[chef] Re: RE: Re: Does Chef have support for multi-boot install

[Nathan Williams < >]

you'd want to have the reboot resource have a default "action :nothing", and then have the resources that require a reboot notify the reboot resource to run. the concept of idempotency doesn't really apply to an "action", which is why execute resources aren't inherently idempotent (though the result may be).

On Wed, Aug 12, 2015 at 12:49 PM Fouts, Chris < "> > wrote:

Is the reboot resource idempotent? To extend Joshua’s answer one can run chef-client as a daemon on a node and run this recipe.

# Put resources that need to converge before a reboot here

resource1 “Some resource”                                  

resource2 “Some resource”

 

# Reboot the machine

reboot “Need to reboot for kernel changes to take effect”

 

# Put resources that need to converge after a reboot here

Resource3 “Some resource”                                 

Resource4 “Some resource”

What will this recipe do after the reboot? I know it will not converge resource1 and resource2, but will it converge the reboot resource? You can put guards against it but just wondering what the vanilla behavior will be.

 

Chris

 

 

From: Joshua Timberman [mailto: " target="_blank"> ]
Sent: Monday, August 10, 2015 9:56 AM
To: " target="_blank">
Subject: [chef] Re: Does Chef have support for multi-boot install

 

You are correct in that Chef doesn't have a "resume after reboot" option. However, Chef is both idempotent and convergent. Rerunning chef after reboot will result in NOT configuring the system resources that are in the state declared by the recipes. For example, if your recipes manage a config file and install a package, those won't change when chef reruns. However if the reboot made a change to a file chef manages then it will be updated by chef after the reboot. 

 

Make sense?

 

Cheers,

Joshua

On Sunday, August 9, 2015, Jubal Kohlmeier < " target="_blank"> > wrote:

Hello,

I am new to chef, and have gone the effort to port a few cookbook recipes to the AIX operating system. In one of my recipes, i update kernel parameters. However, on AIX, the parameters
require a reboot of the OS for them to come into effect. Does CHEF have multi-boot support? I suspect not. Ive found recipe's for shutting down the os, but nothing for support the
chef kitchen for 'waiting for the os to come back up' and continue installation.

Do i have it correctly?

Jubal Kohlmeier            
503-747-1333                 503-502-7733 cell
IT Specialist  Oracle Applications Benchmark