The software described in this documentation is either no longer supported or is in extended support.
Oracle recommends that you upgrade to a current supported release.
After a Spacewalk server is upgraded, Spacewalk clients might
have to re-register with the Spacewalk server. The web
interface shows the clients as registered, but when you run
the rhncfg-client command on the client,
errors such as Authentication failed: Invalid digital
server certificate are displayed.
If this happens, use either the rhn_register or the rhnreg_ks --force command to re-register the client.