feat: print complete member info in etcd members

Fixes: #3487

Example output:

```
NODE       ID                 HOSTNAME                 PEERS                   CLIENTS
10.5.0.2   c3d3020cf75b8728   talos-default-master-1   https://10.5.0.2:2380   https://10.5.0.2:2379
```

Signed-off-by: Artem Chernyshev <artem.0xD2@gmail.com>

api/machine/machine.proto

@@ -791,11 +791,28 @@ message EtcdForfeitLeadershipResponse {
 message EtcdMemberListRequest {
   bool query_local = 1;
 }
-message EtcdMemberList {
+
+// EtcdMember describes a single etcd member.
+message EtcdMember {
+  // member ID.
+  uint64 id = 2;
+  // human-readable name of the member.
+  string hostname = 3;
+  // the list of URLs the member exposes to clients for communication.
+  repeated string peer_urls = 4;
+  // the list of URLs the member exposes to the cluster for communication.
+  repeated string client_urls = 5;
+}
+
+// EtcdMembers contains the list of members registered on the host.
+message EtcdMembers {
   common.Metadata metadata = 1;
-  repeated string members = 2;
+  // list of member hostnames.
+  repeated string legacy_members = 2;
+  // the list of etcd members registered on the node.
+  repeated EtcdMember members = 3;
 }
-message EtcdMemberListResponse { repeated EtcdMemberList messages = 1; }
+message EtcdMemberListResponse { repeated EtcdMembers messages = 1; }
 
 message EtcdSnapshotRequest {}
 

cmd/talosctl/cmd/talos/etcd.go

@@ -10,6 +10,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"strconv"
 	"strings"
 	"sync"
 	"text/tabwriter"
@@ -88,7 +89,7 @@ var etcdMemberListCmd = &cobra.Command{
 
 			w := tabwriter.NewWriter(os.Stdout, 0, 0, 3, ' ', 0)
 			node := ""
-			pattern := "%s\t"
+			pattern := "%s\t%s\t%s\t%s\n"
 
 			for i, message := range response.Messages {
 				if message.Metadata != nil && message.Metadata.Hostname != "" {
@@ -99,22 +100,28 @@ var etcdMemberListCmd = &cobra.Command{
 					continue
 				}
 
-				if i == 0 {
+				for _, member := range message.Members {
+					if i == 0 {
+						if node != "" {
+							fmt.Fprintln(w, "NODE\tID\tHOSTNAME\tPEER URLS\tCLIENT URLS")
+							pattern = "%s\t" + pattern
+						} else {
+							fmt.Fprintln(w, "ID\tHOSTNAME\tPEER URLS\tCLIENT URLS")
+						}
+					}
+
+					args := []interface{}{
+						strconv.FormatUint(member.Id, 16),
+						member.Hostname,
+						strings.Join(member.PeerUrls, ","),
+						strings.Join(member.ClientUrls, ","),
+					}
 					if node != "" {
-						fmt.Fprintln(w, "NODE\tMEMBERS")
-						pattern = "%s\t%s\n"
-					} else {
-						fmt.Fprintln(w, "MEMBERS")
+						args = append([]interface{}{node}, args...)
 					}
-				}
 
-				args := []interface{}{strings.Join(message.Members, ",")}
-				if node != "" {
-					args = append([]interface{}{node}, args...)
+					fmt.Fprintf(w, pattern, args...)
 				}
-
-				fmt.Fprintf(w, pattern, args...)
-
 			}
 
 			return w.Flush()

internal/app/machined/internal/server/v1alpha1/v1alpha1_server.go

@@ -1698,16 +1698,27 @@ func (s *Server) EtcdMemberList(ctx context.Context, in *machine.EtcdMemberListR
 		return nil, err
 	}
 
-	members := make([]string, 0, len(resp.Members))
+	members := make([]*machine.EtcdMember, 0, len(resp.Members))
+	legacyMembers := make([]string, 0, len(resp.Members))
 
 	for _, member := range resp.Members {
-		members = append(members, member.GetName())
+		members = append(members,
+			&machine.EtcdMember{
+				Id:         member.GetID(),
+				Hostname:   member.GetName(),
+				PeerUrls:   member.GetPeerURLs(),
+				ClientUrls: member.GetClientURLs(),
+			},
+		)
+
+		legacyMembers = append(legacyMembers, member.GetName())
 	}
 
 	reply = &machine.EtcdMemberListResponse{
-		Messages: []*machine.EtcdMemberList{
+		Messages: []*machine.EtcdMembers{
 			{
-				Members: members,
+				LegacyMembers: legacyMembers,
+				Members:       members,
 			},
 		},
 	}