# Error in XPACK elasicsearch **URL:** \ **Category:** Elasticsearch\ **Created:** [December 5, 2017, 10:01pm UTC](https://discuss.elastic.co/t/error-in-xpack-elasicsearch/110428 "2017-12-05T22:01:21Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Vivek\_Nigam](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/vivek_nigam/32/25094_2.png) [@Vivek\_Nigam](https://discuss.elastic.co/u/Vivek_Nigam)\ **Post date:** [December 5, 2017, 10:01pm UTC](https://discuss.elastic.co/t/error-in-xpack-elasicsearch/110428/1 "2017-12-05T22:01:21Z")
While running XPack elasicserch getting following error: ./elasticsearch [2017-12-06T03:18:26,851][INFO][o.e.n.Node] [] initializing ... [2017-12-06T03:18:26,883][WARN][o.e.b.ElasticsearchUncaughtExceptionHandler] [] uncaught exception in thread [main] org.elasticsearch.bootstrap.StartupException: java.lang.IllegalStateException: failed to obtain node locks, tried [[/home/elkstack/elasticsearch-6.0.0/data/elasticsearch]] with lock id [0]; maybe these locations are not writable or multiple nodes were started without increasing [node.max\_local\_storage\_nodes] (was [1])? at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:134) ~[elasticsearch-6.0.0.jar:6.0.0] ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [December 5, 2017, 10:35pm UTC](https://discuss.elastic.co/t/error-in-xpack-elasicsearch/110428/2 "2017-12-05T22:35:03Z")
Most of the time this is happening when you start by mistake 2 instances of elasticsearch using the same data folder. Check what is running. ---
**Author:** ![Vivek\_Nigam](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/vivek_nigam/32/25094_2.png) [@Vivek\_Nigam](https://discuss.elastic.co/u/Vivek_Nigam)\ **Post date:** [December 5, 2017, 10:45pm UTC](https://discuss.elastic.co/t/error-in-xpack-elasicsearch/110428/3 "2017-12-05T22:45:06Z")
hi , following files available under given locations: /home/elkstack/elasticsearch-6.0.0/data/nodes/0 drwxrwxrwx 13 nds nds 4096 Dec 5 05:31 **indices** -rwxrwxrwx 1 nds nds 0 Dec 5 00:34 **node.lock** drwxrwxrwx 2 nds nds 41 Dec 5 04:03 **\_state** ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [December 5, 2017, 11:13pm UTC](https://discuss.elastic.co/t/error-in-xpack-elasicsearch/110428/4 "2017-12-05T23:13:27Z")
Yes. But are the running processes? ---
**Author:** ![zqc0512](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/zqc0512/32/32141_2.png) [@zqc0512](https://discuss.elastic.co/u/zqc0512)\ **Post date:** [December 6, 2017, 12:54am UTC](https://discuss.elastic.co/t/error-in-xpack-elasicsearch/110428/5 "2017-12-06T00:54:53Z")
stop all es and start. like running two es instances. ---
**Author:** ![Vivek\_Nigam](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/vivek_nigam/32/25094_2.png) [@Vivek\_Nigam](https://discuss.elastic.co/u/Vivek_Nigam)\ **Post date:** [December 6, 2017, 1:21am UTC](https://discuss.elastic.co/t/error-in-xpack-elasicsearch/110428/6 "2017-12-06T01:21:47Z")
Please help me to check all running process in elasticsearch 6 Also how to stop the running process. i check through following command: [root@elkstack \_state]# ps aux | grep 'elastic' root 3649 0.0 0.0 112644 952 pts/4 S+ 06:48 0:00 grep --color=auto elastic ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [January 3, 2018, 1:22am UTC](https://discuss.elastic.co/t/error-in-xpack-elasicsearch/110428/7 "2018-01-03T01:22:01Z")
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