diff --git a/nixos/doc/manual/administration/container-networking.section.md b/nixos/doc/manual/administration/container-networking.section.md new file mode 100644 index 000000000000..0873768376cc --- /dev/null +++ b/nixos/doc/manual/administration/container-networking.section.md @@ -0,0 +1,44 @@ +# Container Networking {#sec-container-networking} + +When you create a container using `nixos-container create`, it gets it +own private IPv4 address in the range `10.233.0.0/16`. You can get the +container's IPv4 address as follows: + +```ShellSession +# nixos-container show-ip foo +10.233.4.2 + +$ ping -c1 10.233.4.2 +64 bytes from 10.233.4.2: icmp_seq=1 ttl=64 time=0.106 ms +``` + +Networking is implemented using a pair of virtual Ethernet devices. The +network interface in the container is called `eth0`, while the matching +interface in the host is called `ve-container-name` (e.g., `ve-foo`). +The container has its own network namespace and the `CAP_NET_ADMIN` +capability, so it can perform arbitrary network configuration such as +setting up firewall rules, without affecting or having access to the +host's network. + +By default, containers cannot talk to the outside network. If you want +that, you should set up Network Address Translation (NAT) rules on the +host to rewrite container traffic to use your external IP address. This +can be accomplished using the following configuration on the host: + +```nix +networking.nat.enable = true; +networking.nat.internalInterfaces = ["ve-+"]; +networking.nat.externalInterface = "eth0"; +``` + +where `eth0` should be replaced with the desired external interface. +Note that `ve-+` is a wildcard that matches all container interfaces. + +If you are using Network Manager, you need to explicitly prevent it from +managing container interfaces: + +```nix +networking.networkmanager.unmanaged = [ "interface-name:ve-*" ]; +``` + +You may need to restart your system for the changes to take effect. diff --git a/nixos/doc/manual/administration/container-networking.xml b/nixos/doc/manual/administration/container-networking.xml deleted file mode 100644 index 42486f01fe8c..000000000000 --- a/nixos/doc/manual/administration/container-networking.xml +++ /dev/null @@ -1,59 +0,0 @@ -
- Container Networking - - - When you create a container using nixos-container create, - it gets it own private IPv4 address in the range - 10.233.0.0/16. You can get the container’s IPv4 address - as follows: - -# nixos-container show-ip foo -10.233.4.2 - -$ ping -c1 10.233.4.2 -64 bytes from 10.233.4.2: icmp_seq=1 ttl=64 time=0.106 ms - - - - - Networking is implemented using a pair of virtual Ethernet devices. The - network interface in the container is called eth0, while - the matching interface in the host is called - ve-container-name (e.g., - ve-foo). The container has its own network namespace and - the CAP_NET_ADMIN capability, so it can perform arbitrary - network configuration such as setting up firewall rules, without affecting or - having access to the host’s network. - - - - By default, containers cannot talk to the outside network. If you want that, - you should set up Network Address Translation (NAT) rules on the host to - rewrite container traffic to use your external IP address. This can be - accomplished using the following configuration on the host: - - = true; - = ["ve-+"]; - = "eth0"; - - where eth0 should be replaced with the desired external - interface. Note that ve-+ is a wildcard that matches all - container interfaces. - - - - If you are using Network Manager, you need to explicitly prevent it from - managing container interfaces: - -networking.networkmanager.unmanaged = [ "interface-name:ve-*" ]; - - - - - You may need to restart your system for the changes to take effect. - -
diff --git a/nixos/doc/manual/administration/containers.xml b/nixos/doc/manual/administration/containers.xml index f149ce7bbfe6..8e0e300f367b 100644 --- a/nixos/doc/manual/administration/containers.xml +++ b/nixos/doc/manual/administration/containers.xml @@ -30,5 +30,5 @@ - + diff --git a/nixos/doc/manual/from_md/administration/container-networking.section.xml b/nixos/doc/manual/from_md/administration/container-networking.section.xml new file mode 100644 index 000000000000..788a2b7b0acb --- /dev/null +++ b/nixos/doc/manual/from_md/administration/container-networking.section.xml @@ -0,0 +1,54 @@ +
+ Container Networking + + When you create a container using + nixos-container create, it gets it own private + IPv4 address in the range 10.233.0.0/16. You can + get the container’s IPv4 address as follows: + + +# nixos-container show-ip foo +10.233.4.2 + +$ ping -c1 10.233.4.2 +64 bytes from 10.233.4.2: icmp_seq=1 ttl=64 time=0.106 ms + + + Networking is implemented using a pair of virtual Ethernet devices. + The network interface in the container is called + eth0, while the matching interface in the host is + called ve-container-name (e.g., + ve-foo). The container has its own network + namespace and the CAP_NET_ADMIN capability, so it + can perform arbitrary network configuration such as setting up + firewall rules, without affecting or having access to the host’s + network. + + + By default, containers cannot talk to the outside network. If you + want that, you should set up Network Address Translation (NAT) rules + on the host to rewrite container traffic to use your external IP + address. This can be accomplished using the following configuration + on the host: + + +networking.nat.enable = true; +networking.nat.internalInterfaces = ["ve-+"]; +networking.nat.externalInterface = "eth0"; + + + where eth0 should be replaced with the desired + external interface. Note that ve-+ is a wildcard + that matches all container interfaces. + + + If you are using Network Manager, you need to explicitly prevent it + from managing container interfaces: + + +networking.networkmanager.unmanaged = [ "interface-name:ve-*" ]; + + + You may need to restart your system for the changes to take effect. + +