Kubespray: Avoid using both flags and /etc/docker/daemon.json

[mattymo]

Is this a BUG REPORT or FEATURE REQUEST? (choose one):
Bug Report

Environment:

• *Cloud provider or hardware configuration: * CentOS 7 bare metal

docker[7988]: unable to configure the Docker daemon with file /etc/docker/daemon.json: the following directives are specified both as a flag and in the

[ikus060]

Got the same issue on debian bare metal.

It seams my previous installation of docker is conflucting with installation of kubespray. I delete the file /etc/docker/daemon.json to fix the issue.

[slpcat]

/etc/systemd/system/docker.service.d/* should use least options as possible,and other configurations should be used in /etc/docker/daemon.json ,such as insecure-registries, storage-driver,storage-opts,live-restore,oom-score-adjust,debug ...

[geldenhu]

Hello,
Fresh CentOS 7.4 install.
Just installed docker with "yum install docker" (got 2:1.13.1-53.git774336d.el7.centos).

File "/usr/lib/systemd/system/docker.service" contains:
EnvironmentFile=-/etc/sysconfig/docker-storage
called line 25:
$DOCKER_STORAGE_OPTIONS \
which contains:
DOCKER_STORAGE_OPTIONS="--storage-driver overlay2 "

Removed content of file /etc/sysconfig/docker-storage and could start docker without problem using devmapper as specified in /etc/docker/daemon.json

[hswong3i]

WIP for fixing this with #4286

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[k8s-ci-robot]

@fejta-bot: Closing this issue.

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