mirror of
https://github.com/LCTT/TranslateProject.git
synced 2024-12-26 21:30:55 +08:00
Merge pull request #1279 from CNprober/working
删除原文 talk/Keey an eye on RHEL 7
This commit is contained in:
Xingyu.Wang
commit
4bcbbbebef
@ -1,59 +0,0 @@
|
||||
CNprober translating... 619913541
|
||||
|
||||
Keep an eye on these 5 new features in RHEL 7
|
||||
================================================================================
|
||||
> RHEL 7 supports Docker containers, systemd, Microsoft-compatible ID management, and XFS for 500TB filesystems
|
||||
|
||||
|
||||
|
||||
After six-plus months of [public beta testing][1] and more than three years after its previous major point release, RHEL (Red Hat Enterprise Linux) version 7 is out. The update speaks to Red Hat's interests in outfitting RHEL with many of the latest enterprise and data center features. Here are the five top-of-the-line new additions to RHEL 7 that caught our eyes.
|
||||
|
||||
### 1. Docker ###
|
||||
|
||||
The biggest new addition to RHEL 7 is [tight integration][2] of [Docker][3], the explosively popular application-virtualization technology. With Docker itself [hitting 1.0 status][4], the timing on RHEL 7 couldn't be more fitting.
|
||||
|
||||
Apps packaged by Docker are isolated from the system and from each other, so they can be moved between systems and still run as expected. RHEL 7 is meant to be able to use Docker as efficiently as possible so that apps don't contend for resources or get confused about which edition of a runtime to use.
|
||||
|
||||
Long-term plans on the road map for Docker in RHEL involve possibly breaking the OS itself into a series of Docker containers, allowing as little or as much of a system to be deployed as needed with minimal overhead. Dubbed "[Project Atomic][5]," the initiative is still in the early stages, with Red Hat planning to deploy it first via its Fedora Linux distribution, nominally used as a testing ground for cutting-edge technologies.
|
||||
|
||||
### 2. Systemd ###
|
||||
|
||||
The inclusion of the systemd process manager may spark controversy among system administrators and Linux mavens. Systemd was developed to replace the init system in use since the days of proprietary Unix, and it allows, for example, more efficient loading of services during the boot process.
|
||||
|
||||
With systemd as a potential sore spot, Red Hat has not rushed in to add it. Fedora has included systemd as a default since version 15, released in 2010, giving Red Hat good experience with how systemd behaves in the real world. Also, systemd isn't joining RHEL 7 arbitrarily, but as part of larger plans for the OS. Red Hat wants to enhance the way Docker containers are supported in RHEL 7 by using systemd, for example.
|
||||
|
||||
### 3. XFS by default ###
|
||||
|
||||
A third major change, though not likely to raise nearly as many eyebrows, applies to the default file system used by RHEL to XFS.
|
||||
|
||||
Originally created by Silicon Graphics International, XFS has long been in production use with Linux systems, and on RHEL 7 it'll support file systems of up to 500TB in size. RHEL 6 used ext4 as the default, although it shipped with XFS as an option. Red Hat competitor Suse Linux [also supports XFS][6], although it [defaults to ext3][7] on installation.
|
||||
|
||||
Unfortunately, there's no real way to migrate from other file systems currently in use on RHEL -- such as ext4 or btrfs-- other than backing up and restoring.
|
||||
|
||||
### 4. Microsoft-compatible identity management ###
|
||||
|
||||
Even admins who aren't fans of Microsoft Windows have a grudging respect for Microsoft Active Directory. RHEL 7 improves the way RHEL deals with AD by adding two key new features. Cross-realm trusts can now be established between RHEL 7 and AD, so AD users can access resources on the Linux side without having to go through another sign-on step. The other big AD-related addition to RHEL 7, realmd, automates both the discovery of AD (or other Red Hat identity services) based on DNS information and the process of joining to it.
|
||||
|
||||
### 5. Performance Co-Pilot ###
|
||||
|
||||
Performance tuning without live statistics is like driving with the windshield painted over, so RHEL 7 introduces a new performance-monitoring system PCP ([Performance Co-Pilot][8]), [originally created][9] by Silicon Graphics International but now available as part of RHEL 7. In addition to monitoring and recording system stats, PCP sports APIs and a tool set for making that data available to other subsystems, such as -- you guessed it -- the newly introduced systemd.
|
||||
|
||||
Another minor addition in this vein: new performance profiles. RHEL 6 already had performance profiles, which are ways to tune RHEL overall to meet specific usage scenarios. RHEL 7 not only defaults to a new profile that emphasizes maximum throughput performance, but includes another new default profile for balancing performance against energy savings.
|
||||
|
||||
--------------------------------------------------------------------------------
|
||||
|
||||
via:http://www.infoworld.com/t/linux/keep-eye-these-5-new-features-in-rhel-7-244023
|
||||
|
||||
译者：[译者ID](https://github.com/译者ID) 校对：[校对者ID](https://github.com/校对者ID)
|
||||
|
||||
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
|
||||
|
||||
[1]:http://www.infoworld.com/t/linux/red-hat-enterprise-linux-7-beta-now-available-232520
|
||||
[2]:http://www.infoworld.com/t/application-virtualization/red-hat-fast-tracks-docker-apps-enterprise-linux-238122
|
||||
[3]:http://www.infoworld.com/t/application-virtualization/docker-unleashed-app-portability-gets-boost-231716
|
||||
[4]:http://www.infoworld.com/d/application-development/review-docker-10-ready-prime-time-243935
|
||||
[5]:http://www.projectatomic.io/
|
||||
[6]:https://www.suse.com/products/server/technical-information/
|
||||
[7]:https://www.suse.com/products/server/technical-information/
|
||||
[8]:http://developerblog.redhat.com/2013/11/19/exploratory-performance-pcp/
|
||||
[9]:http://oss.sgi.com/projects/pcp/index.html
|
||||
@ -0,0 +1,60 @@
|
||||
CNprober translatinged... 619913541
|
||||
|
||||
RHEL 7值得注意的5个新特性
|
||||
================================================================================
|
||||
> RHEL 7 支持Docker容器，systemd，兼容微软的身份管理和支持500TB的XFS文件系统。
|
||||
|
||||
|
||||
|
||||
After six-plus months of [public beta testing][1] and more than three years after its previous major point release, RHEL (Red Hat Enterprise Linux) version 7 is out. The update speaks to Red Hat's interests in outfitting RHEL with many of the latest enterprise and data center features. Here are the five top-of-the-line new additions to RHEL 7 that caught our eyes.
|
||||
在前一个主版本发布3年之后，经过至少6个月的[公开测试][1]，RHEL（Red Hat Enterprise Linux）版本7终于发布了。这次更新表明了红帽子公司对于在RHEL中添加最新的以企业和数据为中心的特性的兴趣。这里列举了其中5个最吸引人眼球的新特性。
|
||||
|
||||
### 1. Docker ###
|
||||
|
||||
RHEL 7中最大的新特性就是[紧密集成][2]了巨受欢迎的应用程序虚拟化技术[Docker][3]。随着[Docker 1.0发布][4]，把它集成到RHEL 7的时机是最合适不过了。
|
||||
|
||||
用Docker包装的应用程序可以独立于操作系统，所以他们可以在操作系统之间移植并且正常运行。RHEL 7打算尽可能高效地使用Docker，以防止应用程序竞争资源或者为使用哪种运行时环境而困惑。
|
||||
|
||||
从RHEL的Docker地图上的长期计划表来看，这可能会超越操作系统本身，发展成一系列的Docker容器，它可以支持用最小的开销部署一个系统。这个被称为"[Atomic项目][5]"的计划还处于早期阶段，红帽子公司准备首先将它首先部署在他的Fedora Linux发行版，仅仅当做对前沿技术的测试。
|
||||
|
||||
### 2. Systemd ###
|
||||
|
||||
包含systemd进程管理器可能引起系统管理员和Linux专家之间激烈的争论。自专用Unix出现以来，systemd就被开发用于替代init系统，它使得启动过程中装载服务更加高效。
|
||||
|
||||
因为systemd的这个潜在的痛处，红帽子公司没有立刻添加systemd（到RHEL）。早在2010发布的Fedora版本15就已经包含了systemd作为默认项目，这给了红帽子公司一次很好的了解systemd在真实世界的运行的经验。同样，systemd也没有武断地加入RHEL 7，只是作为这个OS大计划的一部分。例如，红帽子公司希望通过使用systemd加强对RHEL 7中Docker容器的支持。
|
||||
|
||||
### 3. XFS by default ###
|
||||
|
||||
第3个主要的改变是使XFS成为RHEL默认的文件系统，尽管这可能不那么引人瞩目。
|
||||
|
||||
最初由Silicon Graphics International（硅谷图形公司）创建的XFS在Linux系统上用做生产环境已经很长时间了。在RHEL 7上它将支持高达500TB的文件系统。RHEL 6默认使用ext4，尽管它有XFS选项。红帽子的竞争对手Suse Linux [也支持XFS][6],尽管它安装时[默认使用ext3][7]。
|
||||
|
||||
非常不幸的是，没有真正的方法可以将RHEL目前使用的其他文件系统，比如ext4或者btrfs移植到XFS。只能备份然后重建（来进行移植）。
|
||||
|
||||
### 4. 兼容微软的身份管理 ###
|
||||
|
||||
就算是那些不是微软系统粉丝的管理员也对微软目录服务保持勉强的尊重。RHEL 7添加了两个关键的特性以优化处理微软目录服务的方式。跨域认证现在可以在RHEL 7和微软目录服务之间建立，所以目录服务用户可以直接访问Linux侧的资源，不需要再进行一次登录。RHEL 7另一个目录服务相关的附加特性，是基于DNS信息自动发现和加入目录服务（或者其他红帽子认证服务）。
|
||||
|
||||
### 5. Performance Co-Pilot ###
|
||||
|
||||
进行性能调整的时候看不到实时数据就像是开着挡风玻璃被刷上了油漆的车，所以RHEL 7添加了一个新的性能监控系统PCP([Performance Co-Pilot][8])，PCP最初由Silicon Graphics International（硅谷图形）[创建][9]，但是现在它是RHEL 7的一部分。除了监控和记录系统状态，PCP还为其他子系统提供获取数据的API和工具集，比如正如你猜到的，刚刚介绍的systemd。
|
||||
|
||||
遵循这个思路，另一个次要的附加特性：新的性能配置文件。RHEL 6已经有符合特殊应用场景的调整RHEL的配置文件。RHEL 7不仅默认有一个新的着重使产量最大化的配置文件，而且包含另一个新的平衡性能表现和能源消耗的配置文件。
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
|
||||
via:http://www.infoworld.com/t/linux/keep-eye-these-5-new-features-in-rhel-7-244023
|
||||
|
||||
译者：[love_daisy_love](https://github.com/CNprober) 校对：[校对者ID](https://github.com/校对者ID)
|
||||
|
||||
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
|
||||
|
||||
[1]:http://www.infoworld.com/t/linux/red-hat-enterprise-linux-7-beta-now-available-232520
|
||||
[2]:http://www.infoworld.com/t/application-virtualization/red-hat-fast-tracks-docker-apps-enterprise-linux-238122
|
||||
[3]:http://www.infoworld.com/t/application-virtualization/docker-unleashed-app-portability-gets-boost-231716
|
||||
[4]:http://www.infoworld.com/d/application-development/review-docker-10-ready-prime-time-243935
|
||||
[5]:http://www.projectatomic.io/
|
||||
[6]:https://www.suse.com/products/server/technical-information/
|
||||
[7]:https://www.suse.com/products/server/technical-information/
|
||||
[8]:http://developerblog.redhat.com/2013/11/19/exploratory-performance-pcp/
|
||||
[9]:http://oss.sgi.com/projects/pcp/index.html
|
||||
Loading…
Reference in New Issue
Block a user