Zend certified PHP/Magento developer

Catalog Search index process error during indexation process: Could not ping search engine: No alive nodes found in your cluster

I installed Magento 2.4.6-p3 by 1-click installation under Hostmonster webhosting c-panel. I didn’t touch any thing. It went through well and gave me Admin Access of Magento 2.4.6-p3.

I searched whole last week to fix ‘product not showing issue’, and read about reindex via SSH. So, I ran it found the following error while reindex. I ran it under my webhosting Hostmonster SSH.

enter image description here

catalog search index process error during indexation process:
could not ping search engine: No alive nodes found in your cluster

Could you help me how to fix this issue under my webhosting at Hostmonster environment? Should I put some kinds of SSH command to fix? Or, change some value under Magento Back End Admin?

‘No alive nodes found in your cluster’ kept showing while I click ‘Test Connection’ under Admin – Configuration – Catalog. Could you help me how to fix this issue and use Magento 2.4.6-p3 properly under Hostmonster webhosting environment?

enter image description here

How can I check if the opensearch is working? As I see Store – Configuration – Catalog, the opensearch was set as default. As I test connection, No alive nodes found in your cluster just as I posted the error image. After 1-click installation under c-panel on Hostmonster, I haven’t touch any thing. Every thing should be set as default mode.

Is there any way to start the opensearch if it was turn off as a default mode? How can I turn it on?

Many many thanks.
Best,
CMYK337