Chapter 16. General Updates

A new module helping to upgrade the Tomcat server from Red Hat Enterprise Linux 6 to Red Hat Enterprise Linux 7
This update adds a new module to the preupgrade-assistant-el6toel7 package as a Technology Preview. The module helps to upgrade from Tomcat version 6.0.24 in Red Hat Enterprise Linux 6 to Tomcat version 7.0.x in Red Hat Enterprise Linux 7 and provides information about incompatibilities found in the system configuration. When using the module, which is recommended only on non-production machines, several automatic changes are made to the Tomcat configuration files during the postupgrade phase to prevent certain known issues. Note that in the supported scenario, users should remove the tomcat6 packages before upgrading.
A new module helping to upgrade Java OpenJDK 7 and Java OpenJDK 8 from Red Hat Enterprise Linux 6 to Red Hat Enterprise Linux 7
The preupgrade-assistant-el6toel7 package provides a new module that handles upgrades of Java OpenJDK 7 and Java OpenJDK 8 from Red Hat Enterprise Linux 6 to Red Hat Enterprise Linux 7. The module, available as a Technology Preview, informs users about possible requested actions and installs the expected equivalents of the original Java OpenJDK packages on the target system. Note that Java OpenJDK 6 and earlier versions are not handled by the in-place upgrade, but the module informs users about expected risks and required manual actions.