heat-templates/tests/software_config/hook_kubelet.py
Steve Baker 841ee38a35 heat-config-kubelet hook
This hook uses the kubelet agent from the kubernetes project
to provision containers. The StructuredConfig resource data
represents a pod of containers to be provisioned.

The files have the following purpose:
- extra-data.d/50-docker-images allows an archive file of docker images to
  be included in the dib image
- install.d/50-heat-config-kubelet installs kubernetes for redhat based distros
  during dib image build, along with the required systemd and config files required
  to enable a working kubelet service on the host
- install.d/hook-kubelet.py polls docker images and containers until the expected
  kubelet-provisioned containers are running (or a timeout occurs)
- os-refresh-config/configure.d/50-heat-config-kubelet runs before 55-heat-config
  (and the kubelet hook it triggers). This orc script writes out all pod definition files
  for the pods that should currently be running. Kubelet is configured to monitor
  the directory containing these files, so the current running containers will
  change when kubelet acts on these config changes

Author: Steve Baker <sbaker@redhat.com>
Co-Authored-By: Rabi Mishra <ramishra@redhat.com>

Change-Id: Iabb844c7d8a6f916093c364ad8caa0dbe50df3dd
2015-04-02 08:41:38 +05:30

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../../hot/software-config/elements/heat-config-kubelet/install.d/hook-kubelet.py