[chef] Re: Re: Re: knife ec2 plugin

[Jim Croft < >]

I've posted a similar method here: https://gist.github.com/3722252

This uses cloud-init rather than a custom script (pros and cons there) in the user-data and works on recent Ubuntu AMIs. I believe Amazon have also forked cloud-init to make it work on Amazon Linux, CentOS, etc. I've only ever used it with Ubuntu though.

Cheers

Jim

On 14 September 2012 15:04, Edward Sargisson < " target="_blank"> > wrote:

Point 2 doesn't require a custom AMI if you don't want it to. You can do autoscaling with a virgin AMI and use user-data bootstrapping to get chef-client on there and running.

Details on my site here: http://www.trailhunger.com/blog/technical/2011/05/28/keeping-an-amazon-elastic-compute-cloud-ec2-instance-up-with-chef-and-auto-scaling/

Cheers,
Edward

On Thu, Sep 13, 2012 at 9:15 AM, John Martinez < " target="_blank"> > wrote:

On Sep 13, 2012, at 9:01 AM, Daniel DeLeo < " target="_blank"> > wrote:

On Thursday, September 13, 2012 at 7:46 AM, Maven User wrote:

Hi all -

With knife's ec2 plugin (which is awesome), I can create and instance from an ami, but I cannot go the other way.

The use case is this:

virgin ubuntu 12.X ami -> knife clone/bootstrap with our product -> create ami from this instance (for consumption elsewhere)

Before I start diving down this rabbit hole, is/was there a reason NOT to do this?  Time? Or was there a technical reason?  Does this feature exist and I don't see it?

Just curious, seems like a good feature to have but don't want to waste a ton of time if there was a technical reason NOT to do this.

Creating an AMI is an involved process. Most people only follow the pattern you describe when their initial chef-client runs take a prohibitive amount of time and they need really fast instance creation for things like autoscaling.

Concur. From my experience, the two main reasons I use to create custom AMIs in AWS to use in conjunction with Chef:

1. To cut-down on instance boot up time (as described by Daniel)
2. You are using Autoscaling or CloudFormation where the knife API command can't be used

-john

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Jim Croft
Systems Developer, Cloudreach Limited

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