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exploring Docker 17.06.
I've installed docker on Centos 7 and created a container. Started the container with the default bridge. I can ping both host adapters, but not the outside world e.g. www.google.com
All advise out there is based on older versions of Docker and it's iptables settings.
I would like to understand how to ping to the outside world, what is required please?
TIA!
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Docker installs two custom iptables chains named DOCKER-USER and DOCKER , and it ensures that incoming packets are always checked by these two chains first. All of Docker's iptables rules are added to the DOCKER chain. Do not manipulate this chain manually.
To ping/access docker's container from PC-B , run the below iptables -rules in the host. note: eth0 is host's interface and docker0 is docker's virtual default bridge. ping/access container services directly.
Connect a container to a network when it starts You can also use the docker run --network=<network-name> option to start a container and immediately connect it to a network.
In my case restarting docker daemon helped
sudo systemctl restart docker
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