在Linux Mint机器上使用Docker v 17.03.1-ce,我无法通过主机上的浏览器(本地主机端口9000)访问容器Web服务器(容器端口5000)。
使用命令启动容器:
sudo docker run -d -p 9000:5000 --name myContainer imageName
因此,服务器正在运行,因此问题出在容器与主机之间的通信中。
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
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:使用浏览器,URL为“ localhost:9000”,我可以通过端口5000接收容器发送的主页。
编辑:添加docker日志和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 logs 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 :在主机上添加curl localhost:9000的结果 因此,当使用我的Web浏览器进行连接时,该连接不起作用,但是curl给出了更具体的消息:
curl localhost:9000
curl: (56) Recv failure: Connection reset by peer
答案 0 :(得分:1)
我在这篇文章中找到了解决方法:https://devops.stackexchange.com/questions/3380/dockerized-flask-connection-reset-by-peer
Docker网络和端口转发正常运行。问题出在我的烧瓶服务器上。似乎默认情况下,服务器配置为仅接受来自本地主机的请求。
在启动Flash服务器时,使用“运行”命令,必须指定host ='0.0.0.0',以便可以提供任何IP。
if __name__ == "__main__":
app.run(host='0.0.0.0')