docker 無法正常pull鏡像

Using default tag: latest
Trying to pull repository docker.io/library/centos ...
Get https://registry-1.docker.io/v2/library/centos/manifests/latest: net/http: TLS handshake timeout

解決方法

1. 通過命令查詢可用的解析IP

   dig @114.114.114.114 registry-1.docker.io
   
   工具需要安裝一個命令dig
   yum install bind-utils   
   
   其它版本安裝方式：
   在Gentoo下是bind-tools，在Redhat/Fedora下是 bind-utils，或者在   Debian下是 dnsutils。        

   [root@tomcat8 ~]# dig @114.114.114.114 registry-1.docker.io

   ; <<>> DiG 9.9.4-RedHat-9.9.4-72.el7 <<>> @114.114.114.114 registry-1.docker.io
   ; (1 server found)
   ;; global options: +cmd
   ;; Got answer:
   ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58485
   ;; flags: qr rd ra; QUERY: 1, ANSWER: 8, AUTHORITY: 0, ADDITIONAL: 1

   ;; OPT PSEUDOSECTION:
   ; EDNS: version: 0, flags:; udp: 4096
   ;; QUESTION SECTION:
   ;registry-1.docker.io. IN A

   ;; ANSWER SECTION:
   registry-1.docker.io. 30 IN A 34.205.207.96
   registry-1.docker.io. 30 IN A 34.201.236.93
   registry-1.docker.io. 30 IN A 54.175.43.85
   registry-1.docker.io. 30 IN A 34.200.28.105
   registry-1.docker.io. 30 IN A 52.70.175.131
   registry-1.docker.io. 30 IN A 52.54.155.177
   registry-1.docker.io. 30 IN A 34.206.236.31
   registry-1.docker.io. 30 IN A 54.165.149.19

   2. 修改hosts記錄文件

      vi /etc/hosts
      52.54.155.177 registry-1.docker.io

   3. docker pull centos

      [root@tomcat8 ~]# docker pull centos
      Using default tag: latest
      Trying to pull repository docker.io/library/centos ...
      latest: Pulling from docker.io/library/centos
      a02a4930cb5d: Downloading [=======> ] 11.8 MB/75.17 MB