Hi @lwang, The CM version is 6.3.1. This Cloudera Manager server is new (it's being configured and tested). I was able to login through the UI until very recently (since the installation a couple of weeks ago). I always logged with the admin account. Originally the server had neither Kerberos nor Sentry so I believe it was using the "scm" database. Last week I tried to activate kerberos and was able to continue using the Cloudera Manager Web UI. Today I tried to activate the "Sentry" service, for usage with Hive, and was around that time that the login stopped working. I am not sure that's the cause but it's a possibility. Thank you very much for the docs you sent me but I cannot follow them as I don't have access to the Cloudera Manager interface. I read the first doc and a few things sounded promising: "You can configure Cloudera Manager to authenticate users against the Cloudera Manager database or against an external authentication service" - I would like very much to authenticate against the CM database. Is it possible to configure it with the command line? "Users accounts in the Cloudera Manager database page show Cloudera Manager in the User Type column. User accounts in an LDAP directory or other external authentication mechanism show External in the User Type column." - I tried to find the column in the scm database but I couldn't find it. It it only visible on the web page? The third link sounded very promising but I cannot access it. It ask me to sign in but if I try to do it I get the error "The page isn’t redirecting properly". Thank you very much for the help, Gonçalo Redondo
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