Add net.host.name and net.host.ip to rpc server (#2447)

semantic_conventions/trace/rpc.yaml

@@ -60,6 +60,16 @@ groups:
           - net.peer.ip
           - net.peer.name
       - include: network
+
+  - id: rpc.server
+    prefix: rpc
+    extends: rpc
+    span_kind: server
+    brief: 'Semantic Convention for RPC server spans'
+    attributes:
+      - ref: net.host.name
+      - ref: net.host.ip
+
   - id: rpc.grpc
     prefix: rpc.grpc
     extends: rpc
@@ -121,6 +131,7 @@ groups:
               value: 16
         required: always
         brief: "The [numeric status code](https://github.com/grpc/grpc/blob/v1.33.2/doc/statuscodes.md) of the gRPC request."
+
   - id: rpc.jsonrpc
     prefix: rpc.jsonrpc
     extends: rpc
@@ -155,6 +166,7 @@ groups:
         note: >
           This is always required for jsonrpc. See the note in the general
           RPC conventions for more information.
+
   - id: rpc.message
     prefix: "message"  # TODO: Change the prefix to rpc.message?
     type: event

specification/trace/semantic_conventions/rpc.md

@@ -11,8 +11,9 @@ This document defines how to describe remote procedure calls
 
 - [Common remote procedure call conventions](#common-remote-procedure-call-conventions)
   * [Span name](#span-name)
-  * [Attributes](#attributes)
+  * [Common attributes](#common-attributes)
     + [Service name](#service-name)
+  * [Server attributes](#server-attributes)
   * [Events](#events)
   * [Distinction from HTTP spans](#distinction-from-http-spans)
 - [gRPC](#grpc)
@@ -51,7 +52,7 @@ Examples of span names:
   `MyServiceReference.ICalculator/Add` reported by the client for .NET WCF calls
 - `MyServiceWithNoPackage/theMethod`
 
-### Attributes
+### Common attributes
 
 <!-- semconv rpc -->
 | Attribute  | Type | Description  | Examples  | Required |
@@ -105,6 +106,15 @@ Generally, a user SHOULD NOT set `peer.service` to a fully qualified RPC service
 [`service.name`]: ../../resource/semantic_conventions/README.md#service
 [`peer.service`]: span-general.md#general-remote-service-attributes
 
+### Server attributes
+
+<!-- semconv rpc.server -->
+| Attribute  | Type | Description  | Examples  | Required |
+|---|---|---|---|---|
+| [`net.host.ip`](span-general.md) | string | Like `net.peer.ip` but for the host IP. Useful in case of a multi-IP host. | `192.168.0.1` | No |
+| [`net.host.name`](span-general.md) | string | Local hostname or similar, see note below. | `localhost` | No |
+<!-- endsemconv -->
+
 ### Events
 
 In the lifetime of an RPC stream, an event for each message sent/received on