[chef] Re: stop service / config file change / start service

[Joshua Timberman < >]

Hello!

On Thu, Jul 14, 2011 at 12:22 PM, Steven Parkes 
<
 >
 wrote:
> Sorry if this is covered elsewhere, but I'm wondering if there is/shouldn't 
> be a way to stop a service before making config file changes, rather than 
> restarting afterwards.
>
> An example is networking: I want to stop it using the old config and then 
> start it with the new config. Otherwise, it gets confused because the 
> number of interfaces may have changed. Doing a stop with the new config 
> file is not the same thing as doing a stop with the old config.
>
> Unless there's another/better way to do this ...

Sure, you can reuse the same named resource and send it multiple
actions. You'll want a conditional that wraps the recipe so it doesn't
occur (stop networking) unless necessary). For example, we do this in
the mysql::server_ec2 recipe to move the data directory of MySQL to
ephemeral storage (or an EBS volume depending on the attribute
setting)

* https://github.com/opscode/cookbooks/blob/master/mysql/recipes/server_ec2.rb

Though for networking I'd want to be very careful about how this is
handled as it may be ...problematic if there's an error.

-- 
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Joshua Timberman, Director of Training and Services
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