# Upgrading from 5.6.8 to 6.8
**URL:** https://discuss.elastic.co/t/upgrading-from-5-6-8-to-6-8/209177
**Category:** Elasticsearch
**Created:** [November 24, 2019, 12:14pm UTC](https://discuss.elastic.co/t/upgrading-from-5-6-8-to-6-8/209177 "2019-11-24T12:14:07Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Callonski](https://discuss.elastic.co/u/Callonski)
#### Post date: [November 24, 2019, 12:14pm UTC](https://discuss.elastic.co/t/upgrading-from-5-6-8-to-6-8/209177/1 "2019-11-24T12:14:07Z")
Hi, I'm having some trouble upgrading elasticsearch.
Following : [https://www.elastic.co/guide/en/elasticsearch/reference/6.8/rolling-upgrades.html](https://www.elastic.co/guide/en/elasticsearch/reference/6.8/rolling-upgrades.html)
And: [https://www.elastic.co/guide/en/elasticsearch/reference/6.8/deb.html](https://www.elastic.co/guide/en/elasticsearch/reference/6.8/deb.html)
But I get :
warning: Falling back to java on path. This behavior is deprecated. Specify JAVA\_HOME
ERROR: keystore does not exist at [/etc/default/elasticsearch.keystore]
dpkg: error processing package elasticsearch (--configure):
subprocess installed post-installation script returned error exit status 78
Errors were encountered while processing:
elasticsearch
E: Sub-process /usr/bin/dpkg returned an error code (1)
I've tried setting JAVA\_HOME in: etc/default/elasticsearch as:
JAVA\_HOME=/usr/lib/jvm/java-1.8.0-openjdk-amd64
But not quite sure how to get it right... Anyone got a clue?
Thanks!
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 22, 2019, 12:14pm UTC](https://discuss.elastic.co/t/upgrading-from-5-6-8-to-6-8/209177/2 "2019-12-22T12:14:07Z")
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