解決docker pull 從官方庫無法拉取鏡像的問題

默認獲取鏡像失敗

[root@k8s-master ~]# docker pull kubernetesui/dashboard:v2.3.1
Error response from daemon: Get https://registry-1.docker.io/v2/kubernetesui/dashboard/manifests/sha256:ec27f462cf1946220f5a9ace416a84a57c18f98c777876a8054405d1428cc92e: read tcp 192.168.103.174:33176->34.197.211.151:443: read: connection reset by peer

通過dig指令獲取registry-1.docker.io的IP，並選取一個IP寫入hosts

[root@k8s-master ~]# dig @114.114.114.114 registry-1.docker.io

; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.5 <<>> @114.114.114.114 registry-1.docker.io
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35548
;; flags: qr rd ra; QUERY: 1, ANSWER: 8, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;registry-1.docker.io.        IN    A

;; ANSWER SECTION:
registry-1.docker.io.    37    IN    A    52.72.232.213
registry-1.docker.io.    37    IN    A    35.169.249.115
registry-1.docker.io.    37    IN    A    54.236.165.68
registry-1.docker.io.    37    IN    A    34.231.251.252
registry-1.docker.io.    37    IN    A    35.153.88.109
registry-1.docker.io.    37    IN    A    54.85.56.253
registry-1.docker.io.    37    IN    A    54.161.109.204
registry-1.docker.io.    37    IN    A    18.214.230.110

;; Query time: 23 msec
;; SERVER: 114.114.114.114#53(114.114.114.114)
;; WHEN: 四 7月 15 14:32:59 CST 2021
;; MSG SIZE  rcvd: 177

[root@k8s-master ~]# vi /etc/hosts

再嘗試拉取鏡像成功

[root@k8s-master ~]# docker pull kubernetesui/dashboard:v2.3.1
v2.3.1: Pulling from kubernetesui/dashboard
b82bd84ec244: Pull complete 
21c9e94e8195: Pull complete 
Digest: sha256:ec27f462cf1946220f5a9ace416a84a57c18f98c777876a8054405d1428cc92e
Status: Downloaded newer image for kubernetesui/dashboard:v2.3.1
docker.io/kubernetesui/dashboard:v2.3.1
[root@k8s-master ~]# 
[root@k8s-master ~]# docker pull kubernetesui/metrics-scraper:v1.0.6
v1.0.6: Pulling from kubernetesui/metrics-scraper
47a33a630fb7: Pull complete 
62498b3018cb: Pull complete 
Digest: sha256:1f977343873ed0e2efd4916a6b2f3075f310ff6fe42ee098f54fc58aa7a28ab7
Status: Downloaded newer image for kubernetesui/metrics-scraper:v1.0.6
docker.io/kubernetesui/metrics-scraper:v1.0.6
[root@k8s-master ~]#