首先是要删除旧版本的docker,使用以下命令:
$ sudo yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-selinux \
docker-engine-selinux \
docker-engine
然后详细的安装Docker CE的步骤:
1.安装使用的仓库:
设置仓库:
$ sudo yum install -y yum-utils \
device-mapper-persistent-data \
lvm2
$ sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
2.开始安装DOCKER CE:
$ sudo yum install docker-ce
3.启动docker:
$ sudo systemctl start docker
4.检验是否安装成功:
$ sudo docker run hello-world
如果出现下图的信息,说明安装成功:
安装最新的docker compose:
首先下载最新版本的docker compose:
sudo curl -L https://github.com/docker/compose/releases/download/1.22.0/docker-compose-$(uname -s)-$(uname -m) -o /usr/local/bin/docker-compose
授权:
sudo chmod +x /usr/local/bin/docker-compose
查看版本:
$ docker-compose --version
问题集:
如果出现ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running?
说明需要启动docker,在centos7下可以执行命令:systemctl start docker。