# Start ES on Centos 7.4 problem **URL:** \ **Category:** Elasticsearch\ **Created:** [March 27, 2018, 7:45am UTC](https://discuss.elastic.co/t/start-es-on-centos-7-4-problem/125709 "2018-03-27T07:45:56Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Mojster](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mojster/32/21209_2.png) [@Mojster](https://discuss.elastic.co/u/Mojster)\ **Post date:** [March 27, 2018, 7:45am UTC](https://discuss.elastic.co/t/start-es-on-centos-7-4-problem/125709/1 "2018-03-27T07:45:57Z")
I'm running ES 6.2.3 stack on Windows server for more then half a year. Now when ma stack is fully configured and running, we've decided to move to Centos. So far I've installed ES and KB with X-Pack. KB is working, but I have some problems with ES. I've installed both according to official guide. If I run ES `sudo bin/elasticsearch` I get: ```auto [2018-03-27T09:37:51,455][WARN][o.e.b.ElasticsearchUncaughtExceptionHandler] [cheshire_cat] uncaught exception in thread [main] org.elasticsearch.bootstrap.StartupException: java.lang.RuntimeException: can not run elasticsearch as root at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:125) ~[elasticsearch-6.2.3.jar:6.2.3] at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:112) ~[elasticsearch-6.2.3.jar:6.2.3] at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-6.2.3.jar:6.2.3] at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-6.2.3.jar:6.2.3] at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-6.2.3.jar:6.2.3] at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) ~[elasticsearch-6.2.3.jar:6.2.3] at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:85) ~[elasticsearch-6.2.3.jar:6.2.3] Caused by: java.lang.RuntimeException: can not run elasticsearch as root at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:105) ~[elasticsearch-6.2.3.jar:6.2.3] at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:172) ~[elasticsearch-6.2.3.jar:6.2.3] at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:323) ~[elasticsearch-6.2.3.jar:6.2.3] at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:121) ~[elasticsearch-6.2.3.jar:6.2.3] ... 6 more ``` And if I run it `bin/elasticsearch` I get a lot of errors with insufficient rights. This is for me quite logical becaut the log folder have o/g `elasticsearch`. But I still cannot figure out what is a proper way to run ES. Can someone guide me. ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [March 27, 2018, 8:24am UTC](https://discuss.elastic.co/t/start-es-on-centos-7-4-problem/125709/2 "2018-03-27T08:24:07Z")
> [@Mojster](#): > > can not run elasticsearch as root See [Scripting and security | Elasticsearch Reference [6.2] | Elastic](https://www.elastic.co/guide/en/elasticsearch/reference/6.2/modules-scripting-security.html#_do_not_run_as_root). ---
**Author:** ![Mojster](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mojster/32/21209_2.png) [@Mojster](https://discuss.elastic.co/u/Mojster)\ **Post date:** [March 27, 2018, 8:34am UTC](https://discuss.elastic.co/t/start-es-on-centos-7-4-problem/125709/3 "2018-03-27T08:34:10Z")
Thanks, got it. So no `sudo` in the run command. But I've tried to run it without `sudo` and I get a bunch of errors. As I suggested, this could be, because I'm running it in console from my userprofile. So how can I run it as `elasticsearch` user. I've also installed ES as service: [https://www.elastic.co/guide/en/elasticsearch/reference/current/rpm.html#rpm-running-systemd](https://www.elastic.co/guide/en/elasticsearch/reference/current/rpm.html#rpm-running-systemd) If i run it using `sudo systemctl start elasticsearch.service` I get nothing. Logs are empty. `/var/log/elasticsearch` has only gc.log.0.current. ---
**Author:** ![Mojster](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mojster/32/21209_2.png) [@Mojster](https://discuss.elastic.co/u/Mojster)\ **Post date:** [March 28, 2018, 5:29am UTC](https://discuss.elastic.co/t/start-es-on-centos-7-4-problem/125709/4 "2018-03-28T05:29:17Z")
I've removed it all. And make a clean install. By default it was working. And now I'm doing it step by step. 1.When I set `network.host` to elastic1.domain.xy it won't start again. I get a message about `non-loopback address`. And yes, before I get it here. I've read the [Boostrap Checks](https://www.elastic.co/guide/en/elasticsearch/reference/6.2/bootstrap-checks.html) but still it has only an explanation and not a guide to fix this. @warkolm: Would you be so kind, to advice me further. Thanks. ---
**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:** [March 28, 2018, 6:32am UTC](https://discuss.elastic.co/t/start-es-on-centos-7-4-problem/125709/5 "2018-03-28T06:32:26Z")
What is the exact trace you are getting? ---
**Author:** ![Mojster](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mojster/32/21209_2.png) [@Mojster](https://discuss.elastic.co/u/Mojster)\ **Post date:** [March 28, 2018, 6:45am UTC](https://discuss.elastic.co/t/start-es-on-centos-7-4-problem/125709/6 "2018-03-28T06:45:17Z")
Got it. I've added `127.0.0.1 elastic1.domain.xy` to /etc/hosts and now it's working. And now to my next step 🙂 ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [April 25, 2018, 6:45am UTC](https://discuss.elastic.co/t/start-es-on-centos-7-4-problem/125709/7 "2018-04-25T06:45:23Z")
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