Zabbix Low-Level Discovery (LLD) and Overrides Quiz Day2 P4
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Questions and Answers

What can be included in graph prototypes?

  • Same LLD rule item prototypes
  • Only host/template regular items
  • Filters only
  • Any host/template regular item (correct)

    • What is the default behavior of discovery rules?

  • They return a subset of discovered objects
  • They return only host/template regular items
  • They return filtered objects
  • They return every discovered object (correct)

    • What can be filtered out from the discovered objects?

  • Objects with unique names
  • Objects that may not be needed (correct)
  • All discovered objects
  • Only host/template regular items

    • What is the purpose of the discovery filter {#FSNAME}=/var,/log?

    <p>To include only objects with names '/var' and '/log'</p> Signup and view all the answers

    What items are created based on the discovery filter {#FSNAME}=/var,/log?

    <p>vfs.fs.size[/var,free] and vfs.fs.size[/log,free]</p> Signup and view all the answers

    What is the purpose of the graph prototypes?

    <p>To include host/template regular items in graphs</p> Signup and view all the answers

    What can be included in the discovery rules by default?

    <p>Every discovered object</p> Signup and view all the answers

    What is the purpose of the discovery rule 'vfs.fs.discovery'?

    <p>To return every discovered object</p> Signup and view all the answers

    What is the purpose of the discovery filter {#FSNAME}=/sys,/dev?

    <p>To include only objects with names '/sys' and '/dev'</p> Signup and view all the answers

    What items are created based on the discovery filter {#FSNAME}=/sys,/dev?

    <p>vfs.fs.size[/sys,free] and vfs.fs.size[/dev,free]</p> Signup and view all the answers

    What are the options for calculating filters in Zabbix?

    <p>And, Or, And/Or, and Custom expression</p> Signup and view all the answers

    Which filter condition operators are available in Zabbix?

    <p>Matches, Does not match, Exists, Does not exist</p> Signup and view all the answers

    What entities do override operations in Zabbix affect?

    <p>Items, Triggers, Graphs, Hosts created from host prototypes</p> Signup and view all the answers

    What is the practical setup for LLD in Zabbix?

    <p>Creating new filters, ensuring their functionality, and cleaning up lost items</p> Signup and view all the answers

    In what order are overrides executed in Zabbix?

    <p>The order they are defined</p> Signup and view all the answers

    What is the rule type called for discovery using dependent items in Zabbix?

    <p>Dependent item</p> Signup and view all the answers

    What happens if a master item's history is set to 'Do not keep history' in Zabbix?

    <p>The master item will populate only dependent items</p> Signup and view all the answers

    How are dependent items displayed in Zabbix?

    <p>With their master item name as a prefix in the item list</p> Signup and view all the answers

    What is the limit on the number of levels for creating dependent items from another dependent item in Zabbix?

    <p>Up to 3 levels supported</p> Signup and view all the answers

    What does a discovery rule do in Zabbix?

    <p>Discover entities and fill discovered items with values</p> Signup and view all the answers

    What is the purpose of the 'vfs.fs.get' item key in Zabbix?

    <p>To collect raw data of the file system</p> Signup and view all the answers

    What is the main function of the dependent discovery rule in Zabbix?

    <p>To discover filesystems using data collected by specific items</p> Signup and view all the answers

    What is the purpose of item prototypes in Zabbix?

    <p>To monitor total and free space on filesystems</p> Signup and view all the answers

    What is the purpose of excluding the /run/* and /tmp/* filesystems from monitoring in Zabbix?

    <p>To prevent monitoring temporary and runtime filesystems</p> Signup and view all the answers

    What is the purpose of the 'Discard unchanged with a heartbeat' preprocessing step in the LLD rule?

    <p>To discard unchanged data with a specified heartbeat interval</p> Signup and view all the answers

    What is the purpose of the 'Dependent LLD Rule' in Zabbix?

    <p>To discover filesystems using data collected by specific items</p> Signup and view all the answers

    What is the function of the 'Discard unchanged with heartbeat' step in the LLD rule?

    <p>To discard unchanged data with a specified heartbeat interval</p> Signup and view all the answers

    What is the primary purpose of the 'vfs.fs.discovery' discovery rule?

    <p>To discover filesystems using data collected by specific items</p> Signup and view all the answers

    What is the primary purpose of the 'Training Low-level discovery' template in Zabbix?

    <p>To discover filesystems using data collected by specific items</p> Signup and view all the answers

    What is the purpose of the user macro used to define the LLD filter in Zabbix?

    <p>To customize the filtering of discovered objects</p> Signup and view all the answers

    Study Notes

    Zabbix Low-Level Discovery (LLD) and Overrides

    • The Filters tab in Zabbix contains filter definitions with options like regular expressions, user macros, and global regular expressions.
    • Options for calculating filters include And, Or, And/Or, and Custom expression, affecting the treatment of filtered out objects.
    • Filter condition operators available in Zabbix include matches, does not match, exists, and does not exist, based on LLD macro presence or absence.
    • Practical setup for LLD involves creating new filters, ensuring their functionality, and cleaning up lost items.
    • Overrides in Zabbix allow setting rules to modify attributes for discovered objects based on filter matching LLD macros.
    • Override operations in Zabbix affect entities like items, triggers, graphs, and hosts created from host prototypes, with options to change attributes for discovered objects.
    • Overrides in Zabbix are executed in the order they are defined, and subsequent overrides are processed based on the "Continue overrides" setting.
    • A practical setup for overrides involves adding a new dummy network interface, creating trigger prototypes, executing the network interfaces discovery rule, and creating overrides for triggers.
    • Discovery using dependent items in Zabbix involves a rule type called Dependent item, which is updated every time the master item collects data.
    • A discovery rule can create dependent items in Zabbix, which may depend on regular items in the same host/template or items created from a prototype by the same discovery rule.
    • Master item data in Zabbix can be used to discover entities and fill discovered items with values, and if a history is set to "Do not keep history," the master item will populate only dependent items.
    • In Zabbix, dependent items are displayed with their master item name as a prefix in the item list, and it is possible to create a dependent item from another dependent item, up to 3 levels supported.

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    Description

    Test your knowledge of Zabbix Low-Level Discovery (LLD) and Overrides with this quiz. Explore topics such as filter definitions, filter conditions, practical setup for LLD, override operations, and discovery using dependent items. Perfect for Zabbix users looking to enhance their understanding of LLD and overrides.

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