# Installed 6.6 -- Could not find java; set JAVA\_HOME or ensure java is in PATH **URL:** \ **Category:** Elasticsearch\ **Created:** [March 12, 2019, 7:43pm UTC](https://discuss.elastic.co/t/installed-6-6-could-not-find-java-set-java-home-or-ensure-java-is-in-path/172026 "2019-03-12T19:43:03Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![kb2295](https://avatars.discourse-cdn.com/v4/letter/k/4491bb/32.png) [@kb2295](https://discuss.elastic.co/u/kb2295)\ **Post date:** [March 12, 2019, 7:43pm UTC](https://discuss.elastic.co/t/installed-6-6-could-not-find-java-set-java-home-or-ensure-java-is-in-path/172026/1 "2019-03-12T19:43:03Z")
Hi, I just installed Elastic Search 6.6. I ran it and it worked fine until I tried again a few hours later: ``` # /export1/opt/ELK_Bin/elasticsearch-6.6.1/bin/elasticsearch which: no java in (/usr/lib64/qt-3.3/bin:/usr/local/sbin:/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/X11R6/bin) could not find java; set JAVA_HOME or ensure java is in PATH [Dev root @ vm-63f1-8c50 /export1/opt/ELK_Bin] # echo $JAVA_HOME /export/opt/jdk/1.8.0_25l64/ ``` The logs I got usually showed up on the console and now I can't even see what the larger issue is. Java is installed and this has started up before. I'm not sure what went wrong... ---
**Author:** ![TimV](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/timv/32/13162_2.png) [@TimV](https://discuss.elastic.co/u/TimV)\ **Post date:** [March 13, 2019, 1:56am UTC](https://discuss.elastic.co/t/installed-6-6-could-not-find-java-set-java-home-or-ensure-java-is-in-path/172026/2 "2019-03-13T01:56:47Z")
> [@kb2295](#): > > ```auto > which: no java in (/usr/lib64/qt-3.3/bin:/usr/local/sbin:/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/X11R6/bin) > could not find java; set JAVA_HOME or ensure java is in PATH > > ``` That error is usually pretty conclusive, so it looks like something changed that means we can't find your `java` binary. A few options to try: 1. Has the `JAVA_HOME` variable been exported to child processes? Try the command below. If it doesn't find JAVA\_HOME then you have a problem with your shell environment 2. Does the JAVA\_HOME variable point to a valid directory with a valid binary? ---
**Author:** ![jiantao\_wu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jiantao_wu/32/42309_2.png) [@jiantao\_wu](https://discuss.elastic.co/u/jiantao_wu)\ **Post date:** [March 19, 2019, 9:39am UTC](https://discuss.elastic.co/t/installed-6-6-could-not-find-java-set-java-home-or-ensure-java-is-in-path/172026/3 "2019-03-19T09:39:30Z")
My env is ubuntu. I have same problem.The first command`fgrep JAVA` is not result.But the second command can find the java dir. But, I still have the err `Could not find java; set JAVA_HOME or ensure java is in PATH` ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [March 19, 2019, 10:02am UTC](https://discuss.elastic.co/t/installed-6-6-could-not-find-java-set-java-home-or-ensure-java-is-in-path/172026/4 "2019-03-19T10:02:01Z")
You also asked at [Could not find java; set JAVA\_HOME or ensure java is in PATH in ubuntu](https://discuss.elastic.co/t/could-not-find-java-set-java-home-or-ensure-java-is-in-path-in-ubuntu/172931) which is I think the right place for your question. Let's keep the discussion there. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [April 16, 2019, 10:02am UTC](https://discuss.elastic.co/t/installed-6-6-could-not-find-java-set-java-home-or-ensure-java-is-in-path/172026/5 "2019-04-16T10:02:06Z")
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