Cluster member configuration

Each cluster member has its own key/value configuration with the following supported namespaces:

user (free form key/value for user metadata)
scheduler (options related to how the member is automatically targeted by the cluster)

The following keys are currently supported:

`scheduler.instance`

Controls how instances are scheduled to run on this member

Key:
scheduler.instance

Type:
string

Default:
all

Possible values are all, manual, and group. See Automatic placement of instances for more information.

Free form user key/value storage

Key:
user.*

Type:
string

User keys can be used in search.