# Any zen discovery difference between master eligible and non eligible nodes?
**URL:** https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849
**Category:** Elasticsearch
**Created:** [September 17, 2014, 6:08pm UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849 "2014-09-17T18:08:45Z")
**Posts on this page:** 15
**Page:** 1
### Author:  [@Jinyuan\_Zhou](https://discuss.elastic.co/u/Jinyuan_Zhou)
#### Post date: [September 17, 2014, 6:08pm UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/1 "2014-09-17T18:08:45Z")
I have two nodes with this configuration -Des.node.data=false
-Des.node.master=false when I start. But these nodes have experiencing
finding master node. Here is message.
[2014-09-17 16:51:10,457][WARN][discovery] [mynodename]
waited for 30s and no initial state was set by the discovery
However, If I remove -Des.node.master=false.
The discovery have no issue.
Thanks,
Jack
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### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 17, 2014, 6:54pm UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/2 "2014-09-17T18:54:29Z")
A cluster needs a master node.
You need at least one node which could be elected as master.
--
David 😉
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> Le 17 sept. 2014 à 20:08, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
>
> I have two nodes with this configuration -Des.node.data=false -Des.node.master=false when I start. But these nodes have experiencing finding master node. Here is message.
> [2014-09-17 16:51:10,457][WARN][discovery] [mynodename] waited for 30s and no initial state was set by the discovery
>
> However, If I remove -Des.node.master=false.
>
> The discovery have no issue.
>
> Thanks,
>
> Jack
>
> --
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### Author:  [@Jinyuan\_Zhou](https://discuss.elastic.co/u/Jinyuan_Zhou)
#### Post date: [September 17, 2014, 7:09pm UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/3 "2014-09-17T19:09:02Z")
Sorry I didn't explain clearly. I have a cluster with 12 nodes. 10 are
master eligible. 2 are client only (es.node.data=false,
es.node.master=false). I have configured the minimal number of nodes to
form a cluster is 6. all the boxes hosting 12 es instances are on the same
rack. The problem is that these two client-only nodes cannot join the
cluster. It cannot discovers the master. But if I make them master eligible
it discover the master node immediately.
I don't understand what make the differences.
Thanks,
Jack
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 11:54 AM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> A cluster needs a master node.
>
> You need at least one node which could be elected as master.
>
> --
> David 😉
> Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
>
> Le 17 sept. 2014 à 20:08, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
>
> I have two nodes with this configuration -Des.node.data=false
> -Des.node.master=false when I start. But these nodes have experiencing
> finding master node. Here is message.
>
> [2014-09-17 16:51:10,457][WARN][discovery] [mynodename]
> waited for 30s and no initial state was set by the discovery
>
> However, If I remove -Des.node.master=false.
>
> The discovery have no issue.
>
> Thanks,
>
> Jack
>
> --
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> .
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### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 17, 2014, 7:24pm UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/4 "2014-09-17T19:24:19Z")
Did you set the same cluster name?
--
David 😉
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
Le 17 sept. 2014 à 21:09, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
Sorry I didn't explain clearly. I have a cluster with 12 nodes. 10 are master eligible. 2 are client only (es.node.data=false, es.node.master=false). I have configured the minimal number of nodes to form a cluster is 6. all the boxes hosting 12 es instances are on the same rack. The problem is that these two client-only nodes cannot join the cluster. It cannot discovers the master. But if I make them master eligible it discover the master node immediately.
I don't understand what make the differences.
Thanks,
Jack
Jinyuan (Jack) Zhou
> On Wed, Sep 17, 2014 at 11:54 AM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> A cluster needs a master node.
>
> You need at least one node which could be elected as master.
>
> --
> David 😉
> Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
>
> > Le 17 sept. 2014 à 20:08, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
> >
> > I have two nodes with this configuration -Des.node.data=false -Des.node.master=false when I start. But these nodes have experiencing finding master node. Here is message.
> > [2014-09-17 16:51:10,457][WARN][discovery] [mynodename] waited for 30s and no initial state was set by the discovery
> >
> > However, If I remove -Des.node.master=false.
> >
> > The discovery have no issue.
> >
> > Thanks,
> >
> > Jack
> >
> > --
> > You received this message because you are subscribed to the Google Groups "elasticsearch" group.
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> > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout).
>
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### Author:  [@Jinyuan\_Zhou](https://discuss.elastic.co/u/Jinyuan_Zhou)
#### Post date: [September 17, 2014, 7:49pm UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/5 "2014-09-17T19:49:48Z")
yes. cluster name is set to be the same on all 12 nodes
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 12:24 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> Did you set the same cluster name?
>
> --
> David 😉
> Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
>
> Le 17 sept. 2014 à 21:09, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
>
> Sorry I didn't explain clearly. I have a cluster with 12 nodes. 10 are
> master eligible. 2 are client only (es.node.data=false,
> es.node.master=false). I have configured the minimal number of nodes to
> form a cluster is 6. all the boxes hosting 12 es instances are on the same
> rack. The problem is that these two client-only nodes cannot join the
> cluster. It cannot discovers the master. But if I make them master eligible
> it discover the master node immediately.
> I don't understand what make the differences.
> Thanks,
> Jack
>
> Jinyuan (Jack) Zhou
>
> On Wed, Sep 17, 2014 at 11:54 AM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
>
> > A cluster needs a master node.
> >
> > You need at least one node which could be elected as master.
> >
> > --
> > David 😉
> > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> >
> > Le 17 sept. 2014 à 20:08, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
> >
> > I have two nodes with this configuration -Des.node.data=false
> > -Des.node.master=false when I start. But these nodes have experiencing
> > finding master node. Here is message.
> >
> > [2014-09-17 16:51:10,457][WARN][discovery] [mynodename]
> > waited for 30s and no initial state was set by the discovery
> >
> > However, If I remove -Des.node.master=false.
> >
> > The discovery have no issue.
> >
> > Thanks,
> >
> > Jack
> >
> > --
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> > [https://groups.google.com/d/msgid/elasticsearch/8b645630-c6cf-4c32-820d-213f9122f109%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/8b645630-c6cf-4c32-820d-213f9122f109%40googlegroups.com?utm_medium=email&utm_source=footer)
> > .
> > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout).
> >
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> > .
> >
> > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout).
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### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 17, 2014, 8:08pm UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/6 "2014-09-17T20:08:56Z")
Are you using multicast or unicast or a plugin for discovery?
--
David 😉
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
Le 17 sept. 2014 à 21:49, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
yes. cluster name is set to be the same on all 12 nodes
Jinyuan (Jack) Zhou
> On Wed, Sep 17, 2014 at 12:24 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> Did you set the same cluster name?
>
> --
> David 😉
> Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
>
> Le 17 sept. 2014 à 21:09, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
>
> Sorry I didn't explain clearly. I have a cluster with 12 nodes. 10 are master eligible. 2 are client only (es.node.data=false, es.node.master=false). I have configured the minimal number of nodes to form a cluster is 6. all the boxes hosting 12 es instances are on the same rack. The problem is that these two client-only nodes cannot join the cluster. It cannot discovers the master. But if I make them master eligible it discover the master node immediately.
> I don't understand what make the differences.
> Thanks,
> Jack
>
> Jinyuan (Jack) Zhou
>
> > On Wed, Sep 17, 2014 at 11:54 AM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> > A cluster needs a master node.
> >
> > You need at least one node which could be elected as master.
> >
> > --
> > David 😉
> > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> >
> > > Le 17 sept. 2014 à 20:08, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
> > >
> > > I have two nodes with this configuration -Des.node.data=false -Des.node.master=false when I start. But these nodes have experiencing finding master node. Here is message.
> > > [2014-09-17 16:51:10,457][WARN][discovery] [mynodename] waited for 30s and no initial state was set by the discovery
> > >
> > > However, If I remove -Des.node.master=false.
> > >
> > > The discovery have no issue.
> > >
> > > Thanks,
> > >
> > > Jack
> > >
> > > --
> > > You received this message because you are subscribed to the Google Groups "elasticsearch" group.
> > > To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com).
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> > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout).
> >
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### Author:  [@Jinyuan\_Zhou](https://discuss.elastic.co/u/Jinyuan_Zhou)
#### Post date: [September 17, 2014, 8:13pm UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/7 "2014-09-17T20:13:58Z")
I am using unicast with out of box zen discovery.
discovery.zen.ping.multicast.enabled: false
-Des.discovery.zen.ping.unicast.hosts=
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 1:08 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> Are you using multicast or unicast or a plugin for discovery?
>
> --
> David 😉
> Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
>
> Le 17 sept. 2014 à 21:49, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
>
> yes. cluster name is set to be the same on all 12 nodes
>
> Jinyuan (Jack) Zhou
>
> On Wed, Sep 17, 2014 at 12:24 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
>
> > Did you set the same cluster name?
> >
> > --
> > David 😉
> > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> >
> > Le 17 sept. 2014 à 21:09, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
> >
> > Sorry I didn't explain clearly. I have a cluster with 12 nodes. 10 are
> > master eligible. 2 are client only (es.node.data=false,
> > es.node.master=false). I have configured the minimal number of nodes to
> > form a cluster is 6. all the boxes hosting 12 es instances are on the same
> > rack. The problem is that these two client-only nodes cannot join the
> > cluster. It cannot discovers the master. But if I make them master eligible
> > it discover the master node immediately.
> > I don't understand what make the differences.
> > Thanks,
> > Jack
> >
> > Jinyuan (Jack) Zhou
> >
> > On Wed, Sep 17, 2014 at 11:54 AM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> >
> > > A cluster needs a master node.
> > >
> > > You need at least one node which could be elected as master.
> > >
> > > --
> > > David 😉
> > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> > >
> > > Le 17 sept. 2014 Ã 20:08, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a
> > > écrit :
> > >
> > > I have two nodes with this configuration -Des.node.data=false
> > > -Des.node.master=false when I start. But these nodes have experiencing
> > > finding master node. Here is message.
> > >
> > > [2014-09-17 16:51:10,457][WARN][discovery] [mynodename]
> > > waited for 30s and no initial state was set by the discovery
> > >
> > > However, If I remove -Des.node.master=false.
> > >
> > > The discovery have no issue.
> > >
> > > Thanks,
> > >
> > > Jack
> > >
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### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 17, 2014, 8:27pm UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/8 "2014-09-17T20:27:57Z")
When you start the client node, did you set list of master nodes as unicast hosts?
--
David 😉
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
Le 17 sept. 2014 à 22:13, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
I am using unicast with out of box zen discovery.
discovery.zen.ping.multicast.enabled: false
-Des.discovery.zen.ping.unicast.hosts=
Jinyuan (Jack) Zhou
> On Wed, Sep 17, 2014 at 1:08 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> Are you using multicast or unicast or a plugin for discovery?
>
> --
> David 😉
> Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
>
> Le 17 sept. 2014 à 21:49, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
>
> yes. cluster name is set to be the same on all 12 nodes
>
> Jinyuan (Jack) Zhou
>
> > On Wed, Sep 17, 2014 at 12:24 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> > Did you set the same cluster name?
> >
> > --
> > David 😉
> > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> >
> > Le 17 sept. 2014 à 21:09, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
> >
> > Sorry I didn't explain clearly. I have a cluster with 12 nodes. 10 are master eligible. 2 are client only (es.node.data=false, es.node.master=false). I have configured the minimal number of nodes to form a cluster is 6. all the boxes hosting 12 es instances are on the same rack. The problem is that these two client-only nodes cannot join the cluster. It cannot discovers the master. But if I make them master eligible it discover the master node immediately.
> > I don't understand what make the differences.
> > Thanks,
> > Jack
> >
> > Jinyuan (Jack) Zhou
> >
> > > On Wed, Sep 17, 2014 at 11:54 AM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> > > A cluster needs a master node.
> > >
> > > You need at least one node which could be elected as master.
> > >
> > > --
> > > David 😉
> > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> > >
> > > > Le 17 sept. 2014 à 20:08, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
> > > >
> > > > I have two nodes with this configuration -Des.node.data=false -Des.node.master=false when I start. But these nodes have experiencing finding master node. Here is message.
> > > > [2014-09-17 16:51:10,457][WARN][discovery] [mynodename] waited for 30s and no initial state was set by the discovery
> > > >
> > > > However, If I remove -Des.node.master=false.
> > > >
> > > > The discovery have no issue.
> > > >
> > > > Thanks,
> > > >
> > > > Jack
> > > >
> > > > --
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### Author:  [@Jinyuan\_Zhou](https://discuss.elastic.co/u/Jinyuan_Zhou)
#### Post date: [September 17, 2014, 8:31pm UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/9 "2014-09-17T20:31:25Z")
Yes.
The settings are almost same for all nodes
discovery.zen.ping.multicast.enabled: false # this is in elasticsearch.yml
-Des.discovery.zen.ping.unicast.hosts= this is
java -D parameter
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 1:27 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> When you start the client node, did you set list of master nodes as
> unicast hosts?
>
> --
> David 😉
> Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
>
> Le 17 sept. 2014 à 22:13, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
>
> I am using unicast with out of box zen discovery.
>
> discovery.zen.ping.multicast.enabled: false
>
> -Des.discovery.zen.ping.unicast.hosts=
>
> Jinyuan (Jack) Zhou
>
> On Wed, Sep 17, 2014 at 1:08 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
>
> > Are you using multicast or unicast or a plugin for discovery?
> >
> > --
> > David 😉
> > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> >
> > Le 17 sept. 2014 à 21:49, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
> >
> > yes. cluster name is set to be the same on all 12 nodes
> >
> > Jinyuan (Jack) Zhou
> >
> > On Wed, Sep 17, 2014 at 12:24 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> >
> > > Did you set the same cluster name?
> > >
> > > --
> > > David 😉
> > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> > >
> > > Le 17 sept. 2014 Ã 21:09, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a
> > > écrit :
> > >
> > > Sorry I didn't explain clearly. I have a cluster with 12 nodes. 10 are
> > > master eligible. 2 are client only (es.node.data=false,
> > > es.node.master=false). I have configured the minimal number of nodes to
> > > form a cluster is 6. all the boxes hosting 12 es instances are on the same
> > > rack. The problem is that these two client-only nodes cannot join the
> > > cluster. It cannot discovers the master. But if I make them master eligible
> > > it discover the master node immediately.
> > > I don't understand what make the differences.
> > > Thanks,
> > > Jack
> > >
> > > Jinyuan (Jack) Zhou
> > >
> > > On Wed, Sep 17, 2014 at 11:54 AM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> > >
> > > > A cluster needs a master node.
> > > >
> > > > You need at least one node which could be elected as master.
> > > >
> > > > --
> > > > David 😉
> > > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> > > >
> > > > Le 17 sept. 2014 Ã 20:08, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a
> > > > écrit :
> > > >
> > > > I have two nodes with this configuration -Des.node.data=false
> > > > -Des.node.master=false when I start. But these nodes have experiencing
> > > > finding master node. Here is message.
> > > >
> > > > [2014-09-17 16:51:10,457][WARN][discovery]
> > > > [mynodename] waited for 30s and no initial state was set by the discovery
> > > >
> > > > However, If I remove -Des.node.master=false.
> > > >
> > > > The discovery have no issue.
> > > >
> > > > Thanks,
> > > >
> > > > Jack
> > > >
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### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 18, 2014, 12:52am UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/10 "2014-09-18T00:52:08Z")
And when you remove -Des.node.master=false the client node is able to join the cluster?
I mean "join" the cluster so you can see it joining in the master node logs.
--
David 😉
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
Le 17 sept. 2014 à 22:31, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
Yes.
The settings are almost same for all nodes
discovery.zen.ping.multicast.enabled: false # this is in elasticsearch.yml
-Des.discovery.zen.ping.unicast.hosts= this is java -D parameter
Jinyuan (Jack) Zhou
> On Wed, Sep 17, 2014 at 1:27 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> When you start the client node, did you set list of master nodes as unicast hosts?
>
> --
> David 😉
> Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
>
> Le 17 sept. 2014 à 22:13, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
>
> I am using unicast with out of box zen discovery.
>
> discovery.zen.ping.multicast.enabled: false
>
> -Des.discovery.zen.ping.unicast.hosts=
>
> Jinyuan (Jack) Zhou
>
> > On Wed, Sep 17, 2014 at 1:08 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> > Are you using multicast or unicast or a plugin for discovery?
> >
> > --
> > David 😉
> > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> >
> > Le 17 sept. 2014 à 21:49, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
> >
> > yes. cluster name is set to be the same on all 12 nodes
> >
> > Jinyuan (Jack) Zhou
> >
> > > On Wed, Sep 17, 2014 at 12:24 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> > > Did you set the same cluster name?
> > >
> > > --
> > > David 😉
> > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> > >
> > > Le 17 sept. 2014 à 21:09, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
> > >
> > > Sorry I didn't explain clearly. I have a cluster with 12 nodes. 10 are master eligible. 2 are client only (es.node.data=false, es.node.master=false). I have configured the minimal number of nodes to form a cluster is 6. all the boxes hosting 12 es instances are on the same rack. The problem is that these two client-only nodes cannot join the cluster. It cannot discovers the master. But if I make them master eligible it discover the master node immediately.
> > > I don't understand what make the differences.
> > > Thanks,
> > > Jack
> > >
> > > Jinyuan (Jack) Zhou
> > >
> > > > On Wed, Sep 17, 2014 at 11:54 AM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> > > > A cluster needs a master node.
> > > >
> > > > You need at least one node which could be elected as master.
> > > >
> > > > --
> > > > David 😉
> > > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> > > >
> > > > > Le 17 sept. 2014 à 20:08, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
> > > > >
> > > > > I have two nodes with this configuration -Des.node.data=false -Des.node.master=false when I start. But these nodes have experiencing finding master node. Here is message.
> > > > > [2014-09-17 16:51:10,457][WARN][discovery] [mynodename] waited for 30s and no initial state was set by the discovery
> > > > >
> > > > > However, If I remove -Des.node.master=false.
> > > > >
> > > > > The discovery have no issue.
> > > > >
> > > > > Thanks,
> > > > >
> > > > > Jack
> > > > >
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### Author:  [@Jinyuan\_Zhou](https://discuss.elastic.co/u/Jinyuan_Zhou)
#### Post date: [September 18, 2014, 12:54am UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/11 "2014-09-18T00:54:23Z")
yes.
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 5:52 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> And when you remove -Des.node.master=false the client node is able to
> join the cluster?
> I mean "join" the cluster so you can see it joining in the master node
> logs.
>
> --
> David 😉
> Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
>
> Le 17 sept. 2014 à 22:31, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
>
> Yes.
> The settings are almost same for all nodes
>
> discovery.zen.ping.multicast.enabled: false # this is in elasticsearch.yml
>
> -Des.discovery.zen.ping.unicast.hosts= this is
> java -D parameter
>
> Jinyuan (Jack) Zhou
>
> On Wed, Sep 17, 2014 at 1:27 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
>
> > When you start the client node, did you set list of master nodes as
> > unicast hosts?
> >
> > --
> > David 😉
> > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> >
> > Le 17 sept. 2014 à 22:13, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
> >
> > I am using unicast with out of box zen discovery.
> >
> > discovery.zen.ping.multicast.enabled: false
> >
> > -Des.discovery.zen.ping.unicast.hosts=
> >
> > Jinyuan (Jack) Zhou
> >
> > On Wed, Sep 17, 2014 at 1:08 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> >
> > > Are you using multicast or unicast or a plugin for discovery?
> > >
> > > --
> > > David 😉
> > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> > >
> > > Le 17 sept. 2014 Ã 21:49, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a
> > > écrit :
> > >
> > > yes. cluster name is set to be the same on all 12 nodes
> > >
> > > Jinyuan (Jack) Zhou
> > >
> > > On Wed, Sep 17, 2014 at 12:24 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> > >
> > > > Did you set the same cluster name?
> > > >
> > > > --
> > > > David 😉
> > > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> > > >
> > > > Le 17 sept. 2014 Ã 21:09, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a
> > > > écrit :
> > > >
> > > > Sorry I didn't explain clearly. I have a cluster with 12 nodes. 10 are
> > > > master eligible. 2 are client only (es.node.data=false,
> > > > es.node.master=false). I have configured the minimal number of nodes to
> > > > form a cluster is 6. all the boxes hosting 12 es instances are on the same
> > > > rack. The problem is that these two client-only nodes cannot join the
> > > > cluster. It cannot discovers the master. But if I make them master eligible
> > > > it discover the master node immediately.
> > > > I don't understand what make the differences.
> > > > Thanks,
> > > > Jack
> > > >
> > > > Jinyuan (Jack) Zhou
> > > >
> > > > On Wed, Sep 17, 2014 at 11:54 AM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> > > >
> > > > > A cluster needs a master node.
> > > > >
> > > > > You need at least one node which could be elected as master.
> > > > >
> > > > > --
> > > > > David 😉
> > > > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> > > > >
> > > > > Le 17 sept. 2014 Ã 20:08, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a
> > > > > écrit :
> > > > >
> > > > > I have two nodes with this configuration -Des.node.data=false
> > > > > -Des.node.master=false when I start. But these nodes have experiencing
> > > > > finding master node. Here is message.
> > > > >
> > > > > [2014-09-17 16:51:10,457][WARN][discovery]
> > > > > [mynodename] waited for 30s and no initial state was set by the discovery
> > > > >
> > > > > However, If I remove -Des.node.master=false.
> > > > >
> > > > > The discovery have no issue.
> > > > >
> > > > > Thanks,
> > > > >
> > > > > Jack
> > > > >
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### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 18, 2014, 6:39am UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/12 "2014-09-18T06:39:21Z")
Ok. I tried to reproduce it on elasticsearch 1.3.2.
First node started:
bin/elasticsearch -Ddiscovery.zen.ping.multicast.enabled=false -Des.discovery.zen.ping.unicast.hosts=localhost
[2014-09-18 08:36:05,417][INFO][cluster.service] [Crusader] new\_master [Crusader][i3SU0cwSQeizbN\_MUqAXSw][MacBook-Air-de-David.local][inet[/192.168.0.15:9300]], reason: zen-disco-join (elected\_as\_master)
Second node (client):
bin/elasticsearch -Ddiscovery.zen.ping.multicast.enabled=false -Des.discovery.zen.ping.unicast.hosts=localhost -Des.node.data=false -Des.node.master=false
[2014-09-18 08:36:36,444][INFO][cluster.service] [Sekhmet] detected\_master [Crusader][i3SU0cwSQeizbN\_MUqAXSw][MacBook-Air-de-David.local][inet[/192.168.0.15:9300]], added {[Crusader][i3SU0cwSQeizbN\_MUqAXSw][MacBook-Air-de-David.local][inet[/192.168.0.15:9300]],}, reason: zen-disco-receive(from master [[Crusader][i3SU0cwSQeizbN\_MUqAXSw][MacBook-Air-de-David.local][inet[/192.168.0.15:9300]]])
So to me everything is working fine.
I don't understand what you are exactly doing. May be you should try to change logging.yml to DEBUG or TRACE and see what's going on in your client node.
--
David Pilato | Technical Advocate | [Elasticsearch.com](http://Elasticsearch.com)
@dadoonet | @elasticsearchfr
Le 18 septembre 2014 à 02:54:31, Jinyuan Zhou ([zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com)) a écrit:
yes.
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 5:52 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
And when you remove -Des.node.master=false the client node is able to join the cluster?
I mean "join" the cluster so you can see it joining in the master node logs.
--
David 😉
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
Le 17 sept. 2014 à 22:31, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
Yes.
The settings are almost same for all nodes
discovery.zen.ping.multicast.enabled: false # this is in elasticsearch.yml
-Des.discovery.zen.ping.unicast.hosts= this is java -D parameter
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 1:27 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
When you start the client node, did you set list of master nodes as unicast hosts?
--
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Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
Le 17 sept. 2014 à 22:13, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
I am using unicast with out of box zen discovery.
discovery.zen.ping.multicast.enabled: false
-Des.discovery.zen.ping.unicast.hosts=
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 1:08 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
Are you using multicast or unicast or a plugin for discovery?
--
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Le 17 sept. 2014 à 21:49, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
yes. cluster name is set to be the same on all 12 nodes
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 12:24 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
Did you set the same cluster name?
--
David 😉
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
Le 17 sept. 2014 à 21:09, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
Sorry I didn't explain clearly. I have a cluster with 12 nodes. 10 are master eligible. 2 are client only (es.node.data=false, es.node.master=false). I have configured the minimal number of nodes to form a cluster is 6. all the boxes hosting 12 es instances are on the same rack. The problem is that these two client-only nodes cannot join the cluster. It cannot discovers the master. But if I make them master eligible it discover the master node immediately.
I don't understand what make the differences.
Thanks,
Jack
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 11:54 AM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
A cluster needs a master node.
You need at least one node which could be elected as master.
--
David 😉
Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
Le 17 sept. 2014 à 20:08, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
I have two nodes with this configuration -Des.node.data=false -Des.node.master=false when I start. But these nodes have experiencing finding master node. Here is message.
[2014-09-17 16:51:10,457][WARN][discovery] [mynodename] waited for 30s and no initial state was set by the discovery
However, If I remove -Des.node.master=false.
The discovery have no issue.
Thanks,
Jack
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### Author:  [@Jinyuan\_Zhou](https://discuss.elastic.co/u/Jinyuan_Zhou)
#### Post date: [September 18, 2014, 3:32pm UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/13 "2014-09-18T15:32:12Z")
David,
Thanks for taking time to look at my issue. My issue is probably too slow
to find a master node to join. I was wondering if non master eligible nodes
takes longer to find a master node. May be some time out happened. I was
looking for some parameters to allow more time to find a master node. I
played with discovery.zen.fd.ping\_timeout. I set it 90 seconds (default is
30s). It didn't make a difference. The message still says "waited for 30s
and no initial state was set by the discovery".
Regards,
Jack
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 11:39 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> Ok. I tried to reproduce it on elasticsearch 1.3.2.
>
> First node started:
>
> bin/elasticsearch -Ddiscovery.zen.ping.multicast.enabled=false
> -Des.discovery.zen.ping.unicast.hosts=localhost
>
> [2014-09-18 08:36:05,417][INFO][cluster.service] [Crusader]
> new\_master
> [Crusader][i3SU0cwSQeizbN\_MUqAXSw][MacBook-Air-de-David.local][inet[/192.168.0.15:9300]],
> reason: zen-disco-join (elected\_as\_master)
>
> Second node (client):
>
> bin/elasticsearch -Ddiscovery.zen.ping.multicast.enabled=false
> -Des.discovery.zen.ping.unicast.hosts=localhost -Des.node.data=false
> -Des.node.master=false
>
> [2014-09-18 08:36:36,444][INFO][cluster.service] [Sekhmet]
> detected\_master
> [Crusader][i3SU0cwSQeizbN\_MUqAXSw][MacBook-Air-de-David.local][inet[/192.168.0.15:9300]],
> added
> {[Crusader][i3SU0cwSQeizbN\_MUqAXSw][MacBook-Air-de-David.local][inet[/192.168.0.15:9300]],},
> reason: zen-disco-receive(from master
> [[Crusader][i3SU0cwSQeizbN\_MUqAXSw][MacBook-Air-de-David.local][inet[/192.168.0.15:9300
> ]]])
>
> So to me everything is working fine.
>
> I don't understand what you are exactly doing. May be you should try to
> change logging.yml to DEBUG or TRACE and see what's going on in your client
> node.
>
> --
> _David Pilato_ | _Technical Advocate_ | _[Elasticsearch.com](http://Elasticsearch.com)_
> @dadoonet [https://twitter.com/dadoonet](https://twitter.com/dadoonet) | @elasticsearchfr
> [https://twitter.com/elasticsearchfr](https://twitter.com/elasticsearchfr)
>
> Le 18 septembre 2014 Ã 02:54:31, Jinyuan Zhou ([zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com)) a
> écrit:
>
> yes.
>
> Jinyuan (Jack) Zhou
>
> On Wed, Sep 17, 2014 at 5:52 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
>
> > And when you remove -Des.node.master=false the client node is able to
> > join the cluster?
> > I mean "join" the cluster so you can see it joining in the master node
> > logs.
> >
> > --
> > David 😉
> > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> >
> > Le 17 sept. 2014 à 22:31, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
> >
> > Yes.
> > The settings are almost same for all nodes
> >
> > discovery.zen.ping.multicast.enabled: false # this is in
> > elasticsearch.yml
> >
> > -Des.discovery.zen.ping.unicast.hosts= this
> > is java -D parameter
> >
> > Jinyuan (Jack) Zhou
> >
> > On Wed, Sep 17, 2014 at 1:27 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> >
> > > When you start the client node, did you set list of master nodes as
> > > unicast hosts?
> > >
> > > --
> > > David 😉
> > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> > >
> > > Le 17 sept. 2014 Ã 22:13, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a
> > > écrit :
> > >
> > > I am using unicast with out of box zen discovery.
> > >
> > > discovery.zen.ping.multicast.enabled: false
> > >
> > > -Des.discovery.zen.ping.unicast.hosts=
> > >
> > > Jinyuan (Jack) Zhou
> > >
> > > On Wed, Sep 17, 2014 at 1:08 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> > >
> > > > Are you using multicast or unicast or a plugin for discovery?
> > > >
> > > > --
> > > > David 😉
> > > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> > > >
> > > > Le 17 sept. 2014 Ã 21:49, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a
> > > > écrit :
> > > >
> > > > yes. cluster name is set to be the same on all 12 nodes
> > > >
> > > > Jinyuan (Jack) Zhou
> > > >
> > > > On Wed, Sep 17, 2014 at 12:24 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
> > > >
> > > > > Did you set the same cluster name?
> > > > >
> > > > > --
> > > > > David 😉
> > > > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> > > > >
> > > > > Le 17 sept. 2014 Ã 21:09, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a
> > > > > écrit :
> > > > >
> > > > > Sorry I didn't explain clearly. I have a cluster with 12 nodes. 10
> > > > > are master eligible. 2 are client only (es.node.data=false,
> > > > > es.node.master=false). I have configured the minimal number of nodes to
> > > > > form a cluster is 6. all the boxes hosting 12 es instances are on the same
> > > > > rack. The problem is that these two client-only nodes cannot join the
> > > > > cluster. It cannot discovers the master. But if I make them master eligible
> > > > > it discover the master node immediately.
> > > > > I don't understand what make the differences.
> > > > > Thanks,
> > > > > Jack
> > > > >
> > > > > Jinyuan (Jack) Zhou
> > > > >
> > > > > On Wed, Sep 17, 2014 at 11:54 AM, David Pilato [david@pilato.fr](mailto:david@pilato.fr)
> > > > > wrote:
> > > > >
> > > > > > A cluster needs a master node.
> > > > > >
> > > > > > You need at least one node which could be elected as master.
> > > > > >
> > > > > > --
> > > > > > David 😉
> > > > > > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
> > > > > >
> > > > > > Le 17 sept. 2014 Ã 20:08, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a
> > > > > > écrit :
> > > > > >
> > > > > > I have two nodes with this configuration -Des.node.data=false
> > > > > > -Des.node.master=false when I start. But these nodes have experiencing
> > > > > > finding master node. Here is message.
> > > > > >
> > > > > > [2014-09-17 16:51:10,457][WARN][discovery]
> > > > > > [mynodename] waited for 30s and no initial state was set by the discovery
> > > > > >
> > > > > > However, If I remove -Des.node.master=false.
> > > > > >
> > > > > > The discovery have no issue.
> > > > > >
> > > > > > Thanks,
> > > > > >
> > > > > > Jack
> > > > > >
> > > > > > --
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### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 19, 2014, 6:20am UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/14 "2014-09-19T06:20:28Z")
It was immediate on my laptop.
--
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[david.pilato@elasticsearch.com](mailto:david.pilato@elasticsearch.com)
@dadoonet | @elasticsearchfr | @scrutmydocs
Le 18 septembre 2014 à 17:32:18, Jinyuan Zhou ([zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com)) a écrit:
David,
Thanks for taking time to look at my issue. My issue is probably too slow to find a master node to join. I was wondering if non master eligible nodes takes longer to find a master node. May be some time out happened. I was looking for some parameters to allow more time to find a master node. I played with discovery.zen.fd.ping\_timeout. I set it 90 seconds (default is 30s). It didn't make a difference. The message still says "waited for 30s and no initial state was set by the discovery".
Regards,
Jack
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 11:39 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
Ok. I tried to reproduce it on elasticsearch 1.3.2.
First node started:
bin/elasticsearch -Ddiscovery.zen.ping.multicast.enabled=false -Des.discovery.zen.ping.unicast.hosts=localhost
[2014-09-18 08:36:05,417][INFO][cluster.service] [Crusader] new\_master [Crusader][i3SU0cwSQeizbN\_MUqAXSw][MacBook-Air-de-David.local][inet[/192.168.0.15:9300]], reason: zen-disco-join (elected\_as\_master)
Second node (client):
bin/elasticsearch -Ddiscovery.zen.ping.multicast.enabled=false -Des.discovery.zen.ping.unicast.hosts=localhost -Des.node.data=false -Des.node.master=false
[2014-09-18 08:36:36,444][INFO][cluster.service] [Sekhmet] detected\_master [Crusader][i3SU0cwSQeizbN\_MUqAXSw][MacBook-Air-de-David.local][inet[/192.168.0.15:9300]], added {[Crusader][i3SU0cwSQeizbN\_MUqAXSw][MacBook-Air-de-David.local][inet[/192.168.0.15:9300]],}, reason: zen-disco-receive(from master [[Crusader][i3SU0cwSQeizbN\_MUqAXSw][MacBook-Air-de-David.local][inet[/192.168.0.15:9300]]])
So to me everything is working fine.
I don't understand what you are exactly doing. May be you should try to change logging.yml to DEBUG or TRACE and see what's going on in your client node.
--
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Le 18 septembre 2014 à 02:54:31, Jinyuan Zhou ([zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com)) a écrit:
yes.
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 5:52 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
And when you remove -Des.node.master=false the client node is able to join the cluster?
I mean "join" the cluster so you can see it joining in the master node logs.
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Le 17 sept. 2014 à 22:31, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
Yes.
The settings are almost same for all nodes
discovery.zen.ping.multicast.enabled: false # this is in elasticsearch.yml
-Des.discovery.zen.ping.unicast.hosts= this is java -D parameter
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 1:27 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
When you start the client node, did you set list of master nodes as unicast hosts?
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Le 17 sept. 2014 à 22:13, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
I am using unicast with out of box zen discovery.
discovery.zen.ping.multicast.enabled: false
-Des.discovery.zen.ping.unicast.hosts=
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 1:08 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
Are you using multicast or unicast or a plugin for discovery?
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Le 17 sept. 2014 à 21:49, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
yes. cluster name is set to be the same on all 12 nodes
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 12:24 PM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
Did you set the same cluster name?
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Le 17 sept. 2014 à 21:09, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
Sorry I didn't explain clearly. I have a cluster with 12 nodes. 10 are master eligible. 2 are client only (es.node.data=false, es.node.master=false). I have configured the minimal number of nodes to form a cluster is 6. all the boxes hosting 12 es instances are on the same rack. The problem is that these two client-only nodes cannot join the cluster. It cannot discovers the master. But if I make them master eligible it discover the master node immediately.
I don't understand what make the differences.
Thanks,
Jack
Jinyuan (Jack) Zhou
On Wed, Sep 17, 2014 at 11:54 AM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote:
A cluster needs a master node.
You need at least one node which could be elected as master.
--
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Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs
Le 17 sept. 2014 à 20:08, Jinyuan Zhou [zhou.jinyuan@gmail.com](mailto:zhou.jinyuan@gmail.com) a écrit :
I have two nodes with this configuration -Des.node.data=false -Des.node.master=false when I start. But these nodes have experiencing finding master node. Here is message.
[2014-09-17 16:51:10,457][WARN][discovery] [mynodename] waited for 30s and no initial state was set by the discovery
However, If I remove -Des.node.master=false.
The discovery have no issue.
Thanks,
Jack
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 1:01am UTC](https://discuss.elastic.co/t/any-zen-discovery-difference-between-master-eligible-and-non-eligible-nodes/19849/15 "2017-07-06T01:01:07Z")