Local resolver: dnsmasq in NetworkManager When NetworkManager is set up to use dnsmasq, it runs with a configuration that’s built dynamically, and updated when the network settings change (e.g. to switch upstream resolvers according to DHCP or VPN settings). You can add drop-in configurations in the /etc/NetworkManager/dnsmasq.d directory.
04.09.2019 · Docker containers take DNS IPs from the host machine, which is managed by systemd-resolve . Those IPs themselves are the cloud provider’s DNS. Just the last question, why do we need systemd-resolve...
Binding port 53 on the host machine is optional, but will make it easier when configuring local resolving. The DNS server running in devdns is set to proxy ...
conf nameservers from my local DNS server to Google's public DNS servers (8.8.8.8 and 8.8.4.4) and still have no luck. I also set the DNS to Google in the ...
28.12.2020 · I am running a (real) small stack of two Raspberry Pi hosts (assume names “A” and “B”) with Hypriot OS and Docker 20.10.1. Host “A” operates a recursive DNS resolver as a Docker Compose stack attached to a custom bridged network, publishing / mapping port 53 (UDP). The host IP is announced to my local network by my internet router ...
18.06.2018 · Docker DNS Docker container has inbuilt DNS which automatically resolves IP to container names in user-defined networks. But what if you want to use external DNS into the container for some project need. Or how to use external DNS in all the containers run on my host? In this article, we will walk you through the below points : Docker native DNS
24.02.2019 · Running. First build the Docker image. In this example the name is bind9: $ sudo docker build -t bind9 . Run a container in background, using the same IP as in the db.nagoya-foundation.com file ...
18.03.2012 · 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. Docker uses a property set in /etc/docker/daemon.json file (on host) for populating entries in /etc/resolv.conf inside container.
10.12.2015 · Currently Docker would work with the local DNS resolver, but would not use it. When /etc/resolv.conf contains the localhost address, Docker ignores it and rather puts the Google's DNS resolvers (8.8.8.8 and 8.8.4.4) into the containers's resolv.conf.
13.03.2018 · You can use the host's local DNS resolver (e.g. dnsmasq) from your Docker containers if they are on a user defined network. In that case a container's /etc/resolv.conf will have the nameserver 127.0.0.11 (a.k.a. the Docker's embedded DNS server ), which can forward DNS requests to the host's loopback address properly.
Local resolver is configured as an open resolver. It will respond to any request sent. This is quite comfortable in terms of availability of the services, but also could be a risk if the service is available from the outside networks.