Moving a user from one laptop to another or a company from one server to another is a migration.
Moving from Windows to Linux is a migration. Typically, a migration indicates a change of platform: software or hardware.
Typically, you first back up your data according to instructions from Red Hat. A clean install is ideal if you do not need any of the previous data or applications on your systems or if you are developing a new project that does not rely on prior builds.Ī conversion is when you convert your operating system from a different Linux distribution to Red Hat Enterprise Linux. Clean install: A clean install removes all traces of the previously installed operating system, system data, configurations, and applications and installs the latest version of the operating system.The installed applications and utilities, along with the configurations and preferences, are incorporated into the new version. In-place upgrade: During an in-place upgrade, you replace the earlier version with the new version without removing the earlier version first.Migrating Cyrus SASL databases from the Berkeley DB format to GDBM Updating NSS databases from DBM to SQLiteĨ.7. Upgrading a system hardened to a security baselineĨ.6. Applying security policies"Ĭollapse section "8. Verifying the post-upgrade state of the RHEL 9 systemĮxpand section "8. Performing the upgrade from RHEL 8 to RHEL 9Ħ. Assessing upgradability and applying automated remediations through the web consoleĥ. Assessing upgradability from the command lineĤ.2. Reviewing the pre-upgrade report"Ĭollapse section "4. Preparing a Satellite-registered system for the upgradeĮxpand section "4. Preparing a RHEL 8 system for the upgradeģ.2. Preparing for the upgrade"Ĭollapse section "3. Providing feedback on Red Hat documentationĮxpand section "3.
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