The host's dnsmasq listens only for requests comming from localhost and blocks requests coming from the docker container. Since using 127.0.1.1 within docker doesn't work, docker falls back to Google's public DNS, which do not work either. There may be several reasons why DNS is broken within docker containers.
04.02.2019 · Today we were installing docker on Windows on laptops that are part of our domain. Everything seemed to go fine. After that installed the navcontainerhelper module and ran the New-NavContainerHelper cmdlet. While running we got the warning: DNS resolution not working from within the container.
The symptom is: the host machine has proper network access, but programs running within containers can't resolve DNS names (which may appear to be "can't ...
First thing to check is run cat /etc/resolv.conf in the docker container. If it has an invalid DNS server, such as nameserver 127.0.x.x , then the container ...
Mar 19, 2012 · 1 Answer1. Show activity on this post. Looks like DNS resolution inside docker is not working properly. For linux systems, DNS resolution happens using /etc/resolv.conf file, check this file inside your container, if it has invalid DNS, then your container won't be able to resolve hostnames.
Feb 08, 2021 · I have Docker Desktop installed on a Windows 10 Enterprise machine (build 20H2) connected to a domain. It is a VM running on VMware, but passthrough virtualization is enabled. From inside any container that I run, the Docker Engine’s DNS server is not responding.
The host's dnsmasq listens only for requests comming from localhost and blocks requests coming from the docker container. Since using 127.0.1.1 within docker doesn't work, docker falls back to Google's public DNS, which do not work either. There may be several reasons why DNS is broken within docker containers.
If it is a DNS resolver problem, here is the solution: First thing to check is run cat /etc/resolv.conf in the docker container.If it has an invalid DNS server, such as nameserver 127.0.x.x, then the container will not be able to resolve the domain names into ip addresses, so ping google.com will fail.. Second thing to check is run cat /etc/resolv.conf on the host machine.
Jul 08, 2021 · Let's make sure the container honors our DNS configuration. For that, access the shell of the container with the command: docker exec -it ubuntuDNS bash. From the shell, issue the command: cat ...
26.10.2020 · Amazon Internal DNS Not Working Inside ECS Docker Containers. Ask Question Asked 1 year, 2 months ago. Active 1 year, 2 months ago. Viewed 674 times 0 I have containers running via a service in ECS that start up every day. Today, they can't access ...
08.02.2021 · I have Docker Desktop installed on a Windows 10 Enterprise machine (build 20H2) connected to a domain. It is a VM running on VMware, but passthrough virtualization is enabled. From inside any container that I run, the Docker Engine’s DNS server is not responding.
Aug 29, 2019 · Hi, I came across strange issue. When I run a container on my Windows 10 or Server 2019 in process isolation mode it seems the DNS from within the container doesn’t work. When I run the same container in hyperv mode all works just fine.