# MasterNotDiscoveredException on client **URL:** \ **Category:** Elasticsearch\ **Created:** [July 20, 2012, 1:53am UTC](https://discuss.elastic.co/t/masternotdiscoveredexception-on-client/8472 "2012-07-20T01:53:35Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![arta](https://avatars.discourse-cdn.com/v4/letter/a/aca169/32.png) [@arta](https://discuss.elastic.co/u/arta)\ **Post date:** [July 20, 2012, 1:53am UTC](https://discuss.elastic.co/t/masternotdiscoveredexception-on-client/8472/1 "2012-07-20T01:53:35Z")
Hi, My client seems not able to connect to elasticsearch cluster (0.19.3). Here's client log: DEBUG;[zen.ping.multicast:94][main] [Jester] using group [224.2.2.4], with port [54328], ttl [3], and address [null] DEBUG;[zen.ping.unicast:94][main] [Jester] using initial hosts [], with concurrent\_connects [10] DEBUG;[elasticsearch.discovery.zen:94][main] [Jester] using ping.timeout [2m] DEBUG;[discovery.zen.elect:94][main] [Jester] using minimum\_master\_nodes [-1] DEBUG;[discovery.zen.fd:94][main] [Jester] [master] uses ping\_interval [1s], ping\_timeout [30s], ping\_retries [3] DEBUG;[discovery.zen.fd:94][main] [Jester] [node] uses ping\_interval [1s], ping\_timeout [30s], ping\_retries [3] WARN;[org.elasticsearch.discovery:114][main] [Jester] waited for 30s and no initial state was set by the discovery INFO;[search.analyzer.ElasticSearchIndexer:180][main] Search cluster qa-search01 ERROR;[search.analyzer.ElasticSearchIndexer:205][main] org.elasticsearch.discovery.MasterNotDiscoveredException: waited for [30s] Here's server log: [TRACE][discovery.zen.ping.multicast] [Proteus] [1] received ping\_request from [[Jester][mVQxLCYzSQugPNA4P3T4Yg][inet[/10.3.5.21:9300]]{client=true, data=false}], sending ping\_response{target [[Proteus][\_G945VyASLyJ2FrxRs\_x7g][inet[/10.3.5.109:9300]]], master [[Proteus][\_G945VyASLyJ2FrxRs\_x7g][inet[/10.3.5.109:9300]]], cluster\_name[qa-search01]} It seems like the server "Proteus" received the ping request from the client "Jester" and responded, but the client timed out (30 sec). Is there anywhere else I should look at to investigate what is happening? Thanks for your help! ---
**Author:** ![arta](https://avatars.discourse-cdn.com/v4/letter/a/aca169/32.png) [@arta](https://discuss.elastic.co/u/arta)\ **Post date:** [July 20, 2012, 8:09pm UTC](https://discuss.elastic.co/t/masternotdiscoveredexception-on-client/8472/2 "2012-07-20T20:09:22Z")
It is solved by adding '-Djava.net.preferIPv4Stack=true' to java command that starts the client. Before adding this, the multicast ping sent by the client had ttl=1, and after adding this, the ttl=3. I don't know why this was needed, but it works now. Further question: - how can I change client setting, such as multicast ttl? I think ttl=3 is the default. How can I change? Can that be fed into NodeBuilder.settings(Settings)? If so, will that be ImmutableSettings.settingsBuilder().put("discovery.zen.ping.multicast.ttl", 4)? How about "discoverty.zen.ping\_timeout"? Can it be set by the same way? Thank you for your help. ---
**Author:** ![Igor\_Motov](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/igor_motov/32/45193_2.png) [@Igor\_Motov](https://discuss.elastic.co/u/Igor_Motov)\ **Post date:** [July 20, 2012, 8:26pm UTC](https://discuss.elastic.co/t/masternotdiscoveredexception-on-client/8472/3 "2012-07-20T20:26:46Z")
You can build all your settings using settingsBuilder and then pass them to TransportClient: Settings settings = ImmutableSettings.settingsBuilder() .put("discovery.zen.ping.multicast.ttl", 4) .put("client.transport.ping\_timeout", "10s") .put("cluster.name", "my\_cluster") .build(); TransportClient client = new TransportClient(settings); On Friday, July 20, 2012 4:09:22 PM UTC-4, arta wrote: > It is solved by adding '-Djava.net.preferIPv4Stack=true' to java command > that > starts the client. > Before adding this, the multicast ping sent by the client had ttl=1, and > after adding this, the ttl=3. > I don't know why this was needed, but it works now. > > Further question: > > - how can I change client setting, such as multicast ttl? > I think ttl=3 is the default. How can I change? > > Can that be fed into NodeBuilder.settings(Settings)? > If so, will that be > ImmutableSettings.settingsBuilder().put("discovery.zen.ping.multicast.ttl", > > 4)? > How about "discoverty.zen.ping\_timeout"? Can it be set by the same way? > > Thank you for your help. > > -- > View this message in context: > [http://elasticsearch-users.115913.n3.nabble.com/MasterNotDiscoveredException-on-client-tp4020605p4020656.html](http://elasticsearch-users.115913.n3.nabble.com/MasterNotDiscoveredException-on-client-tp4020605p4020656.html) > Sent from the Elasticsearch Users mailing list archive at [Nabble.com](http://Nabble.com). ---
**Author:** ![arta](https://avatars.discourse-cdn.com/v4/letter/a/aca169/32.png) [@arta](https://discuss.elastic.co/u/arta)\ **Post date:** [July 20, 2012, 10:27pm UTC](https://discuss.elastic.co/t/masternotdiscoveredexception-on-client/8472/4 "2012-07-20T22:27:58Z")
Thank you Igor. What if I use 'Node node = NodeBuilder.nodeBuilder().client(true).node();' ? I can't find any place I can feed ImmutableSettings in. ---
**Author:** ![Igor\_Motov](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/igor_motov/32/45193_2.png) [@Igor\_Motov](https://discuss.elastic.co/u/Igor_Motov)\ **Post date:** [July 20, 2012, 10:35pm UTC](https://discuss.elastic.co/t/masternotdiscoveredexception-on-client/8472/5 "2012-07-20T22:35:24Z")
``` Node node = NodeBuilder .nodeBuilder() .client(true) .settings(settings) .node(); ``` On Friday, July 20, 2012 6:27:58 PM UTC-4, arta wrote: > Thank you Igor. > What if I use 'Node node = NodeBuilder.nodeBuilder().client(true).node();' > ? > I can't find any place I can feed ImmutableSettings in. > > -- > View this message in context: > [http://elasticsearch-users.115913.n3.nabble.com/MasterNotDiscoveredException-on-client-tp4020605p4020662.html](http://elasticsearch-users.115913.n3.nabble.com/MasterNotDiscoveredException-on-client-tp4020605p4020662.html) > Sent from the Elasticsearch Users mailing list archive at [Nabble.com](http://Nabble.com). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 3:19am UTC](https://discuss.elastic.co/t/masternotdiscoveredexception-on-client/8472/6 "2017-07-06T03:19:35Z")