DOCKER NETWORK SETTINGS HOW TO SET THIS

To increase processing power, set this. Advanced settings are: CPUs: By default, Docker Desktop is set to use half the number of processors available on the host machine. On the Advanced tab, you can limit resources available to Docker. Dialer Setup tunnel for host 10.0.0.1 INFO0000 network Deploying.By Ivan Smirnov Feb 11th 2021 Tags: docker, networking, pihole OverviewThe Resources tab allows you to configure CPU, memory, disk, proxies, network, and other resources. Confirm the Docker container is actually running and listening on the right portThe Kubernetes cluster components are launched using Docker on a Linux distro. Troubleshooting Home Assistant Docker unreachable on CentOS Step 1.

This will allow all clients to use it as a DNS server, and enable pretty usage graphs and client breakdowns in your pihole admin panel.In order to get the most value out of this article, you will need:If you need to install docker, see the DigitalOcean article or use this ansible role. Not everyone has a spare Raspberry Pi laying around, but some of folks do have a server with docker installed.This blog post will showcase some really neat tricks using Docker's Macvlan networks and linux networking to create a pihole instance that's attached to your local network.The final result will be a pihole docker container running with a dedicated IP, exposed to your local network. To share files between a virtual machine and the host, it is possible to set up and Network Filesystem (NFS) share.The internet is full of ads these days, and the pihole is a fantastic way to block all these ads in a configurable manner.

IMPORTANT: make sure the ServerIP variable matches the static IP address you picked earlier.Note: you'll also notice that we reference an external network called macvlan0, rather than include a section like this that defines a network in the docker-compose file: networks:This would be a decent solution if you only use one container, but for better maintainability it's recommended to create the macvlan network externally, and simply connect the container to it by setting networks:This will ensure that your network doesn't disappear when you run a docker-compose down, since that would break the startup scripts defined below.Note: hold off on running docker-compose up -d, since we still need to create our network. We set a few mandatory environment variables. We manually set DNS on the host container to localhost, so that it uses the pihole resolver we set a static ipv4_address on our macvlan0 network (used later) - this is the address that will be your local DNS for your entire network We add the NET_ADMIN capability allows modification of network interfaces on the host system We have to specify a mac address so that the network binds work correctly later

-o sets driver specific options. -gateway is the IP of your local router, so that the docker container can dial out to the internet Take the IP of your server, and add the /24 flag on it so that the range is set from. -subnet address of your local subnet. -d sets the driver, which in this case is macvlan

You must pick an address that is within the macvlan ip range. This ensures that no docker container gets assigned this IP, as it would cause a network collision. -aux-address defines a reserved address in this new network. This should be set to the same physical interface that your server uses for the physical IP.

Docker Network Settings How To Set This

The -aux-address should be present inside the ip range, so in this case we picked 10.0.37.60Enable docker to host communication over macvlanBy default, docker will connect the guest containers directly to the local network. In this case, the IP range is 10.0.37.59/28, which expands to 10.0.37.49 - 10.0.37.62 A subsection of your main local network (so inside the subnet). See below for an explanation of how to set this

With promiscuous mode, we allow the capture of all packets, which then may or may not get matched by our various virtual macs.Second, we create a new network: sudo ip link add macvlan-shim link eth0 type macvlan mode bridge Explanation: The ip link add adds a virtual link called macvlan-shim. That traffic is explicitly filtered by the kernel modules themselves to offer additional provider isolation and security.However, it is possible to set up a macvlan-shim network that will solve this issue for us.First, we enable promiscuous mode on our parent interface: sudo ip link set eth0 promisc on Explanation: Normally, only packets destined for the interface mac address are accepted. For example, if you create a container and try to ping the Docker hostвЂ™s eth0 it will not work.

The TLDR is that out of 32 bits in a network, we lock 28 bits, which leaves 4 bits free. If you don't understand this, read the basics of subnets. Note also that the netmask is 255.255.255.240, which translates to the /28 bits of freedom that we assigned in our ip addr add command. This means that your server now has a second IP, which is INSIDE the subnet range for your docker macvlan network.

Luckily, this is easy to solve.First, make a script with the commands we used above to create the network. If your DNS is very slow, this is likely the cause. This will cause incredibly slow DNS lookups that time out, since there is no route to our pihole instance. If all goes well, you should see the usual ping output: PING 10.0.37.60 (10.0.37.60) 56(84) bytes of data.64 bytes from 10.0.37.60: icmp_seq=1 ttl=64 time=0.045 ms64 bytes from 10.0.37.60: icmp_seq=2 ttl=64 time=0.072 msIf we don't persist these settings, the system network definition will be lost upon the next reboot. Test our new network by starting up and shelling into your container, then running a ping: # start up our piholeDocker exec -ti pihole-vlan ping -c 4 10.0.37.60Where 10.0.37.60 is replaced by your server's macvlan injected IP address. For a better understanding of how subnets work, check out this useful resource over at.

Docker For Mac Network Settings