ка ознакомиться с документацией Spark 2.3 о том, как развертывать задания в кластере Kubernetes 1.9.3:http://spark.apache.org/docs/latest/running-on-kubernetes.html

Кластер Kubernetes 1.9.3 работает правильно на автономных серверах без ПО и был установлен сkubeadm, Следующая команда была использована для отправки задания (SparkPi пример работы):

/opt/spark/bin/spark-submit --master k8s://https://k8s-master:6443 --deploy-mode cluster --name spark-pi --class org.apache.spark.examples.SparkPi --conf spark.executor.instances=2 --conf spark.kubernetes.container.image=spark:v2.3.0 local:///opt/spark/examples/jars/spark-examples_2.11-2.3.0.jar 

Вот трассировка стека, которую мы все любим:

++ id -u
+ myuid=0
++ id -g
+ mygid=0
++ getent passwd 0
+ uidentry=root:x:0:0:root:/root:/bin/ash
+ '[' -z root:x:0:0:root:/root:/bin/ash ']'
+ SPARK_K8S_CMD=driver
+ '[' -z driver ']'
+ shift 1
+ SPARK_CLASSPATH=':/opt/spark/jars/*'
+ env
+ grep SPARK_JAVA_OPT_
+ sed 's/[^=]*=\(.*\)/\1/g'
+ readarray -t SPARK_JAVA_OPTS
+ '[' -n /opt/spark/examples/jars/spark-examples_2.11-2.3.0.jar:/opt/spark/examples/jars/spark-examples_2.11-2.3.0.jar ']'
+ SPARK_CLASSPATH=':/opt/spark/jars/*:/opt/spark/examples/jars/spark-examples_2.11-2.3.0.jar:/opt/spark/examples/jars/spark-examples_2.11-2.3.0.jar'
+ '[' -n '' ']'
+ case "$SPARK_K8S_CMD" in
+ CMD=(${JAVA_HOME}/bin/java "${SPARK_JAVA_OPTS[@]}" -cp "$SPARK_CLASSPATH" -Xms$SPARK_DRIVER_MEMORY -Xmx$SPARK_DRIVER_MEMORY -Dspark.driver.bindAddress=$SPARK_DRIVER_BIND_ADDRESS $SPARK_DRIVER_CLASS $SPARK_DRIVER_ARGS)
+ exec /sbin/tini -s -- /usr/lib/jvm/java-1.8-openjdk/bin/java -Dspark.kubernetes.driver.pod.name=spark-pi-b6f8a60df70a3b9d869c4e305518f43a-driver -Dspark.driver.port=7078 -Dspark.submit.deployMode=cluster -Dspark.master=k8s://https://k8s-master:6443 -Dspark.kubernetes.executor.podNamePrefix=spark-pi-b6f8a60df70a3b9d869c4e305518f43a -Dspark.driver.blockManager.port=7079 -Dspark.app.id=spark-7077ad8f86114551b0ae04ae63a74d5a -Dspark.driver.host=spark-pi-b6f8a60df70a3b9d869c4e305518f43a-driver-svc.default.svc -Dspark.app.name=spark-pi -Dspark.kubernetes.container.image=spark:v2.3.0 -Dspark.jars=/opt/spark/examples/jars/spark-examples_2.11-2.3.0.jar,/opt/spark/examples/jars/spark-examples_2.11-2.3.0.jar -Dspark.executor.instances=2 -cp ':/opt/spark/jars/*:/opt/spark/examples/jars/spark-examples_2.11-2.3.0.jar:/opt/spark/examples/jars/spark-examples_2.11-2.3.0.jar' -Xms1g -Xmx1g -Dspark.driver.bindAddress=10.244.1.17 org.apache.spark.examples.SparkPi
2018-03-07 12:39:35 INFO  SparkContext:54 - Running Spark version 2.3.0
2018-03-07 12:39:36 WARN  NativeCodeLoader:62 - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
2018-03-07 12:39:36 INFO  SparkContext:54 - Submitted application: Spark Pi
2018-03-07 12:39:36 INFO  SecurityManager:54 - Changing view acls to: root
2018-03-07 12:39:36 INFO  SecurityManager:54 - Changing modify acls to: root
2018-03-07 12:39:36 INFO  SecurityManager:54 - Changing view acls groups to: 
2018-03-07 12:39:36 INFO  SecurityManager:54 - Changing modify acls groups to: 
2018-03-07 12:39:36 INFO  SecurityManager:54 - SecurityManager: authentication disabled; ui acls disabled; users  with view permissions: Set(root); groups with view permissions: Set(); users  with modify permissions: Set(root); groups with modify permissions: Set()
2018-03-07 12:39:36 INFO  Utils:54 - Successfully started service 'sparkDriver' on port 7078.
2018-03-07 12:39:36 INFO  SparkEnv:54 - Registering MapOutputTracker
2018-03-07 12:39:36 INFO  SparkEnv:54 - Registering BlockManagerMaster
2018-03-07 12:39:36 INFO  BlockManagerMasterEndpoint:54 - Using org.apache.spark.storage.DefaultTopologyMapper for getting topology information
2018-03-07 12:39:36 INFO  BlockManagerMasterEndpoint:54 - BlockManagerMasterEndpoint up
2018-03-07 12:39:36 INFO  DiskBlockManager:54 - Created local directory at /tmp/blockmgr-7f5370ad-b495-4943-ad75-285b7ead3e5b
2018-03-07 12:39:36 INFO  MemoryStore:54 - MemoryStore started with capacity 408.9 MB
2018-03-07 12:39:36 INFO  SparkEnv:54 - Registering OutputCommitCoordinator
2018-03-07 12:39:36 INFO  log:192 - Logging initialized @1936ms
2018-03-07 12:39:36 INFO  Server:346 - jetty-9.3.z-SNAPSHOT
2018-03-07 12:39:36 INFO  Server:414 - Started @2019ms
2018-03-07 12:39:36 INFO  AbstractConnector:278 - Started ServerConnector@4215838f{HTTP/1.1,[http/1.1]}{0.0.0.0:4040}
2018-03-07 12:39:36 INFO  Utils:54 - Successfully started service 'SparkUI' on port 4040.
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@5b6813df{/jobs,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@495083a0{/jobs/json,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@5fd62371{/jobs/job,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@2b62442c{/jobs/job/json,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@66629f63{/stages,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@841e575{/stages/json,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@27a5328c{/stages/stage,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@6b5966e1{/stages/stage/json,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@65e61854{/stages/pool,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@1568159{/stages/pool/json,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@4fcee388{/storage,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@6f80fafe{/storage/json,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@3af17be2{/storage/rdd,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@f9879ac{/storage/rdd/json,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@37f21974{/environment,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@5f4d427e{/environment/json,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@6e521c1e{/executors,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@224b4d61{/executors/json,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@5d5d9e5{/executors/threadDump,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@303e3593{/executors/threadDump/json,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@4ef27d66{/static,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@62dae245{/,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@4b6579e8{/api,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@3954d008{/jobs/job/kill,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  ContextHandler:781 - Started o.s.j.s.ServletContextHandler@2f94c4db{/stages/stage/kill,null,AVAILABLE,@Spark}
2018-03-07 12:39:36 INFO  SparkUI:54 - Bound SparkUI to 0.0.0.0, and started at http://spark-pi-b6f8a60df70a3b9d869c4e305518f43a-driver-svc.default.svc:4040
2018-03-07 12:39:36 INFO  SparkContext:54 - Added JAR /opt/spark/examples/jars/spark-examples_2.11-2.3.0.jar at spark://spark-pi-b6f8a60df70a3b9d869c4e305518f43a-driver-svc.default.svc:7078/jars/spark-examples_2.11-2.3.0.jar with timestamp 1520426376949
2018-03-07 12:39:37 WARN  KubernetesClusterManager:66 - The executor's init-container config map is not specified. Executors will therefore not attempt to fetch remote or submitted dependencies.
2018-03-07 12:39:37 WARN  KubernetesClusterManager:66 - The executor's init-container config map key is not specified. Executors will therefore not attempt to fetch remote or submitted dependencies.
2018-03-07 12:39:42 ERROR SparkContext:91 - Error initializing SparkContext.
org.apache.spark.SparkException: External scheduler cannot be instantiated
    at org.apache.spark.SparkContext$.org$apache$spark$SparkContext$createTaskScheduler(SparkContext.scala:2747)
    at org.apache.spark.SparkContext.<init>(SparkContext.scala:492)
    at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2486)
    at org.apache.spark.sql.SparkSession$Builder$anonfun$7.apply(SparkSession.scala:930)
    at org.apache.spark.sql.SparkSession$Builder$anonfun$7.apply(SparkSession.scala:921)
    at scala.Option.getOrElse(Option.scala:121)
    at org.apache.spark.sql.SparkSession$Builder.getOrCreate(SparkSession.scala:921)
    at org.apache.spark.examples.SparkPi$.main(SparkPi.scala:31)
    at org.apache.spark.examples.SparkPi.main(SparkPi.scala)
Caused by: io.fabric8.kubernetes.client.KubernetesClientException: Operation: [get]  for kind: [Pod]  with name: [spark-pi-b6f8a60df70a3b9d869c4e305518f43a-driver]  in namespace: [default]  failed.
    at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:62)
    at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:71)
    at io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:228)
    at io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:184)
    at org.apache.spark.scheduler.cluster.k8s.KubernetesClusterSchedulerBackend.<init>(KubernetesClusterSchedulerBackend.scala:70)
    at org.apache.spark.scheduler.cluster.k8s.KubernetesClusterManager.createSchedulerBackend(KubernetesClusterManager.scala:120)
    at org.apache.spark.SparkContext$.org$apache$spark$SparkContext$createTaskScheduler(SparkContext.scala:2741)
    ... 8 more
Caused by: java.net.UnknownHostException: kubernetes.default.svc: Try again
    at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
    at java.net.InetAddress.getAllByName0(InetAddress.java:1276)
    at java.net.InetAddress.getAllByName(InetAddress.java:1192)
    at java.net.InetAddress.getAllByName(InetAddress.java:1126)
    at okhttp3.Dns$1.lookup(Dns.java:39)
    at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:171)
    at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.java:137)
    at okhttp3.internal.connection.RouteSelector.next(RouteSelector.java:82)
    at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:171)
    at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:121)
    at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:100)
    at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
    at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
    at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:120)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
    at io.fabric8.kubernetes.client.utils.HttpClientUtils$2.intercept(HttpClientUtils.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
    at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:185)
    at okhttp3.RealCall.execute(RealCall.java:69)
    at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:377)
    at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:343)
    at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:312)
    at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:295)
    at io.fabric8.kubernetes.client.dsl.base.BaseOperation.handleGet(BaseOperation.java:783)
    at io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:217)
    ... 12 more
2018-03-07 12:39:42 INFO  AbstractConnector:318 - Stopped Spark@4215838f{HTTP/1.1,[http/1.1]}{0.0.0.0:4040}
2018-03-07 12:39:42 INFO  SparkUI:54 - Stopped Spark web UI at http://spark-pi-b6f8a60df70a3b9d869c4e305518f43a-driver-svc.default.svc:4040
2018-03-07 12:39:42 INFO  MapOutputTrackerMasterEndpoint:54 - MapOutputTrackerMasterEndpoint stopped!
2018-03-07 12:39:42 INFO  MemoryStore:54 - MemoryStore cleared
2018-03-07 12:39:42 INFO  BlockManager:54 - BlockManager stopped
2018-03-07 12:39:42 INFO  BlockManagerMaster:54 - BlockManagerMaster stopped
2018-03-07 12:39:42 WARN  MetricsSystem:66 - Stopping a MetricsSystem that is not running
2018-03-07 12:39:42 INFO  OutputCommitCoordinator$OutputCommitCoordinatorEndpoint:54 - OutputCommitCoordinator stopped!
2018-03-07 12:39:42 INFO  SparkContext:54 - Successfully stopped SparkContext
Exception in thread "main" org.apache.spark.SparkException: External scheduler cannot be instantiated
    at org.apache.spark.SparkContext$.org$apache$spark$SparkContext$createTaskScheduler(SparkContext.scala:2747)
    at org.apache.spark.SparkContext.<init>(SparkContext.scala:492)
    at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2486)
    at org.apache.spark.sql.SparkSession$Builder$anonfun$7.apply(SparkSession.scala:930)
    at org.apache.spark.sql.SparkSession$Builder$anonfun$7.apply(SparkSession.scala:921)
    at scala.Option.getOrElse(Option.scala:121)
    at org.apache.spark.sql.SparkSession$Builder.getOrCreate(SparkSession.scala:921)
    at org.apache.spark.examples.SparkPi$.main(SparkPi.scala:31)
    at org.apache.spark.examples.SparkPi.main(SparkPi.scala)
Caused by: io.fabric8.kubernetes.client.KubernetesClientException: Operation: [get]  for kind: [Pod]  with name: [spark-pi-b6f8a60df70a3b9d869c4e305518f43a-driver]  in namespace: [default]  failed.
    at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:62)
    at io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:71)
    at io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:228)
    at io.fabric8.kubernetes.client.dsl.base.BaseOperation.get(BaseOperation.java:184)
    at org.apache.spark.scheduler.cluster.k8s.KubernetesClusterSchedulerBackend.<init>(KubernetesClusterSchedulerBackend.scala:70)
    at org.apache.spark.scheduler.cluster.k8s.KubernetesClusterManager.createSchedulerBackend(KubernetesClusterManager.scala:120)
    at org.apache.spark.SparkContext$.org$apache$spark$SparkContext$createTaskScheduler(SparkContext.scala:2741)
    ... 8 more
Caused by: java.net.UnknownHostException: kubernetes.default.svc: Try again
    at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
    at java.net.InetAddress.getAllByName0(InetAddress.java:1276)
    at java.net.InetAddress.getAllByName(InetAddress.java:1192)
    at java.net.InetAddress.getAllByName(InetAddress.java:1126)
    at okhttp3.Dns$1.lookup(Dns.java:39)
    at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:171)
    at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.java:137)
    at okhttp3.internal.connection.RouteSelector.next(RouteSelector.java:82)
    at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:171)
    at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:121)
    at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:100)
    at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
    at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
    at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:120)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
    at io.fabric8.kubernetes.client.utils.HttpClientUtils$2.intercept(HttpClientUtils.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:92)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:67)
    at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:185)
    at okhttp3.RealCall.execute(RealCall.java:69)
    at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:377)
    at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleResponse(OperationSupport.java:343)
    at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:312)
    at io.fabric8.kubernetes.client.dsl.base.OperationSupport.handleGet(OperationSupport.java:295)
    at io.fabric8.kubernetes.client.dsl.base.BaseOperation.handleGet(BaseOperation.java:783)
    at io.fabric8.kubernetes.client.dsl.base.BaseOperation.getMandatory(BaseOperation.java:217)
    ... 12 more
2018-03-07 12:39:42 INFO  ShutdownHookManager:54 - Shutdown hook called
2018-03-07 12:39:42 INFO  ShutdownHookManager:54 - Deleting directory /tmp/spark-64fe7ad8-669f-4591-a3f6-67440d450a44

Таким образом, очевидно, что бэкэнд-планировщик Kubernetes не может связаться со стручком, потому что он не может решитьkubernetes.default.svc, Хм .. почему?

Я также настроил RBAC сspark учетная запись службы, как указано в документации, но возникает та же проблема. (также пробовал в другом пространстве имен, та же проблема)

Вот логи отkube-dns:

I0306 16:04:04.170889       1 dns.go:555] Could not find endpoints for service "spark-pi-b9e8b4c66fe83c4d94a8d46abc2ee8f5-driver-svc" in namespace "default". DNS records will be created once endpoints show up.
I0306 16:04:29.751201       1 dns.go:555] Could not find endpoints for service "spark-pi-0665ad323820371cb215063987a31e05-driver-svc" in namespace "default". DNS records will be created once endpoints show up.
I0306 16:06:26.414146       1 dns.go:555] Could not find endpoints for service "spark-pi-2bf24282e8033fa9a59098616323e267-driver-svc" in namespace "default". DNS records will be created once endpoints show up.
I0307 08:16:17.404971       1 dns.go:555] Could not find endpoints for service "spark-pi-3887031e031732108711154b2ec57d28-driver-svc" in namespace "default". DNS records will be created once endpoints show up.
I0307 08:17:11.682218       1 dns.go:555] Could not find endpoints for service "spark-pi-3d84127226393fc99e2fe035db56bfb5-driver-svc" in namespace "default". DNS records will be created once endpoints show up. 

Я действительно не могу понять, почему появляются эти ошибки.