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常见错误

Docker​

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

systemctl daemon-reload
systemctl restart docker.service

使用cenots:7官方镜像时​

yun​

# 关掉fastestmirror源
# enable设置为0
vi  /etc/yum/pluginconf.d/fastestmirror.conf

# plugin设置为0
vi /etc/yum.conf
# 指定未国内的阿里云源
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo

# 清除旧缓存
yum clean all
yum makecache

yum -y update