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A FreeBSD AMI Builder AMI |
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Présentation : I've been working on the FreeBSD EC2 platform for a long time five years ago I finally had it running, and for the past few years it has provided the behaviour FreeBSD users expect stability and high performance across all EC2 instance types. Making the platform work was just the first step though next comes making it usable. Some people are happy with simply having a virtual machine which runs the base FreeBSD system for them, the published FreeBSD EC2 images which, as of FreeBSD 10.2-RELEASE, are built by the FreeBSD Release Engineer will be sufficient. For users who want to use stock FreeBSD but would like to have some extra setup performed when the instance launches say, to install some packages, edit some configuration files, and enable some services I wrote the configinit tool. And for users who need to make changes to FreeBSD itself, I added code for building AMIs into the FreeBSD source tree, so you can take a modified FreeBSD tree and run make ec2ami to generate a reusable image. There was one group for whom I didn't have a good solution yet, however Users who want to create FreeBSD AMIs with minor changes, without wanting to go to the effort of performing a complete FreeBSD release build. Ironically, I am exactly such a user All of the EC2 instances I use for my online backup service make use of spiped to protect sshd and provide encrypted and authenticated tunnels to my mailserver and package server and so having spiped preinstalled with the appropriate keys would significantly streamline my deployment process. While it's possible to launch a FreeBSD EC2 instance, make some changes, and then ask EC2 to create a new AMI out of it, this rarely produces a clean AMI A lot of code runs when an EC2 instance first launches creating the ec2-user user, installing the appropriate SSH public key, creating SSH host keys, growing the root filesystem if launched with a larger root disk, downloading and installing updates to FreeBSD, downloading and installing packages... and much of this needs to be manually reverted before a reusable AMI can be created not to mention command histories and log files written during the configuration process, which the more fastidious among us may wish to avoid publishing. To solve this problem, I present the FreeBSD AMI Builder, now available as ami-28682f42 in the EC2 US-East-1 region.
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