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yum update

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sudo yum remove docker 
docker-client 
docker-client-latest 
docker-common 
docker-latest 
docker-latest-logrotate 
docker-logrotate 
docker-engine

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yum install -y yum-utils 
device-mapper-persistent-data 
lvm2

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 sudo yum-config-manager 
--add-repo 
https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

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yum list docker-ce --showduplicates | sort -r

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dnf install https://mirrors.aliyun.com/docker-ce/linux/centos/8/x86_64/stable/Packages/containerd.io-1.4.4-3.1.el8.x86_64.rpm

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dnf install https://mirrors.aliyun.com/docker-ce/linux/centos/8/x86_64/stable/Packages/docker-ce-20.10.5-3.el8.x86_64.rpm

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dnf install https://mirrors.aliyun.com/docker-ce/linux/centos/8/x86_64/stable/Packages/docker-ce-cli-20.10.5-3.el8.x86_64.rpm

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systemctl start docker

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systemctl enable docker

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sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://xxxxx.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

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vi /usr/lib/systemd/system/docker.service

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ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

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ExecStart=/usr/bin/dockerd -H fd:// -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock

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systemctl daemon-reload
service docker restart

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curl http://localhost:2375/version
{"Platform":{"Name":"Docker Engine - Community"},"Components":[{"Name":"Engine","Version":"20.10.5","Details":{"ApiVersion":"1.41","Arch":"amd64","BuildTime":"2021-03-02T20:15:27.000000000+00:00","Experimental":"false","GitCommit":"363e9a8","GoVersion":"go1.13.15","KernelVersion":"4.18.0-147.5.1.el8_1.x86_64","MinAPIVersion":"1.12","Os":"linux"}},{"Name":"containerd","Version":"1.4.4","Details":{"GitCommit":"05f951a3781f4f2c1911b05e61c160e9c30eaa8e"}},{"Name":"runc","Version":"1.0.0-rc93","Details":{"GitCommit":"12644e614e25b05da6fd08a38ffa0cfe1903fdec"}},{"Name":"docker-init","Version":"0.19.0","Details":{"GitCommit":"de40ad0"}}],"Version":"20.10.5","ApiVersion":"1.41","MinAPIVersion":"1.12","GitCommit":"363e9a8","GoVersion":"go1.13.15","Os":"linux","Arch":"amd64","KernelVersion":"4.18.0-147.5.1.el8_1.x86_64","BuildTime":"2021-03-02T20:15:27.000000000+00:00"}