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  1. ZABBIX BUGS AND ISSUES
  2. ZBX-17146

very unclear case(s) when "check now" actually does not work

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    • Team A
    • Sprint 65 (Jun 2020), Sprint 66 (Jul 2020), Sprint 67 (Aug 2020), Sprint 68 (Sep 2020), Sprint 69 (Oct 2020), Sprint 70 (Nov 2020), Sprint 71 (Dec 2020), Sprint 72 (Jan 2021), Sprint 73 (Feb 2021), Sprint 74 (Mar 2021), Sprint 75 (Apr 2021), Sprint 76 (May 2021), Sprint 77 (Jun 2021), Sprint 78 (Jul 2021), Sprint 79 (Aug 2021), Sprint 80 (Sep 2021), Sprint 81 (Oct 2021), Sprint 82 (Nov 2021), Sprint 83 (Dec 2021)

    Description

      In 4.4 we have new, modular templates. Key point here no modularity, but complexity, usage of "multi-layer" features.

      They are so powerful, using so many different features of zabbix, that sometimes are really complicated for understanding, especially for not too experienced users.

      For example, we have "Template OS Linux by Zabbix agent" (which probably the most usable), where we have "Block devices discovery" LLD rule, which is dependent item.

      Imagine please that I had to customize user macro {$VFS.DEV.DEVNAME.NOT_MATCHES} on some host level, to apply host specific filtering. I did it and and for testing, I made "Check now" for the master item "Get /proc/diskstats".
      And it did not work ....

      Because on the LLD rule level, we have "Discard unchanged with 1h heartbeat" preprocessing rule. Which, btw, comes from template, so we cannot adjust/delete temporary on host level.

      So, basically, "Check now" does not work for the LLD rule, which is sad.

      Two thing to consider:
      1. Make core-level templates not so "cool" and working more straightforward.
      2. Ignore "Discard ..." preprocessing steps, when a value collected not by normal poling, but because of "Check now" usage by frontend user.

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              zabbix.dev Zabbix Development Team
              zalex_ua Oleksii Zagorskyi
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