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admin guide: formatting fixes, discuss executors

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Ariadne Conill 2020-08-18 20:33:44 -06:00
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doc/ADMIN-GUIDE.md
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@ -135,7 +135,7 @@ iface eth0
gateway 2001:db8:1000:2::1 gateway 2001:db8:1000:2::1
``` ```
### Relationships ## Relationships
As previously mentioned, ifupdown-ng features a dependency As previously mentioned, ifupdown-ng features a dependency
resolver that allows for determining the interface configuration resolver that allows for determining the interface configuration
@ -146,7 +146,7 @@ order.
In order to make use of this, dependencies can be managed in one In order to make use of this, dependencies can be managed in one
of two ways: of two ways:
#### Explicit dependency management using `requires` ### Explicit dependency management using `requires`
The `requires` keyword can be used to manage explicit The `requires` keyword can be used to manage explicit
dependencies: dependencies:
@ -169,7 +169,7 @@ iface gre0
gateway 203.0.113.193 gateway 203.0.113.193
``` ```
#### Implicit dependency management using executors ### Implicit dependency management using executors
Executors can declare implicit dependencies which work the same Executors can declare implicit dependencies which work the same
way as explicit dependencies, but are learned at run-time, for way as explicit dependencies, but are learned at run-time, for
@ -195,6 +195,23 @@ iface bond0
[...] [...]
``` ```
## Executors
The ifupdown-ng system is expanded with additional features via
executors. Executors are selected on a per-interface basis using
`use` statements, for example:
```
auto eth0
iface eth0
use dhcp
```
Executors are run in the order specified by the `use` statements.
Some executors are automatically added based on other statements
in an interface definition. To see the full list of executors
used for an interface, use the ifquery(8) command.
## Questions ## Questions
If you have further questions about how to use ifupdown-ng to If you have further questions about how to use ifupdown-ng to