RedHat Enterprise Linux 7.5 Reaches Public Beta

eva2000 · Jan 25, 2018

RedHat Enterprise Linux 7.5 public beta is out which means hopefully CentOS 7.5 is due later too

Red Hat Enterprise Linux 7.5 Beta now available

7.5 Release Notes - Red Hat Customer Portal

Product Documentation for Red Hat Enterprise Linux - Red Hat Customer Portal

Red Hat Enterprise Linux 7.5 Reaches Public Beta - Phoronix

Red Hat Enterprise Linux 7.5 Offers Wayland In Tech Preview Form - Phoronix

Virtual Data Optimizer (VDO) sounds interesting

Performance and efficiency
Modern enterprise applications can require extensive amounts of bandwidth and resources to handle the increasing quantities of data produced by organizations, a problem that is compounded as businesses drive towards digital transformation. Much of this data is the same, which can limit efficiency and increase resource costs for IT. Red Hat Enterprise Linux 7.5 Beta introduces virtual data optimizer (VDO), a technology derived from Red Hat’s acquisition of Permabit assets and designed to reduce data redundancy through inline deduplication and compression.

In a primary storage environment delivered on top of Red Hat Enterprise Linux, internal testing has shown that VDO can increase effective capacity by up to 6x, helping to free up existing storage and reduce the costs associated with offsite data replication. These savings, extended to block storage in the public cloud, can reduce storage footprints by up to 83 percent, helping to reduce the hourly cost for active storage and the monthly costs of storing snapshots. This enhances the ability of organizations to get the most out of their existing storage configurations across a common, open standards-based platform in Red Hat Enterprise Linux.
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eva2000 · Jan 25, 2018

Notable changes I think are interesting

Chapter 36. System and Subscription Management - Red Hat Customer Portal

The fastestmirror plug-in now orders mirrors before the metadata download
Previously, when the yum installer ran for the first time after a cache cleanup, the fastestmirror plug-in did not select the fastest mirror before metadata download. This sometimes caused a delay if some mirrors were slow or unavailable. With this update, the fastestmirror plug-in has been modified to have effect on mirror selection before metadata download. As a result, the mirrors are polled and arranged before metadata download, which prevents such delays. (BZ#1428210)
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Chapter 34. Servers and Services - Red Hat Customer Portal

Weekly log rotations are now triggered more predictably
Weekly log rotations were previously performed by the logrotate utility when exactly 7 days (604800 seconds) elapsed since the last rotation. Consequently, if the logrotatecommand was triggered by a cron job slightly sooner, the rotation was delayed until the next run. With this update, weekly log rotations ignore the exact time. As a result, when the day counter advances by 7 or more days since the last rotation, a new rotation is triggered. (BZ#1465720)
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Chapter 28. File Systems - Red Hat Customer Portal

NFS shares no longer become unresponsive after a TCP connection is closed
Previously, NFS clients sometimes entered a 60 second TIME_WAIT period after initiating the TCP disconnect sequence. This happened only when TCP timestamps were disabled on the connection. During the waiting period, the client was unable to reconnect the NFS TCP connection.
Due to waiting in the TIME_WAIT period, the NFS mount points were unresponsive, an rpciod kernel thread was using 100% CPU, and the retrans number in the output of the nfsstat -r command was becoming a very large number. In addition, NFS mounts with lower values of the timeo and retrans options could cause I/O errors.
With this update, the NFS TCP connection is able to reconnect immediately after a disconnect sequence using a different source port. As a result, NFS mounts no longer become unresponsive and rpciod no longer causes a high system load after a connection is closed. (BZ#1479043)
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eva2000 · Jan 25, 2018

Known Issues

Chapter 56. General Updates - Red Hat Customer Portal

Red Hat Enterprise Linux 7 Beta releases can not boot with UEFI Secure Boot enabled
Beta releases of Red Hat Enterprise Linux 7 use a kernel signing key which is not recognized by UEFI firmware, which means it is not normally possible to boot with Secure Boot enabled. However, you can install the system with Secure Boot disabled, manually import the key into your system's firmware, and then enable the setting. The procedure below explains the process.
Note that this only applies to Beta releases of Red Hat Enterprise Linux. The kernel signing keys used in final releases are recognized by most UEFI firmware, making the procedure unnecessary.
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buik · Jan 25, 2018

Almost 4 years ago, since the launch of EL7.
So time for EL8

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RedHat Enterprise Linux 7.5 Reaches Public Beta

eva2000 Administrator Staff Member

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buik “The best traveler is one without a camera.”

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RedHat Enterprise Linux 7.5 Reaches Public Beta

eva2000 Administrator Staff Member

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eva2000 Administrator Staff Member

buik “The best traveler is one without a camera.”

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