Docker：如果注册表不安全，则Pull失败

如何解决Docker：如果注册表不安全，则Pull失败

我正在使用以下具有docker版本（服务器版本：18.09.1-ol）的操作系统，

LSB Version:    :core-4.1-amd64:core-4.1-noarch
Distributor ID: OracleServer
Description:    Oracle Linux Server release 7.8
Release:        7.8
Codename:       n/a

下面是docker info的输出。

Containers: 0
 Running: 0
 Paused: 0
 Stopped: 0
Images: 2
Server Version: 18.09.1-ol
Storage Driver: overlay2
 Backing Filesystem: xfs
 Supports d_type: true
 Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
 Log: awslogs fluentd gcplogs gelf journald json-file local logentries splunk syslog
Swarm: active
 NodeID: oqdwha5vq4okonfobaloxl48x
 Is Manager: true
 ClusterID: ugoobyidk9zrd6mzb37gsp81q
 Managers: 1
 Nodes: 1
 Default Address Pool: 10.0.0.0/8
 SubnetSize: 24
 Orchestration:
  Task History Retention Limit: 5
 Raft:
  Snapshot Interval: 10000
  Number of Old Snapshots to Retain: 0
  Heartbeat Tick: 1
  Election Tick: 10
 Dispatcher:
  Heartbeat Period: 5 seconds
 CA Configuration:
  Expiry Duration: 3 months
  Force Rotate: 0
 Autolock Managers: false
 Root Rotation In Progress: false
 Node Address: 10.157.149.235
 Manager Addresses:
  10.157.149.235:2377
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version:
runc version: N/A
init version: fec3683
Security Options:
 seccomp
  Profile: default
Kernel Version: 3.10.0-1127.el7.x86_64
Operating System: Oracle Linux Server 7.8
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 11.56GiB
Name: ech-10-157-149-235
ID: TFZJ:3M3N:AWIY:U4AC:PK7S:NQJK:SXXO:CEDL:4PF7:3LVD:QFVS:Z6CJ
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): true
 File Descriptors: 38
 Goroutines: 158
 System Time: 2020-09-28T09:33:37.73528739-05:00
 EventsListeners: 0
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
 xxxxxxxxx:xxxx
 xxxxxxxxx:xxxx
Registry Mirrors:
 xxxxxxxxx:xxxx
Live Restore Enabled: false
Product License: Community Engine

Registries: docker.io (secure)

问题是，我能够从dockerHub成功提取图像。但是，从不安全的注册表中拉出时出现以下错误。

net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)

• 我已将不安全的注册表添加到/ etc / hosts
• 我已将不安全的注册表添加到/etc/docker/daemon.json
• 我还尝试过在“ /etc/systemd/system/docker.service.d”中的conf文件中添加不安全的注册表。

任何建议都值得赞赏。