{"id":12039,"date":"2018-12-13T15:05:17","date_gmt":"2018-12-13T14:05:17","guid":{"rendered":"https:\/\/www.dbi-services.com\/blog\/red-hat-enterprise-linux-8-application-streams\/"},"modified":"2018-12-13T15:05:17","modified_gmt":"2018-12-13T14:05:17","slug":"red-hat-enterprise-linux-8-application-streams","status":"publish","type":"post","link":"https:\/\/www.dbi-services.com\/blog\/red-hat-enterprise-linux-8-application-streams\/","title":{"rendered":"Red Hat Enterprise Linux 8 – Application Streams"},"content":{"rendered":"

You may have heard that : Red Hat Enterprise Linux 8 is available for downloading in beta version since few weeks…
\nYou want to download it ? Click here<\/a>.
\n\"RH_EnterpriseLinux8beta_stacked_RGB_Blue\"<\/a>A significant change coming with this new version is the way the applications packages are provided. As you know, up to RHEL7 packages were downloaded via repositories listed in .repo files located by default under \/etc\/yum.repos.d\/. This is still the same with RHEL8, but two new major repositories are available in the default redhat.repo files.<\/p>\n

In order to get access to them we must of course register the server to a Red Hat Subscription…
\n[root@rhel8beta1 ~]# subscription-manager register --username xxx.yyy@zzz.com<\/span>
\nRegistering to: subscription.rhsm.redhat.com:443\/subscription
\nPassword:
\nThe system has been registered with ID: e42829a5-8a8e-42d3-a69a-07a1499e9b0e
\nThe registered system name is: rhel8beta1
\n[root@rhel8beta1 ~]#<\/code><\/p>\n

…and attach it to a Pool (here the Pool will be chosen automatically) :
\n[root@rhel8beta1 ~]# subscription-manager attach --auto<\/span>
\nInstalled Product Current Status:
\nProduct Name: Red Hat Enterprise Linux for x86_64 Beta
\nStatus: Subscribed
\n[root@rhel8beta1 ~]# <\/code><\/p>\n

As the \/etc\/yum.repos.d\/redhat.repo is now available, let’s check which repository does it contain :
\n[root@rhel8beta1 ~]# grep -B1 name \/etc\/yum.repos.d\/redhat.repo<\/span>
\n[rhel-8-for-x86_64-rt-beta-debug-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - Real Time Beta (Debug RPMs)
\n--
\n[rhel-8-for-x86_64-rt-beta-source-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - Real Time Beta (Source RPMs)
\n--
\n[rhel-8-for-x86_64-supplementary-beta-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - Supplementary Beta (RPMs)
\n--
\n[rhel-8-for-x86_64-resilientstorage-beta-debug-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - Resilient Storage Beta (Debug RPMs)
\n--
\n[fast-datapath-beta-for-rhel-8-x86_64-source-rpms]
\nname = Fast Datapath Beta for RHEL 8 x86_64 (Source RPMs)
\n--
\n[codeready-builder-beta-for-rhel-8-x86_64-debug-rpms]
\nname = Red Hat CodeReady Linux Builder Beta for RHEL 8 x86_64 (Debug RPMs)
\n--
\n[codeready-builder-beta-for-rhel-8-x86_64-source-rpms]
\nname = Red Hat CodeReady Linux Builder Beta for RHEL 8 x86_64 (Source RPMs)
\n--
\n[rhel-8-for-x86_64-appstream-beta-source-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - AppStream Beta (Source RPMs)
\n--
\n[rhel-8-for-x86_64-nfv-beta-source-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - Real Time for NFV Beta (Source RPMs)
\n--
\n[rhel-8-for-x86_64-nfv-beta-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - Real Time for NFV Beta (RPMs)
\n--
\n[rhel-8-for-x86_64-resilientstorage-beta-source-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - Resilient Storage Beta (Source RPMs)
\n--
\n[codeready-builder-beta-for-rhel-8-x86_64-rpms]
\nname = Red Hat CodeReady Linux Builder Beta for RHEL 8 x86_64 (RPMs)
\n--
\n[rhel-8-for-x86_64-supplementary-beta-debug-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - Supplementary Beta (Debug RPMs)
\n--
\n[rhel-8-for-x86_64-highavailability-beta-source-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - High Availability Beta (Source RPMs)
\n--
\n[rhel-8-for-x86_64-supplementary-beta-source-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - Supplementary Beta (Source RPMs)
\n--
\n[rhel-8-for-x86_64-appstream-beta-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - AppStream Beta (RPMs)<\/strong>
\n--
\n[rhel-8-for-x86_64-rt-beta-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - Real Time Beta (RPMs)
\n--
\n[rhel-8-for-x86_64-appstream-beta-debug-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - AppStream Beta (Debug RPMs)
\n--
\n[fast-datapath-beta-for-rhel-8-x86_64-debug-rpms]
\nname = Fast Datapath Beta for RHEL 8 x86_64 (Debug RPMs)
\n--
\n[rhel-8-for-x86_64-resilientstorage-beta-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - Resilient Storage Beta (RPMs)
\n--
\n[rhel-8-for-x86_64-baseos-beta-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - BaseOS Beta (RPMs)<\/strong>
\n--
\n[rhel-8-for-x86_64-nfv-beta-debug-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - Real Time for NFV Beta (Debug RPMs)
\n--
\n[fast-datapath-beta-for-rhel-8-x86_64-rpms]
\nname = Fast Datapath Beta for RHEL 8 x86_64 (RPMs)
\n--
\n[rhel-8-for-x86_64-baseos-beta-debug-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - BaseOS Beta (Debug RPMs)
\n--
\n[rhel-8-for-x86_64-highavailability-beta-debug-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - High Availability Beta (Debug RPMs)
\n--
\n[rhel-8-for-x86_64-highavailability-beta-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - High Availability Beta (RPMs)
\n--
\n[rhel-8-for-x86_64-baseos-beta-source-rpms]
\nname = Red Hat Enterprise Linux 8 for x86_64 - BaseOS Beta (Source RPMs)
\n[root@rhel8beta1 ~]#
\n<\/code><\/p>\n

AppStream ? BaseOS ? What’s that… This is what we will discover in this blog.<\/p>\n

First of all we can see that both are enabled by default :
\n[root@rhel8beta1 ~]# subscription-manager repos --list-enabled<\/span>
\n+----------------------------------------------------------+
\nAvailable Repositories in \/etc\/yum.repos.d\/redhat.repo
\n+----------------------------------------------------------+
\nRepo ID: rhel-8-for-x86_64-baseos-beta-rpms<\/strong>
\nRepo Name: Red Hat Enterprise Linux 8 for x86_64 - BaseOS Beta (RPMs)
\nRepo URL: https:\/\/cdn.redhat.com\/content\/beta\/rhel8\/8\/x86_64\/baseos\/os
\nEnabled: 1
\n<\/br>
\nRepo ID: rhel-8-for-x86_64-appstream-beta-rpms<\/strong>
\nRepo Name: Red Hat Enterprise Linux 8 for x86_64 - AppStream Beta (RPMs)
\nRepo URL: https:\/\/cdn.redhat.com\/content\/beta\/rhel8\/8\/x86_64\/appstream\/os
\nEnabled: 1
\n[root@rhel8beta1 ~]#<\/code><\/p>\n

BaseOS<\/h3>\n

“Content in BaseOS is intended to provide the core set of the underlying OS functionality that provides the foundation for all installations<\/em>“.
\nThis is how Red Hat define it. Over a thousand of packages are available from the BaseOS repository :
\n[root@rhel8beta1 ~]# yum --disablerepo \"*\" --enablerepo \"rhel-8-for-x86_64-baseos-beta-rpms\" list available | wc -l<\/span>
\n1145
\n[root@rhel8beta1 ~]#<\/code>
\nYou can get the full list here<\/a>.
\nBasically, those packages are system-related and are mainly used to manage and configure the OS and services (such as NetworkManager, Chrony, Dracut, aso…). In other words most of them are intended for use by system administrators. So nothing very new here except for the fact that they are all grouped in a unique dedicated repository.<\/p>\n

AppStream<\/h3>\n

The second repository contains much more packages (full list here<\/a>) :
\n[root@rhel8beta1 \/]# yum --disablerepo \"*\" --enablerepo \"rhel-8-for-x86_64-appstream-beta-rpms\" list available | wc -l<\/span>
\n4318
\n[root@rhel8beta1 \/]# <\/code><\/p>\n

Application Stream provides additional user space applications, runtime languages and databases. It replaces the “extra” Repos and the Software Collection. All the content in AppStream is available in two formats : the well known RPM format and a brand new one called “module” which an extension to the RPM format.
\nA module is a set of RPM packages that are linked together. For exemple, if you want to check which packages are concerned by the Postgresql module, you must use the new “yum module<\/em>” command :
\n[root@rhel8beta1 \/]# yum module list postgresql<\/span>
\nUpdating Subscription Management repositories.
\nUpdating Subscription Management repositories.
\nLast metadata expiration check: 0:47:42 ago on Mon Nov 26 15:13:03 2018.
\nRed Hat Enterprise Linux 8 for x86_64 - AppStream Beta (RPMs)
\nName Stream Profiles Summary
\npostgresql 10 [d] client, default [d] postgresql module
\npostgresql 9.6 client, default [d] postgresql module
\n<\/br>
\nHint: [d]efault, [e]nabled, [x]disabled, [i]nstalled
\n[root@rhel8beta1 \/]#<\/code> <\/p>\n

By the way, YUM is no longer the default Packages Manager with RHEL8. The command is still available but it’s actually an alias of the DNF tool (coming from Fedora) :
\n[root@rhel8beta1 ~]# which yum<\/span>
\n\/usr\/bin\/yum
\n[root@rhel8beta1 ~]# ll \/usr\/bin\/yum<\/span>
\nlrwxrwxrwx. 1 root root 5 Oct 15 10:25 \/usr\/bin\/yum -> dnf-3
\n[root@rhel8beta1 ~]#<\/code><\/p>\n

If you want to have a look to the main usage differences between YUM and DNF, check that :
\n[root@rhel8beta1 \/]# man yum2dnf<\/span>
\nYUM2DNF(8)
\n<\/br>
\nNAME
\n yum2dnf - Changes in DNF compared to YUM
\n[...]
\n[...]<\/code><\/p>\n

Let’s go back to our modules. Here is how you can check the packages contained in a module :
\n[root@rhel8beta1 \/]# yum module info postgresql<\/span>
\nUpdating Subscription Management repositories.
\nUpdating Subscription Management repositories.
\nRed Hat Enterprise Linux 8 for x86_64 - AppStream Beta (RPMs) 2.9 kB\/s | 4.1 kB 00:01
\nRed Hat Enterprise Linux 8 for x86_64 - BaseOS Beta (RPMs) 2.9 kB\/s | 4.1 kB 00:01
\nName : postgresql
\nStream : 10 [d]
\nVersion : 20180813131250
\nContext : 9edba152
\nProfiles : client, default [d]
\nDefault profiles : default
\nRepo : rhel-8-for-x86_64-appstream-beta-rpms
\nSummary : postgresql module
\nDescription : This postgresql module has been generated.
\nArtifacts : postgresql-0:10.5-1.el8+1546+27ad5f8e.x86_64
\n : postgresql-contrib-0:10.5-1.el8+1546+27ad5f8e.x86_64
\n : postgresql-docs-0:10.5-1.el8+1546+27ad5f8e.x86_64
\n : postgresql-plperl-0:10.5-1.el8+1546+27ad5f8e.x86_64
\n : postgresql-plpython3-0:10.5-1.el8+1546+27ad5f8e.x86_64
\n : postgresql-pltcl-0:10.5-1.el8+1546+27ad5f8e.x86_64
\n : postgresql-server-0:10.5-1.el8+1546+27ad5f8e.x86_64
\n : postgresql-server-devel-0:10.5-1.el8+1546+27ad5f8e.x86_64
\n : postgresql-static-0:10.5-1.el8+1546+27ad5f8e.x86_64
\n : postgresql-test-0:10.5-1.el8+1546+27ad5f8e.x86_64
\n : postgresql-test-rpm-macros-0:10.5-1.el8+1546+27ad5f8e.x86_64
\n : postgresql-upgrade-0:10.5-1.el8+1546+27ad5f8e.x86_64
\n : postgresql-upgrade-devel-0:10.5-1.el8+1546+27ad5f8e.x86_64
\n<\/br>
\nName : postgresql
\nStream : 9.6
\nVersion : 20180813131400
\nContext : 9edba152
\nProfiles : client, default [d]
\nDefault profiles : default
\nRepo : rhel-8-for-x86_64-appstream-beta-rpms
\nSummary : postgresql module
\nDescription : This postgresql module has been generated.
\nArtifacts : postgresql-0:9.6.10-1.el8+1547+210b7007.x86_64
\n : postgresql-contrib-0:9.6.10-1.el8+1547+210b7007.x86_64
\n : postgresql-docs-0:9.6.10-1.el8+1547+210b7007.x86_64
\n : postgresql-plperl-0:9.6.10-1.el8+1547+210b7007.x86_64
\n : postgresql-plpython3-0:9.6.10-1.el8+1547+210b7007.x86_64
\n : postgresql-pltcl-0:9.6.10-1.el8+1547+210b7007.x86_64
\n : postgresql-server-0:9.6.10-1.el8+1547+210b7007.x86_64
\n : postgresql-server-devel-0:9.6.10-1.el8+1547+210b7007.x86_64
\n : postgresql-static-0:9.6.10-1.el8+1547+210b7007.x86_64
\n : postgresql-test-0:9.6.10-1.el8+1547+210b7007.x86_64
\n : postgresql-test-rpm-macros-0:9.6.10-1.el8+1547+210b7007.x86_64
\n<\/br>
\nHint: [d]efault, [e]nabled, [x]disabled, [i]nstalled
\n[root@rhel8beta1 \/]# <\/code><\/p>\n

The above output shows that a module can contain several streams. Each stream represent a different version of the application.
\nMoreover, a module can have couple of profiles. A profile is a set of certain RPM packages selected to be installed together for a particular use-case (server, client, development, minimal install, aso…).<\/p>\n

To install an application from the default stream and with the default profile, add the ‘@’ character before the application name :
\n[root@rhel8beta1 \/]# yum install @postgresql<\/span>
\nUpdating Subscription Management repositories.
\nUpdating Subscription Management repositories.
\nLast metadata expiration check: 0:25:55 ago on Mon Nov 26 16:27:13 2018.
\nDependencies resolved.
\n=======================================================================================================================================================================================
\n Package Arch Version Repository Size
\n=======================================================================================================================================================================================
\nInstalling group\/module packages:
\n postgresql-server x86_64 10.5-1.el8+1546+27ad5f8e rhel-8-for-x86_64-appstream-beta-rpms 5.1 M
\nInstalling dependencies:
\n libpq x86_64 10.5-1.el8 rhel-8-for-x86_64-appstream-beta-rpms 188 k
\n postgresql x86_64 10.5-1.el8+1546+27ad5f8e rhel-8-for-x86_64-appstream-beta-rpms 1.5 M
\nInstalling module profiles:
\n postgresql\/default
\nEnabling module streams:
\n postgresql 10
\n<\/br>
\nTransaction Summary
\n=======================================================================================================================================================================================
\nInstall 3 Packages
\n<\/br>
\nTotal download size: 6.7 M
\nInstalled size: 27 M
\nIs this ok [y\/N]: y
\n[...]
\n[...]
\n[root@rhel8beta1 \/]#<\/code>
\nYou can also use the “yum module<\/strong> install postgresql<\/em>” command.<\/p>\n

Quick check :
\n[root@rhel8beta1 ~]# which postgres<\/span>
\n\/usr\/bin\/postgres
\n[root@rhel8beta1 ~]# \/usr\/bin\/postgres --version
\npostgres (PostgreSQL) 10.5<\/strong>
\n[root@rhel8beta1 ~]#<\/code><\/p>\n

And if you want to install Postgres from an oldest stream and with another profile (here Postgres 9.6 client only) :
\n[root@rhel8beta1 \/]# yum install @postgresql:9.6\/client<\/span>
\nUpdating Subscription Management repositories.
\nUpdating Subscription Management repositories.
\nLast metadata expiration check: 0:33:45 ago on Mon Nov 26 16:27:13 2018.
\nDependencies resolved.
\n=======================================================================================================================================================================================
\n Package Arch Version Repository Size
\n=======================================================================================================================================================================================
\nInstalling group\/module packages:
\n postgresql x86_64 9.6.10-1.el8+1547+210b7007 rhel-8-for-x86_64-appstream-beta-rpms 1.4 M
\nInstalling dependencies:
\n libpq x86_64 10.5-1.el8 rhel-8-for-x86_64-appstream-beta-rpms 188 k
\nInstalling module profiles:
\n postgresql\/client
\nEnabling module streams:
\n postgresql 9.6
\n<\/bR>
\nTransaction Summary
\n=======================================================================================================================================================================================
\nInstall 2 Packages
\n<\/br>
\nTotal download size: 1.6 M
\nInstalled size: 5.8 M
\nIs this ok [y\/N]: y
\n[...]
\n[...]
\n[root@rhel8beta1 \/]# <\/code><\/p>\n

Check :
\n[root@rhel8beta1 ~]# which postgres<\/span>
\n\/usr\/bin\/postgres
\n[root@rhel8beta1 ~]# \/usr\/bin\/postgres --version<\/span>
\npostgres (PostgreSQL) 9.6.10<\/strong>
\n[root@rhel8beta1 ~]#
\n<\/br>
\n[root@rhel8beta1 ~]# yum module list --enabled<\/span>
\nUpdating Subscription Management repositories.
\nUpdating Subscription Management repositories.
\nLast metadata expiration check: 0:04:43 ago on Thu Dec 13 08:34:05 2018.
\nRed Hat Enterprise Linux 8 for x86_64 - AppStream Beta (RPMs)
\nName Stream Profiles Summary
\ncontainer-tools 1.0 [d][e] default [d] Common tools and dependencies for container runtimes
\npostgresql 9.6 [e] client [i], default [d] [i] postgresql module
\nsatellite-5-client 1.0 [d][e] gui, default [d] Red Hat Satellite 5 client packages
\nvirt rhel [d][e] default [d] Virtualization module
\n<\/br>
\nHint: [d]efault, [e]nabled, [x]disabled, [i]nstalled
\n[root@rhel8beta1 ~]#<\/code> <\/p>\n

Hummm… Only the module 9.6 is enabled ? Let’s try to enable the version 10 :
\n[root@rhel8beta1 ~]# yum module enable postgresql:10<\/span>
\nUpdating Subscription Management repositories.
\nUpdating Subscription Management repositories.
\nLast metadata expiration check: 0:08:06 ago on Thu Dec 13 07:52:30 2018.
\nDependencies resolved.
\n======================================================================================================================================
\n Package Arch Version Repository Size
\n======================================================================================================================================
\nSwitching module streams:<\/span>
\n postgresql 9.6 -> 10<\/span>
\n<\/br>
\nTransaction Summary
\n======================================================================================================================================
\n<\/br>
\nIs this ok [y\/N]: y
\nComplete!
\n<\/br>
\nSwitching module streams does not alter installed packages<\/strong> (see 'module enable' in dnf(8) for details)
\n[root@rhel8beta1 ~]#
\n<\/code> <\/p>\n

It’s better now :
\n[root@rhel8beta1 ~]# yum module list --enabled<\/span>
\nFailed to set locale, defaulting to C
\nUpdating Subscription Management repositories.
\nUpdating Subscription Management repositories.
\nLast metadata expiration check: 0:13:22 ago on Thu Dec 13 08:34:05 2018.
\nRed Hat Enterprise Linux 8 for x86_64 - AppStream Beta (RPMs)
\nName Stream Profiles Summary
\ncontainer-tools 1.0 [d][e] default [d] Common tools and dependencies for container runtimes
\npostgresql 10 [d][e] client [i], default [d] [i] postgresql module
\nsatellite-5-client 1.0 [d][e] gui, default [d] Red Hat Satellite 5 client packages
\nvirt rhel [d][e] default [d] Virtualization module
\n<\/br>
\nHint: [d]efault, [e]nabled, [x]disabled, [i]nstalled
\n[root@rhel8beta1 ~]# <\/code><\/p>\n

But…
\n[root@rhel8beta1 ~]# which postgres<\/span>
\n\/usr\/bin\/postgres
\n[root@rhel8beta1 ~]# \/usr\/bin\/postgres --version<\/span>
\npostgres (PostgreSQL) 9.6.10<\/strong>
\n[root@rhel8beta1 ~]#<\/code>
\n…still using 9.6 \ud83d\ude41
\nAfter switching from one module to another, we must upgrade the corresponding packages :
\n[root@rhel8beta1 ~]# yum distro-sync<\/span>
\nUpdating Subscription Management repositories.
\nUpdating Subscription Management repositories.
\nLast metadata expiration check: 0:18:40 ago on Thu Dec 13 08:34:05 2018.
\nDependencies resolved.
\n=========================================================\u00a7=====================================================================================
\n Package Arch Version Repository Size
\n==============================================================================================================================================
\nUpgrading:
\n postgresql x86_64 10.5-1.el8+1546+27ad5f8e rhel-8-for-x86_64-appstream-beta-rpms 1.5 M
\n postgresql-server x86_64 10.5-1.el8+1546+27ad5f8e rhel-8-for-x86_64-appstream-beta-rpms 5.1 M
\n<\/br>
\nTransaction Summary
\n==============================================================================================================================================
\nUpgrade 2 Packages
\n<\/br>
\nTotal download size: 6.5 M
\nIs this ok [y\/N]: y
\nDownloading Packages:
\n(1\/2): postgresql-server-10.5-1.el8+1546+27ad5f8e.x86_64.rpm 1.3 MB\/s | 5.1 MB 00:03
\n(2\/2): postgresql-10.5-1.el8+1546+27ad5f8e.x86_64.rpm 371 kB\/s | 1.5 MB 00:04
\n--------------------------------------------------------------------------------------------------------------- --------------------------------
\nTotal 1.6 MB\/s | 6.5 MB 00:04
\nRunning transaction check
\nTransaction check succeeded.
\nRunning transaction test
\nTransaction test succeeded.
\nRunning transaction
\n Preparing : 1\/1
\n Running scriptlet: postgresql-10.5-1.el8+1546+27ad5f8e.x86_64 1\/1
\nUpgrade: postgresql-10.5-1.el8+1546+27ad5f8e.x86_64
\n Upgrading : postgresql-10.5-1.el8+1546+27ad5f8e.x86_64 1\/4
\nUpgrade: postgresql-10.5-1.el8+1546+27ad5f8e.x86_64
\nUpgrade: postgresql-server-10.5-1.el8+1546+27ad5f8e.x86_64
\n Running scriptlet: postgresql-server-10.5-1.el8+1546+27ad5f8e.x86_64 2\/4
\n Upgrading : postgresql-server-10.5-1.el8+1546+27ad5f8e.x86_64 2\/4
\n Running scriptlet: postgresql-server-10.5-1.el8+1546+27ad5f8e.x86_64 2\/4
\nUpgrade: postgresql-server-10.5-1.el8+1546+27ad5f8e.x86_64
\nUpgraded: postgresql-server-9.6.10-1.el8+1547+210b7007.x86_64
\n Running scriptlet: postgresql-server-9.6.10-1.el8+1547+210b7007.x86_64 3\/4
\n Cleanup : postgresql-server-9.6.10-1.el8+1547+210b7007.x86_64 3\/4
\nUpgraded: postgresql-server-9.6.10-1.el8+1547+210b7007.x86_64
\n Running scriptlet: postgresql-server-9.6.10-1.el8+1547+210b7007.x86_64 3\/4
\nUpgraded: postgresql-9.6.10-1.el8+1547+210b7007.x86_64
\n Cleanup : postgresql-9.6.10-1.el8+1547+210b7007.x86_64 4\/4
\nUpgraded: postgresql-9.6.10-1.el8+1547+210b7007.x86_64
\n Running scriptlet: postgresql-9.6.10-1.el8+1547+210b7007.x86_64 4\/4
\n Verifying : postgresql-10.5-1.el8+1546+27ad5f8e.x86_64 1\/4
\n Verifying : postgresql-9.6.10-1.el8+1547+210b7007.x86_64 2\/4
\n Verifying : postgresql-server-10.5-1.el8+1546+27ad5f8e.x86_64 3\/4
\n Verifying : postgresql-server-9.6.10-1.el8+1547+210b7007.x86_64 4\/4
\n<\/br>
\nUpgraded:
\n postgresql-10.5-1.el8+1546+27ad5f8e.x86_64 postgresql-server-10.5-1.el8+1546+27ad5f8e.x86_64
\n<\/br>
\nComplete!
\n[root@rhel8beta1 ~]#<\/code><\/p>\n

And now it’s fine :
\n[root@rhel8beta1 ~]# which postgres<\/span>
\n\/usr\/bin\/postgres
\n[root@rhel8beta1 ~]# \/usr\/bin\/postgres --version<\/span>
\npostgres (PostgreSQL) 10.5<\/strong>
\n[root@rhel8beta1 ~]# <\/code><\/p>\n

So what ?<\/h3>\n

That was only a first quick try with the AppStream fonctionality. What we can remember here is that with this new way to manage packages we can benefit from parallel availability of multiple versions of software. This is due to the disassociation from the kernel space (BaseOS) – which is still managed in a traditional way, and the user space (AppStream) – which is now deployed in the form of “containerized” applications.
\nUp to now, when we wanted to upgrade an application to a given version, we had to think about the inter-dependency between this application and the other one that we didn’t want to update. With RHEL8, we can now upgrade one while keeping the other in its current version.<\/p>\n","protected":false},"excerpt":{"rendered":"

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