Elastic Search on Kubernetes - AccessDeniedException

[saturnism]

Overview of the issue

If ES deployment starts (increasing resource restriction), then it crashes with exception:

Caused by: java.nio.file.AccessDeniedException: /usr/share/elasticsearch/data/nodes
	at sun.nio.fs.UnixException.translateToIOException(UnixException.java:90) ~[?:?]
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111) ~[?:?]
	at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116) ~[?:?]
	at sun.nio.fs.UnixFileSystemProvider.createDirectory(UnixFileSystemProvider.java:389) ~[?:?]
	at java.nio.file.Files.createDirectory(Files.java:693) ~[?:?]
	at java.nio.file.Files.createAndCheckIsDirectory(Files.java:800) ~[?:?]
	at java.nio.file.Files.createDirectories(Files.java:786) ~[?:?]
	at org.elasticsearch.env.NodeEnvironment.lambda$new$0(NodeEnvironment.java:273) ~[elasticsearch-6.8.6.jar:6.8.6]
	at org.elasticsearch.env.NodeEnvironment$NodeLock.<init>(NodeEnvironment.java:206) ~[elasticsearch-6.8.6.jar:6.8.6]
	at org.elasticsearch.env.NodeEnvironment.<init>(NodeEnvironment.java:270) ~[elasticsearch-6.8.6.jar:6.8.6]
	at org.elasticsearch.node.Node.<init>(Node.java:296) ~[elasticsearch-6.8.6.jar:6.8.6]
	at org.elasticsearch.node.Node.<init>(Node.java:266) ~[elasticsearch-6.8.6.jar:6.8.6]
	at org.elasticsearch.bootstrap.Bootstrap$5.<init>(Bootstrap.java:212) ~[elasticsearch-6.8.6.jar:6.8.6]
	at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:212) ~[elasticsearch-6.8.6.jar:6.8.6]
	at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:333) ~[elasticsearch-6.8.6.jar:6.8.6]
	at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159) ~[elasticsearch-6.8.6.jar:6.8.6]
	... 6 more

Motivation for or Use Case

ES should work on Kubernetes.

Reproduce the error

https://github.com/jhipster/jdl-samples/blob/master/microservices-blog-store.jh

Related issues

#11301

Suggest a Fix

TBD

JHipster Version(s)

6.7.0

JHipster configuration

https://github.com/jhipster/jdl-samples/blob/master/microservices-blog-store.jh

Entity configuration(s) entityName.json files generated in the .jhipster directory

https://github.com/jhipster/jdl-samples/blob/master/microservices-blog-store.jh

Browsers and Operating System

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[saturnism]

elastic/helm-charts#137

[pascalgrimaud]

fixed by #11303