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From "Benjamin Hindman (Commented) (JIRA)" <>
Subject [jira] [Commented] (MESOS-165) Slaves die after initial registration with master with "Network is unreachable" error
Date Fri, 23 Mar 2012 15:39:27 GMT


Benjamin Hindman commented on MESOS-165:

They should be able to bind to the same IP, but not the same port or webui_port. If you run
the master and slave directly from the command line (i.e, without you should
be able to confirm this is the case.
> Slaves die after initial registration with master with "Network is unreachable" error
> -------------------------------------------------------------------------------------
>                 Key: MESOS-165
>                 URL:
>             Project: Mesos
>          Issue Type: Bug
>          Components: master, slave
>         Environment: Scientific Linux 6.2 internal cluster
>            Reporter: Jessica J
>            Assignee: Charles Reiss
>            Priority: Blocker
> I am using a cluster in which only the master is externally accessible, so when I start
the master, I set --ip to one of its internal IP addresses so that it can communicate with
its slaves. I have also tried setting this ip address in (in the deploy directory)
by setting LIBPROCESS_IP, but each time the master starts, it says that it is running at the
external IP address (as if it is ignoring the --ip or LIBPROCESS_IP options).
> When I start a slave, I tell it that the master is at an internal IP address (no matter
what the master says it's running at), so the initial connection is successful. (I get messages
output from both the slave and the master saying the connection was successful.) However,
after registering, the slave *immediately* dies. My guess is that upon successful connection,
the master tells the slave to communicate with it on the external IP address, but since the
slave has no access to the Internet, any further communication fails. 
> The following is the error message the slave gives when it dies:
> F0314 12:25:45.196940 13406 process.cpp:1576] Failed to link, connect: Network is unreachable
> *** Check failure stack trace: ***
>     @     0x7f7d6be3342d  google::LogMessage::Fail()
>     @     0x7f7d6be36ae7  google::LogMessage::SendToLog()
>     @     0x7f7d6be36066  google::LogMessage::Flush()
>     @     0x7f7d6be36279  google::LogMessage::~LogMessage()
>     @     0x7f7d6be39351  google::ErrnoLogMessage::~ErrnoLogMessage()
>     @     0x7f7d6be47319  process::SocketManager::link()
>     @     0x7f7d6be4bc88  process::ProcessManager::link()
>     @     0x7f7d6be4ed98  process::ProcessBase::link()
>     @     0x7f7d6bcaf575  mesos::internal::slave::Slave::newMasterDetected()
>     @     0x7f7d6bcbbd7f  ProtobufProcess<>::handler1<>()
>     @     0x7f7d6bcbe477  ProtobufProcess<>::visit()
>     @     0x7f7d6be504e0  process::MessageEvent::visit()
>     @     0x7f7d6be4b448  process::ProcessManager::resume()
>     @     0x7f7d6be43bae  process::schedule()
>     @     0x7f7d6b5a77f1  start_thread
>     @     0x7f7d6a93c92d  clone
> Aborted
> I have looked at the code (master.cpp, process.cpp, main.cpp, slave.cpp,,
etc.) and tried to determine why the ip option is getting ignored, but I have thus far been

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