04-17-2020
Docker is dead - cri-o the new best practice
Since some time now docker is being on the fall and is being abandoned as provider for container technology.
Red Hat already threw docker out of its Red Hat Enterprise Linux (all Versions 6,7 and 8) last year. The Cloud Native Computing Foundation replaced docker as recommended container technology with CRI-O (Container Runtime Interface) as best practice.
Furthermore the acquisition of Docker Enterprises(=Docker Swarm Product) part of Docker Inc. by Mirantis is a clear sign of its current declining meaning for its future in the area of containers.
Red Hats way is to foster CRI-O (the runtime system) and podman (the management cli tools). CRI-O is better in ways of using less system resources. Also CRI-O does not use an additional daemon as docker does.
For migration simplicity podman is designed to have the commands very similar/identical to the corresponding docker commands. As I understood, the CRI-O maintains compatibility to dockerfiles and images, so a migration will be easy.
Nice to look at: The Cloud Native Computing Foundation Interactive Landscape
CNCF Cloud Native Interactive Landscape
Last edited by stomp; 04-20-2020 at 05:48 AM..
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LEARN ABOUT CENTOS
subscription-manager-gui
subscription-manager-gui(8) Subscription Manager subscription-manager-gui(8)
NAME
subscription-manager-gui - Launches the UI client of the Subscription Manager.
SYNOPSIS
subscription-manager-gui [--register]
DESCRIPTION
subscription-manager-gui opens the local client tool to manage subscriptions and installed products on Red Hat Enterprise Linux systems.
The same tasks that can be performed by invoking subscription-manager can be performed in the GUI, including registering systems with a
subscription management service, applying and removing subscriptions, and viewing the subscription status of installed products.
The Subscription Manager UI can also be opened by selecting the Red Hat Subscription Manager item from the Applications > System Tools menu
in RHEL 5.x or the System > Administration menu in RHEL 6.x.
OPTIONS
--register
If a system has not yet been registered, then the GUI registration page can be opened immediately, as the Subscription Manager GUI
comes up. This is only relevant for unregistered systems; if this is used after a system is registered, the option is ignored.
REFERENCES
For procedures and tasks that can be performed in the Subscription Manager UI, check the Gnome help files (by pressing <F1>) or refer to
the RHEL Subscription Management Guide at <https://access.redhat.com/knowledge/docs/en-US/Red_Hat_Subscription_Management/1.0/html/Sub-
scription_Management_Guide/index.html>.
ASSOCIATED FILES
* /usr/sbin/subscription-manager-gui
* /usr/sbin/subscription-manager
* /etc/rhsm/rhsm.conf
BUGS
This client is part of Red Hat Subscription Manager. To file bugs against this client, go to https://bugzilla.redhat.com, and select Red
Hat > Red Hat Enterprise Linux > subscription-manager.
AUTHORS
Deon Lackey, <dlackey@redhat.com>.
COPYRIGHT
Copyright (c) 2010-2012 Red Hat, Inc. This is licensed under the GNU General Public License, version 2 (GPLv2). A copy of this license is
available at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
version 1.2 December 18, 2012 subscription-manager-gui(8)