![]() ![]() A USB key or USB hard drive is recommended when using the Installation ISO image to create bootable installation media. The Installation ISO image is in multiple GB size, and as a result, it might not fit on optical media formats. For instructions on how to install the Red Hat Insights client and register your system to the service, see the Red Hat Insights Get Started page. The Red Hat Insights service, which enables you to proactively identify, examine, and resolve known technical issues, is available with all RHEL subscriptions. ![]() Instructions on how to perform an in-place upgrade from RHEL 8 to RHEL 9 are provided by the document Upgrading from RHEL 8 to RHEL 9. Major differences between RHEL 8 and RHEL 9, including removed functionality, are documented in Considerations in adopting RHEL 9. The Package manifest document provides a package listing for RHEL 9, including licenses and application compatibility levels.Īpplication compatibility levels are explained in the Red Hat Enterprise Linux 9: Application Compatibility Guide document. Information regarding the Red Hat Enterprise Linux life cycle is provided in the Red Hat Enterprise Linux Life Cycle document. The selinux role now includes setting of seuser and selevel parameters.Ĭapabilities and limits of Red Hat Enterprise Linux 9 as compared to other versions of the system are available in the Knowledgebase article Red Hat Enterprise Linux technology capabilities and limits. The firewall role has a new option for overwriting previous configuration. The role can also provide Ansible facts, and add or remove an interface to the zone using PCI device ID. In the firewall role, you can now add, update, or remove services using absent and present states. ![]() ![]() The firewall role does not require the state parameter when configuring masquerade or icmp_block_inversion. The postfix role now has a new option for overwriting previous configuration. The metrics role can now export postfix performance data. The sshd role verifies the include directive for the drop-in directory, and the role can now be managed through /etc/ssh/sshd_config. The storage role now includes support for thinly provisioned volumes, and the role now also has less verbosity by default. The logging role supports various new options, for example startmsg.regex and endmsg.regex in files inputs, or template, severity and facility options. The role has new variables, such as variables to control configuring a high availability cluster, to manage firewall ports automatically, or variables to search for mssql_tls_cert and mssql_tls_private_key values on managed nodes. The network role now configures network settings for routing rules, supports network configuration using the nmstate API, and users can create connections with IPoIB capability. The ha_cluster role now supports SBD fencing, configuration of Corosync settings, and configuration of bundle resources. RHEL System Roles are now available also in playbooks with fact gathering disabled. Notable new features in 9.1 RHEL System Roles: When these users authenticate with SSSD, and after they complete authentication and authorization at the external IdP, they receive RHEL IdM single sign-on capabilities with Kerberos tickets.įor more information, see Technology Previews - Identity Management Red Hat Enterprise Linux System Roles Identity Management (IdM) in RHEL 9.1 introduces a Technology Preview where you can delegate user authentication to external identity providers (IdPs) that support the OAuth 2 Device Authorization Grant flow. See Section 4.14, “Compilers and development tools” for more information. RHEL 9.1 introduces Maven 3.8 as a new module stream. The java-1.8.0-openjdk packages, which provide the OpenJDK 8 Java Runtime Environment and the OpenJDK 8 Java Software Development Kit.įor more information, see OpenJDK documentation. The java-11-openjdk packages, which provide the OpenJDK 11 Java Runtime Environment and the OpenJDK 11 Java Software Development Kit. The java-17-openjdk packages, which provide the OpenJDK 17 Java Runtime Environment and the OpenJDK 17 Java Software Development Kit. Dynamic programming languages, web and database servers Red Hat Enterprise Linux System Rolesġ1.11. Dynamic programming languages, web and database serversġ0.11. Deprecated functionality"Ĭollapse section "10. Red Hat Enterprise Linux System RolesĬollapse section "9. Important changes to external kernel parametersĨ.17. Dynamic programming languages, web and database serversĤ.18. Distribution of content in RHEL 9"Ĭollapse section "3. Providing feedback on Red Hat documentationĮxpand section "3. ![]()
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