Linux下Docker的安装
Linux下Docker的安装
系统版本
查看当前系统版本: cat /etc/redhat-release
CentOS Linux release 7.5.1804 (Core) 系统要求
Docker CE支持64位版本 Centos 7，并且要求内核版本不低于3.10。
卸载旧版本的Docker
sudo yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-lates-logrotate \
docker-logrotate \
docker-selinux \
docker-engine-selinux \
docker-engine卸载完成之后接下来使用 yum 来安装：
sudo yum install -y yum-utils \
device-mapper-persistent-data \
lvm2添加yum 软件源:
sudo yum-config-manager --add-repo https://mirrors.ustc.edu.cn/docker-ce/linux/centos/docker-ce.repo安装Docker CE
更新yum软件源缓存，并安装:
sudo yum makecache fast
sudo yum install docker-ce使用脚本自动安装:
curl -fsSl get.docker.com -o get-docker.sh
sudo sh get-docker.sh --mirror Aliyun执行完成这个脚本之后，docker ce 一切就准备就绪了，并且把 docker ce 的 edge 版本安装在系统中。
安装完成之后，启动 Docker:
sudo systemctl enable docker
sudo systemctl start docker建立 Docker 用户组:
sudo groupadd docker # docker是创建的docker组建立完成之后，将当前登录用户添加到 docker 组中:
sudo usermod -aG docker $USER已添加完成之后，退出当前终端并关闭，重新打开一个终端，测试Docker是否安装成功:
docker run hello-world
# 成功
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
1b930d010525: Pull complete
Digest: sha256:0e11c388b664df8a27a901dce21eb89f11d8292f7fca1b3e3c4321bf7897bffe
Status: Downloaded newer image for hello-world:latest
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/添加内核参数，如果使用Docker的过程中出现如下信息:
WARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled请添加内核配置参数以启用这些功能:
sudo tee -a /etc/sysctl.conf <<-EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF然后重新加载:
sudo sysctl -p加载成功之后显示:
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1本文参与 腾讯云自媒体分享计划，分享自作者个人站点/博客。
原始发表：2019-05-30 ，如有侵权请联系 cloudcommunity@tencent.com 删除
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