 1024697:20240927:162737.380 priority:1 schedulable:1 1024697:20240927:162737.380 units:'unixtime' trends:1 1024697:20240927:162737.380 depitem:[flags:0 last_master_itemid:0 master_itemid:390471] 1024697:20240927:162737.380 preprocessing: 1024697:20240927:162737.380 update_time:1727429266 1024697:20240927:162737.380 opid:189753 step:1 type:12 params:'$.x509.not_before.timestamp' error_handler:0 error_handler_params:'' 1024697:20240927:162737.380 tags: 1024697:20240927:162737.380 tagid:11111 tag:'component' value:'cert' 1024697:20240927:162737.380 itemid:44444 hostid:222 key:'cert.version' 1024697:20240927:162737.380 type:18 value_type:1 1024697:20240927:162737.380 interfaceid:0 1024697:20240927:162737.380 state:1 error:'Preprocessing failed for: 1. Failed: cannot extract value from json by path "$.x509.version": cannot convert value to string'
When testing dependent items preprocessing, it works - it get's the parsed result from items "Cert: Get" data.
Issue also with hosts who have template "Windows by Zabbix agent". Dependent items that fail are from "Network interfaces discovery" discovery:
Preprocessing failed for: 1. Failed: cannot extract value from json by path "$[?(@.GUID == "{DDDDDDDD-YYYY-BBBB-CCCC-DDDDDDDDDDDD}")].NetConnectionStatus.first()": cannot convert value to string Preprocessing failed for: 1. Failed: cannot extract value from json by path "$[?(@.GUID == "{DDDDDDDD-YYYY-BBBB-CCCC-DDDDDDDDDDDD}")].AdapterTypeId.first()": cannot convert value to string
Same thing here with testing - when testing item preprocessing it returns intended value.
It is strange that for this template there is no issues with other dependent item - "Network interfaces WMI get: Interface {#IFNAME}({#IFALIAS}): Speed".
Workaround:
Reinstall 6.0.33 LTS version of Zabbix components.
Expected:
That dependent items with JSONpath preprocessing continuous to work.
