[float]
[[breaking_80_cluster_changes]]
=== Cluster changes

//NOTE: The notable-breaking-changes tagged regions are re-used in the
//Installation and Upgrade Guide

//tag::notable-breaking-changes[]

// end::notable-breaking-changes[]

.The voting configuration exclusions API endpoint has changed.
[%collapsible]
====
*Details* +
The `POST /_cluster/voting_config_exclusions/{node_filter}` API has been
removed in favour of `POST /_cluster/voting_config_exclusions?node_names=...`
and `POST /_cluster/voting_config_exclusions?node_ids=...` which allow you to
specify the names or IDs of the nodes to exclude.

*Impact* +
Use `POST /_cluster/voting_config_exclusions?node_ids=...` and specify the nodes
to exclude instead of using a node filter. Requests submitted to the
`/_cluster/voting_config_exclusions/{node_filter}` endpoint will return an
error.
====