# Unable to Start Elasticsearch after installation **URL:** \ **Category:** Elasticsearch\ **Created:** [October 25, 2018, 10:34am UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-after-installation/153971 "2018-10-25T10:34:32Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Micheal25](https://avatars.discourse-cdn.com/v4/letter/m/df788c/32.png) [@Micheal25](https://discuss.elastic.co/u/Micheal25)\ **Post date:** [October 25, 2018, 10:34am UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-after-installation/153971/1 "2018-10-25T10:34:32Z")
Hello Team, I have installed the new rpm package( v6.4.2) on to a Redhat linux 7 machine, after the installation, i changes the path.data and path.log to custom location and changed the ES\_tempdir to customized location After above two changes,i tried the systemctl start elasticsearch.service but i don't see any evidence of elasticsearch started in that server, am i missing any other config changes here. Please advise... ---
**Author:** ![fkelbert](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/fkelbert/32/35762_2.png) [@fkelbert](https://discuss.elastic.co/u/fkelbert)\ **Post date:** [October 25, 2018, 1:03pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-after-installation/153971/2 "2018-10-25T13:03:44Z")
What do you see in the logs? ---
**Author:** ![Micheal25](https://avatars.discourse-cdn.com/v4/letter/m/df788c/32.png) [@Micheal25](https://discuss.elastic.co/u/Micheal25)\ **Post date:** [October 26, 2018, 4:59am UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-after-installation/153971/3 "2018-10-26T04:59:05Z")
I see wide variety of them, most annoying one is mentioned below. [root@xxxxxxxxxx elasticsearch]# bin/elasticsearch Error: Could not find or load main class .etc.elasticsearch ---
**Author:** ![fkelbert](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/fkelbert/32/35762_2.png) [@fkelbert](https://discuss.elastic.co/u/fkelbert)\ **Post date:** [October 26, 2018, 8:41am UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-after-installation/153971/4 "2018-10-26T08:41:08Z")
It would be good to understand: - What does your config file look like, exactly? - Do the mentioned paths exist? - Do the corresponding have appropriate permissions? - What is the full relevant output of the log? ---
**Author:** ![Micheal25](https://avatars.discourse-cdn.com/v4/letter/m/df788c/32.png) [@Micheal25](https://discuss.elastic.co/u/Micheal25)\ **Post date:** [October 26, 2018, 10:48am UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-after-installation/153971/5 "2018-10-26T10:48:54Z")
ok, I haven't done much changes to my config yet.. I also didn't change the default path.data and path.log in eleasticsearch.yml Also everytime i trigger "systemctl start elasticsearch.service", i dont see any log files getting generated under the /var/log/elasticsearch. I am able to some hint on the sattus through the journalctf tail Next, I am trying to execute the service via root user, which is explictiy confirm at time, so i going to create a new user "elasticsearch" and group for the same now. I will create the user and try the execution once and confirm the output. ---
**Author:** ![Micheal25](https://avatars.discourse-cdn.com/v4/letter/m/df788c/32.png) [@Micheal25](https://discuss.elastic.co/u/Micheal25)\ **Post date:** [October 26, 2018, 1:24pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-after-installation/153971/6 "2018-10-26T13:24:14Z")
No luck yet, still getting the below error after doing the changes.. ``` bash-4.2$ bin/elasticsearch Error: Could not find or load main class .etc.elasticsearch ``` output from journalctl ``` Oct 26 06:23:40 RCOVLNX3403.corp.frk.com systemd[1]: Started Elasticsearch. Oct 26 06:23:40 RCOVLNX3403.corp.frk.com systemd[1]: Starting Elasticsearch... Oct 26 06:23:40 RCOVLNX3403.corp.frk.com polkitd[846]: Unregistered Authentication Agent for unix-process:94895:131135418 (system bus name :1.8406, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from bus) Oct 26 06:23:51 RCOVLNX3403.corp.frk.com elasticsearch[94901]: Error: Could not find or load main class .etc.elasticsearch Oct 26 06:23:51 RCOVLNX3403.corp.frk.com systemd[1]: elasticsearch.service: main process exited, code=exited, status=1/FAILURE Oct 26 06:23:51 RCOVLNX3403.corp.frk.com systemd[1]: Unit elasticsearch.service entered failed state. Oct 26 06:23:51 RCOVLNX3403.corp.frk.com systemd[1]: elasticsearch.service failed. ``` ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [November 23, 2018, 1:24pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-after-installation/153971/7 "2018-11-23T13:24:18Z")
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