45 lines
2.0 KiB
Markdown
45 lines
2.0 KiB
Markdown
<a id="Service-apply-for-example"></a>Working with Apply for rules - tcp ports example
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This example wants to show you how to make use of `Apply For` rule for services.
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First you need to define a `tcp_ports` data field of type `Array` assigned to a `Host Template`.
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Refer to [Working with fields](14-Fields-example-interfaces-array.md) section to setup a data field.
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You also need to define a `tcp_port` data field of type `String`, we will associate it to a
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`Service Template` later.
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Then, please got to the `Dashboard` and choose the `Monitored services` dashlet:
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Then create a new `Service template` with check command `tcp`:
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Then associate the data field `tcp_port` to this `Service template`:
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Then create a new `apply-rule` for the `Service template`:
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Now define the `Apply For` property, select the previously defined field `tcp_ports` associated to
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the host template. `Apply For` rule define a variable `config` that can be used as `$config$`, it
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corresponds to the item of the array it will iterate on.
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Set the `Tcp port` property to `$config$`:
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(Side note: if you can't see your `tcp_ports` property in `Apply For` dropdown, try to create one
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host with a non-empty `tcp_ports` value.)
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That's it, now all your hosts defining a `tcp_ports` variable will be assigned the `Tcp Check`
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service.
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Have a look at the config preview, it will show you how `Apply For` services will look like once
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deployed:
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