Minikube lenses example bundled in the repo doesn't work

[ValentinFlorea]

I'm trying to run Lenses in Minikube. After following the instructions https://github.com/lensesio/lenses-docker/tree/master/_examples I got no error and both pods are running.

The problem is that no http listener is running on the lenses pod (getting a 404 response in browser).

kubectl logs -f pods/lenses` produces:

2020-01-06 13:54:01,060 INFO [k.u.Log4jControllerRegistration$:31] Registered kafka:type=kafka.Log4jController MBean
2020-01-06 13:54:01,089 INFO [k.z.ZooKeeperClient:66] [ZooKeeperClient] Initializing a new session to kafka:2181/.
2020-01-06 13:54:01,118 INFO [k.z.ZooKeeperClient:66] [ZooKeeperClient] Waiting until connected.
2020-01-06 13:54:01,139 INFO [k.z.ZooKeeperClient:66] [ZooKeeperClient] Connected.
2020-01-06 13:54:01,168 INFO [i.l.r.H2ConnectionBuilder$:27] Setting the local storage to [/data/storage]
2020-01-06 13:54:01,168 INFO [i.l.r.H2ConnectionBuilder$:27] Setting the local storage to [/data/storage]
2020-01-06 13:54:01,169 INFO [i.l.r.H2ConnectionBuilder$:43] Opening the storage to lensesdb...
2020-01-06 13:54:02,052 INFO [i.l.r.H2ConnectionBuilder$:27] Setting the local storage to [/data/storage]
2020-01-06 13:54:02,053 INFO [i.l.r.H2ConnectionBuilder$:43] Opening the storage to lensesdb...
2020-01-06 13:54:02,081 INFO [i.l.r.H2ConnectionBuilder$:27] Setting the local storage to [/data/storage]
2020-01-06 13:54:02,082 INFO [i.l.r.H2ConnectionBuilder$:43] Opening the storage to lensesdb...
2020-01-06 13:54:04,616 INFO [c.z.h.HikariDataSource:110] HikariPool-1 - Starting...
2020-01-06 13:54:04,633 INFO [c.z.h.HikariDataSource:123] HikariPool-1 - Start completed.
2020-01-06 13:54:05,043 INFO [i.l.c.k.ConnectClustersTopicValidation$:25] Validating Connect cluster topics...
2020-01-06 13:56:05,448 ERROR [c.l.k.l.Main$:159] Uncaught exception on Thread[main,5,main]
java.util.concurrent.TimeoutException: null
at org.apache.kafka.common.internals.KafkaFutureImpl$SingleWaiter.await(KafkaFutureImpl.java:108)
at org.apache.kafka.common.internals.KafkaFutureImpl.get(KafkaFutureImpl.java:274)
at io.lenses.core.kafka.ConnectClustersTopicValidation$.apply(ConnectClustersTopicValidation.scala:33)
at com.landoop.kafka.lenses.Main$.$anonfun$new$2(Main.scala:225)
at scala.runtime.java8.JFunction0$mcV$sp.apply(JFunction0$mcV$sp.java:23)
at io.lenses.domain.logging.MetricsSupport.timed(MetricsSupport.scala:18)
at io.lenses.domain.logging.MetricsSupport.timed$(MetricsSupport.scala:16)
at com.landoop.kafka.lenses.Main$.timed(Main.scala:148)
at com.landoop.kafka.lenses.Main$.delayedEndpoint$com$landoop$kafka$lenses$Main$1(Main.scala:224)
at com.landoop.kafka.lenses.Main$delayedInit$body.apply(Main.scala:148)
at scala.Function0.apply$mcV$sp(Function0.scala:39)
at scala.Function0.apply$mcV$sp$(Function0.scala:39)
at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:17)
at scala.App.$anonfun$main$1$adapted(App.scala:80)
at scala.collection.immutable.List.foreach(List.scala:392)
at scala.App.main(App.scala:80)
at scala.App.main$(App.scala:78)
at com.landoop.kafka.lenses.Main$.main(Main.scala:148)
at com.landoop.kafka.lenses.Main.main(Main.scala)

So it seems that Lenses cannot connect properly to the kafka pod (even though it seems to succeed connecting to the Zookeeper).

When I'm checking out the kubectl logs -f pods/kafkagroup I see that the pod services seem to start properly but then they restart evey few minutes

2020-01-06 13:53:09,856 INFO success: running-sample-data-telecom-italia entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2020-01-06 13:53:09,856 INFO success: schema-registry entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2020-01-06 13:53:09,856 INFO success: smoke-tests entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2020-01-06 13:53:09,856 INFO success: zookeeper entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2020-01-06 13:55:17,425 INFO exited: schema-registry (exit status 1; not expected)
2020-01-06 13:55:17,735 INFO spawned: 'schema-registry' with pid 2521
2020-01-06 13:55:19,161 INFO success: schema-registry entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2020-01-06 13:56:22,718 INFO exited: running-sample-data-ais (exit status 1; not expected)
2020-01-06 13:56:22,960 INFO exited: running-sample-data-taxis (exit status 1; not expected)
2020-01-06 13:56:28,951 INFO exited: running-sample-data-telecom-italia (exit status 1; not expected)
2020-01-06 13:57:22,719 INFO exited: schema-registry (exit status 1; not expected)
2020-01-06 13:57:22,723 INFO spawned: 'schema-registry' with pid 5805
2020-01-06 13:57:23,761 INFO success: schema-registry entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2020-01-06 13:58:10,014 INFO exited: logs-to-kafka (exit status 0; expected)
2020-01-06 13:59:27,411 INFO exited: schema-registry (exit status 1; not expected)
2020-01-06 13:59:27,479 INFO spawned: 'schema-registry' with pid 6729
2020-01-06 13:59:28,513 INFO success: schema-registry entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2020-01-06 13:59:34,563 INFO exited: connect-distributed (exit status 2; not expected)
2020-01-06 13:59:34,569 INFO spawned: 'connect-distributed' with pid 6761
2020-01-06 13:59:35,593 INFO success: connect-distributed entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)

Am I doing something wrong?