CLOSE FOR ME   I have solved this install error. CentOS 6.6 must in english langue, so I changed in all system the LANG="fr_FR.UTF-8" to LANG="en_US.UTF-8" in the file /etc/sysconfig/i18n.   Also, the system need to be clean then : /usr/share/cmf/uninstall-cloudera-manager.sh   And create a file cleanSlave.sh #!/bin/bash rm -vRf /etc/yum.repos.d/cloudera* /etc/cloudera-* rm -vRf /usr/share/cmf /var/lib/cloudera* /var/cache/yum/cloudera* rm -vRf /var/log/cloudera-* yum remove cloudera* yum clean all   You can run it on the master and after if you have a lot of machine do something like that : #!/bin/bash for n in 1 2 3 4 5 do   echo slave$n   ssh root@slave$n 'bash -s' < cleanSlave.sh done ... View more