I am seeing the same issue when trying to get into all my management consoles. We are running our splunk instances on Red Hat. Here is an example, I went into access control, I click on Authentication Method and it sends me to the settings page. When I click on "configure Splunk to use LDAP and Map Groups" I get the same error.
This was a fresh install on new servers started with Splunk 6.0, everything worked fine. we upgraded to Splunk 6.01 - everything worked fine again. Recently I upgraded our Splunk instances to Splunk 6.0.2 and that is when we started having the issues.
Yes other management pages do the same thing. I can't get into several different ones. This is happening only on my two search heads - we are running search head pooling on NFS. Oddly enough same process on my cluster master and 3 index peers - all work fine.
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