# Elasticsearch not working post migration of OS
**URL:** https://discuss.elastic.co/t/elasticsearch-not-working-post-migration-of-os/347375
**Category:** Elasticsearch
**Created:** [November 17, 2023, 1:06am UTC](https://discuss.elastic.co/t/elasticsearch-not-working-post-migration-of-os/347375 "2023-11-17T01:06:24Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Techiebee](https://discuss.elastic.co/u/Techiebee)
#### Post date: [November 17, 2023, 1:06am UTC](https://discuss.elastic.co/t/elasticsearch-not-working-post-migration-of-os/347375/1 "2023-11-17T01:06:24Z")
I have migrated my Elasticsearch cluster servers from centos7 to RHEL8 , post migration my cluster isn’t picking the hostname, for every server re-build I have to manually edit the hostname and restart the Elasticsearch service, I have checked to generate the enrolment token but it says no such file or directory, can someone please help @Sunile_Manjee
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### Author:  [@Sunile\_Manjee](https://discuss.elastic.co/u/Sunile_Manjee)
#### Post date: [November 17, 2023, 2:33pm UTC](https://discuss.elastic.co/t/elasticsearch-not-working-post-migration-of-os/347375/2 "2023-11-17T14:33:05Z")
can you please provide log output to help further debug the issue?
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 15, 2023, 2:33pm UTC](https://discuss.elastic.co/t/elasticsearch-not-working-post-migration-of-os/347375/3 "2023-12-15T14:33:59Z")
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