Difference between revisions of "RHEL7"

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UNDER CONSTRUCTION
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[https://en.wikipedia.org/wiki/Red_Hat_Enterprise_Linux Red Hat Enterprise Linux] 7 is an operating system published by Red Hat, Inc., which is currently a subsidiary of IBM.
 
 
Red Hat Enterprise Linux 7 is an operating system published by Red Hat, Inc.
 
  
  
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===Kernel and Performance===
 
===Kernel and Performance===
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* Based on Linux 3.10.0-957 kernel.
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* Initial process is changed to systemd.
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* Includes [https://en.wikipedia.org/wiki/Security-Enhanced_Linux Security-Enhanced Linux].
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===Virtualization===
 
===Virtualization===
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Users can run virtual machines within RHEL 7 using its built-in [https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/virtualization_getting_started_guide/chap-virtualization_getting_started-products Kernel-based Virtual Machine], or KVM. UMIACS also supports the use of [https://www.sylabs.io/docs/ Singularity], a container application that is an alternative to Docker.
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=== File System Capabilities===
 
=== File System Capabilities===
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The default file system is now XFS. Here is an overview of the supported file systems in RHEL7. The information in this section is taken from [https://access.redhat.com/articles/796293 this Redhat page] unless otherwise noted.
  
===Security===
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* [https://en.wikipedia.org/wiki/XFS XFS]
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** "[RHEL7] supports XFS filesystem sizes of up to 500 TB."
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** "XFS supports journaling to minimize data loss in the event of a system crash. Journal data are written to the log section while the file system is active and read when the filesystem is mounted (to recover any data not already written to disk)."
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* [https://en.wikipedia.org/wiki/Ext4 ext4]
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** "The maximum standalone filesystem size for ext4 filesystems...[is]...50 TB."
  
===Desktop===
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*[https://en.wikipedia.org/wiki/Btrfs Btrfs]
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** This an "an unsupported Technology Preview," and should be used with caution.
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<!-- Also use https://access.redhat.com/articles/3129891 -->
  
===Networking===
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===Security===
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In addition to the standard Linux security architecture, RHEL7 includes [https://en.wikipedia.org/wiki/Security-Enhanced_Linux Security-Enhanced Linux], a module which implements a [https://en.wikipedia.org/wiki/Mandatory_access_control mandatory access control] model. Tutorials for configuring SELinux in RHEL are available [https://access.redhat.com/articles/217213 here].

Latest revision as of 20:30, 22 May 2019

Red Hat Enterprise Linux 7 is an operating system published by Red Hat, Inc., which is currently a subsidiary of IBM.


Features

A summary of important improvements are listed below.

Kernel and Performance

Virtualization

Users can run virtual machines within RHEL 7 using its built-in Kernel-based Virtual Machine, or KVM. UMIACS also supports the use of Singularity, a container application that is an alternative to Docker.

File System Capabilities

The default file system is now XFS. Here is an overview of the supported file systems in RHEL7. The information in this section is taken from this Redhat page unless otherwise noted.

  • XFS
    • "[RHEL7] supports XFS filesystem sizes of up to 500 TB."
    • "XFS supports journaling to minimize data loss in the event of a system crash. Journal data are written to the log section while the file system is active and read when the filesystem is mounted (to recover any data not already written to disk)."
  • ext4
    • "The maximum standalone filesystem size for ext4 filesystems...[is]...50 TB."
  • Btrfs
    • This an "an unsupported Technology Preview," and should be used with caution.

Security

In addition to the standard Linux security architecture, RHEL7 includes Security-Enhanced Linux, a module which implements a mandatory access control model. Tutorials for configuring SELinux in RHEL are available here.