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
>
>

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