Prevent Elasticsearch 6.5 from loading xpack?

Elastic Stack Elasticsearch
1

Hi,
I am upgrading from ES 5.5 to ES 6.5 and I see now that xpack is being bundled with ES 6.5 (since ES 6.3). Is there anyway to prevent Elasticsearch from trying to load the xpack plugin? Something I can put in my elasticsearch.yml file?

We didn't use xpack before and this is causing the installation of our product to fail because we rely on Elasticsearch to start.

Here is the exception:

[2019-03-07T23:15:10,594][ERROR][o.e.b.Bootstrap          ] [aH8C7o_] Exception
java.lang.IllegalStateException: failed to load plugin class [org.elasticsearch.xpack.core.XPackPlugin]
	at org.elasticsearch.plugins.PluginsService.loadPlugin(PluginsService.java:607) ~[elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.plugins.PluginsService.loadBundle(PluginsService.java:549) ~[elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.plugins.PluginsService.loadBundles(PluginsService.java:464) ~[elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.plugins.PluginsService.<init>(PluginsService.java:156) ~[elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.node.Node.<init>(Node.java:338) ~[elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.node.Node.<init>(Node.java:265) ~[elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.bootstrap.Bootstrap$5.<init>(Bootstrap.java:212) ~[elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:212) ~[elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:333) [elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:136) [elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:127) [elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) [elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) [elasticsearch-cli-6.5.4.jar:6.5.4]
	at org.elasticsearch.cli.Command.main(Command.java:90) [elasticsearch-cli-6.5.4.jar:6.5.4]
	at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:93) [elasticsearch-6.5.4.jar:6.5.4]
	at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:86) [elasticsearch-6.5.4.jar:6.5.4]
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:?]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?]
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_171]
	at org.elasticsearch.plugins.PluginsService.loadPlugin(PluginsService.java:598) ~[elasticsearch-6.5.4.jar:6.5.4]
	... 15 more
Caused by: org.elasticsearch.ElasticsearchException: failed to initialize a TrustManagerFactory
	at org.elasticsearch.xpack.core.ssl.DefaultJDKTrustConfig.createTrustManager(DefaultJDKTrustConfig.java:49) ~[?:?]
	at org.elasticsearch.xpack.core.ssl.SSLService.createSslContext(SSLService.java:356) ~[?:?]
	at org.elasticsearch.xpack.core.ssl.SSLService.loadSSLConfigurations(SSLService.java:389) ~[?:?]
	at org.elasticsearch.xpack.core.ssl.SSLService.<init>(SSLService.java:93) ~[?:?]
	at org.elasticsearch.xpack.core.XPackPlugin.<init>(XPackPlugin.java:140) ~[?:?]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:?]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?]
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_171]
	at org.elasticsearch.plugins.PluginsService.loadPlugin(PluginsService.java:598) ~[elasticsearch-6.5.4.jar:6.5.4]
	... 15 more
Caused by: java.security.KeyStoreException: problem accessing trust storejava.io.IOException: Invalid keystore format
	at sun.security.ssl.TrustManagerFactoryImpl.engineInit(TrustManagerFactoryImpl.java:74) ~[?:?]
	at javax.net.ssl.TrustManagerFactory.init(TrustManagerFactory.java:250) ~[?:1.8.0_171]
	at org.elasticsearch.xpack.core.ssl.CertParsingUtils.trustManager(CertParsingUtils.java:276) ~[?:?]
	at org.elasticsearch.xpack.core.ssl.DefaultJDKTrustConfig.createTrustManager(DefaultJDKTrustConfig.java:47) ~[?:?]
	at org.elasticsearch.xpack.core.ssl.SSLService.createSslContext(SSLService.java:356) ~[?:?]
	at org.elasticsearch.xpack.core.ssl.SSLService.loadSSLConfigurations(SSLService.java:389) ~[?:?]
	at org.elasticsearch.xpack.core.ssl.SSLService.<init>(SSLService.java:93) ~[?:?]
	at org.elasticsearch.xpack.core.XPackPlugin.<init>(XPackPlugin.java:140) ~[?:?]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[?:?]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[?:?]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[?:?]
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[?:1.8.0_171]
	at org.elasticsearch.plugins.PluginsService.loadPlugin(PluginsService.java:598) ~[elasticsearch-6.5.4.jar:6.5.4]
	... 15 more
2

There is a separate oss distribution available that does not include x-pack, which might be what you are looking for.

3

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