I have got a
Centos 7.3. I have a container which requires to connect to
redis in remote server to get some data for working on them. I have opened the port of
redis for this server and I can see that port and connect to it using
telnet. From inside of the container as well, I made
telnet to that host and port and it worked. Unfortunately when I make it up it cannot connect to the remote server
redis. I have tested this container on another host and it works! I appreciate your help!. Thanks.
Source: Docker Questions