Whenever cloned or previously registered machine would like to be registered again via uln_register to linux support , "This system profile has already been registered" may occur. These two possibilites of error can be avoided regenerate system uuid .
From ULN web interface related system information can be deleted from System tab. If you could not find any related system on list , following steps can be done.
With "uuidgen -r" command random id is generated ,with "uuidgen -t" generated id is based on system MAC address.For several versions of linux support , following actions can be done.
With "uuidgen -r" command random id is generated ,with "uuidgen -t" generated id is based on system MAC address.For several versions of linux support , following actions can be done.
For Oracle Linux 4 and 5
Output of uuidgen -t is replaced the existing value of rhnuuid parameter of /etc/sysconfig/rhn/up2date-uuid file. up2date is run again.
For Oracle Linux 6
Following command writes generated uuid into the related file which is "/etc/sysconfig/rhn/up2date"
echo "uuid=`uuidgen -t`" >> /etc/sysconfig/rhn/up2date
uln_register is run again.
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