Notes on Installing Cloudera Manager on CentOS 6.5

I did a minimal install, so here were the necessary things:

1. Disable SELINUX

– nano /etc/selinux/config

– set it to “disabled”

2. install python

– yum install python

3. install wget (to get cloudera-manager installer)

– yum install wget

4. install nano (because I like it)

– yum install nano

5. allow root to log in remotely (Cloudera Manager requires this)

6. disable iptables

– only because I’m running all machines within a locked-down subnet

– yeah, scary with allowing root to log in remotely

Likely convenient things:

1. set a common hosts file for all machines:

– list out all the IPs and hostnames for each machine in this file

– this is where you can specify the fully qualified domain name as well as host names

– Cloudera Manager will work more seemlessly in various ways

– You can have Cloudera Manager search for nodes to add by these host names

2. set up SSH keys so Cloudera Manager can use those instead of SSH passwords (

– though it can use SSH passwords as well

Note that when Cloudera Manager sets up a host, it will download 500+ MBs of install packages on each machine. In my case, the YUM install logs showed this:

Transaction Summary

================================================================================

Install 117 Package(s)

Total download size: 513 M

Installed size: 894 M

Downloading Packages: