A "Layer" is a particular service that forms part of the infrastructure for
a set of applications. Some layers are application servers and others are
pure infrastructure, like MySQL servers or load balancers.
Although the AWS API only has one type called "Layer", it actually has
a number of different "soft" types that each have slightly different
validation rules and extra properties that are packed into the Attributes
map.
To make the validation rule differences explicit in Terraform, and to make
the Terraform structure more closely resemble the OpsWorks UI than its
API, we use a separate resource type per layer type, with the common code
factored out into a shared struct type.
"Stack" is the root concept in OpsWorks, and acts as a container for a number
of different "layers" that each provide some service for an application.
A stack isn't very interesting on its own, but it needs to be created before
any layers can be created.
Here we add an OpsWorks client instance to the central client bundle and
establish a new documentation section, both of which will be fleshed out in
subsequent commits that add some OpsWorks resources.
There isn't any precedent for abbreviating words in the interpolation
function names, and it may not be clear to all users what "enc" and "dec"
are short for, so instead we'll prefer to spell out the whole words for
improved readability.
An earlier version of the provider implementation accepted
key_material_file instead of key_material. This was updated in the
resource-specific docs but not in this provider-wide example.
The existing 404 page didn't quite fit in with the style of the rest of the site.
Fixes this by adding a layout value for use during rendering, and adds some nicer markup.
* 'master' of github.com:hashicorp/terraform:
Update CHANGELOG.md
Changing the ElastiCache Cluster configuration_engine to be on the cluster, not on the cache nodes
Adding configuration endpoint to the elasticache cluster nodes
Robert Roland