# Cold data node is not starting after restart the ES service 7.7.0
**URL:** https://discuss.elastic.co/t/cold-data-node-is-not-starting-after-restart-the-es-service-7-7-0/281474
**Category:** Elasticsearch
**Created:** [August 15, 2021, 7:32am UTC](https://discuss.elastic.co/t/cold-data-node-is-not-starting-after-restart-the-es-service-7-7-0/281474 "2021-08-15T07:32:09Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@alicango](https://discuss.elastic.co/u/alicango)
#### Post date: [August 15, 2021, 7:32am UTC](https://discuss.elastic.co/t/cold-data-node-is-not-starting-after-restart-the-es-service-7-7-0/281474/1 "2021-08-15T07:32:09Z")
Hi,
I am getting below exception after restart the ES service;
```auto
journalctl -xe
```
```auto
systemd-entrypoint[4842]: Exception in thread "main" org.apache.lucene.index.CorruptIndexException: codec header mismatch: actual header=1071082590 vs expected header=10710>
systemd-entrypoint[4842]: at org.apache.lucene.codecs.CodecUtil.checkHeader(CodecUtil.java:196)
systemd-entrypoint[4842]: at org.elasticsearch.common.settings.KeyStoreWrapper.load(KeyStoreWrapper.java:224)
systemd-entrypoint[4842]: at org.elasticsearch.common.settings.HasPasswordKeyStoreCommand.execute(HasPasswordKeyStoreCommand.java:42)
Aug 15 08:15:01 lon-elk-cold-1 systemd-entrypoint[4842]: at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86)
systemd-entrypoint[4842]: at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:127)
systemd-entrypoint[4842]: at org.elasticsearch.cli.MultiCommand.execute(MultiCommand.java:91)
systemd-entrypoint[4842]: at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:127)
systemd-entrypoint[4842]: at org.elasticsearch.cli.Command.main(Command.java:90)
systemd-entrypoint[4842]: at org.elasticsearch.common.settings.KeyStoreCli.main(KeyStoreCli.java:43)
systemd-entrypoint[4842]: Exception in thread "main" org.elasticsearch.bootstrap.BootstrapException: org.apache.lucene.index.CorruptIndexException: codec header mismatch: a>
Aug 15 08:15:02 lon-elk-cold-1 systemd-entrypoint[4842]: Likely root cause: org.apache.lucene.index.CorruptIndexException: codec header mismatch: actual header=1071082590 vs expected header=1071082519 (r>
systemd-entrypoint[4842]: at org.apache.lucene.codecs.CodecUtil.checkHeader(CodecUtil.java:196)
systemd-entrypoint[4842]: at org.elasticsearch.common.settings.KeyStoreWrapper.load(KeyStoreWrapper.java:224)
systemd-entrypoint[4842]: at org.elasticsearch.bootstrap.Bootstrap.loadSecureSettings(Bootstrap.java:240)
systemd-entrypoint[4842]: at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:349)
systemd-entrypoint[4842]: at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:170)
systemd-entrypoint[4842]: at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:161)
systemd-entrypoint[4842]: at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86)
systemd-entrypoint[4842]: at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:127)
systemd-entrypoint[4842]: at org.elasticsearch.cli.Command.main(Command.java:90)
systemd-entrypoint[4842]: at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:126)
systemd-entrypoint[4842]: at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92)
systemd[1]: elasticsearch.service: Main process exited, code=exited, status=1/FAILURE
systemd[1]: elasticsearch.service: Failed with result 'exit-code'.
systemd[1]: Failed to start Elasticsearch.
-- Subject: Unit elasticsearch.service has failed
```
Do you prefer to reinstall the ES?
---
### Author:  [@alicango](https://discuss.elastic.co/u/alicango)
#### Post date: [August 15, 2021, 8:17am UTC](https://discuss.elastic.co/t/cold-data-node-is-not-starting-after-restart-the-es-service-7-7-0/281474/3 "2021-08-15T08:17:59Z")
Thanks for the experience but no need to reduce them for my case. I have plenty of RAM and Disk size.
---
### Author:  [@alicango](https://discuss.elastic.co/u/alicango)
#### Post date: [August 15, 2021, 10:29am UTC](https://discuss.elastic.co/t/cold-data-node-is-not-starting-after-restart-the-es-service-7-7-0/281474/4 "2021-08-15T10:29:51Z")
Hi we solved by apply these steps;
```auto
/usr/share/elasticsearch/bin/elasticsearch-keystore create -p
/usr/share/elasticsearch/bin/elasticsearch-keystore passwd
systemctl restart elasticsearch
```
Thanks
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [September 12, 2021, 10:30am UTC](https://discuss.elastic.co/t/cold-data-node-is-not-starting-after-restart-the-es-service-7-7-0/281474/5 "2021-09-12T10:30:32Z")
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