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Top Forums UNIX for Advanced & Expert Users Docker is dead - cri-o the new best practice Post 303045896 by stomp on Friday 17th of April 2020 12:08:11 PM
Old 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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rhsm-debug(8)						   Certificate Information Tool 					     rhsm-debug(8)

NAME
rhsm-debug - Compiles information about system's entitlements, products, and identity used by Red Hat Subscription Manager. SYNOPSIS
rhsm-debug module [options] DESCRIPTION
rhsm-debug compiles information about system's entitlements, products, and identity used by Red Hat Subscription Manager. COMMANDS AND OPTIONS
rhsm-debug has specific options available for each module, depending on what operation is being performed. The currently supported modules are: 1. system COMMON OPTIONS -h, --help Prints the specific help information for the given command. --proxy=PROXY Uses an HTTP proxy. The PROXY name has the format hostname:port. --proxyuser=PROXYUSERNAME Gives the username to use to authenticate to the HTTP proxy. --proxypassword=PROXYPASSWORD Gives the password to use to authenticate to the HTTP proxy. SYSTEM OPTIONS The system command pulls in debug information off of the current system --destination=DESTINATION The directory to place the resulting debug data. The default is /tmp. --no-archive Generates an uncompressed directory intead of a gzipped file. --sos Excludes data files that are also collected by the sosreport tool. BUGS
This tool is part of Red Hat Subscription Manager. To file bugs against this command-line tool, go to <https://bugzilla.redhat.com>, and select Red Hat > Red Hat Enterprise Linux > subscription-manager. AUTHORS
William Poteat<wpoteat@redhat.com>. The rhsm-debug tool was written by William Poteat. COPYRIGHT
Copyright (c) 2012 Red Hat, Inc. This is licensed under the GNU General Public License, version 2 (GPLv2). A copy of this license is avail- able at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. version 1.3 May 23, 2013 rhsm-debug(8)
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