# Placement group configuration Placement groups can be configured through a set of key/value configuration options. See [How to use placement groups](https://canonical.com/lxd/docs/latest/howto/cluster_placement_groups/index.html.md#cluster-placement-groups) for instructions on how to create and manage placement groups. The key/value configuration is namespaced. The following options are available: - [Placement group options](#placement-group-config) ## Placement group options Placement groups require two configuration keys to control instance placement behavior across cluster members. `policy` Instance placement policy [](#placement-group-placement-group:policy) | **Key:** | `policy` | |---------------|------------| | **Type:** | string | | **Required:** | yes | Determines whether instances are spread across cluster members or compacted onto the same cluster member(s). Possible values are `spread` and `compact`. See [Automatic placement of instances](https://canonical.com/lxd/docs/latest/explanation/clusters/index.html.md#clustering-instance-placement) for more information. `rigor` Enforcement level of the placement policy [](#placement-group-placement-group:rigor) | **Key:** | `rigor` | |---------------|-----------| | **Type:** | string | | **Required:** | yes | Determines whether the policy is strictly enforced or allows fallback. Possible values are `strict` and `permissive`. See [Automatic placement of instances](https://canonical.com/lxd/docs/latest/explanation/clusters/index.html.md#clustering-instance-placement) for more information. `user.*` Free form user key/value storage [](#placement-group-placement-group:user.*) | **Key:** | `user.*` | |-------------|------------| | **Type:** | string | User keys can be used in search. ## Related topics How-to guides: - [Clustering](https://canonical.com/lxd/docs/latest/clustering/index.html.md#clustering) Explanation: - [Clusters](https://canonical.com/lxd/docs/latest/explanation/clusters/index.html.md#exp-clusters)