add script and instructions building Deis-optimized AMI from scratch #21

Author: Gabriel Monroy

contrib/prepare-ubuntu-ami.sh

@@ -0,0 +1,58 @@
+#!/bin/bash -ex
+
+#
+# Prepare a Deis-optimized AMI from a vanilla Ubuntu 12.04
+#
+# Instructions:
+#
+#   1. Launch a vanilla Ubuntu 12.04 instance (64-bit with an EBS root volume)
+#   2. SSH in and install the 3.8 kernel with:
+#      apt-get update && apt-get install -yq linux-generic-lts-raring && reboot
+#   3. After reboot is complete, SSH in and `uname -r` to confirm kernel is 3.8
+#   4. Run this script (as root!) to optimize the image for fast boot times
+#   5. Create a new AMI from the root volume
+#   6. Distribute the AMI to other regions using `ec2-copy-image`
+#   7. Create/update your Deis flavors to use your new AMIs
+#
+
+# add docker ppa
+apt-add-repository ppa:dotcloud/lxc-docker -y
+
+# upgrade to latest packages
+apt-get update
+apt-get dist-upgrade -yq
+
+# install required packages
+apt-get install lxc-docker curl git python-setuptools python-pip -yq
+
+# create buildstep docker image
+git clone https://github.com/opdemand/buildstep.git
+cd buildstep
+./build.sh ./stack deis/buildstep
+cd ..
+rm -rf buildstep
+
+# install chef 11.x deps
+apt-get install -yq ruby1.9.1 ruby1.9.1-dev make
+update-alternatives --set ruby /usr/bin/ruby1.9.1
+update-alternatives --set gem /usr/bin/gem1.9.1
+
+# clean and remove old packages
+apt-get clean
+apt-get autoremove -yq
+
+# reset cloud-init
+rm -rf /var/lib/cloud
+
+# purge SSH authorized keys
+rm -f /home/ubuntu/.ssh/authorized_keys
+rm -f /root/.ssh/authorized_keys
+
+# ssh host keys are automatically regenerated
+# on system boot by ubuntu cloud init
+
+# purge /var/log
+find /var/log -type f | xargs rm
+
+# flush writes to block storage
+sync