Elasticsearch error to start service - linux

Question

I have problems starting elasticsearch, the command to start is:
cd /etc/init.d && ./elasticsearch start
Out put.
/opt/jdk1.8.0_77 uno
JAVA /opt/jdk1.8.0_77/bin/java
Starting elasticsearch: [ OK ]
but executed status I get: "elasticsearch dead but subsys locked"
I tried deleting "elasticsearch", in /var/lock/subsys but, this file is generated again.
In the log says.
java.lang.RuntimeException: Java version: 1.7.0_40 suffers from critical bug https://bugs.openjdk.java.net/browse/JDK-8024830 which can cause data corruption.
Please upgrade the JVM, see http://www.elastic.co/guide/en/elasticsearch/reference/current/_installation.html for current recommendations.
If you absolutely cannot upgrade, please add -XX:-UseSuperWord to the JVM_OPTS environment variable.
Upgrading is preferred, this workaround will result in degraded performance.
But the process is started with java 8,
elasticsearch 26918 0.8 1.0 30526952 724324 ? Sl Jul03 1:29 /opt/jdk1.8.0_77/bin/java -Xms256m -Xmx1g -Djava.awt.headless=true -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+HeapDumpOnOutOfMemoryError -XX:+DisableExplicitGC -Dfile.encoding=UTF-8 -Delasticsearch -Des.foreground=yes -Des.path.home=/opt/elasticsearch -cp :/opt/elasticsearch/lib/elasticsearch-1.7.0.jar:/opt/elasticsearch/lib/*:/opt/elasticsearch/lib/sigar/* org.elasticsearch.bootstrap.Elasticsearch
Any help would be appreciated.

Answer 1

Verify java selection
alternatives --config java
Make sure java 8 is in use. Elasticsearch requires at least Java 8.
Please try setting up the variables in /etc/elasticsearch/elasticsearch.yml:
path.data: path/to/data
path.work: path/to/work
path.logs: /var/log/elasticsearch
path.conf: /etc/elasticsearch
Note: Give access to user "elasticsearch" for folder that
elasticsearch uses:
chown -R elasticsearch /path/to/data
chown -R elasticsearch /path/to/work