一、下载二进制docker包、解压、拷贝文件

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# wget https://download.docker.com/linux/static/stable/x86_64/docker-18.09.6.tgz

# tar xf docker-18.09.6.tgz

# cp docker/* /usr/bin/

# docker version

Client: Docker Engine - Community

Version:           18.09.6

API version:       1.39

Go version:        go1.10.8

Git commit:        481bc77

Built:             Sat May  4 02:33:34 2019

OS/Arch:           linux/amd64

Experimental:      false

Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

二、配置docker.service文件

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

[Unit] Description=Docker Application Container Engine Documentation=https://docs.docker.com After=network-online.target firewalld.service Wants=network-online.target [Service] Type=notify ExecStart=/usr/bin/dockerd ExecReload=/bin/kill -s HUP $MAINPID LimitNOFILE=infinity LimitNPROC=infinity TimeoutStartSec=0 Delegate=yes KillMode=process Restart=on-failure StartLimitBurst=3 StartLimitInterval=60s [Install] WantedBy=multi-user.target

# systemctl daemon-reload

# systemctl start docker

# ps -ef|grep docker

root       2466      1  0 16:47 ?        00:00:00 /usr/bin/dockerd

root       2470   2466  0 16:47 ?        00:00:00 containerd --config /var/run/docker/containerd/containerd.toml --log-level info

root       2589   2424  0 16:49 pts/1    00:00:00 docker pull centos

root       2637   2620  0 16:50 pts/0    00:00:00 grep --color=auto docker

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