此内容没有您所选择的语言版本。

Chapter 3. Major Updates


This section lists all major updates, enhancements, and new features.

Support for SELinux has been added

With this release, the SELinux policy for Red Hat Ceph Storage has been added. SELinux provides another security layer by enforcing Mandatory Access Control (MAC) mechanism over all processes. To learn more about SELinux, see the SELinux User’s and Administrator’s Guide for Red Hat Enterprise Linux 7.

SELinux support for Ceph is not enabled by default. To use it, install the ceph-selinux package. For detailed information about this process, see the SELinux section in the Red Hat Ceph Storage Installation Guide for Red Hat Enterprise Linux.

Note

All Ceph daemons will be down for the time the ceph-selinux package is being installed. Therefore, your cluster node will not be able to serve any data at this point. This operation is necessary in order to update the metadata of the files located on the underlying file system and to make Ceph daemons run with the correct context. This operation may take several minutes depending on the size and speed of the underlying storage.

Package caching for Ubuntu is now supported

With this release, a caching server can be set up to provide Red Hat Ceph Storage repositories for offline Ceph clusters. See the Package Caching for Red Hat Ceph Storage on Ubuntu article on the Red Hat Customer Portal to learn more.

A new "ceph osd crush tree" command has been added

The CRUSH map contains a list of buckets for aggregating the devices into physical locations. With this update, a new ceph osd crush tree command has been added to Red Hat Ceph Storage. The command prints CRUSH buckets and items in a tree view. As a result, it is now easier to analyze the CRUSH map to determine a list of OSD daemons in a particular bucket.

TCMalloc thread cache is now configurable

With Red Hat Ceph Storage 1.3.2, support for modifying the size of the TCMalloc thread cache has been added. Increasing the thread cache size significantly improves Ceph cluster performance.

To set the thread cache size, edit the value of the TCMALLOC_MAX_TOTAL_THREAD_CACHE_BYTES parameter in the Ceph system configuration file, that is /etc/sysconfig/ceph for Red Hat Enterprise Linux and /etc/default/ceph for Ubuntu.

In addition, the default value of TCMALLOC_MAX_TOTAL_THREAD_CACHE_BYTES has been changed from 32 MB to 128 MB.

Red Hat Satellite 5 and Red Hat Ceph Storage integration

Red Hat Ceph Storage nodes can be connected to the Red Hat Satellite 5 Server. The server then hosts package repositories and provides system updates.

Once you register your Ceph nodes with the Satellite 5 server, you can deliver upgrades to the Ceph cluster without allowing a direct connection to the Internet, as well as search and view errata applicable to the cluster nodes.

To learn more, see the How to Register Ceph with Satellite 5 article on the Red Hat Customer Portal.

返回顶部
Red Hat logoGithubredditYoutubeTwitter

学习

尝试、购买和销售

社区

关于红帽文档

通过我们的产品和服务,以及可以信赖的内容,帮助红帽用户创新并实现他们的目标。 了解我们当前的更新.

让开源更具包容性

红帽致力于替换我们的代码、文档和 Web 属性中存在问题的语言。欲了解更多详情,请参阅红帽博客.

關於紅帽

我们提供强化的解决方案,使企业能够更轻松地跨平台和环境(从核心数据中心到网络边缘)工作。

Theme

© 2025 Red Hat