YUM Is Dead. Long Live YUM!
YUM is dead. Long live YUM! Red Hat Enterprise Linux 7.6 High Touch Beta Terry Bowling, Senior Technical Product Manager Twin Cities Red Hat User Group September 2018 Red Hat Enterprise Linux High Touch Beta
DISCLAIMER The content set forth herein is Red Hat confidential information and does not constitute in any way a binding or legal agreement or impose any legal obligation or duty on Red Hat. This information is provided for discussion purposes only and is subject to change for any or no reason. Red Hat Enterprise Linux High Touch Beta
Agenda What will we cover in the following 15 minutes? What is YUM v4? What are the main features & benefits? Compatibility with YUM v3 Availability of YUM v4 in Red Hat Enterprise Linux 7.6 Demo Ask for feedback Questions Red Hat Enterprise Linux High Touch Beta
What is YUM v4? And what is DNF? YUM is a utility that allows users to manage packages on their systems. The current version of YUM in Red Hat Enterprise Linux 7 is YUM v3. YUM v4 is the new version that brings speed and the latest innovations to package management. 4 Based on upstream DNF technology, which you might know from Fedora. Red Hat Enterprise Linux High Touch Beta
Features and benefits of YUM v4 Why you should care. 5 Faster: Improved dependency resolver. Fixes in the package management stack lead to shorter verification time. Software updates take less time resulting in reduced maintenance window. Smaller: Many layers written in C. Fewer Python dependencies, smaller footprint. Red Hat Enterprise Linux High Touch Beta
Compatibility with YUM v3 Anything new you need to learn? 6 Compatibility with current workflows on command line is retained. yum4 command instead of yum. Python API has changed in YUM v4. YUM v4 can be installed along with YUM v3. Both can be used with the exception of that the history is not shared. YUM databases are in different locations. A transaction performed using YUM v4 cannot be rolled back using YUM v3 and vice versa. Red Hat Enterprise Linux High Touch Beta
Compatibility with Ansible Anything new you need to learn? Ansible Packages module will still default to YUM v3 on RHEL 7 Ansible DNF module could be specified if desired Remember, yum4 is still tech preview 7 Red Hat Enterprise Linux High Touch Beta
What does it actually look like? 7.6 Beta [root@rhel7beta ]# ls -lF /usr/bin/{yum,yum4,dnf} lrwxrwxrwx. 1 root root 5 Sep 4 07:50 /usr/bin/dnf - dnf-2* lrwxrwxrwx. 1 root root 5 Sep 4 07:50 /usr/bin/yum4 - dnf-2* -rwxr-xr-x. 1 root root 801 Aug 15 12:10 /usr/bin/yum* Fedora 28 (DNF and YUM are exactly the same!!!) [root@f28 ] ls -lF /usr/bin/{yum,dnf} lrwxrwxrwx. 1 root root 5 Apr 18 10:29 /usr/bin/dnf - dnf-3* lrwxrwxrwx. 1 root root 5 Apr 18 10:29 /usr/bin/yum - dnf-3* 8 Red Hat Enterprise Linux High Touch Beta
Availability of YUM v4 in RHEL 7.6 How can I use it? 9 Distributed in the Extras channel. YUM v4 will be provided as Tech Preview in Red Hat Enterprise Linux 7.6. Early look at future technologies. Find other unknown compatibility issues with real enterprise environments. Gather feedback. Red Hat Enterprise Linux High Touch Beta
DEMO Red Hat Enterprise Linux High Touch Beta
# Preparation subscription-manager repos \ --enable rhel-7-server-optional-htb-rpms \ --enable rhel-7-server-extras-beta-rpms yum install nextgen-yum4 dnf-plugins-core yum-utils # Many commands remained identical: list, search, install, reinstall, remove, etc. ls -lF /usr/bin/{yum,dnf} yum list wget; yum4 list wget yum search wget; yum4 search wget yum install wget; yum4 reinstall wget # Fedora users with 'dnf' muscle memory can call their favorite tool too dnf remove wget Red Hat Enterprise Linux High Touch Beta
# Sometimes YUM v4 is more intuitive and simply does what is requested. yum install systemd-219-59.el7 --assumeno yum4 install systemd-219-59.el7 --assumeno # Downgrades are handled properly, this also includes distro-sync yum distro-sync --assumeno yum4 distro-sync --assumeno Red Hat Enterprise Linux High Touch Beta
# Tools from yum-utils have their alternatives as yum4 sub-commands repoquery --whatprovides bash yum4 repoquery --whatprovides bash # Some behavior has changed. The intention was to make it consistent # across the whole software management stack and more straightforward. repoquery 'bash*' repoquery 'bash*' --show-duplicates # misleading yum4 repoquery 'bash*' yum4 repoquery 'bash*' --latest-limit 1 Red Hat Enterprise Linux High Touch Beta
# Testing advanced query commands yum4 yum4 yum4 yum4 yum4 yum4 yum4 yum4 updateinfo updateinfo updateinfo updateinfo updateinfo updateinfo updateinfo updateinfo Red Hat Enterprise Linux High Touch Beta summary available sec summary available list available list available sec list available --sec-severity Critical list --advisory RHSA-2018:0805 info --advisory RHSA-2018:0805 list --cves CVE-2018-1000001
# Testing install/upgrades of security errata yum4 yum4 yum4 yum4 yum4 upgrade upgrade upgrade upgrade upgrade --security --sec-severity Critical --sec-severity Critical --sec-severity Important --advisory RHSA-2018:1062 --cves CVE-2018-1000001 Red Hat Enterprise Linux High Touch Beta
Ask for feedback How you can help us make Red Hat Enterprise Linux even better! Please, file bugs if it works differently than expected! Our Engineering team is interested in feedback, including detailed use cases. 16 Compatibility: Does YUM v4 work as you expect in your workflows? Red Hat Enterprise Linux High Touch Beta
For more information. Links Upstream documentation: https://dnf.readthedocs.io/en/latest/ File bugs in Red Hat Bugzilla We’d love to hear your feedback! Access the private group on the Customer Portal to provide further feedback on this presentation: https://access.redhat.com/groups/1279043 Red Hat Enterprise Linux High Touch Beta
Customers & Distributions need a known release cadence Customers & Distributions need a known lifecycle Fedora Release Cadence 6 months Fedora LifeCycle 13 months RHEL LifeCycle 10 years! Realistic application lifecycles do not organically match: - Distribution lifecycles - Customer workload lifecycles
A new way to build and deliver content Delivers more choices to choose from for your workload needs Separates lifecycle of the Application And your Workload From the distribution lifecycle and release cadence Powers Fedora Appstream, provides more choices for desired workloads
Questions? Red Hat Enterprise Linux High Touch Beta
Long live YUM! Red Hat Enterprise Linux 7.6 High Touch Beta Terry Bowling, Senior Technical Product Manager Twin Cities Red Hat User Group September 2018. Red Hat Enterprise Linux High Touch Beta DISCLAIMER The content set forth herein is Red Hat confidential information and
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DRAMATIS PERSONÆ THE MIKADO OF JAPAN NANKI-POO (his Son, disguised as a wandering minstrel, and in love with YUM-YUM) KO-KO (Lord High Executioner of Titipu) POOH-BAH (Lord High Everything Else) PISH-TUSH (a Noble Lord) GO-TO (a Noble Lord) YUM-YUM PITTI-SING Three Sisters — Wards of Ko-Ko. PEEP-BO KATISHA (an
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