Hello,     I apologize for the delay.  I think there may be a couple of things going on.  For starters, you should add your own hostname and IP address to the /etc/hosts file on each machine.  In other words, both Host1 and Host2 entries should be in the /etc/hosts file on both machines.  Also, have you checked to see if iptables is running?  That is a firewall app that can stop traffic between nodes.  To identify if iptables is running and disable it, do this (as root):   $ sudo chkconfig iptables --list iptables 0:off 1:off 2:off 3:off 4:off 5:off 6:off     If you see iptables as "on" for any of those values (especially #5), than it's probably getting in your way, you should disable it unless you've got a company policy requiring it be enabled.  To disable it, run this command:   sudo chkconfig iptables off   ... View more

It appears that your "Service Monitor" service is unable to connect to it's underlying database.   During the installation process of CM, there was a screen that would have asked you to configure your database connections for the various databases used by the "mgmt1" services of Cloudera Manager.  Did you modify any of the default settings on that screen and/or click the "Test Connection" button there?  CM will default to a postgresql database for these dbs unless you change it to point to MySQL or a db of your choice. ... View more