https://www.cloudlinux.com/

    AlmaLinux-8.3-x86_64
    https://almalinux.org
    https://github.com/AlmaLinux

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    更新 阿里镜像源
    https://developer.aliyun.com/mirror/almalinux?spm=a2c6h.13651102.0.0.6eb61b11B4Rmj7

    1.   sed -e 's|^mirrorlist=|#mirrorlist=|g' \
    2.       -e 's|^# baseurl=https://repo.almalinux.org|baseurl=https://mirrors.aliyun.com|g' \
    3.       -i.bak \
    4.       /etc/yum.repos.d/almalinux*.repo
    1. dnf makecache

    安装docker
    yum remove buildah podman -y
    yum install -y yum-utils
    yum-config-manager —add-repo https://download.docker.com/linux/centos/docker-ce.repo
    yum install docker-ce docker-ce-cli containerd.io -y
    systemctl enable —now docker.service

    1. [root@riyimei ~]# systemctl enable --now docker.service
    2. Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /usr/lib/systemd/system/docker.service.
    3. [root@riyimei ~]#
    4. [root@riyimei ~]# systemctl status docker.service
    5. ● docker.service - Docker Application Container Engine
    6.    Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
    7.    Active: active (running) since Mon 2021-04-12 10:42:33 EDT; 5s ago
    8.      Docs: https://docs.docker.com
    9.  Main PID: 12536 (dockerd)
    10.     Tasks: 12
    11.    Memory: 47.5M
    12.    CGroup: /system.slice/docker.service
    13.            └─12536 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
    15. 4月 12 10:42:32 riyimei dockerd[12536]: time="2021-04-12T10:42:32.519672082-04:00" level=warning msg="Your kernel does not support cgroup blkio >
    16. 4月 12 10:42:32 riyimei dockerd[12536]: time="2021-04-12T10:42:32.519710478-04:00" level=warning msg="Your kernel does not support cgroup blkio >
    17. 4月 12 10:42:32 riyimei dockerd[12536]: time="2021-04-12T10:42:32.519859211-04:00" level=info msg="Loading containers: start."
    18. 4月 12 10:42:33 riyimei dockerd[12536]: time="2021-04-12T10:42:33.216756856-04:00" level=info msg="Default bridge (docker0) is assigned with an >
    19. 4月 12 10:42:33 riyimei dockerd[12536]: time="2021-04-12T10:42:33.306114871-04:00" level=info msg="Firewalld: interface docker0 already part of >
    20. 4月 12 10:42:33 riyimei dockerd[12536]: time="2021-04-12T10:42:33.403585324-04:00" level=info msg="Loading containers: done."
    21. 4月 12 10:42:33 riyimei dockerd[12536]: time="2021-04-12T10:42:33.419127078-04:00" level=info msg="Docker daemon" commit=8728dd2 graphdriver(s)=>
    22. 4月 12 10:42:33 riyimei dockerd[12536]: time="2021-04-12T10:42:33.419252704-04:00" level=info msg="Daemon has completed initialization"
    23. 4月 12 10:42:33 riyimei systemd[1]: Started Docker Application Container Engine.
    24. 4月 12 10:42:33 riyimei dockerd[12536]: time="2021-04-12T10:42:33.434381144-04:00" level=info msg="API listen on /var/run/docker.sock"