elasticsearch/docs/reference/migration/migrate_8_0/transport.asciidoc

[float]
[[breaking_80_transport_changes]]
=== Transport changes

//tag::notable-breaking-changes[]
.Several `tranport` settings have been replaced.
[%collapsible]
====
*Details* +
The following settings have been deprecated in 7.x and removed in 8.0. Each setting has a replacement
setting that was introduced in 6.7.

- `transport.tcp.port` replaced by `transport.port`
- `transport.tcp.compress` replaced by `transport.compress`
- `transport.tcp.connect_timeout` replaced by `transport.connect_timeout`
- `transport.tcp_no_delay` replaced by `transport.tcp.no_delay`
- `transport.profiles.profile_name.tcp_no_delay` replaced by `transport.profiles.profile_name.tcp.no_delay`
- `transport.profiles.profile_name.tcp_keep_alive` replaced by `transport.profiles.profile_name.tcp.keep_alive`
- `transport.profiles.profile_name.reuse_address` replaced by `transport.profiles.profile_name.tcp.reuse_address`
- `transport.profiles.profile_name.send_buffer_size` replaced by `transport.profiles.profile_name.tcp.send_buffer_size`
- `transport.profiles.profile_name.receive_buffer_size` replaced by `transport.profiles.profile_name.tcp.receive_buffer_size`

*Impact* +
Use the replacement settings. Discontinue use of the removed settings.
Specifying the removed settings in `elasticsearch.yml` will result in an error
on startup.
====

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