Thanks again, Matthias! Putting -Djobmanager.rpc.address=$HOST and -Djobmanager.rpc.port=$PORT0 as params for appmaster.sh I see in tog they seem to transform in the correct values
-Djobmanager.rpc.address=10.0.23.35 -Djobmanager.rpc.port=31009 but a bit later the appmaster dies with this new error. it is unclear what address it is trying to bind, I added explicit params -Drest.bind-port=8081 and -Drest.port=8081 in case jobmanager.rpc.port was somehow interfering, but that didn't help. 2021-09-29 10:29:59.845 [main] INFO org.apache.flink.runtime.entrypoint.ClusterEntrypoint - Shutting MesosSessionClusterEntrypoint down with application status FAILED. Diagnostics java.net.BindException: Cannot assign requested address at java.base/sun.nio.ch.Net.bind0(Native Method) at java.base/sun.nio.ch.Net.bind(Unknown Source) at java.base/sun.nio.ch.Net.bind(Unknown Source) at java.base/sun.nio.ch.ServerSocketChannelImpl.bind(Unknown Source) at org.apache.flink.shaded.netty4.io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:134) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:550) at org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1334) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:506) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:491) at org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:973) at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel.bind(AbstractChannel.java:248) at org.apache.flink.shaded.netty4.io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:356) at org.apache.flink.shaded.netty4.io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164) at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472) at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500) at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) at org.apache.flink.shaded.netty4.io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at org.apache.flink.shaded.netty4.io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.base/java.lang.Thread.run(Unknown Source) . On Wed, Sep 29, 2021 at 2:36 AM Matthias Pohl <matth...@ververica.com> wrote: > The port has its separate configuration parameter jobmanager.rpc.port [1] > > [1] > https://ci.apache.org/projects/flink/flink-docs-master/docs/deployment/config/#jobmanager-rpc-port-1 > > On Wed, Sep 29, 2021 at 10:11 AM Javier Vegas <jve...@strava.com> wrote: > >> Matthias, thanks for the suggestion! I changed my jobmanager.rpc.address >> param from $HOSTNAME to $HOST:$PORT0 which in the log I see resolves >> properly to the host IP and port mapped to 8081 >> >> 2021-09-29 07:58:05.452 [main] INFO >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint - >> -Djobmanager.rpc.address=10.0.22.114:31894 >> >> which is very promising. But sadly a little bit later appmaster dies with >> this errror: >> >> 2021-09-29 07:58:05.648 [main] INFO >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint - Initializing >> cluster services. >> 2021-09-29 07:58:05.674 [main] INFO >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint - Shutting >> MesosSessionClusterEntrypoint down with application status FAILED. >> Diagnostics org.apache.flink.configurati >> on.IllegalConfigurationException: The configured hostname is not valid >> at >> org.apache.flink.util.NetUtils.unresolvedHostToNormalizedString(NetUtils.java:179) >> at >> org.apache.flink.util.NetUtils.unresolvedHostAndPortToNormalizedString(NetUtils.java:197) >> at >> org.apache.flink.runtime.clusterframework.BootstrapTools.startRemoteActorSystem(BootstrapTools.java:207) >> at >> org.apache.flink.runtime.clusterframework.BootstrapTools.startRemoteActorSystem(BootstrapTools.java:152) >> at >> org.apache.flink.runtime.rpc.akka.AkkaRpcServiceUtils$AkkaRpcServiceBuilder.createAndStart(AkkaRpcServiceUtils.java:370) >> at >> org.apache.flink.runtime.rpc.akka.AkkaRpcServiceUtils$AkkaRpcServiceBuilder.createAndStart(AkkaRpcServiceUtils.java:344) >> at >> org.apache.flink.runtime.rpc.akka.AkkaRpcServiceUtils.createRemoteRpcService(AkkaRpcServiceUtils.java:92) >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.initializeServices(ClusterEntrypoint.java:294) >> at >> org.apache.flink.mesos.entrypoint.MesosSessionClusterEntrypoint.initializeServices(MesosSessionClusterEntrypoint.java:61) >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runCluster(ClusterEntrypoint.java:239) >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.lambda$startCluster$1(ClusterEntrypoint.java:189) >> at java.base/java.security.AccessController.doPrivileged(Native Method) >> at java.base/javax.security.auth.Subject.doAs(Unknown Source) >> at >> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1762) >> at >> org.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:186) >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runClusterEntrypoint(ClusterEntrypoint.java:600) >> at >> org.apache.flink.mesos.entrypoint.MesosSessionClusterEntrypoint.main(MesosSessionClusterEntrypoint.java:114) >> Caused by: java.lang.IllegalArgumentException >> at >> org.apache.flink.util.Preconditions.checkArgument(Preconditions.java:122) >> at >> org.apache.flink.util.NetUtils.unresolvedHostToNormalizedString(NetUtils.java:177) >> ... 17 more >> . >> 2021-09-29 07:58:05.685 [main] ERROR >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint - Could not start >> cluster entrypoint MesosSessionClusterEntrypoint. >> org.apache.flink.runtime.entrypoint.ClusterEntrypointException: Failed to >> initialize the cluster entrypoint MesosSessionClusterEntrypoint. >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:212) >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runClusterEntrypoint(ClusterEntrypoint.java:600) >> at >> org.apache.flink.mesos.entrypoint.MesosSessionClusterEntrypoint.main(MesosSessionClusterEntrypoint.java:114) >> Caused by: org.apache.flink.configuration.IllegalConfigurationException: >> The configured hostname is not valid >> at >> org.apache.flink.util.NetUtils.unresolvedHostToNormalizedString(NetUtils.java:179) >> at >> org.apache.flink.util.NetUtils.unresolvedHostAndPortToNormalizedString(NetUtils.java:197) >> at >> org.apache.flink.runtime.clusterframework.BootstrapTools.startRemoteActorSystem(BootstrapTools.java:207) >> at >> org.apache.flink.runtime.clusterframework.BootstrapTools.startRemoteActorSystem(BootstrapTools.java:152) >> at >> org.apache.flink.runtime.rpc.akka.AkkaRpcServiceUtils$AkkaRpcServiceBuilder.createAndStart(AkkaRpcServiceUtils.java:370) >> at >> org.apache.flink.runtime.rpc.akka.AkkaRpcServiceUtils$AkkaRpcServiceBuilder.createAndStart(AkkaRpcServiceUtils.java:344) >> at >> org.apache.flink.runtime.rpc.akka.AkkaRpcServiceUtils.createRemoteRpcService(AkkaRpcServiceUtils.java:92) >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.initializeServices(ClusterEntrypoint.java:294) >> at >> org.apache.flink.mesos.entrypoint.MesosSessionClusterEntrypoint.initializeServices(MesosSessionClusterEntrypoint.java:61) >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.runCluster(ClusterEntrypoint.java:239) >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.lambda$startCluster$1(ClusterEntrypoint.java:189) >> at java.base/java.security.AccessController.doPrivileged(Native Method) >> at java.base/javax.security.auth.Subject.doAs(Unknown Source) >> at >> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1762) >> at >> org.apache.flink.runtime.security.contexts.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:41) >> at >> org.apache.flink.runtime.entrypoint.ClusterEntrypoint.startCluster(ClusterEntrypoint.java:186) >> ... 2 common frames omitted >> Caused by: java.lang.IllegalArgumentException: null >> at >> org.apache.flink.util.Preconditions.checkArgument(Preconditions.java:122) >> at >> org.apache.flink.util.NetUtils.unresolvedHostToNormalizedString(NetUtils.java:177) >> ... 17 common frames omitted >> >> >> >> On Wed, Sep 29, 2021 at 12:16 AM Matthias Pohl <matth...@ververica.com> >> wrote: >> >>> One thing that was puzzling me yesterday when reading your post: Have >>> you tried $HOST instead of $HOSTNAME in the Marathon configuration? When I >>> played around with Mesos, I remember using HOST to resolve the host's IP >>> address instead of the host's name. It could be that the hostname itself >>> cannot be resolved to the right IP address. But I struggled to find proper >>> documentation to back that up. Only in the recipes section of the Marathon >>> docs [1], HOST was used as well. >>> >>> Matthias >>> >>> [1] >>> https://mesosphere.github.io/marathon/docs/recipes.html#command-executor-health-checks >>> >>> On Wed, Sep 29, 2021 at 3:37 AM Javier Vegas <jve...@strava.com> wrote: >>> >>>> Another update: Looking more carefully in my appmaster log, I see the >>>> following >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - >>>> Registering as new framework. >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - >>>> ----------------------------------------------------------------------------- >>>> >>>> --- >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - Mesos >>>> Info: >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - Master >>>> URL: 10.0.18.246:5050 >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - Framework >>>> Info: >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - ID: >>>> (none) >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - Name: >>>> flink-test >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - Failover >>>> Timeout (secs): 604800.0 >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - Role: >>>> * >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - >>>> Capabilities: >>>> (none) >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - >>>> Principal: >>>> (none) >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - Host: >>>> 311dcf7fd77c >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - Web >>>> UI: http://311dcf7fd77c:8081 >>>> >>>> 2021-09-29 01:15:39.680 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - >>>> ----------------------------------------------------------------------------- >>>> >>>> --- >>>> >>>> >>>> which is picking up the mesos.master and >>>> mesos.resourcemanager.framework.name params I am passing to >>>> mesos-appmaster.sh >>>> >>>> >>>> In my Mesos dashboard I can see the framework has been created with the >>>> right name, but has no associated agents/tasks to it. So at least Flink has >>>> been able to connect to the Mesos master to create the framework >>>> >>>> >>>> Later in the mesos-appmaster log is when I see the Mesos connection >>>> errors: >>>> >>>> >>>> 2021-09-29 01:15:39.726 [flink-akka.actor.default-dispatcher-3] DEBUG >>>> o.a.f.r.resourcemanager.slotmanager.DeclarativeSlotManager - Starting >>>> the slot manager. >>>> >>>> 2021-09-29 01:15:39.815 [flink-akka.actor.default-dispatcher-2] DEBUG >>>> org.apache.flink.mesos.scheduler.ConnectionMonitor - State change >>>> (StoppedState -> StoppedState) with data () >>>> >>>> 2021-09-29 01:15:39.823 [flink-akka.actor.default-dispatcher-3] DEBUG >>>> o.a.f.runtime.resourcemanager.active.ActiveResourceManager - Trigger >>>> heartbeat request. >>>> >>>> 2021-09-29 01:15:39.823 [flink-akka.actor.default-dispatcher-3] DEBUG >>>> org.apache.flink.mesos.scheduler.ReconciliationCoordinator - State >>>> change (Suspended -> Suspended) with data ReconciliationData(Map(),0) >>>> >>>> 2021-09-29 01:15:39.823 [flink-akka.actor.default-dispatcher-3] DEBUG >>>> o.a.f.runtime.resourcemanager.active.ActiveResourceManager - Trigger >>>> heartbeat request. >>>> >>>> 2021-09-29 01:15:39.824 [flink-akka.actor.default-dispatcher-3] INFO >>>> org.apache.flink.mesos.scheduler.ConnectionMonitor - Connecting to >>>> Mesos... >>>> >>>> 2021-09-29 01:15:39.825 [flink-akka.actor.default-dispatcher-3] DEBUG >>>> org.apache.flink.mesos.scheduler.ConnectionMonitor - State change >>>> (StoppedState -> ConnectingState) with data () >>>> >>>> 2021-09-29 01:15:39.826 [flink-akka.actor.default-dispatcher-3] INFO >>>> o.a.f.m.runtime.clusterframework.MesosResourceManagerDriver - Mesos >>>> resource manager started. >>>> >>>> 2021-09-29 01:15:39.831 [flink-akka.actor.default-dispatcher-4] DEBUG >>>> org.apache.flink.mesos.scheduler.LaunchCoordinator - State change >>>> (Suspended -> Suspended) with data GatherData(List(),List()) >>>> >>>> 2021-09-29 01:15:44.843 [flink-akka.actor.default-dispatcher-4] WARN >>>> org.apache.flink.mesos.scheduler.ConnectionMonitor - Unable to >>>> connect to Mesos; still trying... >>>> >>>> 2021-09-29 01:15:49.843 [flink-akka.actor.default-dispatcher-3] DEBUG >>>> o.a.f.runtime.resourcemanager.active.ActiveResourceManager - Trigger >>>> heartbeat request. >>>> >>>> 2021-09-29 01:15:49.844 [flink-akka.actor.default-dispatcher-3] DEBUG >>>> o.a.f.runtime.resourcemanager.active.ActiveResourceManager - Trigger >>>> heartbeat request. >>>> >>>> >>>> >>>> >>>> So why the appmaster was able to connect to Mesos master to create the >>>> framework but failed to connect later to do whatever it does later? >>>> >>>> >>>> One possible issue I see is that the framework is set with web UI in h >>>> ttp://311dcf7fd77c:8081 which can not be resolved from the Mesos >>>> master. 311dcf7fd77c is the result of doing hostname on the Docker >>>> container, and the Mesos master can not resolve that name. I could try to >>>> replace the Docker container hostname with the Docker host hostname, but >>>> the host port that gets mapped to 8081 on the container is a random port >>>> that I can not know beforehand. Does Mesos master try to reach Flink using >>>> that Web UI setting? Could this be the issue causing my connection problem, >>>> or is this a red herring and the problem is a different one? >>>> >>>> >>>> Thanks, >>>> >>>> >>>> Javier Vegas >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> On Tue, Sep 28, 2021 at 10:23 AM Javier Vegas <jve...@strava.com> >>>> wrote: >>>> >>>>> Thanks, Matthias! >>>>> >>>>> There are lots of apps deployed to the Mesos cluster, the task manager >>>>> itself is deployed to Mesos via Marathon. In the Mesos log I can see the >>>>> Job manager agent starting, but no error messages related to it. As you >>>>> say, TaskManagers don't even have the chance to get confused about >>>>> variables, since the Job Manager can not connect to the Mesos master to >>>>> tell it to start the Task Managers. >>>>> >>>>> Thanks, >>>>> >>>>> Javier >>>>> >>>>> On Tue, Sep 28, 2021 at 7:59 AM Matthias Pohl <matth...@ververica.com> >>>>> wrote: >>>>> >>>>>> Hi Javier, >>>>>> I don't see anything that's configured in the wrong way based on the >>>>>> jobmanager logs you've provided. Have you been able to deploy other >>>>>> applications to this Mesos cluster? Do the Mesos master logs reveal >>>>>> anything? The variable resolution on the TaskManager side is a valid >>>>>> concern shared by Roman since it's easy to run into such an issue. But >>>>>> the >>>>>> JobManager logs indicate that the JobManager is not able to contact the >>>>>> Mesos master. Hence, I'd assume that it's not related to the TaskManagers >>>>>> not coming up. >>>>>> >>>>>> Best, >>>>>> Matthias >>>>>> >>>>>> On Tue, Sep 28, 2021 at 2:45 PM Roman Khachatryan <ro...@apache.org> >>>>>> wrote: >>>>>> >>>>>>> Hi, >>>>>>> >>>>>>> No additional ports need to be open as far as I know. >>>>>>> >>>>>>> Probably, $HOSTNAME is substituted for something not resolvable on >>>>>>> TMs? >>>>>>> >>>>>>> Please also make sure that the following gets executed before >>>>>>> mesos-appmaster.sh: >>>>>>> export HADOOP_CLASSPATH=$(hadoop classpath) >>>>>>> export MESOS_NATIVE_JAVA_LIBRARY=/path/to/lib/libmesos.so >>>>>>> (as per the documentation you linked) >>>>>>> >>>>>>> Regards, >>>>>>> Roman >>>>>>> >>>>>>> On Mon, Sep 27, 2021 at 7:38 PM Javier Vegas <jve...@strava.com> >>>>>>> wrote: >>>>>>> > >>>>>>> > I am trying to start Flink 1.13.2 on Mesos following the >>>>>>> instrucions in >>>>>>> https://nightlies.apache.org/flink/flink-docs-release-1.13/docs/deployment/resource-providers/mesos/ >>>>>>> and using Marathon to deploy a Docker image with both the Flink and my >>>>>>> binaries. >>>>>>> > >>>>>>> > My entrypoint for the Docker image is: >>>>>>> > >>>>>>> > >>>>>>> > /opt/flink/bin/mesos-appmaster.sh \ >>>>>>> > >>>>>>> > -Djobmanager.rpc.address=$HOSTNAME \ >>>>>>> > >>>>>>> > -Dmesos.resourcemanager.framework.user=flink \ >>>>>>> > >>>>>>> > -Dmesos.master=10.0.18.246:5050 \ >>>>>>> > >>>>>>> > -Dmesos.resourcemanager.tasks.cpus=6 >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> > When mesos-appmaster.sh starts, in the stderr I see this: >>>>>>> > >>>>>>> > >>>>>>> > I0927 16:50:32.306691 801308 exec.cpp:164] Version: 1.7.3 >>>>>>> > >>>>>>> > I0927 16:50:32.310277 801345 exec.cpp:238] Executor registered on >>>>>>> agent f671d9ee-57f6-4f92-b1b2-3137676f6cdf-S6090 >>>>>>> > >>>>>>> > I0927 16:50:32.311120 801355 executor.cpp:130] Registered docker >>>>>>> executor on 10.0.20.177 >>>>>>> > >>>>>>> > I0927 16:50:32.311394 801345 executor.cpp:186] Starting task >>>>>>> tl_flink_prod.fb215c64-1fb2-11ec-9ce6-aaa2e9cb6ba0 >>>>>>> > >>>>>>> > WARNING: Your kernel does not support swap limit capabilities or >>>>>>> the cgroup is not mounted. Memory limited without swap. >>>>>>> > >>>>>>> > WARNING: An illegal reflective access operation has occurred >>>>>>> > >>>>>>> > WARNING: Illegal reflective access by >>>>>>> org.apache.hadoop.security.authentication.util.KerberosUtil >>>>>>> (file:/opt/flink/lib/flink-shaded-hadoop-2-uber-2.8.3-10.0.jar) to >>>>>>> method >>>>>>> sun.security.krb5.Config.getInstance() >>>>>>> > >>>>>>> > WARNING: Please consider reporting this to the maintainers of >>>>>>> org.apache.hadoop.security.authentication.util.KerberosUtil >>>>>>> > >>>>>>> > WARNING: Use --illegal-access=warn to enable warnings of further >>>>>>> illegal reflective access operations >>>>>>> > >>>>>>> > WARNING: All illegal access operations will be denied in a future >>>>>>> release >>>>>>> > >>>>>>> > I0927 16:50:43.622053 237 sched.cpp:232] Version: 1.7.3 >>>>>>> > >>>>>>> > I0927 16:50:43.624439 328 sched.cpp:336] New master detected at >>>>>>> master@10.0.18.246:5050 >>>>>>> > >>>>>>> > I0927 16:50:43.624779 328 sched.cpp:356] No credentials >>>>>>> provided. Attempting to register without authentication >>>>>>> > >>>>>>> > >>>>>>> > where the "New master detected" line is promising. >>>>>>> > >>>>>>> > However, on the Flink UI I see only the jobmanager started, and >>>>>>> there are no task managers. Getting into the Docker container, I see >>>>>>> this >>>>>>> in the log: >>>>>>> > >>>>>>> > WARN org.apache.flink.mesos.scheduler.ConnectionMonitor - Unable >>>>>>> to connect to Mesos; still trying... >>>>>>> > >>>>>>> > >>>>>>> > I have verified that from the container I can access the Mesos >>>>>>> container 10.0.18.246:5050 >>>>>>> > >>>>>>> > >>>>>>> > Does any other port besides the web UI port 5050 need to be open >>>>>>> for mesos-appmaster to connect with the Mesos master? >>>>>>> > >>>>>>> > >>>>>>> > In the appmaster log (attached) I see one exception that I don't >>>>>>> know if they are related to the Mesos connection problem, one is >>>>>>> > >>>>>>> > >>>>>>> > java.io.FileNotFoundException: HADOOP_HOME and hadoop.home.dir are >>>>>>> unset. >>>>>>> > >>>>>>> > at >>>>>>> org.apache.hadoop.util.Shell.checkHadoopHomeInner(Shell.java:448) >>>>>>> > >>>>>>> > at >>>>>>> org.apache.hadoop.util.Shell.checkHadoopHome(Shell.java:419) >>>>>>> > >>>>>>> > at org.apache.hadoop.util.Shell.<clinit>(Shell.java:496) >>>>>>> > >>>>>>> > at >>>>>>> org.apache.hadoop.util.StringUtils.<clinit>(StringUtils.java:79) >>>>>>> > >>>>>>> > at >>>>>>> org.apache.hadoop.conf.Configuration.getBoolean(Configuration.java:1555) >>>>>>> > >>>>>>> > at >>>>>>> org.apache.hadoop.security.SecurityUtil.getLogSlowLookupsEnabled(SecurityUtil.java:497) >>>>>>> > >>>>>>> > at >>>>>>> org.apache.hadoop.security.SecurityUtil.<clinit>(SecurityUtil.java:90) >>>>>>> > >>>>>>> > at >>>>>>> org.apache.hadoop.security.UserGroupInformation.initialize(UserGroupInformation.java:289) >>>>>>> > >>>>>>> > at >>>>>>> org.apache.hadoop.security.UserGroupInformation.ensureInitialized(UserGroupInformation.java:277) >>>>>>> > >>>>>>> > at >>>>>>> org.apache.hadoop.security.UserGroupInformation.loginUserFromSubject(UserGroupInformation.java:833) >>>>>>> > >>>>>>> > at >>>>>>> org.apache.hadoop.security.UserGroupInformation.getLoginUser(UserGroupInformation.java:803) >>>>>>> > >>>>>>> > at >>>>>>> org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:676) >>>>>>> > >>>>>>> > at >>>>>>> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native >>>>>>> Method) >>>>>>> > >>>>>>> > at >>>>>>> java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown >>>>>>> Source) >>>>>>> > >>>>>>> > at >>>>>>> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown >>>>>>> Source) >>>>>>> > >>>>>>> > at java.base/java.lang.reflect.Method.invoke(Unknown >>>>>>> Source) >>>>>>> > >>>>>>> > at >>>>>>> org.apache.flink.runtime.util.EnvironmentInformation.getHadoopUser(EnvironmentInformation.java:215) >>>>>>> > >>>>>>> > at >>>>>>> org.apache.flink.runtime.util.EnvironmentInformation.logEnvironmentInfo(EnvironmentInformation.java:432) >>>>>>> > >>>>>>> > at >>>>>>> org.apache.flink.mesos.entrypoint.MesosSessionClusterEntrypoint.main(MesosSessionClusterEntrypoint.java:95) >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> > I am not trying (yet) to run in high availability mode, so I am >>>>>>> not sure if I need to have HADOOP_HOME set or not, but I don't see >>>>>>> anything >>>>>>> about HADOOP_HOME in the FLink docs. >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> > Any tips on how I can fix my Docker+Marathon+Mesos environment so >>>>>>> Flink can connect to my Mesos master? >>>>>>> > >>>>>>> > >>>>>>> > Thanks, >>>>>>> > >>>>>>> > >>>>>>> > Javier Vegas >>>>>>> > >>>>>>> > >>>>>> >>>>>> >>>