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OpenStack with Terraform

Prerequsities:

  1. The latest Container Linux Alpha (1339.0.0 or later) uploaded into Glance and its OpenStack image ID.
  2. Since OpenStack nova doesn't provide any DNS registration service, AWS Route53 is being used in this example. Ensure you have a configured aws CLI installation.
  3. Ensure you have OpenStack credentials set up, i.e. the environment variables OS_TENANT_NAME, OS_USERNAME, OS_PASSWORD, OS_AUTH_URL, OS_REGION_NAME are set.
  4. Create a folder with the cluster's name under ./build (e.g. ./build/<cluster-name>)

Either

  • Copy the assets-<cluster-name>.zip to ./boot/<cluster-name> or
  • Create a config.tfvars file in the root of the repo having the following properties set. All other options can be left empty.
tectonic_worker_count = <worker count>

tectonic_master_count = <master count>

tectonic_base_domain = "my.domain"

tectonic_cluster_name = "test"

tectonic_admin_email = "[email protected]"

tectonic_admin_password_hash = "<bcrypt-tool encoded password>"

tectonic_license = "..."

tectonic_pull_secret = "..."

Note: The bcrypt-tool is available at https://github.com/coreos/bcrypt-tool.

Flavors

The following example flavors are included:

  • nova: Only Nova computing nodes are being created for etcd, master and worker nodes, assuming the nodes get public IPs assigned.
  • neutron: A private Neutron network is being created with master/worker nodes exposed via floating IPs connected to an etcd instance via an internal network.

Replace <flavor> with either option in the following commands.

Please refer to the variable Documentation documentation for flavor specific properties which can be overriden in the config.tfvars file.

Note: If you are using Nova and experience networking issues between pods on different hosts, you might need to disable spoofing protection.

Installation

Ensure all prerequsities are met.

To create the necessary configuration in the build/<name> folder, execute

$ make PLATFORM=openstack/<flavor> CLUSTER=<cluster-name> localconfig

To generate the Terraform plan, execute

$ make PLATFORM=openstack/<flavor> CLUSTER=<cluster-name> plan

To apply and create the cluster using Terraform execute

$ make PLATFORM=openstack/<flavor> CLUSTER=<cluster-name> apply

To destroy the cluster invoke

$ make PLATFORM=openstack/<flavor> CLUSTER=<cluster-name> destroy