Public key *. rpm is not installed solution> [root @ RedHat mnt] # cd/opt/cdrom/Packages/[root @ RedHat Packages] # yum install google-chrome-stable_current_i386.rpm Loaded plugins: refresh-packagekit, rhnplugin This system is not registered with RHN. RHN support will be disabled. base | 1.3 kB... base/primary | 1.3 MB... base 2680/2680 Setting up Install Process Examining google-chrome-stabl E_current_i386.rpm: google-chrome-stable-10.0.648.134-77917.i386 Marking google-chrome-stable_current_i386.rpm to be installed Resolving Dependencies --> Running transaction check ---> Package google-chrome-stable.i386 0: 10. 0.648.134-77917 set to be updated --> Finished Dependency Resolution Dependencies Resolved ================ ========================================================== ================ Pack Age Arch Version Repository Size ==================================== ========================================================== ===== Installing: google-chrome-stable i386 10.0.648.134-77917/google-chrome-stable_current_i386 83 M Transaction Summary ================== ========================================================== ================== Install 1 Package (s) upgrade 0 Package (s) Total size: 83 M Installed size: 83 M Is this OK [y/N]: y Downloading Packages: warning: rpmts_HdrFromFdno: Header V4 DSA/SHA1 Signature, key ID 7fac5991: NOKEY Public key for google-chrome-stable_current_i386.rpm is not installed two methods can solve: 1. run [root @ RedHat Packages] # rpm -- import/etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release. 2. run [root @ RedHat Packages] # yum. in the conf file, change gpgcheck = 1 to gpgcheck = 0. Note: method 2 works well 3. The best solution: add the "-- nogpgcheck" parameter [root @ RedHat Packages] # yum install google-chrome-stable_current_i386.rpm -- nogpgcheck