I am trying to install by this same process http://www.cloudera.com/documentation/manager/5-1-x/Cloudera-Manager-Installation-Guide/cm5ig_install_on_ec2.html but getting this error /var/log/cloudera-manager-installer/3.install-oracle-j2sdk1.7.log ---------------------------------- Reading package lists... Building dependency tree... Reading state information... The following NEW packages will be installed: oracle-j2sdk1.7 0 upgraded, 1 newly installed, 0 to remove and 188 not upgraded. Need to get 142 MB of archives. After this operation, 292 MB of additional disk space will be used. WARNING: The following packages cannot be authenticated! oracle-j2sdk1.7 E: There are problems and -y was used without --force-yes Server Information: Distributor ID: Ubuntu Description: Ubuntu 14.04.5 LTS Release: 14.04 Codename: trusty
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