[8.17] Fix broken anchors (#119802)

docs/reference/modules/discovery/publishing.asciidoc

@@ -58,3 +58,16 @@ speed of the storage on each master-eligible node, as well as the reliability
 and latency of the network interconnections between all nodes in the cluster.
 You must therefore ensure that the storage and networking available to the
 nodes in your cluster are good enough to meet your performance goals.
+
+[[dangling-index]]
+==== Dangling indices
+
+When a node joins the cluster, if it finds any shards stored in its local
+data directory that do not already exist in the cluster state, it will consider
+those shards to belong to a "dangling" index. You can list, import or
+delete dangling indices using the <<dangling-indices-api,Dangling indices
+API>>.
+
+NOTE: The API cannot offer any guarantees as to whether the imported data
+truly represents the latest state of the data when the index was still part
+of the cluster.

docs/reference/modules/gateway.asciidoc

@@ -1,6 +1,7 @@
 [[modules-gateway]]
 === Local gateway settings
 
+[[dangling-indices]]
 The local gateway stores the cluster state and shard data across full
 cluster restarts.
 

docs/reference/modules/network.asciidoc

@@ -286,3 +286,22 @@ include::remote-cluster-network.asciidoc[]
 include::network/tracers.asciidoc[]
 
 include::network/threading.asciidoc[]
+
+[[tcp-readiness-port]]
+==== TCP readiness port
+
+preview::[]
+
+If configured, a node can open a TCP port when the node is in a ready state. A node is deemed
+ready when it has successfully joined a cluster. In a single node configuration, the node is
+said to be ready, when it's able to accept requests.
+
+To enable the readiness TCP port, use the `readiness.port` setting. The readiness service will bind to
+all host addresses.
+
+If the node leaves the cluster, or the <<put-shutdown,Shutdown API>> is used to mark the node
+for shutdown, the readiness port is immediately closed.
+
+A successful connection to the readiness TCP port signals that the {es} node is ready. When a client
+connects to the readiness port, the server simply terminates the socket connection. No data is sent back
+to the client. If a client cannot connect to the readiness port, the node is not ready.

docs/reference/modules/node.asciidoc

@@ -37,6 +37,8 @@ set `node.roles`, the node is assigned the following roles:
 * `remote_cluster_client`
 * `transform`
 
+[[coordinating-only-node]]If you leave `node.roles` unset, then the node is considered to be a <<coordinating-only-node-role,coordinating only node>>.
+
 [IMPORTANT]
 ====
 If you set `node.roles`, ensure you specify every node role your cluster needs.