@TOC
一、报错信息
[root@node ~]# docker pull o2oa/o2server
Using default tag: latest
Error response from daemon: Head "https://registry-1.docker.io/v2/o2oa/o2server/manifests/latest": net/http: TLS handshake timeout
二、检查daemon.json 文件
1.编辑daemon.json
可额外添加阿里云的镜像加速
```cpp
[root@node ~]# cat /etc/docker/daemon.json
{"registry-mirrors": ["https://registry.docker-cn.com","http://hub-mirror.c.163.com"]}
## 2.重启服务
```cpp
systemctl daemon-reload
systemctl restart docker
三、查看dns解析
[root@node ~]# 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: 37194
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, 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. 32 IN A 44.194.5.25
registry-1.docker.io. 32 IN A 44.207.96.114
registry-1.docker.io. 32 IN A 44.207.51.64
;; Query time: 31 msec
;; SERVER: 114.114.114.114#53(114.114.114.114)
;; WHEN: Sat Aug 13 23:16:55 CST 2022
;; MSG SIZE rcvd: 97
四、添加host解析
[root@node ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
44.194.5.25 registry-1.docker.io
五、重新拉取镜像
[root@node ~]# docker pull o2oa/o2server
Using default tag: latest
latest: Pulling from o2oa/o2server
125a6e411906: Pull complete
afe724e20696: Pull complete
fde7ffb259f7: Pull complete
5aec3a1a0b3a: Pull complete
