我有几个服务在docker容器中运行,一个Nginx服务器在它们前面,所有容器都在同一个docker网络中.在docker 1.10之前我创建了一个dnsmasq容器并在Nginx中设置了解析器,因此可以从Nginx中发现我的服务.
但升级到docker 1.10.1后,dnsmasq映像不起作用.经过一些研究,我尝试使用地址127.0.0.11中的新“嵌入式dns”(我认为这应该是在docker网络中使用的正确方法).虽然我可以从Nginx容器ping到服务容器,但是Nginx继续发送回来无法解决(3：Host not found).
然后我尝试使用host命令,我得到了非常令人困惑的结果:(第一个ip地址,然后找不到主机 – 与我从Nginx获得的代码相同)
@H_301_9@# host service-ui
service-ui has address 172.18.0.7
Host service-ui not found: 3(NXDOMAIN)
Host service-ui not found: 3(NXDOMAIN)
Ping工作
@H_301_9@/# ping service-ui
PING service-ui (172.18.0.7): 56 data bytes
64 bytes from 172.18.0.7: icmp_seq=0 ttl=64 time=1.123 ms
64 bytes from 172.18.0.7: icmp_seq=1 ttl=64 time=0.131 ms
64 bytes from 172.18.0.7: icmp_seq=2 ttl=64 time=0.178 ms
以下是我的配置的简化版本：
泊坞窗,compose.yml
@H_301_9@version: '2'
services:
Nginx:
build: .
ports:
- 80:80
service-ui:
image: service-ui
networks:
default:
external:
name: ssx
容器中的Nginx.conf
@H_301_9@ location ~ /([a-z]*)/ {
resolver 127.0.0.11;
proxy_pass http://$1-ui:9000$uri$is_args$args;
}
这也是来自主持人的详细结果：
@H_301_9@# host -v service-ui
Trying "service-ui"
;; ->>HEADER<<- opcode: QUERY,status: NOERROR,id: 55237
;; flags: qr rd; QUERY: 1,ANSWER: 1,AUTHORITY: 0,ADDITIONAL: 0
;; QUESTION SECTION:
;service-ui. IN A
;; ANSWER SECTION:
service-ui. 1800 IN A 172.18.0.7
Received 52 bytes from 127.0.0.11#53 in 1 ms
Trying "service-ui"
Host service-ui not found: 3(NXDOMAIN)
Received 102 bytes from 127.0.0.11#53 in 1 ms
Received 102 bytes from 127.0.0.11#53 in 1 ms
Trying "service-ui"
Host service-ui not found: 3(NXDOMAIN)
Received 102 bytes from 127.0.0.11#53 in 1 ms
Received 102 bytes from 127.0.0.11#53 in 1 ms
我的码头版
@H_301_9@Client:
Version: 1.10.1
API version: 1.22
Go version: go1.5.3
Git commit: 9e83765
Built: Thu Feb 11 19:27:08 2016
OS/Arch: linux/amd64
Server:
Version: 1.10.1
API version: 1.22
Go version: go1.5.3
Git commit: 9e83765
Built: Thu Feb 11 19:27:08 2016
OS/Arch: linux/amd64
谁能帮我弄清楚出了什么问题？或者如何深入研究这个问题？
最佳答案
这是因为docker dns服务器不执行ipv6,但是从1.5.8：http://nginx.org/en/docs/http/ngx_http_core_module.html#resolver开始,Nginx解析器同时查询ipv6和ipv4
