Elasticsearch.yml made an error after adding [bootstrap.mlockall: true]. The version used was 5.6.3

Elastic Stack Elasticsearch
1

Hi
elasticsearch.yml is after adding [bootstrap.mlockall: true],An error occurred while the program was started:
uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: java.lang.IllegalArgumentException: unknown setting [bootstrap.mlockall] please check that any required plugins are installed, or check the breaking changes documentation for removed settings
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:136) ~[elasticsearch-5.6.3.jar:5.6.3]
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:123) ~[elasticsearch-5.6.3.jar:5.6.3]
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:70) ~[elasticsearch-5.6.3.jar:5.6.3]
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:134) ~[elasticsearch-5.6.3.jar:5.6.3]
at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-5.6.3.jar:5.6.3]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:91) ~[elasticsearch-5.6.3.jar:5.6.3]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:84) ~[elasticsearch-5.6.3.jar:5.6.3]
Caused by: java.lang.IllegalArgumentException: unknown setting [bootstrap.mlockall] please check that any required plugins are installed, or check the breaking changes documentation for removed settings

2

You need to read the doc Important Elasticsearch configuration | Elasticsearch Reference [5.6] | Elastic

3

In 5.6.3 it called:

bootstrap.memory_lock: true

4

thank you

5

So that's it,thank you

6

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