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Oracle Linux 8.0 release

via:开源中国     time:2019/7/20 8:00:52     readed:101

The main highlights of this release include:

Application Streams

Oracle Linux 8 introduces the concept of Application Streams, which delivers and updates multiple versions of user space components more frequently than core operating system packages. Application Streams contains the necessary system components and a set of applications that were previously distributed in the software set, as well as other products and programs.

System Management

  • Introduced the Dandified Yum Package Manager, a new version of the DNF-based yum tool that installs, updates, and removes packages on RPM-based Linux distributions.

  • Introducing CockpitserverRemote Manager, a simple, lightweight yet powerful interactive GNU/Linux server remote manager that provides real-time Linux sessions through a web browser.

Kernel

  • The modinfo command has been updated to identify and display module signature information signed in CMS and PKCS#7 format.

  • A set of kernel modules is moved into the kernel-modules-extra package, which means that by default these modules are not installed and cannot be loaded by non-root users, as they are also blacklisted by default.

  • The memory bus limit has been extended to 128 PiB of virtual address space and 4 PB of physical memory. The I/O Memory Management Unit (IOMMU) code in the Linux kernel is also updated to enable the 5-level paging table.

  • The kdump feature allows the crash kernel and initramfs to be loaded as early as possible so that it can capture vmcore information, including early kernel crashes.

Container and virtualization

  • New container tools: Podman, Buildah and skopeo are now available on Oracle Linux 8:

    • Podman:Podman is part of Libpod and its definition can be simply represented by this command: `alias docker=podman`.

    • Buildah:Buildah is a tool for building OCI (Open Container Initiative) images.

    • Skopeo:skopeo is a command-line tool for performing various operations on container images and mirror libraries, supporting the use of OCI images with the original Docker v2 image.

  • The Q35 model is a more modern PCI Express-based machine type that is now available for KVM.

  • Additional information is added to the KVM Guest Crash Report, which makes it easier to diagnose and fix problems when using KVM virtualization.

File system and storage

  • Enhanced Device Mapper Multipathing

  • The SCSI Multiqueue driver allows the block layer to passSSDAnd multi-core systems scale well

  • Stratis, a simple solution for managing local storage

  • XFS supports the shared copy-on-write (COW) data extent feature, so two or more files can share a common set of data blocks.

In addition to the network, identity management and security, please see the release notes for details:

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