“No alive nodes found in your cluster” error in magento 2.1.6 after elasticsearch

Question

Every time I save a new product I get that error

"No alive nodes found in your cluster"

My version of magento is 2.1.6 and the problem appeared after installing the elasticsearch module

What could be a solution to this problem? this also does not let me delete products or change their data

Answer 1

There are two things you should check.

1. Check the elastic search hostname and the port are correct and accessible.

   telnet elastic-search-host port

2. Run full reindex, which will create elastic search nodes during indexing.

Answer 2

This error also appears when your elastic search server is not running, you can try if above solution is not working for you.

 sudo -i service elasticsearch start

You can check the status of elasticsearch node status by this command

 curl -XGET 'localhost:9200/_cat/health?v&pretty'