Define hostname on every node

Add "HOSTNAME=cloud60" into file /etc/sysconfig/network on host 10.12.2.60. Then reboot system. Do this with it's own hostname on every node.

Add host name to every node

Add /etc/hosts to every node:

10.12.2.60 cloud60
10.12.2.61 cloud61
10.12.2.62 cloud62
10.12.2.63 cloud63
10.12.2.90 cloud90
10.12.2.91 cloud91
10.12.2.92 cloud92
10.12.2.93 cloud93

where 10.12.2.60 is the manager node (where the cloudera manager is installed).

Local Repository

Copy DVD iso file to manager node, mount it. Create a link of /mnt/cdrom to /var/www/html with httpd:

# mkdir /mnt/cdrom
# mount -o loop /path/to/CentOS6.3-DVD.iso /mnt/cdrom
# cd /var/www/html
# ln -s /mnt/cdrom cdrom

Then add file cdrom.repo under /etc/yum.repos.d/:

[cdrom]
name = CDROM
baseurl = http://10.12.2.60/cdrom/
gpgcheck = 0

Other notes

• Add user "boco" to "sudoers" on all nodes: add "boco ALL=(ALL) NOPASSWD: ALL" to /etc/sudoers;

• The manager node can ssh to any other node with no password (ssh-copy-id ...);

• SSH from normal node to manager node to remove "are you sure you want to continue connecting (yes/no)?" prompt;

• Shutdown iptables on all nodes: service iptables stop and chkconfig iptables off;