Install xCAT with the following command:
yum clean all (optional) yum install xCAT
Note: During the install, you must accept the xCAT Security Key to continue:
Retrieving key from file:///root/xcat/xcat-dep/rh6/ppc64/repodata/repomd.xml.key Importing GPG key 0xC6565BC9: Userid: "xCAT Security Key <xcat@cn.ibm.com>" From : /root/xcat/xcat-dep/rh6/ppc64/repodata/repomd.xml.key Is this ok [y/N]: