What to do if the docker service fails to start

Cause analysis:

SELinux in the Linux kernel does not support overlay2 graph driver.

Solution:

You can disable selinux in docker and set the parameter –selinux-enabled=false

The specific method is as follows:

1. Edit/ etc/sysconfig/docker

vi /etc/sysconfig/docker

2. Make the following modifications

OPTIONS='--selinux-enabled --log-driver=journald --signature-verification=false'

to

OPTIONS='--selinux-enabled=false --log-driver=journald --signature-verification=false'

and save.

3. Start the docker service again

systemctl start docker.service

Recommended tutorial: docker tutorial

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