# Discovery and/or Reconnection **URL:** \ **Category:** Elasticsearch\ **Created:** [July 14, 2010, 1:18pm UTC](https://discuss.elastic.co/t/discovery-and-or-reconnection/3096 "2010-07-14T13:18:03Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Kenneth\_Loafman](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kenneth_loafman/32/2224_2.png) [@Kenneth\_Loafman](https://discuss.elastic.co/u/Kenneth_Loafman)\ **Post date:** [July 14, 2010, 1:18pm UTC](https://discuss.elastic.co/t/discovery-and-or-reconnection/3096/1 "2010-07-14T13:18:03Z")
Hi, I've got two nodes running and communicating, or rather I did until the network went down for a long while. Now, I have two independent clusters of one node each. How do I get the nodes to rejoin into a cluster? Does this require a manual service restart? The network has been up and running for an hour now and the logs show no sign of reconnect attempts. ...Thanks, ...Ken ---
**Author:** ![kimchy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kimchy/32/44952_2.png) [@kimchy](https://discuss.elastic.co/u/kimchy)\ **Post date:** [July 14, 2010, 1:24pm UTC](https://discuss.elastic.co/t/discovery-and-or-reconnection/3096/2 "2010-07-14T13:24:18Z")
Yes, currently, the there is no auto join and you simply need to restart the isolated node so it will join back to the cluster. -shay.banon On Wed, Jul 14, 2010 at 4:18 PM, Kenneth Loafman [kenneth.loafman@gmail.com](mailto:kenneth.loafman@gmail.com)wrote: > Hi, > > I've got two nodes running and communicating, or rather I did until the > network went down for a long while. Now, I have two independent > clusters of one node each. How do I get the nodes to rejoin into a > cluster? Does this require a manual service restart? The network has > been up and running for an hour now and the logs show no sign of > reconnect attempts. > > ...Thanks, > ...Ken ---
**Author:** ![John\_Chang](https://avatars.discourse-cdn.com/v4/letter/j/ecc23a/32.png) [@John\_Chang](https://discuss.elastic.co/u/John_Chang)\ **Post date:** [September 1, 2010, 6:09pm UTC](https://discuss.elastic.co/t/discovery-and-or-reconnection/3096/3 "2010-09-01T18:09:21Z")
Was this perhaps fixed in 0.9? Under 0.8, I saw my client (ie no-data) nodes not reconnecting to the main cluster nodes (ie. data nodes) in they went down and came back up. However, now under 0.9, the client nodes seem to magically reconnect if the data nodes go down and come back. Or, if 0.9 doesn't fix this (I'd be surprised...it seems to), how should I handle this? Do I still need to restart the client nodes? Or can I catch exceptions and re-connect (which, actually, I was doing under 0.8 and it seemed to work). Thanks. ---
**Author:** ![kimchy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kimchy/32/44952_2.png) [@kimchy](https://discuss.elastic.co/u/kimchy)\ **Post date:** [September 1, 2010, 6:28pm UTC](https://discuss.elastic.co/t/discovery-and-or-reconnection/3096/4 "2010-09-01T18:28:48Z")
Client nodes do reconnect since 0.9. On Wed, Sep 1, 2010 at 9:09 PM, John Chang [jchangkihtest2@gmail.com](mailto:jchangkihtest2@gmail.com) wrote: > Was this perhaps fixed in 0.9? Under 0.8, I saw my client (ie no-data) > nodes > not reconnecting to the main cluster nodes (ie. data nodes) in they went > down and came back up. However, now under 0.9, the client nodes seem to > magically reconnect if the data nodes go down and come back. > > Or, if 0.9 doesn't fix this (I'd be surprised...it seems to), how should I > handle this? Do I still need to restart the client nodes? Or can I catch > exceptions and re-connect (which, actually, I was doing under 0.8 and it > seemed to work). > > ## Thanks. > > View this message in context: > [http://elasticsearch-users.115913.n3.nabble.com/Discovery-and-or-Reconnection-tp966417p1401924.html](http://elasticsearch-users.115913.n3.nabble.com/Discovery-and-or-Reconnection-tp966417p1401924.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, 4:19am UTC](https://discuss.elastic.co/t/discovery-and-or-reconnection/3096/5 "2017-07-06T04:19:57Z")