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diff --git a/packer/README.markdown b/packer/README.markdown new file mode 100644 index 00000000..beb03214 --- /dev/null +++ b/packer/README.markdown @@ -0,0 +1,37 @@ +# AutomotiveLinux.org CI Packer + +[Packer][1] is a tool for automatically creating VM and container images, +configuring them and post-processing them into standard output formats. + +We build AutomotiveLinux.org's CI images via Packer. + +## Building + +You'll need to [install Packer][2], of course. + +AutomotiveLinux.org's Packer configuration is divided into build-specific variables, +output-specific templates and a set of shared provisioning scripts. To do a +specific build, combine the template for the desired output artifact type with +a variable file. To build a new basebuild instance the following would be done: + +``` +packer build -var-file=vars/cloud-env.json -var-file=vars/centos.json templates/basebuild.json +``` + +**NOTE:** vars/cloud-env.json is a gitignored file as it contains private +information. There is a vars/cloud-env.json.example file that may be used as a +base for creating the one needed. + +This would build a bootable image in the AutomotiveLinux.org CI cloud environment. + +From a high level, the builds: + +* Boot a specified base image in the cloud +* Run a set of shell scripts, listed in the template's shell provisioner + section, to do any configuration required by the builder. +* Execute a shutdown of the running instance +* Execute a 'nova image-create' operation against the shutdown instance. +* Perform a 'nova delete' operation against the shutdown instance. + +[1]: https://www.packer.io/ +[2]: https://www.packer.io/intro/getting-started/setup.html |