uos系统下docker 安装

1. 首先查看自己的uos系统是基于debian还是centos

cat /etc/os-release
PRETTY_NAME="UOS Server 20"
NAME="UOS Server 20"
VERSION_ID="20"
VERSION="20"
ID=uos
HOME_URL="https://www.chinauos.com/"
BUG_REPORT_URL="https://bbs.chinauos.com/"
VERSION_CODENAME=fuyu
PLATFORM_ID="platform:uel20"

[root@aicloud249 ragflow]# which yum || which dnf || which rpm
/usr/bin/yum

 which dnf
/usr/bin/dnf

新的机器需要开网并配置一下dns

# cat /etc/resolv.conf 
# Generated by NetworkManager
search openstacklocal novalocal
nameserver 172.28.1.22
nameserver 172.28.1.20
[root@ccc-1773736199581 ~]# vi /etc/resolv.conf 

说明是基于centos的，参考docker 官方手册里面的安装文档即可：
https://docs.docker.com/engine/install/centos/

sudo dnf install -y docker

启动并设置开机自启

 sudo systemctl start docker
[root@ccc-1773036790639 ~]# sudo systemctl enable docker
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /usr/lib/systemd/system/docker.service.

查看docker状态：

sudo systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: active (running) since Mon 2026-03-09 15:05:30 CST; 4min 53s left
     Docs: https://docs.docker.com
 Main PID: 3082 (dockerd)
    Tasks: 29
   Memory: 51.2M
   CGroup: /system.slice/docker.service
           ├─3082 /usr/bin/dockerd -H fd:// --log-driver=journald --live-restore --default-ulimit nofile=1024:1024
           └─3094 containerd --config /var/run/docker/containerd/containerd.toml

Mar 09 15:05:27 xiaoyu-1773036790639.novalocal dockerd[3094]: time="2026-03-09T15:05:27.945611650+08:00" level=info msg="subscribe ctx=context.Background.WithValue(type transport.connectionKey, val <not Str>
Mar 09 15:05:28 xiaoyu-1773036790639.novalocal dockerd[3082]: time="2026-03-09T15:05:28.438818241+08:00" level=info msg="Loading containers: start."
Mar 09 15:05:28 xiaoyu-1773036790639.novalocal dockerd[3094]: time="2026-03-09T15:05:28.440002702+08:00" level=info msg="subscribe ctx=context.Background.WithValue(type transport.connectionKey, val <not Str>
Mar 09 15:05:29 xiaoyu-1773036790639.novalocal dockerd[3082]: time="2026-03-09T15:05:29.143206732+08:00" level=info msg="Firewalld: interface docker0 already part of docker zone, returning"
Mar 09 15:05:29 xiaoyu-1773036790639.novalocal dockerd[3082]: time="2026-03-09T15:05:29.353039964+08:00" level=info msg="Loading containers: done."
Mar 09 15:05:29 xiaoyu-1773036790639.novalocal dockerd[3082]: time="2026-03-09T15:05:29.628550401+08:00" level=warning msg="Not using native diff for overlay2, this may cause degraded performance for buildi>
Mar 09 15:05:29 xiaoyu-1773036790639.novalocal dockerd[3082]: time="2026-03-09T15:05:29.628792915+08:00" level=info msg="Docker daemon" commit=061aa95809 containerd-snapshotter=false storage-driver=overlay2>
Mar 09 15:05:29 xiaoyu-1773036790639.novalocal dockerd[3082]: time="2026-03-09T15:05:29.628890719+08:00" level=info msg="Daemon has completed initialization"
Mar 09 15:05:30 xiaoyu-1773036790639.novalocal dockerd[3082]: time="2026-03-09T15:05:30.143444956+08:00" level=info msg="API listen on /run/docker.sock"
Mar 09 15:05:30 xiaoyu-1773036790639.novalocal systemd[1]: Started Docker Application Container Engine.

2. 安装过程会报错，记得改源
   切换到华为云镜像源，这是目前国内最稳定的 Docker CE RPM 镜像

# 1. 换源
sudo rm -f /etc/yum.repos.d/docker-ce.repo
sudo tee /etc/yum.repos.d/docker-ce.repo <<-'EOF'
[docker-ce-stable]
name=Docker CE Stable - $basearch
baseurl=https://mirrors.huaweicloud.com/docker-ce/linux/centos/8/$basearch/stable
enabled=1
gpgcheck=1
gpgkey=https://mirrors.huaweicloud.com/docker-ce/linux/centos/gpg
EOF

# 2. 清缓存
sudo dnf clean all

# 3. 安装
sudo dnf install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

# 4. 启动
sudo systemctl enable --now docker

3. 如果拉不下来镜像，配置如下操作

sudo tee /etc/docker/daemon.json > /dev/null <<EOF
{
  "insecure-registries": ["172.28.0.32:3443"]
}
EOF

sudo systemctl daemon-reload
sudo systemctl restart docker
sudo systemctl status docker.service

4.装git

sudo dnf install git -y

5.遇到docker-ce和docker冲突的话

# 1. 先卸载系统自带全套容器组件（必执行，规避冲突）
sudo dnf remove -y docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-engine containerd runc podman podman-docker
sudo dnf autoremove -y
# 2. 再安装官方docker-ce，无需加--allowerasing
sudo dnf install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
# 3. 启动自启
sudo systemctl enable --now docker