Introduction to Macros (macro) on Zabbix

Macros: macro, preset text substitution mode:

A macro is an abstract concept (abstraction) that replaces certain text patterns based on some of the predefined rules of a column, whereas an explanation or compiler automatically replaces this pattern when it encounters a macro. Similarly, Zabbix saves the preset text pattern based on a macro, and replaces it with the text in it when it is called.

The built-in {MACRO} does not need to be added $ to reference:

Zabbix has many built-in macros, such as {host.name}, {HOST. IP}, {TRIGGER. DESCRIPTION}, {trigger.name}, {TRIGGER. EVENTS. ACK}, and so on.

For system built-in macros, refer to Zabbix official documentation:

Https://www.zabbix.com/documentation/3.0/manual/appendix/macros/supported_by_location

1 Macros supported by Location section

The custom {$MACRO} needs to be added $ to reference:

Note: You need to add $ for both calls and definitions

For greater flexibility, Zabbix also supports the use of user-defined macros at the Global, template, or host level

User-defined macros use the special syntax format "{$MACRO}"

Macros can be applied in the item keys and descriptions, trigger names and expressions, host interfaces Ip/dns and ports, and the discovery mechanism for information about the SNMP protocol medium.

The name of the macro can only use uppercase letters, numbers, and underscores

User-defined macros are available in the following two ways:

Global macro: "Administrator-->general-->macros"

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Host or template-level macros: Edit the properties of the appropriate host or template to

For user-defined macros, refer to the Zabbix official documentation:

Https://www.zabbix.com/documentation/3.0/manual/appendix/macros/supported_by_location

Additional Support for User macros section

The level of the macro:

Global: Define global macros, globally defined

Templates: Defining template macros, defining them on a template

Host: Define a host macro, defined on the host

Substitution Order for macros:

The host uses the macro:

Hosts--Templates--Global (lookup order, priority order: host------)

Look on the host first, if the host is not defined, and then look in the template, if still not defined, in the global find

The first is the host-level macros;

Second, the current host in the first-level template (directly linked to the host template) of the macro, a number of first-class templates by their ID number sorting;

In the following is the macro in Level two template (template linked template);

The last check is the global macro;

Zabbix If you cannot find a macro that is used by a host definition, it will not be replaced.

Macros Use Example:

Define a macro named {$CPUMAXSWITCHES} at the host level to define a reasonable number of CPU context switches accepted by the current host

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Use this macro variable in trigger:

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This article is from the "Wang Liming" blog, make sure to keep this source http://afterdawn.blog.51cto.com/7503144/1924147

Introduction to Macros (macro) on Zabbix