ROUTING MESH - Exibição do Node na consulta com service ps id

Foi informado nesta aula que quando chamamos uma URL via IP de cada vm com a porta 8080 ao consultar os comandos abaixo conseguiríamos ver em qual node estaria rodando aquela aplicação no momento.

docker node ls
docker service ps Numero_do_ID

Porém quando faço somente retonar o node vm1

docker@vm1:~$ docker node ls
ID                            HOSTNAME            STATUS              AVAILABILITY        MANAGER STATUS      ENGINE VERSION
jusnm02908xj7fiaxk06uaagf *   vm1                 Ready               Active              Leader              19.03.5
wm7739ufr4h6bt8aonjci12gv     vm2                 Ready               Active                                  19.03.5
qc3m8rffki6acvj8ljzfqandk     vm3                 Ready               Active                                  19.03.5
docker@vm1:~$
docker@vm1:~$
docker@vm1:~$ docker service ls
ID                  NAME                MODE                REPLICAS            IMAGE                          PORTS
4myiad3rebgu        nostalgic_bose      replicated          1/1                 aluracursos/barbearia:latest   *:8080->3000/tcp
docker@vm1:~$
docker@vm1:~$
docker@vm1:~$ docker service ps 4my
ID                  NAME                IMAGE                          NODE                DESIRED STATE       CURRENT STATE            ERROR               PORTS
dm1vesatt37d        nostalgic_bose.1    aluracursos/barbearia:latest   vm1                 Running             Running 46 minutes ago
docker@vm1:~$
docker@vm1:~$
docker@vm1:~$ docker service ls
ID                  NAME                MODE                REPLICAS            IMAGE                          PORTS
4myiad3rebgu        nostalgic_bose      replicated          1/1                 aluracursos/barbearia:latest   *:8080->3000/tcp
docker@vm1:~$ docker service ps 4my
ID                  NAME                IMAGE                          NODE                DESIRED STATE       CURRENT STATE            ERROR               PORTS
dm1vesatt37d        nostalgic_bose.1    aluracursos/barbearia:latest   vm1                 Running             Running 47 minutes ago
docker@vm1:~$ docker service ls
ID                  NAME                MODE                REPLICAS            IMAGE                          PORTS
4myiad3rebgu        nostalgic_bose      replicated          1/1                 aluracursos/barbearia:latest   *:8080->3000/tcp
docker@vm1:~$ docker service ps 4my
ID                  NAME                IMAGE                          NODE                DESIRED STATE       CURRENT STATE            ERROR               PORTS
dm1vesatt37d        nostalgic_bose.1    aluracursos/barbearia:latest   vm1                 Running             Running 47 minutes ago
docker@vm1:~$ docker service ps 4my
ID                  NAME                IMAGE                          NODE                DESIRED STATE       CURRENT STATE            ERROR               PORTS
dm1vesatt37d        nostalgic_bose.1    aluracursos/barbearia:latest   vm1                 Running             Running 48 minutes ago
docker@vm1:~$
docker@vm1:~$
docker@vm1:~$
docker@vm1:~$ docker service ls
ID                  NAME                MODE                REPLICAS            IMAGE                          PORTS
4myiad3rebgu        nostalgic_bose      replicated          1/1                 aluracursos/barbearia:latest   *:8080->3000/tcp
docker@vm1:~$ docker service ps 4my
ID                  NAME                IMAGE                          NODE                DESIRED STATE       CURRENT STATE               ERROR               PORTS
dm1vesatt37d        nostalgic_bose.1    aluracursos/barbearia:latest   vm1                 Running             Running about an hour ago
docker@vm1:~$