I recently upgraded Splunk from 6.0 to 6.3.2. Everything seems right, but the 'Data inputs' page has the same issue as the old version with a green 'Add Data' button linking to nowhere.
Its url: 'http:///en-US/manager/search/datainputstats', from menu: 'Settings', 'Data inputs'.
I realized only one of my Splunk servers gets into this situation and it is my main Search Head.
Now I upgraded it to Splunk 6.3.3 (untar the .tgz file and cover to old folder) trying to solve this problem, but failed.
Is there anyone can help to upgrade Splunk partly?
I think you may need to upgrade dbconnect to the latest version where the issue has been addressed. Older versions of dbconnect break the data inputs page on newer versions of Splunk.
Here's the bug on the dbconnect release notes:
pre-1.2.0 DBX-873, DBX-882, DBX-277, SPL-91835 When upgrading to or installing Splunk Enterprise 6.2.0, Splunk DB Connect version 1.1.4 or earlier prevented the Data Inputs page from showing the Forwarded Inputs section.