[2020-03-11T13:58:13,364][ERROR][o.e.b.Bootstrap          ] [server1] Exception
org.elasticsearch.ElasticsearchException: Failure running machine learning native code. This could be due to running on an unsupported OS or distribution, missing OS libraries, or a problem with the temp directory. To bypass this problem by running Elasticsearch without machine learning functionality set [xpack.ml.enabled: false].
        at org.elasticsearch.xpack.ml.MachineLearning.createComponents(MachineLearning.java:587) ~[?:?]
        at org.elasticsearch.node.Node.lambda$new$9(Node.java:456) ~[elasticsearch-7.6.1.jar:7.6.1]
        at java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:271) ~[?:?]
        at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1621) ~[?:?]
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) ~[?:?]
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[?:?]
        at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) ~[?:?]
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?]
        at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) ~[?:?]
        at org.elasticsearch.node.Node.<init>(Node.java:459) ~[elasticsearch-7.6.1.jar:7.6.1]
        at org.elasticsearch.node.Node.<init>(Node.java:257) ~[elasticsearch-7.6.1.jar:7.6.1]
        at org.elasticsearch.bootstrap.Bootstrap$5.<init>(Bootstrap.java:221) ~[elasticsearch-7.6.1.jar:7.6.1]
        at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:221) ~[elasticsearch-7.6.1.jar:7.6.1]
        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:349) [elasticsearch-7.6.1.jar:7.6.1]
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:170) [elasticsearch-7.6.1.jar:7.6.1]
        at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:161) [elasticsearch-7.6.1.jar:7.6.1]
        at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) [elasticsearch-7.6.1.jar:7.6.1]
        at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:125) [elasticsearch-cli-7.6.1.jar:7.6.1]
        at org.elasticsearch.cli.Command.main(Command.java:90) [elasticsearch-cli-7.6.1.jar:7.6.1]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:126) [elasticsearch-7.6.1.jar:7.6.1]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) [elasticsearch-7.6.1.jar:7.6.1]
[2020-03-11T13:58:13,433][ERROR][o.e.b.ElasticsearchUncaughtExceptionHandler] [server1] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: ElasticsearchException[Failure running machine learning native code. This could be due to running on an unsupported OS or distribution, missing OS libraries, or a problem with the temp directory. To bypass this problem by running Elasticsearch without machine learning functionality set [xpack.ml.enabled: false].]
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:174) ~[elasticsearch-7.6.1.jar:7.6.1]
        at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:161) ~[elasticsearch-7.6.1.jar:7.6.1]
        at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-7.6.1.jar:7.6.1]
        at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:125) ~[elasticsearch-cli-7.6.1.jar:7.6.1]
        at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-7.6.1.jar:7.6.1]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:126) ~[elasticsearch-7.6.1.jar:7.6.1]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) ~[elasticsearch-7.6.1.jar:7.6.1]
Caused by: org.elasticsearch.ElasticsearchException: Failure running machine learning native code. This could be due to running on an unsupported OS or distribution, missing OS libraries, or a problem with the temp directory. To bypass this problem by running Elasticsearch without machine learning functionality set [xpack.ml.enabled: false].