08.08.2018 · 192.168.0.1:53: read: connection refused. The embedded DNS (accessible through 127.0.0.11 inside the container networking namespace) only handles service discovery/resolution; any other DNS lookup is forwarded to the DNS that's configured on the host (or set through the --dns option either on docker run, or configured on the dockerd daemon) In ...
18.11.2019 · Note: The DNS server is always at 127.0.0.11. Docker maintains an embedded DNS server when a user-defined network is in use. Test the embedded DNS server. Start another docker container with docker run --rm -it --network my-net ubuntu /bin/bash.
Sep 22, 2020 · Edit: No DNS names at all can be resolved. 127.0.0.11 refuses all connections. I can ping any external IP addresses, as well as the IP of other containers on the same docker network. It is only the 127.0.0.11 DNS server that is not working. 127.0.0.11 still replies to ping from within the container. Source: Docker Questions.
Aug 08, 2018 · The embedded DNS (accessible through 127.0.0.11 inside the container networking namespace) only handles service discovery/resolution; any other DNS lookup is forwarded to the DNS that's configured on the host (or set through the --dns option either on docker run, or configured on the dockerd daemon)
Oct 31, 2016 · [email protected]:~$ docker exec -t web1 more /etc/resolv.conf search lab.lab nameserver 127.0.0.11 options ndots:0 [email protected]:~$ Notice how the name server for this container is now 127.0.0.11. This IP address represents Docker’s embedded DNS server and will be used for any container which is connected to a user-defined network.
Sep 22, 2020 · Edit: No DNS names at all can be resolved. 127.0.0.11 refuses all connections. I can ping any external IP addresses, as well as the IP of other containers on the same docker network. It is only the 127.0.0.11 DNS server that is not working. 127.0.0.11 still replies to ping from within the container. docker docker-compose.
22.09.2020 · docker-compose internal DNS server 127.0.0.11 connection refused. Suddenly when I deployed some new containers with docker-compose the internal hostname resolution didn’t work. Okay so the issue is that the docker DNS server has stopped working. All already started containers still function, but any new ones started has this issue.
21.09.2020 · Edit: No DNS names at all can be resolved. 127.0.0.11 refuses all connections. I can ping any external IP addresses, as well as the IP of other containers on the same docker network. It is only the 127.0.0.11 DNS server that is not working. 127.0.0.11 still replies to ping from within the container. docker docker-compose.
WARNING Misconfigured DNS in /etc/resolv.conf: Primary DNS should be 127.0.0.1 (found 127.0.0.11) nameserver 127.0.0.11 options ndots:0` This appears to happen every time I bring up a new container using docker-compose up. Steps to Reproduce and debugging done. Run the docker-compose file in the readme
31.10.2016 · [email protected]:~$ docker exec -t web1 more /etc/resolv.conf search lab.lab nameserver 127.0.0.11 options ndots:0 [email protected]:~$ Notice how the name server for this container is now 127.0.0.11. This IP address represents Docker’s embedded DNS server and will be used for any container which is connected to a user-defined network.
Oct 31, 2017 · Remember that 127.0.0.11 is not a networked address, but it is a localhost loopback, as it is 127.0.0.1 or it is 127.0.0.33. So for each container, docker maintains a separate instance of “what to see there” depending on other factors beyond the private IP address itself. docker container inspect and docker network inspect could help at this point.
17.01.2017 · Maybe you have already found that Docker (aka Moby) internally uses libnetwork to configure and enable the embedded DNS resolver.Libnetwork binds the resolver to the container's loopback interface, so that DNS queries at 127.0.0.11 can be routed (via iptables) to the "backend DNS resolver" in the Docker Engine. See the libnetwork type and the actual ResolveName() code.
25.09.2018 · This is often done for debugging the network, and is also how pods work in kubernetes. Here's an example of running a second container: $ docker run -it --rm --net container:$ (docker ps -lq) nicolaka/netshoot /bin/sh / # ss -lnt State Recv-Q Send-Q Local Address:Port Peer Address:Port LISTEN 0 10 127.0.0.1:8888 *:* LISTEN 0 128 127.0.0.11 ...
30.04.2020 · It seems that 127.0.0.11 also resolves the “local names” for connected containers. If one of your containers is connected to a docker network and the other to another one, the DNS resolvers “phantomly appearing” into 127.0.0.11 could behave different. Remember that 127.0.0.11 is not a networked address, but it is a localhost loopback ...
Docker drivers use virtual adapters to connect containers on the same Linux Bridge); Iptables (built-in mechanism in the Linux kernel that allows packet ...