Tag Archives: containers

IBM red hat 7 & 8 ubi container images and repos

IBM Red Hat 7 UBI container images (public)

  • registry.access.redhat.com/ubi7
  • registry.access.redhat.com/ubi7/ubi
  • registry.access.redhat.com/ubi7/ubi-minimal

IBM Red Hat 7 UBI container images (subscription reqd)

  • registry.redhat.io/ubi7
  • registry.redhat.io/ubi7/ubi
  • registry.redhat.io/ubi7/ubi-minimal

IBM Red Hat 7 UBI os and optional repos

IBM Red Hat 8 UBI container images (public)

  • registry.access.redhat.com/ubi8
  • registry.access.redhat.com/ubi8/ubi
  • registry.access.redhat.com/ubi8/ubi-minimal

IBM Red Hat 8 UBI container images (subscription required)

  • registry.redhat.io/ubi8
  • registry.redhat.io/ubi8/ubi
  • registry.redhat.io/ubi8/ubi-minimal

IBM Red Hat 8 UBI BaseOS & AppStream repos

see also

redhat developers only

 

ibmredhat 8 & @OpenShift #container management #devops

ibmredhat 8 & @OpenShift #container management #devops

ibmredhat have removed the Docker container engine, along with the docker command, from Red Hat Enterprise Linux 8 entirely. For RHEL 8, Docker is not included and not supported by Red Hat (although it is still available from other sources)

  • Xhttps://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/pdf/building_running_and_managing_containers/Red_Hat_Enterprise_Linux-8-Building_running_and_managing_containers-en-US.pdfX

with ibmredhat the focus is not on running individual containers from the command line. The primary venue for running containers is a Kubernetes-based platform, such as OpenShift.

By repositioning OpenShift as the project for running containers, container engines like Docker become just another component of OpenShift with no direct access by end users.

Because the container engine in OpenShift is not meant to be used directly, it can be
implemented with a limited feature set that focuses on doing everything that OpenShift needs, without having to implement lots of standalone features

Tools like podman, skopeo, and buildah were developed to take over those docker command features.

the newworld tools are

ibmredhat universal base image (UBI) containers

to build a container run buildah

$ buildah bud -t mycontainer

Dockerfile
FROM registry.access.redhat.com/ubi8/ubi
ADD myecho /usr/local/bin
ENTRYPOINT "/usr/local/bin/myecho"
CMD "/usr/local/bin/myecho"

myecho
echo "This container works!"

to manage, run, stop, start a container use podman

$ podman run -i -t -p 8080:80 --name=pho photon /bin/bash
$ podman inspect --format='{{.Path}}' pho
$ podman logs pho
$ podman stop pho
$ podman start -i -a pho

to copy containers use skopeo

$ skopeo

 

IBM Red Hat GNU/Linux 8 Podman & Containers

IBM Red Hat 8 building, running & managing containers with podman & buildah

See also

admin-magazine managing #containers with #podman #devops

admin-magazine managing #containers with #podman #devops

ubuntu / xubuntu podman install

ubuntu / xubuntu podman install

# aptitude install curl
# $(. /etc/os-release) \
echo "deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/testing/xUbuntu_"${VERSION_ID}"/ /" \
> /etc/apt/sources.list.d/devel:kubic:libcontainers:testing.list
# curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/testing/xUbuntu_${VERSION_ID}/Release.key | sudo apt-key add -
# aptitude install podman

one nice feature of the ubuntu / xubuntu podman installer is that it sets up /etc/subuid and /etc/subgid for existing users automatically

run

$ podman pull clearlinux
$ podman images
$ podman run -i -t clearlinux /bin/bash
$ podman ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
37aff5184940 docker.io/library/clearlinux:latest /bin/bash 8 minutes ago Exited (0) 4 minutes ago romantic_perlman

see

red hat 7.7+ and podman rootless containers

red hat 7.7+ and podman rootless containers

config

# echo "user.max_user_namespaces=10000" > /etc/sysctl.d/userns.conf
# sysctl -p /etc/sysctl.d/userns.conf

run

$ podman run alpine cat /etc/os-release

$ podman run photon ps
$ podman run -i -t photon /bin/bash

$ podman run ubuntu ps
$ podman run -i -t ubuntu /bin/bash

images and containers are stored in $USER/.local instead of /var/lib/containers

the containers have no root privileges to the operating system on the host

/home/$USER/.local/share/containers
/home/$USER/.local/share/containers/storage

$ ls -l /home/$USER/.local/share/containers/storage/
total 20
drwx------.  2 ddarra ddarra   27 Apr  4 23:03 libpod
drwx------.  2 ddarra ddarra    6 Apr  4 23:03 mounts
drwx------. 17 ddarra ddarra 4096 Apr  4 23:18 overlay
drwx------.  9 ddarra ddarra 4096 Apr  4 23:18 overlay-containers
drwx------.  6 ddarra ddarra 4096 Apr  4 23:18 overlay-images
drwx------.  2 ddarra ddarra 4096 Apr  4 23:18 overlay-layers
-rw-------.  1 ddarra ddarra   64 Apr  4 23:19 storage.lock
drwx------.  2 ddarra ddarra    6 Apr  4 23:03 tmp


 

centos , @oraclelinux & ibm red hat #containers #devops

centos , @oraclelinux & ibm red hat #containers #devops

Red Hat Quay is an enterprise-quality container registry. Use Quay to build and store containers, then deploy them to the servers across your enterprise.

DOCKER is DEAD ! long live PODMAN ! #devops

Red Hat have removed the Docker container engine, along with the docker command, from Red Hat Enterprise Linux 8 entirely. For RHEL 8, Docker is not included and not supported by Red Hat !