Docker 설치 공식 가이드 for CentOS

• https://docs.docker.com/install/linux/docker-ce/centos/

OS 요구 사항

• To install Docker CE, you need a maintained version of CentOS 7. Archived versions aren’t supported or tested.

  The centos-extras repository must be enabled. This repository is enabled by default, but if you have disabled it, you need to re-enable it.

  The overlay2 storage driver is recommended.

  출처

  • https://docs.docker.com/storage/storagedriver/select-storage-driver/

  
  

  overlay2

  • overlay2 is the preferred storage driver, for all currently supported Linux distributions, and requires no extra configuration.

  
  

  Docker Engine - Community

  • For Docker Engine - Community, only some configurations are tested, and your operating system’s kernel may not support every storage driver. In general, the following configurations work on recent versions of the Linux distribution:

  Linux distribution	Recommended storage drivers	Alternative drivers
  Docker Engine - Community on Ubuntu	overlay2 or aufs (for Ubuntu 14.04 running on kernel 3.13)	overlay¹, devicemapper², zfs, vfs
  Docker Engine - Community on Debian	overlay2 (Debian Stretch), aufs or devicemapper(older versions)	overlay¹, vfs
  Docker Engine - Community on CentOS	overlay2	overlay¹, devicemapper², zfs, vfs
  Docker Engine - Community on Fedora	overlay2	overlay¹, devicemapper², zfs, vfs

  Supported backing filesystems

  • With regard to Docker, the backing filesystem is the filesystem where /var/lib/docker/ is located. Some storage drivers only work with specific backing filesystems.

  Storage driver	Supported backing filesystems
  overlay2, overlay	xfs with ftype=1, ext4
  aufs	xfs, ext4
  devicemapper	direct-lvm
  btrfs	btrfs
  zfs	zfs
  vfs	any filesystem

Uninstall old versions

• $ sudo yum remove docker \
                    docker-client \
                    docker-client-latest \
                    docker-common \
                    docker-latest \
                    docker-latest-logrotate \
                    docker-logrotate \
                    docker-engine