# XPackPlugin Class Not Found
**URL:** https://discuss.elastic.co/t/xpackplugin-class-not-found/84364
**Category:** Elasticsearch
**Created:** [May 3, 2017, 7:42am UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364 "2017-05-03T07:42:49Z")
**Posts on this page:** 13
**Page:** 1
### Author:  [@arun-narayan](https://discuss.elastic.co/u/arun-narayan)
#### Post date: [May 3, 2017, 7:42am UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364/1 "2017-05-03T07:42:49Z")
Team,
We are upgrading to ES 5.3.x and as a result, have included all the necessary dependencies as follows:
```
compile "org.elasticsearch:elasticsearch:5.3.2"
compile "org.elasticsearch.client:x-pack-transport:5.3.2"
compile "org.elasticsearch.client:transport:5.3.2"
compile "org.apache.logging.log4j:log4j-api:2.7"
compile "org.apache.logging.log4j:log4j-core:2.7"
```
We have fixed all the compilation issues. We are using Gradle to build our application. In grade we have this repo entry as well:
maven { url "[https://artifacts.elastic.co/maven](https://artifacts.elastic.co/maven)" }
However, I am trying to start the application it fails with the below exception:
Caused by: java.lang.ClassNotFoundException: org.elasticsearch.xpack.XPackPlugin
at java.net.URLClassLoader.findClass(URLClassLoader.java:381) ~[?:1.8.0\_66]
at java.lang.ClassLoader.loadClass(ClassLoader.java:424) ~[?:1.8.0\_66]
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) ~[?:1.8.0\_66]
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0\_66]
at org.elasticsearch.xpack.client.PreBuiltXPackTransportClient.(PreBuiltXPackTransportClient.java:55) ~[x-pack-transport-5.3.2.jar:5.3.2]
at org.elasticsearch.xpack.client.PreBuiltXPackTransportClient.(PreBuiltXPackTransportClient.java:50) ~[x-pack-transport-5.3.2.jar:5.3.2]
at org.elasticsearch.xpack.client.PreBuiltXPackTransportClient.(PreBuiltXPackTransportClient.java:46) ~[x-pack-transport-5.3.2.jar:5.3.2]
I have read few posts and it seems there is some issue while downloading the transitive dependencies for x-pack.
Please let me know how to go about this now and I am not even able to find the XPackPlugin jar anywhere so that I can manually upload to our local nexus repo and make it work.
Need help asap.
Thanks much guys !
Arun
---
### Author:  [@rjernst](https://discuss.elastic.co/u/rjernst)
#### Post date: [May 3, 2017, 8:39pm UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364/2 "2017-05-03T20:39:24Z")
When you say you use gradle, do you mean Elasticsearch's `build-tools` gradle plugin, or just gradle in general? If using `build-tools`, transitive dependencies are disabled (this is how we prefer to handle all dependencies so that we know exactly which jars we are pulling in). The jar file containing XPackPlugin is `org.elasticsearch.plugin:x-pack-api`, which is a dependency of `x-pack-transport`.
---
### Author:  [@arun-narayan](https://discuss.elastic.co/u/arun-narayan)
#### Post date: [May 4, 2017, 1:20am UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364/3 "2017-05-04T01:20:20Z")
Hi Ryan,
Thanks for your reply. I intended to mean Gradle in general. When we clean build our project using Gradle (./gradlew clean build), it downloads all the transient dependencies of x-pack-transport (5.3.2). However, it does not pull the x-pack-api. I am not sure if I'm missing something here or there is a problem somewhere else.
compile "org.elasticsearch.client:x-pack-transport:5.3.2"
I even tried downloading x-pack-plugin in the following manner:
compile "org.elasticsearch.plugin:x-pack-api:5.3.2"
Even the above command doesn't seem to find any x-pack-api jars.
Please let me know what other ways I can try or where I can download the x-pack-api jar directly.
Appreciate your help in this.
---
### Author:  [@rjernst](https://discuss.elastic.co/u/rjernst)
#### Post date: [May 4, 2017, 2:45am UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364/4 "2017-05-04T02:45:42Z")
I created a very simple build file which compiles fine for me. Can you compare to what you have?
My `build.gradle`:
```auto
apply plugin: 'java'
repositories {
mavenCentral()
maven {
url 'https://artifacts.elastic.co/maven'
}
}
dependencies {
compile 'org.elasticsearch.client:x-pack-transport:5.3.2'
}
```
And my compile output, showing x-pack-api is downloading:
```auto
:compileJava
Download https://artifacts.elastic.co/maven/org/elasticsearch/client/x-pack-transport/5.3.2/x-pack-transport-5.3.2.jar
Download https://artifacts.elastic.co/maven/org/elasticsearch/plugin/x-pack-api/5.3.2/x-pack-api-5.3.2-jar
Download https://repo1.maven.org/maven2/org/elasticsearch/client/transport/5.3.2/transport-5.3.2.jar
Download https://repo1.maven.org/maven2/org/elasticsearch/plugin/transport-netty3-client/5.3.2/transport-netty3-client-5.3.2.jar
Download https://repo1.maven.org/maven2/org/elasticsearch/plugin/transport-netty4-client/5.3.2/transport-netty4-client-5.3.2.jar
Download https://repo1.maven.org/maven2/org/elasticsearch/client/rest/5.3.2/rest-5.3.2.jar
Download https://repo1.maven.org/maven2/org/elasticsearch/client/sniffer/5.3.2/sniffer-5.3.2.jar
Download https://repo1.maven.org/maven2/org/elasticsearch/elasticsearch/5.3.2/elasticsearch-5.3.2.jar
Download https://repo1.maven.org/maven2/org/elasticsearch/plugin/reindex-client/5.3.2/reindex-client-5.3.2.jar
Download https://repo1.maven.org/maven2/org/elasticsearch/plugin/lang-mustache-client/5.3.2/lang-mustache-client-5.3.2.jar
Download https://repo1.maven.org/maven2/org/elasticsearch/plugin/percolator-client/5.3.2/percolator-client-5.3.2.jar
:processResources NO-SOURCE
:classes
:jar
:assemble
BUILD SUCCESSFUL
```
---
### Author:  [@arun-narayan](https://discuss.elastic.co/u/arun-narayan)
#### Post date: [May 4, 2017, 5:35am UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364/5 "2017-05-04T05:35:01Z")
Great! My config also look the same. Let me double check and try to see what's going wrong.
---
### Author:  [@arun-narayan](https://discuss.elastic.co/u/arun-narayan)
#### Post date: [May 4, 2017, 5:54am UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364/6 "2017-05-04T05:54:36Z")
For me it just downloads these:
ownload [http://nexus-us.in.fixstream.com:8081/nexus/content/groups/public/org/elasticsearch/client/x-pack-transport/5.3.2/x-pack-transport-5.3.2.pom](http://nexus-us.in.fixstream.com:8081/nexus/content/groups/public/org/elasticsearch/client/x-pack-transport/5.3.2/x-pack-transport-5.3.2.pom)
Download [http://nexus-us.in.fixstream.com:8081/nexus/content/groups/public/org/elasticsearch/client/x-pack-transport/5.3.2/x-pack-transport-5.3.2.jar](http://nexus-us.in.fixstream.com:8081/nexus/content/groups/public/org/elasticsearch/client/x-pack-transport/5.3.2/x-pack-transport-5.3.2.jar)
POM:
```auto
4.0.0
org.elasticsearch.client
x-pack-transport
5.3.2
POM was created by Sonatype Nexus
```
---
### Author:  [@arun-narayan](https://discuss.elastic.co/u/arun-narayan)
#### Post date: [May 4, 2017, 5:58am UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364/7 "2017-05-04T05:58:37Z")
```auto
4.0.0
org.elasticsearch.client
x-pack-transport
5.3.2
POM was created by Sonatype Nexus
```
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [May 4, 2017, 6:20am UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364/8 "2017-05-04T06:20:43Z")
I think you did not add the following repo to your company nexus:
```auto
elasticsearch-releases
https://artifacts.elastic.co/maven
true
false
```
See [https://www.elastic.co/guide/en/x-pack/current/java-clients.html](https://www.elastic.co/guide/en/x-pack/current/java-clients.html)
---
### Author:  [@arun-narayan](https://discuss.elastic.co/u/arun-narayan)
#### Post date: [May 4, 2017, 8:32am UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364/9 "2017-05-04T08:32:24Z")
I am not sure about the pom.xml of nexus but I tried adding the above repo directly from Nexus UI. Even though it says in service but it is not able to pull any data from the https:// url.
Attached is the snapshot below.
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [May 4, 2017, 1:51pm UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364/10 "2017-05-04T13:51:45Z")
I think you need to clean existing files in your nexus repo under `/nexus/content/groups/public/org/elasticsearch/client/x-pack-transport/5.3.2/`.
Here is how I added it for a test a while ago. It was a proxy.
Note that this elastic repo does not contain any index so you should better set "download remote indexes" to false.
---
### Author:  [@arun-narayan](https://discuss.elastic.co/u/arun-narayan)
#### Post date: [May 5, 2017, 5:25am UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364/11 "2017-05-05T05:25:19Z")
Thanks David !!
Unfortunately, something is messed up at my end. I have tried everything possible now 🙂 So I manually downloaded all the jars somehow and uploaded them to my local nexus. We are good for now !
Appreciate yours and Ryan's quick help on this.
---
### Author:  [@pravin\_prabhat](https://discuss.elastic.co/u/pravin_prabhat)
#### Post date: [May 31, 2017, 4:01pm UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364/12 "2017-05-31T16:01:13Z")
elasticsearch repo doesn't work with nexus2.
It works with nexus3 only.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [June 28, 2017, 4:01pm UTC](https://discuss.elastic.co/t/xpackplugin-class-not-found/84364/13 "2017-06-28T16:01:37Z")
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