In this article we will show how to create search service application in SharePoint. From central administration home page click on manage service applications. Click new icon form ribbon bar and click on “search service application”

From the opened screen  enter the name for search service application , choose search service account “service account that we used for configure all services” , choose or create a new application pool that will used by search admin web service also do the same step for application Pool for Search Query and Site Settings Web Service  then click OK.

Go to SharePoint Central Administration, and then select Application Management.

Then select Manage service applications.

Select search service application and then click manage on the ribbon on the top.

In the left hand bar click content source.

Then click on the down arrow next to the local SharePoint sites and select start full crawl.

Wait until the status becomes Idle.