icinga2/doc/3.05-using-templates.md

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## <a id="using-templates"></a> Using Templates
Templates may be used to apply a set of identical attributes to more than one
object:
template Service "generic-service" {
max_check_attempts = 3
check_interval = 5m
retry_interval = 1m
enable_perfdata = true
}
object Service "ping4" {
import "generic-service"
host_name = "localhost"
check_command = "ping4"
}
object Service "ping6" {
import "generic-service"
host_name = "localhost"
check_command = "ping6"
}
In this example the `ping4` and `ping6` services inherit properties from the
template `generic-service`.
Objects as well as templates themselves can import an arbitrary number of
templates. Attributes inherited from a template can be overridden in the
object if necessary.