![]() A persistent resource agent can also speed up cluster response time for services with a high state overhead, since maintaining state data can reduce the state overhead for cluster actions such as start, stop, and monitor by not invoking the state separately for each action.įor information on creating a persistent Pacemaker resource agent, you can now consult the article Creating a Persistent (Daemonized) Pacemaker Resource Agent.ĭynamic programming languages, web and database servers RHEL 8 supports the Error Detection and Correction (EDAC) kernel module set in 8th and 9th generation Intel Core Processors.įor more information about the features introduced in this release and changes in the existing functionality, see Section 4.8, “Kernel”.Ī persistent Pacemaker resource agent that maintains state data can detect failures asynchronously and inject a failure into Pacemaker immediately without waiting for the next monitor interval. The in-container clock adjustments after restoration from a checkpoint are also now possible. This feature is suited for changing the date and time inside Linux containers. The time namespace feature is available in RHEL 8.4. As a result, you can observe a significant drop in the total kernel memory footprint and positive effects on memory fragmentation. ![]() The slab memory controller brings improvement in slab utilization, and enables to shift the memory accounting from the page level to the object level. Therefore, latency for specific memory allocation requests is lowered.Ī new implementation of slab memory controller for the control groups technology is now available in RHEL 8. Proactive compaction regularly initiates memory compaction work before a request for allocation is made. The plugin enables automatic subscription for any kernel the system currently uses, and also for kernels to-be-installed in the future. The kpatch-dnf package provides a DNF plugin for subscribing a RHEL system to kernel live patch updates. The support for bareudp devices is now available with the ip link command as a Technology Preview.įor more information about the features introduced in this release and changes in the existing functionality, see Section 4.7, “Networking”. The iproute2 utility introduces three new traffic control ( tc) actions mac_push, push_eth, and pop_eth to add MPLS labels, build an Ethernet header at the beginning of the packet, and drop the outer Ethernet header respectively. The MPLS support is available in this release as a Technology Preview. For example, you can add tc filters for managing packets received from specific ports or carrying specific types of traffic, in a consistent way. The Multi-protocol Label Switching (MPLS) is an in-kernel data-forwarding mechanism to route traffic flow across enterprise networks. The nmstate packages provide a library and the nmstatectl command-line utility to manage host network settings in a declarative manner. Nmstate is a network API for hosts and fully supported in RHEL 8.4. See Section 4.6, “Security” for more information. The rhel8-tang container image provides Tang-server decryption capabilities for Clevis clients that run either in OpenShift Container Platform (OCP) clusters or in separate virtual machines. The fapolicyd framework now provides integrity checking, and the RPM plugin now registers any system update that is handled by either the YUM package manager or the RPM Package Manager. Updated RHEL8 STIG profile to DISA STIG v1r1 Notable changes to internationalization in RHEL 8Īdded RHEL8 ANSSI-BP-028 Minimal, Intermediary and Enhanced profiles Red Hat Enterprise Linux 8 international languagesġ1.2. Internationalization"Ĭollapse section "11. Dynamic programming languages, web and database serversĮxpand section "11. Red Hat Enterprise Linux System Rolesġ0.10. Deprecated functionality"Ĭollapse section "9. Red Hat Enterprise Linux System RolesĮxpand section "9. Red Hat Enterprise Linux System RolesĬollapse section "8. Dynamic programming languages, web and database serversħ.14. Important changes to external kernel parameters"ħ.10. Important changes to external kernel parameters"Ĭollapse section "5. ![]() Important changes to external kernel parametersĮxpand section "5. ![]() Dynamic programming languages, web and database serversĤ.17. Distribution of content in RHEL 8"Ĭollapse section "3. Providing feedback on Red Hat documentationĮxpand section "3.
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