# Cannot connect to the Elasticsearch 6.4 after upgrade 6.3 to 6.4

**URL:** <https://discuss.elastic.co/t/cannot-connect-to-the-elasticsearch-6-4-after-upgrade-6-3-to-6-4/149560>\
**Category:** Elasticsearch\
**Created:** [September 22, 2018, 5:09pm UTC](https://discuss.elastic.co/t/cannot-connect-to-the-elasticsearch-6-4-after-upgrade-6-3-to-6-4/149560 "2018-09-22T17:09:19Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Mheni](https://avatars.discourse-cdn.com/v4/letter/m/5daacb/32.png) [@Mheni](https://discuss.elastic.co/u/Mheni)\
**Post date:** [September 22, 2018, 5:09pm UTC](https://discuss.elastic.co/t/cannot-connect-to-the-elasticsearch-6-4-after-upgrade-6-3-to-6-4/149560/1 "2018-09-22T17:09:19Z")

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I tryed to upgrade ElasticSearch from 6.3 to 6.4, my elasticsearch.repo file contain

* * *

[elasticsearch-6.x]  
name=Elasticsearch repository for 6.x packages  
baseurl=https://artifacts.elastic.co/packages/6.x/yum  
gpgcheck=1  
gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch  
enabled=1  
autorefresh=1  
type=rpm-md

* * *

I executed $sudo yum install elasticseach command but elasticsearch do not run...!!!!  
with status like this:  
elasticsearch dead but subsys locked after 2s

* * *

Starting elasticsearch: [OK]  
[me]$ sudo -i service elasticsearch status  
elasticsearch (pid 11545) is running...  
[me]$ sudo -i service elasticsearch status  
elasticsearch dead but subsys locked

* * *

my elasticsearch.yml contains these lines:

* * *

cluster.name: my-application  
path.data: /var/lib/elasticsearch  
path.logs: /var/log/elasticsearch  
path.conf: /etc/elasticsearch  
network.host: localhost  
http.port: 9200

* * *

I have many index in my old elastic version (6.3)  
I Need help please

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**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:** [September 24, 2018, 12:15pm UTC](https://discuss.elastic.co/t/cannot-connect-to-the-elasticsearch-6-4-after-upgrade-6-3-to-6-4/149560/2 "2018-09-24T12:15:08Z")

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Hi Maher,

Have you looked into the issue/solution decribed [here](https://discuss.elastic.co/t/elasticsearch-dead-but-subsys-locked/19355)?

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**Author:** ![Mheni](https://avatars.discourse-cdn.com/v4/letter/m/5daacb/32.png) [@Mheni](https://discuss.elastic.co/u/Mheni)\
**Post date:** [September 24, 2018, 1:20pm UTC](https://discuss.elastic.co/t/cannot-connect-to-the-elasticsearch-6-4-after-upgrade-6-3-to-6-4/149560/3 "2018-09-24T13:20:01Z")

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Thank you fkelert,  
Problem has been fixed, I removed with yum remove elasticsearch and reinstall with yum install and all indexes are always kept

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**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:** [September 25, 2018, 10:03am UTC](https://discuss.elastic.co/t/cannot-connect-to-the-elasticsearch-6-4-after-upgrade-6-3-to-6-4/149560/4 "2018-09-25T10:03:02Z")

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