Ubuntu uninstall elasticsearch

elasticsearch

I installed elasticsearch.90.7 with a deb file in ubuntu.
I tried to uninstall elasticsearch.90.7 with this command:

sudo apt-get --purge autoremove elasticsearch

And then I downloaded elasticsearch-1.6.0.deb to install elasticsearch 1.6.

When I run this command to install elasticsearch 1.6 by deb file:

dpkg -i elasticsearch-1.6.0.deb

It shows me this:

Selecting previously unselected package elasticsearch.
(Reading database ... 89826 files and directories currently installed.)
Preparing to unpack elasticsearch-1.6.0.deb ...
Creating elasticsearch group... OK
Creating elasticsearch user... OK
Unpacking elasticsearch (1.6.0) ...
Setting up elasticsearch (1.6.0) ...
Processing triggers for ureadahead (0.100.0-16) ...

When I start elasticsearch with service elasticsearch start it's starting, but when i run this command: curl http://localhost:9200

It shows this error: 

curl: (7) Failed to connect to localhost port 9200: Connection refused

I think elasticsearch is not installed properly. I want know what I should do to install elasticsearch properly.

Best Answer

(1) Remove previous versions of ElasticSearch:

sudo apt-get --purge autoremove elasticsearch

(2) Remove the ElasticSearch directories:

sudo rm -rf /var/lib/elasticsearch/
sudo rm -rf /etc/elasticsearch

(3) Install ElasticSearch 1.6:

sudo dpkg -i elasticsearch-1.6.0.deb

(4) Start the service:

sudo service elasticsearch start

(5) Test if it works:

sudo service elasticsearch status
curl -XGET "http://localhost:9200/_cluster/health?pretty=true"
curl "localhost:9200/_nodes/settings?pretty=true"
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