[Centos8] Installation of docker fails

[papanito]

Installation of docker-ce fails with on CentOS 8

fatal: [node002]: FAILED! => {"changed": false, "failures": [], "msg": "Depsolve Error occured: \n Problem: package docker-ce-3:19.03.4-3.el7.x86_64 requires containerd.io >= 1.2.2-3, but none of the providers can be installed\n  - cannot install the best candidate for the job\n  - package containerd.io-1.2.10-3.2.el7.x86_64 is excluded\n  - package containerd.io-1.2.2-3.3.el7.x86_64 is excluded\n  - package containerd.io-1.2.2-3.el7.x86_64 is excluded\n  - package containerd.io-1.2.4-3.1.el7.x86_64 is excluded\n  - package containerd.io-1.2.5-3.1.el7.x86_64 is excluded\n  - package containerd.io-1.2.6-3.3.el7.x86_64 is excluded", "rc": 1, "results": []}

---
- name: Setup docker
  hosts: all

  vars:
    pip_install_packages:
      - name: docker

  roles:
    - geerlingguy.docker

ansible 2.9.0
  config file = /home/aedu/ansible.cfg
  configured module search path = ['/home/aedu/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/lib/python3.7/site-packages/ansible
  executable location = /usr/bin/ansible
  python version = 3.7.4 (default, Oct  4 2019, 06:57:26) [GCC 9.2.0]

# uname -a
Linux node002 4.18.0-80.11.2.el8_0.x86_64 #1 SMP Tue Sep 24 11:32:19 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
# cat /etc/os-release 
NAME="CentOS Linux"
VERSION="8 (Core)"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="8"
PLATFORM_ID="platform:el8"
PRETTY_NAME="CentOS Linux 8 (Core)"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:8"
HOME_URL="https://www.centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"

CENTOS_MANTISBT_PROJECT="CentOS-8"
CENTOS_MANTISBT_PROJECT_VERSION="8"
REDHAT_SUPPORT_PRODUCT="centos"
REDHAT_SUPPORT_PRODUCT_VERSION="8"

[papanito]

I understand this is a CentOS issue and manually you can install the package with dnf install --nobest docker-ce. Can this be achieved with this role?

[hoxu]

@papanito did you find any workaround for this?

[hoxu]

The issue is that docker-ce has not been packaged for CentOS 8 yet.

An ugly workaround is to install containerd.io manually beforehand:

pre_tasks:
  - yum:
     name: https://download.docker.com/linux/centos/7/x86_64/stable/Packages/containerd.io-1.2.6-3.3.el7.x86_64.rpm

[geerlingguy]

A little more detail (for google-ability); the actual error you get if you try this role on CentOS 8 is:

TASK [geerlingguy.docker : Install Docker.] ************************************
524    fatal: [instance]: FAILED! => {"changed": false, "failures": [], "msg": "Depsolve Error occured: 
 Problem: package docker-ce-3:19.03.5-3.el7.x86_64 requires containerd.io >= 1.2.2-3, but none of the providers can be installed
  - cannot install the best candidate for the job
  - package containerd.io-1.2.10-3.2.el7.x86_64 is excluded
  - package containerd.io-1.2.2-3.3.el7.x86_64 is excluded
  - package containerd.io-1.2.2-3.el7.x86_64 is excluded
  - package containerd.io-1.2.4-3.1.el7.x86_64 is excluded
  - package containerd.io-1.2.5-3.1.el7.x86_64 is excluded
  - package containerd.io-1.2.6-3.3.el7.x86_64 is excluded", "rc": 1, "results": []}

[geerlingguy]

I just pushed up a commit that makes this work on CentOS 8 / RHEL 8 using the workaround @hoxu found. Hopefully this won't be needed at some point in the future!

[GuangweiWen]

Thank you, workaround provided by @hoxu works on my CentOS 8