配置阿里云docker-ce

# 安装docker依赖
yum install -y yum-utils device-mapper-persistent-data lvm2

# 安装docker-ce源
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

# 查找安装docker-ce版本
yum list docker-ce --showduplicates | sort -r

# 安装指定版本docker-ce，首先要卸载Centos 8安装的podman等
yum erase podman buildah
yum install docker-ce-20.10.9-3.el8 -y

# 配置docker
cat  > /etc/docker/daemon.json<<EOF
{
  "exec-opts": ["native.cgroupdriver=systemd"]
},
"log-driver": "json-file",
"log-opts": {
  "max-size": "100m",
  "max-file": "5"
},
"storage-driver": "overlay2",
"storage-opts": [
  "overlay2.override_kernel_check=true"
],
"registry-mirrors": [
  "https://xxxxx.mirror.aliyuncs.com"
]
EOF

配置阿里云镜像加速器，启动时增加：

–registry-mirror=https://xxxxxxx.mirror.aliyuncs.com

cat /usr/lib/systemd/system/docker.service
[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service containerd.service
Wants=network-online.target
Requires=docker.socket containerd.service

[Service]
Type=notify
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock\
 --registry-mirror=https://xxxxxxx.mirror.aliyuncs.com
ExecReload=/bin/kill -s HUP $MAINPID
TimeoutSec=0
RestartSec=2
Restart=always

# Note that StartLimit* options were moved from "Service" to "Unit" in systemd 229.
# Both the old, and new location are accepted by systemd 229 and up, so using the old location
# to make them work for either version of systemd.
StartLimitBurst=3

# Note that StartLimitInterval was renamed to StartLimitIntervalSec in systemd 230.
# Both the old, and new name are accepted by systemd 230 and up, so using the old name to make
# this option work for either version of systemd.
StartLimitInterval=60s

# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity

# Comment TasksMax if your systemd version does not support it.
# Only systemd 226 and above support this option.
TasksMax=infinity

# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes

# kill only the docker process, not all processes in the cgroup
KillMode=process
OOMScoreAdjust=-500

[Install]
WantedBy=multi-user.target

重启并验证

Registry Mirrors:
https://xxxxx.mirror.aliyuncs.com/
Live Restore Enabled: false

systemctl daemon-reload
systemctl restart docker

# docker info
Client: Docker Engine - Community
 Version:    24.0.4
 Context:    default
 Debug Mode: false
 Plugins:
  buildx: Docker Buildx (Docker Inc.)
    Version:  v0.11.1
    Path:     /usr/libexec/docker/cli-plugins/docker-buildx
  compose: Docker Compose (Docker Inc.)
    Version:  v2.19.1
    Path:     /usr/libexec/docker/cli-plugins/docker-compose

Server:
 Containers: 0
  Running: 0
  Paused: 0
  Stopped: 0
 Images: 0
 Server Version: 20.10.9
 Storage Driver: overlay2
  Backing Filesystem: xfs
  Supports d_type: true
  Native Overlay Diff: true
  userxattr: false
 Logging Driver: json-file
 Cgroup Driver: systemd
 Cgroup Version: 1
 Plugins:
  Volume: local
  Network: bridge host ipvlan macvlan null overlay
  Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
 Swarm: inactive
 Runtimes: io.containerd.runtime.v1.linux runc io.containerd.runc.v2
 Default Runtime: runc
 Init Binary: docker-init
 containerd version: 3dce8eb055cbb6872793272b4f20ed16117344f8
 runc version: v1.1.7-0-g860f061
 init version: de40ad0
 Security Options:
  seccomp
   Profile: default
 Kernel Version: 4.18.0-348.el8.x86_64
 Operating System: CentOS Linux 8
 OSType: linux
 Architecture: x86_64
 CPUs: 8
 Total Memory: 15.44GiB
 Name: idevops.com
 ID: XNPJ:EFPQ:5XK2:OFC6:BC3N:7XEN:YX7L:GVAD:4CFV:MUBX:XPYZ:2BQK
 Docker Root Dir: /var/lib/docker
 Debug Mode: false
 Experimental: false
 Insecure Registries:
  127.0.0.0/8
 Registry Mirrors:
  https://xxxxx.mirror.aliyuncs.com/
 Live Restore Enabled: false