Spark Cluster on docker swarm Worker web UI issue - apache-spark

Question

Hi I'm facing issue with start spark cluster on docker swarm
I've already created a few o clusters on docker swarm but right now I don't know why I couldn't reach worker UI on dedicated port .
I have a 3 physical host (what does mean on 3 docker swarm nodes)
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:58 INFO SecurityManager: Changing view acls to: 185
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:58 INFO SecurityManager: Changing modify acls to: 185
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:58 INFO SecurityManager: Changing view acls groups to:
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:58 INFO SecurityManager: Changing modify acls groups to:
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:58 INFO SecurityManager: SecurityManager: authentication disabled; ui acls disabled; users with view permissions: Set(185); groups with view permissions: Set(); users with modify permissions: Set(185); groups with modify permissions: Set()
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:58 INFO Utils: Successfully started service 'sparkWorker' on port 7000.
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:58 INFO Worker: Worker decommissioning not enabled.
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:59 INFO Worker: Starting Spark worker 10.0.2.148:7000 with 6 cores, 10.0 GiB RAM
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:59 INFO Worker: Running Spark version 3.2.1
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:59 INFO Worker: Spark home: /opt/spark
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:59 INFO ResourceUtils: ==============================================================
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:59 INFO ResourceUtils: No custom resources configured for spark.worker.
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:59 INFO ResourceUtils: ==============================================================
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:59 INFO Utils: Successfully started service 'WorkerUI' on port 8081.
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:59 INFO WorkerWebUI: Bound WorkerWebUI to 10.0.2.148, and started at http://10.242.130.225:8081
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:59 INFO Worker: Connecting to master spark-master:7077...
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:59 INFO TransportClientFactory: Successfully created connection to spark-master/10.0.2.144:7077 after 46 ms (0 ms spent in bootstraps)
spark_stack_spark-worker-1.0.u2qvp1swxp5g#test_host_a | 22/06/14 18:46:59 INFO Worker: Successfully registered with master spark://10.0.2.145:7077
gsi49cc8bevb spark_stack_spark-master global 1/1 new_spark-cluster:3.2.1 *:7077->7077/tcp, *:9090->8080/tcp
fiszfm8mgl2p spark_stack_spark-worker-1 global 1/1 new_spark-cluster:3.2.1 *:7001->7000/tcp, *:9091->8081/tcp
"Endpoint": {
"Spec": {
"Mode": "vip",
"Ports": [
{
"Protocol": "tcp",
"TargetPort": 7000,
"PublishedPort": 7001,
"PublishMode": "ingress"
},
{
"Protocol": "tcp",
"TargetPort": 8081,
"PublishedPort": 9091,
"PublishMode": "ingress"
}
]
},
"Ports": [
{
"Protocol": "tcp",
"TargetPort": 7000,
"PublishedPort": 7001,
"PublishMode": "ingress"
},
{
"Protocol": "tcp",
"TargetPort": 8081,
"PublishedPort": 9091,
"PublishMode": "ingress"
}
Worker web UI should be reach on 9091 within PUBLIC DNS as it was ported, but it couldn't be. why?
In the same way master web UI works as well.