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Zookeeper, mail # user - ZooKeeper ports


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Re: ZooKeeper ports
César Álvarez Núñez 2011-10-06, 08:50
Could be the "leader election port" and "jmx server listening port"?
/César.

http://zookeeper.apache.org/doc/r3.3.3/zookeeperAdmin.html#sc_advancedConfiguration

> *server.x=[hostname]:nnnnn[:nnnnn], etc *
>
> *(No Java system property)*
>
> *servers making up the ZooKeeper ensemble. When the server starts up, it
> determines which server it is by looking for the file myid in the data
> directory. That file contains the server number, in ASCII, and it should
> match x in server.x in the left hand side of this setting.*
>
> *The list of servers that make up ZooKeeper servers that is used by the
> clients must match the list of ZooKeeper servers that each ZooKeeper server
> has.*
>
> *There are two port numbers nnnnn. The first followers use to connect to
> the leader, and the second is for leader election. The leader election port
> is only necessary if electionAlg is 1, 2, or 3 (default). If electionAlg is
> 0, then the second port is not necessary. If you want to test multiple
> servers on a single machine, then different ports can be used for each
> server.*
>
>
On Thu, Oct 6, 2011 at 10:35 AM, Dima Gutzeit
<[EMAIL PROTECTED]>wrote:

> All the ports I listed in the original mail are used by zookeeper.
>
> 16929/java
>
> Regards ,
>
> Dima Gutzeit.
>
>
>
> 2011/10/6 César Álvarez Núñez <[EMAIL PROTECTED]>
>
> > Just google "How to find which service is listening on a given port" and
> > you
> > will get the key to know if that ports are being used by a java process
> or
> > not.
> >
> > /César.
> >
> > On Wed, Oct 5, 2011 at 7:03 PM, Dima Gutzeit <
> [EMAIL PROTECTED]
> > >wrote:
> >
> > > 3.3.3 vanilla distribution, JDK 1.6.0_25, 64 bit.
> > > Running on RedHat Enterprise 5.6, 64 bit.
> > >
> > > ZK is the only java process running on this machine and I did not do
> > > anything to enable any kind of monitoring.
> > >
> > > Regards,
> > > Dima Gutzeit.
> > >
> > > Sent from my iPhone
> > >
> > > On 5 באוק 2011, at 18:50, Patrick Hunt <[EMAIL PROTECTED]> wrote:
> > >
> > > > Same here. What version of what jdk on what os are you running?
> (hint:
> > > > type "java -version"). Include the environment details that get
> output
> > > > to the log when zk starts.
> > > >
> > > > Are you starting JMX or some other VM service that enables remote
> > > monitoring?
> > > >
> > > > Did you try telneting to that port and type something, did it respond
> > > > or generate some error in the log?
> > > >
> > > > Patrick
> > > >
> > > > On Mon, Oct 3, 2011 at 10:14 AM, Ted Dunning <[EMAIL PROTECTED]>
> > > wrote:
> > > >> I don't know, then.
> > > >>
> > > >> On Mon, Oct 3, 2011 at 10:04 AM, Dima Gutzeit
> > > >> <[EMAIL PROTECTED]>wrote:
> > > >>
> > > >>> No, only one server is running and no clients connected.
> > > >>>
> > > >>> Regards,
> > > >>> Dima Gutzeit.
> > > >>>
> > > >>> Sent from my iPhone
> > > >>>
> > > >>> On 3 באוק 2011, at 18:52, Ted Dunning <[EMAIL PROTECTED]>
> wrote:
> > > >>>
> > > >>>> Could they be the receiving side of the connections from two other
> > > >>> members
> > > >>>> of the ZK cluster?
> > > >>>>
> > > >>>> On Mon, Oct 3, 2011 at 9:03 AM, Dima Gutzeit <
> > > >>> [EMAIL PROTECTED]>wrote:
> > > >>>>
> > > >>>>> Hi,
> > > >>>>>
> > > >>>>> I am running a ZooKeeper vanilla distribution on a linux machine.
> > > Doing
> > > >>>>> netstat I can see that server listens to the following ports:
> > > >>>>>
> > > >>>>> tcp        0      0 127.0.0.1:32000             0.0.0.0:*
> > > >>>>> LISTEN      16929/java
> > > >>>>> tcp        0      0 0.0.0.0:2181                0.0.0.0:*
> > > >>>>> LISTEN      16929/java
> > > >>>>> tcp        0      0 0.0.0.0:3888                0.0.0.0:*
> > > >>>>> LISTEN      16929/java
> > > >>>>> tcp        0      0 0.0.0.0:44635               0.0.0.0:*
> > > >>>>> LISTEN      16929/java
> > > >>>>>
> > > >>>>> I can explain 2181 which is the client port and 3888 which is
> > > >>>>> communication-between-nodes port.. What are the other two ?