1、錯誤描述

root@ubuntu-database:/opt/dify/docker# docker compose up -d
[+] Running 9/9? api Error        context canceled                                                                                                                                                                            15.1s ? db Error         context canceled                                                                                                                                                                            15.1s ? nginx Error      context canceled                                                                                                                                                                            15.1s ? redis Error      Get "https://registry-1.docker.io/v2/": context deadline exceeded (Client.Timeout exceeded while awaiting headers)                                                                          15.1s ? ssrf_proxy Error context canceled                                                                                                                                                                            15.1s ? worker Error     context canceled                                                                                                                                                                            15.1s ? weaviate Error   context canceled                                                                                                                                                                            15.1s ? sandbox Error    context canceled                                                                                                                                                                            15.1s ? web Error        context canceled                                                                                                                                                                            15.1s 
Error response from daemon: Get "https://registry-1.docker.io/v2/": context deadline exceeded (Client.Timeout exceeded while awaiting headers)

????????Error response from daemon: Get "https://registry-1.docker.io/v2/": context deadline exceeded (Client.Timeout exceeded while awaiting headers)

????????這個錯誤表明Docker客戶端嘗試訪問Docker Hub或其他Docker注冊中心時出現了問題。具體來說，是在嘗試獲取注冊中心API的響應時遇到了錯誤。可能的原因包括網絡問題、認證問題、注冊中心URL不正確或者注冊中心服務本身不可用。

2、解決方法

2.1、檢查網絡連接

????????確保你的機器可以訪問互聯網，特別是Docker Hub或你所使用的私有注冊中心。????????

root@ubuntu-database:/opt/dify/docker# ping www.baidu.com
PING www.a.shifen.com (110.242.68.3) 56(84) bytes of data.
64 bytes from 110.242.68.3: icmp_seq=1 ttl=128 time=38.5 ms
64 bytes from 110.242.68.3: icmp_seq=2 ttl=128 time=36.4 ms
64 bytes from 110.242.68.3: icmp_seq=3 ttl=128 time=52.3 ms

2.2、檢查Docker服務狀態

????????運行systemctl status docker（Linux系統）查看Docker服務是否正在運行。

root@ubuntu-database:/opt/dify/docker# systemctl status docker
● docker.service - Docker Application Container EngineLoaded: loaded (/usr/lib/systemd/system/docker.service; enabled; preset: enabled)Active: active (running) since Wed 2024-11-27 12:04:05 UTC; 55min ago
TriggeredBy: ● docker.socketDocs: https://docs.docker.comMain PID: 4766 (dockerd)Tasks: 10Memory: 21.8M (peak: 24.5M)CPU: 479msCGroup: /system.slice/docker.service

如以上都沒有問題，下面考慮docker換源

2.3、換源

sudo mkdir -p /etc/docker
vim /etc/docker/daemon.json  

首先進入/etc/docker/daemon.json文件

然后在里面加入下面的配置

{"registry-mirrors" : ["https://docker.registry.cyou",
"https://docker-cf.registry.cyou",
"https://dockercf.jsdelivr.fyi",
"https://docker.jsdelivr.fyi",
"https://dockertest.jsdelivr.fyi",
"https://mirror.aliyuncs.com",
"https://dockerproxy.com",
"https://mirror.baidubce.com",
"https://docker.m.daocloud.io",
"https://docker.nju.edu.cn",
"https://docker.mirrors.sjtug.sjtu.edu.cn",
"https://docker.mirrors.ustc.edu.cn",
"https://mirror.iscas.ac.cn",
"https://docker.rainbond.cc",
"https://do.nark.eu.org",
"https://dc.j8.work",
"https://dockerproxy.com",
"https://gst6rzl9.mirror.aliyuncs.com",
"https://registry.docker-cn.com",
"http://hub-mirror.c.163.com",
"http://mirrors.ustc.edu.cn/",
"https://mirrors.tuna.tsinghua.edu.cn/",
"http://mirrors.sohu.com/" 
],"insecure-registries" : ["registry.docker-cn.com","docker.mirrors.ustc.edu.cn"],
"debug": true,
"experimental": false
}

重載生效

sudo systemctl daemon-reload

重啟服務

sudo systemctl restart docker

查看是否配置成功

docker info

root@ubuntu-database:/etc/docker# docker info
Client: Docker Engine - CommunityVersion:    27.3.1Context:    defaultDebug Mode: falsePlugins:buildx: Docker Buildx (Docker Inc.)Version:  v0.17.1Path:     /usr/libexec/docker/cli-plugins/docker-buildxcompose: Docker Compose (Docker Inc.)Version:  v2.29.7Path:     /usr/libexec/docker/cli-plugins/docker-composeServer:Containers: 0Running: 0Paused: 0Stopped: 0Images: 0Server Version: 27.3.1Storage Driver: overlay2Backing Filesystem: extfsSupports d_type: trueUsing metacopy: falseNative Overlay Diff: trueuserxattr: falseLogging Driver: json-fileCgroup Driver: systemdCgroup Version: 2Plugins:Volume: localNetwork: bridge host ipvlan macvlan null overlayLog: awslogs fluentd gcplogs gelf journald json-file local splunk syslogSwarm: inactiveRuntimes: io.containerd.runc.v2 runcDefault Runtime: runcInit Binary: docker-initcontainerd version: 57f17b0a6295a39009d861b89e3b3b87b005ca27runc version: v1.1.14-0-g2c9f560init version: de40ad0Security Options:apparmorseccompProfile: builtincgroupnsKernel Version: 6.8.0-49-genericOperating System: Ubuntu 24.04 LTSOSType: linuxArchitecture: x86_64CPUs: 4Total Memory: 7.709GiBName: ubuntu-databaseID: acb5a888-7140-4e43-8924-6fc325481944Docker Root Dir: /var/lib/dockerDebug Mode: trueFile Descriptors: 23Goroutines: 40System Time: 2024-11-27T13:09:10.861401847ZEventsListeners: 0Experimental: falseInsecure Registries:docker.mirrors.ustc.edu.cnregistry.docker-cn.com127.0.0.0/8Registry Mirrors:https://docker.registry.cyou/https://docker-cf.registry.cyou/https://dockercf.jsdelivr.fyi/https://docker.jsdelivr.fyi/https://dockertest.jsdelivr.fyi/https://mirror.aliyuncs.com/https://dockerproxy.com/https://mirror.baidubce.com/https://docker.m.daocloud.io/https://docker.nju.edu.cn/https://docker.mirrors.sjtug.sjtu.edu.cn/https://docker.mirrors.ustc.edu.cn/https://mirror.iscas.ac.cn/https://docker.rainbond.cc/https://do.nark.eu.org/https://dc.j8.work/https://gst6rzl9.mirror.aliyuncs.com/https://registry.docker-cn.com/http://hub-mirror.c.163.com/http://mirrors.ustc.edu.cn/https://mirrors.tuna.tsinghua.edu.cn/http://mirrors.sohu.com/Live Restore Enabled: falseWARNING: bridge-nf-call-iptables is disabled
WARNING: bridge-nf-call-ip6tables is disabled

重新執行 ：docker compose up -d

出現以下情況，說明問題已解決，如下圖：