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centOS7.6安装完docker后在docker-compose.yml文件所在目录执行：docker-compose up -d, 报告错误： ERROR: Couldn't connect to Docker daemon at http+docker://localhost - is it running? If it's at a non-standard location, specify the URL with the DOCKER_HOST environment variable.

报这个错误一般是因为没有安装docker-compose 获取docker-compose curl -L "https://github.com/docker/compose/releases/download/1.25.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose 给docker-compose添加执行权限 chmod +x /usr/local/bin/docker-compose 查看docker