Change data path

Service status -

elasticsearch.service - Elasticsearch
   Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Sat 2018-02-03 21:40:11 +06; 1h 6min ago
     Docs: http://www.elastic.co
  Process: 15083 ExecStart=/usr/share/elasticsearch/bin/elasticsearch -p ${PID_DIR}/elasticsearch.pid --quiet -Edefault.path.logs=${LOG_DIR} -Edefault.path.data=${DATA_DIR} -Edefault.path.conf=${CONF_DIR} (code=exited, status=1/FAILURE)
  Process: 15081 ExecStartPre=/usr/share/elasticsearch/bin/elasticsearch-systemd-pre-exec (code=exited, status=0/SUCCESS)
 Main PID: 15083 (code=exited, status=1/FAILURE)
Feb 03 21:40:09 log.nat.kz systemd[1]: Starting Elasticsearch...
Feb 03 21:40:09 log.nat.kz systemd[1]: Started Elasticsearch.
Feb 03 21:40:11 log.nat.kz systemd[1]: elasticsearch.service: main process exited, code=exited, status=1/FAILURE
Feb 03 21:40:11 log.nat.kz systemd[1]: Unit elasticsearch.service entered failed state.
Feb 03 21:40:11 log.nat.kz systemd[1]: elasticsearch.service failed.

I set chmod 777 and chown elasticsearch:elasticsearch to dir.
My elasticsearch.yml file -
GNU nano 2.3.1 File: /etc/elasticsearch/elasticsearch.yml
# ======================== Elasticsearch Configuration =========================
# # NOTE: Elasticsearch comes with reasonable defaults for most settings.
# Before you set out to tweak and tune the configuration, make sure you # understand what are you trying to accomplish and the consequences.
# # The primary way of configuring a node is via this file. This template lists # the most important settings you may want to configure for a production cluster.
# # Please consult the documentation for further information on configuration options:# Elasticsearch Guide | Elastic
# # ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster: # cluster.name: graylog
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node: #
#node.name: node-1 #
# Add custom attributes to the node: # #node.attr.rack: r1
# # ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
path.data: /var/data
# Path to log files: #
#path.logs: /path/to/logs #
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
#bootstrap.memory_lock: true
#
# Make sure that the heap size is set to about half the memory available
# on the system and that the owner of the process is allowed to use this
# limit.
#
# Elasticsearch performs poorly when the system is swapping the memory.
#
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
#network.host: 192.168.0.1
#
# Set a custom port for HTTP:
#
#http.port: 9200
#
# For more information, consult the network module documentation.
#
# --------------------------------- Discovery ----------------------------------