# Unable to start elasticsearch 7.11.0

**URL:** <https://discuss.elastic.co/t/unable-to-start-elasticsearch-7-11-0/326342>\
**Category:** Elasticsearch\
**Created:** [February 23, 2023, 3:44pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-7-11-0/326342 "2023-02-23T15:44:29Z")\
**Posts on this page:** 8\
**Page:** 1

<div class="post-metadata">

**Author:** ![anandgavai](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/anandgavai/32/117670_2.png) [@anandgavai](https://discuss.elastic.co/u/anandgavai)\
**Post date:** [February 23, 2023, 3:44pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-7-11-0/326342/1 "2023-02-23T15:44:29Z")

</div>

Hi there,  
am getting an ElasticsearchUncaughtExceptionHandler error and not able to start elasticsearch. All I know was there was there was an abrupt shutdown of my server and since then am not able to start the elasticsearch node. The log files are below

```auto

org.elasticsearch.bootstrap.StartupException: java.lang.IllegalStateException: jar hell!

class: org.elasticsearch.tools.java_version_checker.JavaVersion

jar1: /Users/anandgavai/Documents/elasticDevelopment/elasticsearch-7.11.0/lib/java-version-checker-7.11.0.jar

jar2: /Users/anandgavai/Documents/elasticDevelopment/elasticsearch-7.11.0/lib/java-version-checker-7.11.0 2.jar

at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:163) ~[elasticsearch-7.11.0.jar:7.11.0]

at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150) ~[elasticsearch-7.11.0.jar:7.11.0]

at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:75) ~[elasticsearch-7.11.0.jar:7.11.0]

at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:116) ~[elasticsearch-cli-7.11.0%202.jar:7.11.0]

at org.elasticsearch.cli.Command.main(Command.java:79) ~[elasticsearch-cli-7.11.0%202.jar:7.11.0]

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:115) ~[elasticsearch-7.11.0.jar:7.11.0]

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:81) ~[elasticsearch-7.11.0.jar:7.11.0]

Caused by: java.lang.IllegalStateException: jar hell!

class: org.elasticsearch.tools.java_version_checker.JavaVersion

jar1: /Users/anandgavai/Documents/elasticDevelopment/elasticsearch-7.11.0/lib/java-version-checker-7.11.0.jar

jar2: /Users/anandgavai/Documents/elasticDevelopment/elasticsearch-7.11.0/lib/java-version-checker-7.11.0 2.jar

at org.elasticsearch.bootstrap.JarHell.checkClass(JarHell.java:276) ~[elasticsearch-core-7.11.0.jar:7.11.0]

at org.elasticsearch.bootstrap.JarHell.checkJarHell(JarHell.java:184) ~[elasticsearch-core-7.11.0.jar:7.11.0]

at org.elasticsearch.bootstrap.JarHell.checkJarHell(JarHell.java:75) ~[elasticsearch-core-7.11.0.jar:7.11.0]

at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:201) ~[elasticsearch-7.11.0.jar:7.11.0]

at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:387) ~[elasticsearch-7.11.0.jar:7.11.0]

at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159) ~[elasticsearch-7.11.0.jar:7.11.0]

... 6 more

uncaught exception in thread [main]

java.lang.IllegalStateException: jar hell!

class: org.elasticsearch.tools.java_version_checker.JavaVersion

jar1: /Users/anandgavai/Documents/elasticDevelopment/elasticsearch-7.11.0/lib/java-version-checker-7.11.0.jar

jar2: /Users/anandgavai/Documents/elasticDevelopment/elasticsearch-7.11.0/lib/java-version-checker-7.11.0 2.jar

at org.elasticsearch.bootstrap.JarHell.checkClass(JarHell.java:276)

at org.elasticsearch.bootstrap.JarHell.checkJarHell(JarHell.java:184)

at org.elasticsearch.bootstrap.JarHell.checkJarHell(JarHell.java:75)

at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:201)

at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:387)

at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159)

at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150)

at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:75)

at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:116)

at org.elasticsearch.cli.Command.main(Command.java:79)

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:115)

at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:81)

For complete error details, refer to the log at /Users/anandgavai/Documents/elasticDevelopment/elasticsearch-7.11.0/logs/elasticsearch.log

```

Any leades would be great.

regards,  
Anand

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 23, 2023, 3:44pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-7-11-0/326342/2 "2023-02-23T15:44:29Z")

</div>

elasticsearch 7.11 is [EOL](https://www.elastic.co/support/eol) and no longer supported. Please upgrade ASAP.

(This is an automated response from your friendly Elastic bot. Please report this post if you have any suggestions or concerns :elasticheart: )

---

<div class="post-metadata">

**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:** [February 23, 2023, 9:18pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-7-11-0/326342/3 "2023-02-23T21:18:12Z")

</div>

> [@anandgavai](#):
>
> The log files are below

We need more of the log please.

Also as the bot mentioned, you should upgrade.

---

<div class="post-metadata">

**Author:** ![anandgavai](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/anandgavai/32/117670_2.png) [@anandgavai](https://discuss.elastic.co/u/anandgavai)\
**Post date:** [February 24, 2023, 10:49am UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-7-11-0/326342/4 "2023-02-24T10:49:32Z")

</div>

Hi @warkolm,  
Thanks for responding, here is what I have located in the logs folder elasticsearch.log file ?

```auto
[2023-02-24T11:42:32,899][ERROR][o.e.b.Bootstrap] [Mac-Studio-84] Exception
java.lang.IllegalStateException: jar hell!
class: org.elasticsearch.tools.java_version_checker.JavaVersion
jar1: /Users/anandgavai/Documents/elasticDevelopment/zelasticsearch-7.11.0_bak/lib/java-version-checker-7.11.0.jar
jar2: /Users/anandgavai/Documents/elasticDevelopment/zelasticsearch-7.11.0_bak/lib/java-version-checker-7.11.0 2.jar
        at org.elasticsearch.bootstrap.JarHell.checkClass(JarHell.java:276) ~[elasticsearch-core-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.JarHell.checkJarHell(JarHell.java:184) ~[elasticsearch-core-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.JarHell.checkJarHell(JarHell.java:75) ~[elasticsearch-core-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:201) ~[elasticsearch-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:387) [elasticsearch-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159) [elasticsearch-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150) [elasticsearch-7.11.0.jar:7.11.0]
        at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:75) [elasticsearch-7.11.0.jar:7.11.0]
        at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:116) [elasticsearch-cli-7.11.0%202.jar:7.11.0]
        at org.elasticsearch.cli.Command.main(Command.java:79) [elasticsearch-cli-7.11.0%202.jar:7.11.0]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:115) [elasticsearch-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:81) [elasticsearch-7.11.0.jar:7.11.0]
[2023-02-24T11:42:32,934][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [Mac-Studio-84] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: java.lang.IllegalStateException: jar hell!
class: org.elasticsearch.tools.java_version_checker.JavaVersion
jar1: /Users/anandgavai/Documents/elasticDevelopment/zelasticsearch-7.11.0_bak/lib/java-version-checker-7.11.0.jar
jar2: /Users/anandgavai/Documents/elasticDevelopment/zelasticsearch-7.11.0_bak/lib/java-version-checker-7.11.0 2.jar
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:163) ~[elasticsearch-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150) ~[elasticsearch-7.11.0.jar:7.11.0]
        at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:75) ~[elasticsearch-7.11.0.jar:7.11.0]
        at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:116) ~[elasticsearch-cli-7.11.0%202.jar:7.11.0]
        at org.elasticsearch.cli.Command.main(Command.java:79) ~[elasticsearch-cli-7.11.0%202.jar:7.11.0]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:115) ~[elasticsearch-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:81) ~[elasticsearch-7.11.0.jar:7.11.0]
Caused by: java.lang.IllegalStateException: jar hell!
class: org.elasticsearch.tools.java_version_checker.JavaVersion
jar1: /Users/anandgavai/Documents/elasticDevelopment/zelasticsearch-7.11.0_bak/lib/java-version-checker-7.11.0.jar
jar2: /Users/anandgavai/Documents/elasticDevelopment/zelasticsearch-7.11.0_bak/lib/java-version-checker-7.11.0 2.jar
        at org.elasticsearch.bootstrap.JarHell.checkClass(JarHell.java:276) ~[elasticsearch-core-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.JarHell.checkJarHell(JarHell.java:184) ~[elasticsearch-core-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.JarHell.checkJarHell(JarHell.java:75) ~[elasticsearch-core-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:201) ~[elasticsearch-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:387) ~[elasticsearch-7.11.0.jar:7.11.0]
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159) ~[elasticsearch-7.11.0.jar:7.11.0]
        ... 6 more

```

---

<div class="post-metadata">

**Author:** ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)\
**Post date:** [February 24, 2023, 12:25pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-7-11-0/326342/5 "2023-02-24T12:25:01Z")

</div>

> [@anandgavai](#):
>
> ```auto
> jar1: /Users/anandgavai/Documents/elasticDevelopment/zelasticsearch-7.11.0_bak/lib/java-version-checker-7.11.0.jar
> jar2: /Users/anandgavai/Documents/elasticDevelopment/zelasticsearch-7.11.0_bak/lib/java-version-checker-7.11.0 2.jar
> 
> ```

This indicates that you (or something on your system) has modified the contents of `/lib/`, breaking this installation. It's probably best to do a clean reinstall.

---

<div class="post-metadata">

**Author:** ![anandgavai](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/anandgavai/32/117670_2.png) [@anandgavai](https://discuss.elastic.co/u/anandgavai)\
**Post date:** [February 24, 2023, 2:07pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-7-11-0/326342/6 "2023-02-24T14:07:46Z")

</div>

Thanks @DavidTurner. Actually I did try to setup another installation when I moved to my data and config directory back to the this new installation the new installation is still not able to start elasticsearch ? Any leads would really help in me getting this data back ?

---

<div class="post-metadata">

**Author:** ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)\
**Post date:** [February 24, 2023, 2:27pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-7-11-0/326342/7 "2023-02-24T14:27:10Z")

</div>

If you are getting this error on a fresh installation then there is something very wrong with your system or the installation process you're using.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 24, 2023, 2:27pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch-7-11-0/326342/8 "2023-03-24T14:27:47Z")

</div>

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