I am deploy elasticsearch in kubernetes(v1.15.2,I am deploy k8s the hard way) follow this doc, now start pods failed and throw this error:

Back-off restarting failed container

I am found the init container start failed in kubernetes dashboard:

and using this command to check initial container's log:

kubectl logs quickstart-es-default-0 -c elastic-internal-init-filesystem

this is the log output:

$ kubectl logs quickstart-es-default-0 -c elastic-internal-init-filesystem
Starting init script
Linking /mnt/elastic-internal/xpack-file-realm/users to /usr/share/elasticsearch/config/users
Linking /mnt/elastic-internal/xpack-file-realm/roles.yml to /usr/share/elasticsearch/config/roles.yml
Linking /mnt/elastic-internal/xpack-file-realm/users_roles to /usr/share/elasticsearch/config/users_roles
Linking /mnt/elastic-internal/elasticsearch-config/elasticsearch.yml to /usr/share/elasticsearch/config/elasticsearch.yml
Linking /mnt/elastic-internal/unicast-hosts/unicast_hosts.txt to /usr/share/elasticsearch/config/unicast_hosts.txt
File linking duration: 0 sec.
Copying /usr/share/elasticsearch/config/* to /mnt/elastic-internal/elasticsearch-config-local/
removed '/mnt/elastic-internal/elasticsearch-config-local/elasticsearch.yml'
'/usr/share/elasticsearch/config/elasticsearch.yml' -> '/mnt/elastic-internal/elasticsearch-config-local/elasticsearch.yml'
removed '/mnt/elastic-internal/elasticsearch-config-local/http-certs/..data'
'/usr/share/elasticsearch/config/http-certs/..data' -> '/mnt/elastic-internal/elasticsearch-config-local/http-certs/..data'
removed '/mnt/elastic-internal/elasticsearch-config-local/http-certs/tls.key'
'/usr/share/elasticsearch/config/http-certs/tls.key' -> '/mnt/elastic-internal/elasticsearch-config-local/http-certs/tls.key'
removed '/mnt/elastic-internal/elasticsearch-config-local/http-certs/tls.crt'
'/usr/share/elasticsearch/config/http-certs/tls.crt' -> '/mnt/elastic-internal/elasticsearch-config-local/http-certs/tls.crt'
removed '/mnt/elastic-internal/elasticsearch-config-local/http-certs/ca.crt'
'/usr/share/elasticsearch/config/http-certs/ca.crt' -> '/mnt/elastic-internal/elasticsearch-config-local/http-certs/ca.crt'
'/usr/share/elasticsearch/config/http-certs/..2020_02_27_06_24_32.078728097/tls.key' -> '/mnt/elastic-internal/elasticsearch-config-local/http-certs/..2020_02_27_06_24_32.078728097/tls.key'
'/usr/share/elasticsearch/config/http-certs/..2020_02_27_06_24_32.078728097/tls.crt' -> '/mnt/elastic-internal/elasticsearch-config-local/http-certs/..2020_02_27_06_24_32.078728097/tls.crt'
'/usr/share/elasticsearch/config/http-certs/..2020_02_27_06_24_32.078728097/ca.crt' -> '/mnt/elastic-internal/elasticsearch-config-local/http-certs/..2020_02_27_06_24_32.078728097/ca.crt'
'/usr/share/elasticsearch/config/jvm.options' -> '/mnt/elastic-internal/elasticsearch-config-local/jvm.options'
'/usr/share/elasticsearch/config/log4j2.properties' -> '/mnt/elastic-internal/elasticsearch-config-local/log4j2.properties'
'/usr/share/elasticsearch/config/role_mapping.yml' -> '/mnt/elastic-internal/elasticsearch-config-local/role_mapping.yml'
removed '/mnt/elastic-internal/elasticsearch-config-local/roles.yml'
'/usr/share/elasticsearch/config/roles.yml' -> '/mnt/elastic-internal/elasticsearch-config-local/roles.yml'
removed '/mnt/elastic-internal/elasticsearch-config-local/unicast_hosts.txt'
'/usr/share/elasticsearch/config/unicast_hosts.txt' -> '/mnt/elastic-internal/elasticsearch-config-local/unicast_hosts.txt'
removed '/mnt/elastic-internal/elasticsearch-config-local/users'
'/usr/share/elasticsearch/config/users' -> '/mnt/elastic-internal/elasticsearch-config-local/users'
removed '/mnt/elastic-internal/elasticsearch-config-local/users_roles'
'/usr/share/elasticsearch/config/users_roles' -> '/mnt/elastic-internal/elasticsearch-config-local/users_roles'
Empty dir /usr/share/elasticsearch/plugins
Copying /usr/share/elasticsearch/bin/* to /mnt/elastic-internal/elasticsearch-bin-local/
'/usr/share/elasticsearch/bin/elasticsearch' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch'
'/usr/share/elasticsearch/bin/elasticsearch-certgen' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-certgen'
'/usr/share/elasticsearch/bin/elasticsearch-certutil' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-certutil'
'/usr/share/elasticsearch/bin/elasticsearch-cli' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-cli'
'/usr/share/elasticsearch/bin/elasticsearch-croneval' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-croneval'
'/usr/share/elasticsearch/bin/elasticsearch-env' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-env'
'/usr/share/elasticsearch/bin/elasticsearch-env-from-file' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-env-from-file'
'/usr/share/elasticsearch/bin/elasticsearch-keystore' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-keystore'
'/usr/share/elasticsearch/bin/elasticsearch-migrate' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-migrate'
'/usr/share/elasticsearch/bin/elasticsearch-node' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-node'
'/usr/share/elasticsearch/bin/elasticsearch-plugin' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-plugin'
'/usr/share/elasticsearch/bin/elasticsearch-saml-metadata' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-saml-metadata'
'/usr/share/elasticsearch/bin/elasticsearch-setup-passwords' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-setup-passwords'
'/usr/share/elasticsearch/bin/elasticsearch-shard' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-shard'
'/usr/share/elasticsearch/bin/elasticsearch-sql-cli' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-sql-cli'
'/usr/share/elasticsearch/bin/elasticsearch-sql-cli-7.6.0.jar' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-sql-cli-7.6.0.jar'
'/usr/share/elasticsearch/bin/elasticsearch-syskeygen' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-syskeygen'
'/usr/share/elasticsearch/bin/elasticsearch-users' -> '/mnt/elastic-internal/elasticsearch-bin-local/elasticsearch-users'
'/usr/share/elasticsearch/bin/x-pack-env' -> '/mnt/elastic-internal/elasticsearch-bin-local/x-pack-env'
'/usr/share/elasticsearch/bin/x-pack-security-env' -> '/mnt/elastic-internal/elasticsearch-bin-local/x-pack-security-env'
'/usr/share/elasticsearch/bin/x-pack-watcher-env' -> '/mnt/elastic-internal/elasticsearch-bin-local/x-pack-watcher-env'
Files copy duration: 1 sec.
chowning /usr/share/elasticsearch/data to elasticsearch:elasticsearch
chown: changing ownership of '/usr/share/elasticsearch/data': Operation not permitted
failed to change ownership of '/usr/share/elasticsearch/data' from root:root to elasticsearch:elasticsearch

I am already searching from internet and found this question. And not solve my problem.Now I am using a NFS folder as PV loaded by ElasticSearch,is the folder is root user affect the ES?This is my PV folder:

[root@ops001 es]# pwd
/opt/data/data/es
[root@ops001 es]# ll
total 8
drwxrwxrwx 2 root root 4096 Feb 27 10:57 pv1
drwxrwxrwx 2 root root 4096 Feb 27 13:59 pv2(Elastic using now)

how to fix this problem?