Hi ,  I also had the same issue in RHEL 7 . As suggested I modified the "HOSTNAME" attribute in /etc/sysconfig/network file to FQDN. Following that I also modified the hostname to FQDN using the following command: hostnamectl set-hostname "<your hostname FQDN>" --static  Followed by this  I restarted cloudera-scm-agent . This worked for me , there were no more critical warnings on hostname and canonical hostname . ... View more

Hello,      Based on your advise to set "P2P Parcel Distribution Port" to "0" cloudera manager I am able to resove the Rack Peer update error  . But still installation is failing saying "Failed to receive heartbeat from agent" . Agent is shutting down by itsef. I am not able to find any error in the log too . Anyone facing this issue. Please help me. I am using CM 5.9.1. Thanks in advance!!!!! ... View more