RHEL7: Difference between revisions
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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., which is currently a subsidiary of IBM. | ||
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*[https://en.wikipedia.org/wiki/Btrfs Btrfs] | *[https://en.wikipedia.org/wiki/Btrfs Btrfs] | ||
** This an "an unsupported Technology Preview," and should be used with caution. | ** This an "an unsupported Technology Preview," and should be used with caution. | ||
<!-- Also use https://access.redhat.com/articles/3129891 --> | <!-- Also use https://access.redhat.com/articles/3129891 --> | ||
===Security=== | ===Security=== | ||
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]. | 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]. | ||
Revision as of 14:47, 21 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
- Based on Linux 3.10.0-957 kernel.
- Initial process is changed to systemd.
- Includes Security-Enhanced Linux.
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.