使用docker v 17.03.1-ce,在linux mint机上,我无法使用我的浏览器(Local-Host port 9000(到达容器Web服务器(容器端口5000(主机。
使用命令启动的容器:
sudo docker run -d -p 9000:5000 --name myContainer imageName
- 我首先检查了我的容器上的服务器(烧瓶(是否正确启动。它已启动。
- 我想检查服务器是否正常工作,因此在容器中,使用卷发,我在端口5000的Localhost上发送了一个GET请求。服务器返回了网页
因此,服务器正在工作,因此该问题位于容器和主机之间的通信中。
我检查了iptables,但不确定该怎么做:
sudo iptables -l
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy DROP)
target prot opt source destination
DOCKER-ISOLATION all -- anywhere anywhere
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
DOCKER all -- anywhere anywhere
ACCEPT all -- anywhere anywhere ctstate RELATED,ESTABLISHED
ACCEPT all -- anywhere anywhere
ACCEPT all -- anywhere anywhere
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
Chain DOCKER (2 references)
target prot opt source destination
ACCEPT tcp -- anywhere 172.17.0.2 tcp dpt:5000
Chain DOCKER-ISOLATION (1 references)
target prot opt source destination
DROP all -- anywhere anywhere
DROP all -- anywhere anywhere
RETURN all -- anywhere anywhere
sudo iptables -t nat -l -n -n
Chain PREROUTING (policy ACCEPT)
target prot opt source destination
DOCKER all -- 0.0.0.0/0 0.0.0.0/0 ADDRTYPE match dst-type LOCAL
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
DOCKER all -- 0.0.0.0/0 !127.0.0.0/8 ADDRTYPE match dst-type LOCAL
Chain POSTROUTING (policy ACCEPT)
target prot opt source destination
MASQUERADE all -- 172.17.0.0/16 0.0.0.0/0
MASQUERADE all -- 172.18.0.0/16 0.0.0.0/0
MASQUERADE tcp -- 172.17.0.2 172.17.0.2 tcp dpt:5000
Chain DOCKER (2 references)
target prot opt source destination
RETURN all -- 0.0.0.0/0 0.0.0.0/0
RETURN all -- 0.0.0.0/0 0.0.0.0/0
DNAT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:9000 to:172.17.0.2:5000
预期结果:使用我的浏览器,使用url" localhost:9000",我可以接收从容器发送的主页,通过端口5000。
编辑:添加Docker Logs和Docker PS
Docker PS
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
59a20248c5b2 apptest "python3 src/jboos..." 12 hours ago Up 12 hours 0.0.0.0:9000->5000/tcp jboost
sudo docker日志jboost
* Serving Flask app "jboost_app" (lazy loading)
* Environment: production
WARNING: Do not use the development server in a production environment.
Use a production WSGI server instead.
* Debug mode: on
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
* Restarting with stat
* Debugger is active!
* Debugger PIN: 310-292-856
127.0.0.1 - - [03/Jul/2019 04:12:54] "GET / HTTP/1.1" 200 -
编辑2 :添加Curl localhost的结果:9000在主机机器上因此,当与我的Web浏览器连接时,连接不起作用,但是Curl提供了更具体的消息:
curl localhost:9000
curl: (56) Recv failure: Connection reset by peer
我在这篇文章中找到了解决方案:https://devops.stackexchange.com/questions/3380/dockerized-flask-connection-connection-reset-reset-by-peer
Docker网络和端口转发正常工作。问题在于我的烧瓶服务器。默认情况下,该服务器被配置为仅接受本地主机的请求。
使用"运行"命令启动闪存服务器时,您必须指定host ='0.0.0.0',以便可以使用任何IP。
if __name__ == "__main__":
app.run(host='0.0.0.0')