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add file docs/lxd_container_home_server_networking_for_dummies.md
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Obviously, the commit history will reflect the time when these documents are written.
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Obviously, the commit history will reflect the time when these documents are written.
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* [Serve And Share Apps From Your Phone With Fdroid](serve_and_share_apps_from_your_phone_with_fdroid.md)
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* [Serve And Share Apps From Your Phone With Fdroid](serve_and_share_apps_from_your_phone_with_fdroid.md)
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* [LXD Container Home Server Networking For Dummies](lxd_container_home_server_networking_for_dummies.md)
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* [Nspawn Containers](nspawn.md)
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* [Nspawn Containers](nspawn.md)
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* [Mastodon on Arch](mastodon_on_arch.md)
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* [Mastodon on Arch](mastodon_on_arch.md)
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* [Debian Nspawn Container On Arch For Testing Apache Configurations](debian_nspawn_container_on_arch_for_testing_apache_configurations.md)
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* [Debian Nspawn Container On Arch For Testing Apache Configurations](debian_nspawn_container_on_arch_for_testing_apache_configurations.md)
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# LXD Container Home Server Networking For Dummies
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## Why?
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If you're going to operate a fleet of LXD containers for home
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entertainment, you probably want some of them exposed with their
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own ip addresses on your home network, so that you can use them
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as containerized servers for various applications.
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Others containers, you might want to be inaccessable from the lan,
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in a natted subnet, where they can solicit connections to the
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outside world from within their natted subnet, but are not addressable
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from the outside. A database server that you connect a web app to, for
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instance, or a web app that you have a reverse proxy in front of.
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But these are two separate address spaces, so ideally all of the containers
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would have a second interface of their own, by which they could connect
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to a third network, that would be a private network that all of the containers
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can use to talk directly to each other (or the host machine).
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It's pretty straightforward, you just have to glue all the pieces together.
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## Three Part Overview.
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1. Define and create some bridges.
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2. Define profiles that combine the network
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interfaces in different combinations. In addition to two
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bridges you will have a macvlan with which to expose the containers
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that you want exposed, but the macvlan doesn't come into
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play until here in step two when you define profiles.
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3. Assign each container which profile it should use,
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and then configure the containers to use the included
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network interfaces correctly.
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## Build Sum Moar Bridges
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The containers will all have two network interfaces from
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their own internal point of view, *eth0* and *eth1*.
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In this
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scheme we create a bridge for a natted subnet and a bridge for
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a non-natted subnet. All of the containers will connect to the
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non-natted subnet on their second interface, *eth1*, and some
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of the containers will connect to the natted subnet on their
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first interface *eth0*. The containers that don't connect
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to the natted subnet will instead connect to a macvlan
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on their first interface *eth0*, but that isn't part of this
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step.
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### bridge for a natted subnet
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If you haven't used lxd before, you'll want to run the command `lxd init`.
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By default this creates exactly the bridge we want, called *lxdbr0*.
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Otherwise you would use the following command to create *lxdbr0*.
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```bash
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lxc network create lxdbr0
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```
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To generate a table of all the existing interfaces.
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```bash
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lxd network list
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```
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This bridge is for our natted subnet, so we just want to go with
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the default configuration.
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```bash
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lxc network show lxdbr0
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```
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This cats a yaml file where you can see the randomly
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generated network for *lxdbr0*.
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```yaml
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config:
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ipv4.address: 10.99.153.1/24
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ipv4.nat: "true"
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ipv6.address: fd42:211e:e008:954b::1/64
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ipv6.nat: "true"
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description: ""
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name: lxdbr0
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type: bridge
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used_by: []
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managed: true
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```
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### bridge for a non-natted subnet
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Create *lxdbr1*
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```bash
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lxc network create lxdbr1
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```
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Use the following commands to remove nat from
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lxdbr1.
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```bash
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lxc network set lxdbr1 ipv4.nat false
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lxc network set lxdbr1 ipv6.nat false
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```
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Of if you use this next command, your favourite
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text editor will pop open, preloaded with the complete yaml file
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and you can edit the configuration there.
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```bash
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lxc network edit lxdbr1
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```
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Either way you're looking for a result such as the following.
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Notice that the randomly generated address space is different
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that the one for *lxdbr0*, and that the *nat keys are set
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to "false".
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```yaml
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config:
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ipv4.address: 10.151.18.1/24
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ipv4.nat: "false"
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ipv6.address: fd42:89d4:f465:1b20::1/64
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ipv6.nat: "false"
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description: ""
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name: lxdbr1
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type: bridge
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used_by: []
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managed: true
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```
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## Profiles
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### recycle the default
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When you first ran `lxd init`, that created a default profile.
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Confirm with the following.
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```bash
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lxc profile list
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```
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To see what the default profile looks like.
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```bash
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lxc profile show default
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```
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```yaml
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config:
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environment.http_proxy: ""
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security.privileged: "true"
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user.network_mode: ""
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description: Default LXD profile
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devices:
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eth0:
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nictype: bridged
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parent: lxdbr0
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type: nic
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root:
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path: /
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pool: default
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type: disk
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name: default
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used_by: []
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```
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### profile the natted
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The easiest way to create a new profile is start by copying another one.
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```bash
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lxc profile copy default natted
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```
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edit the new *natted* profile
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```bash
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lxc profile edit natted
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```
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And add an *eth1* interface attached to *lxdbr1*. *eth0* and *eth1* will
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be the interfaces visible from the container's point of view.
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```yaml
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config:
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environment.http_proxy: ""
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security.privileged: "true"
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user.network_mode: ""
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description: Natted LXD profile
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devices:
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eth0:
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nictype: bridged
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parent: lxdbr0
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type: nic
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eth1:
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nictype: bridged
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parent: lxdbr1
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type: nic
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root:
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path: /
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pool: default
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type: disk
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name: natted
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used_by: []
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```
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Any container assigned to the *natted* profile, will have an interface *eth0* connected
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to a natted subnet, and a second interface *eth1* connected to a non-natted subnet, with
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|
a static ip on which it will be able to talk directly to the other containers and the host
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machine.
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|
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### profile the exposed
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Create the *exposed* profile
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```bash
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lxc profile copy natted exposed
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```
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and edit the new *exposed* profile
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```bash
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lxc profile edit exposed
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```
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change the nictype for *eth0* from `bridged` to `macvlan`, and the parent should be
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the name of the physical ethernet connection on the host machine, instead of a bridge.
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|
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|
```yaml
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config:
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|
environment.http_proxy: ""
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security.privileged: "true"
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user.network_mode: ""
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description: Exposed LXD profile
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devices:
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eth0:
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nictype: macvlan
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parent: eno1
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type: nic
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|
eth1:
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nictype: bridged
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parent: lxdbr1
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type: nic
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root:
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path: /
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pool: default
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type: disk
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name: exposed
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used_by: []
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```
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Any container assigned to the *exposed* profile, will have an interface *eth0* connected
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to a macvlan, addressable from your lan, just like any other arbitrary computer on
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your home network, and a second interface *eth1* connected to a non-natted subnet, with
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a static ip on which it will be able to talk directly to the other containers and the host
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machine.
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|
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## Assign Containers to Profiles and configure them to connect correctly.
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There are a lot of different ways that a Linux instance can solicit network services. So for
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|
now I will just describe a method that will work here for a lxc container from ubuntu:16.04, as
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well as a debian stretch container from images.linuxcontainers.org.
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Start a new container and assign the profile. We'll use an arbitrary whimsical container name,
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*quick-joey*. This process is the same for either the *natted* profile or the *exposed* profile.
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||||||
|
|
||||||
|
```bash
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|
lxc init ubuntu:16.04 quick-joey
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|
# assign the profile
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|
lxc profile assign quick-joey exposed
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|
# start quick-joey
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||||||
|
lxc start quick-joey
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|
# and start a bash shell
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|
lxc exec quick-joey bash
|
||||||
|
```
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||||||
|
|
||||||
|
You need to tell these containers how to connect to the non-natted subnet on *eth1*
|
||||||
|
With either an ubuntu:16.04 container, or a debian stretch container, for either the *natted* or
|
||||||
|
*exposed* profile, because of all the above configuration work they will automatically connect on
|
||||||
|
their *eth0* interfaces and be able to talk to the internet. You need to edit `/etc/network/interfaces`,
|
||||||
|
the main difference being what that file looks like before you edit it.
|
||||||
|
|
||||||
|
### ubuntu:16.04
|
||||||
|
|
||||||
|
If you start a shell on an ubuntu:16.04 container, you see that `/etc/network/interfaces`
|
||||||
|
describes the loopback device for localhost, then sources `/etc/network/interfaces.d/*.cfg` where
|
||||||
|
some magical cloud-config jazz is going on. You just want to add a static ip description for *eth1*
|
||||||
|
to the file `/etc/network/interfaces`. And obviously take that the static ip address you assign is
|
||||||
|
unique and on the same subnet with *lxdbr1*.
|
||||||
|
|
||||||
|
Reminder: the address for *lxdbr1* is 10.151.18.1/24, but it will be different on your machine.
|
||||||
|
|
||||||
|
```conf
|
||||||
|
auto lo
|
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|
iface lo inet loopback
|
||||||
|
|
||||||
|
source /etc/network/interfaces.d/*.cfg
|
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|
# what you add goes below here
|
||||||
|
auto eth1
|
||||||
|
iface eth1 inet static
|
||||||
|
address 10.151.18.123
|
||||||
|
netmask 255.255.255.0
|
||||||
|
broadcast 255.255.255.255
|
||||||
|
network 10.151.18.0
|
||||||
|
```
|
||||||
|
|
||||||
|
### debian stretch
|
||||||
|
|
||||||
|
The configuration for a debian stretch container is the same, except the the file
|
||||||
|
`/etc/network/interfaces` will also describe eth0, but you only have to add the
|
||||||
|
description for eth1.
|
||||||
|
|
||||||
|
### the /etc/hosts file
|
||||||
|
|
||||||
|
Once you assign the containers static ip addresses for their *eth1*
|
||||||
|
interfaces, you can use the `/etc/hosts` file on each container to make them
|
||||||
|
aware of where the other containers and the host machine are.
|
||||||
|
|
||||||
|
For instance, if you want the container *quick-joey* to talk directly
|
||||||
|
to the host machine, which will be at the ip address of *lxdbr1*, start a shell
|
||||||
|
on the container *quick-joey*
|
||||||
|
|
||||||
|
```bash
|
||||||
|
lxc exec quick-joey bash
|
||||||
|
```
|
||||||
|
|
||||||
|
and edit `/etc/hosts`
|
||||||
|
|
||||||
|
```conf
|
||||||
|
# /etc/hosts
|
||||||
|
10.151.18.1 mothership
|
||||||
|
```
|
||||||
|
|
||||||
|
Of you have a container named *fat-cinderella*, that needs to be able to talk
|
||||||
|
directly *quick-joey*.
|
||||||
|
|
||||||
|
```bash
|
||||||
|
lxc exec fat-cinderella bash
|
||||||
|
vim /etc/hosts
|
||||||
|
```
|
||||||
|
|
||||||
|
```conf
|
||||||
|
# /etc/hosts
|
||||||
|
10.151.18.123 quick-joey
|
||||||
|
```
|
||||||
|
|
||||||
|
etcetera
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
@ -4,6 +4,7 @@ theme: readthedocs
|
|||||||
|
|
||||||
pages:
|
pages:
|
||||||
- 'Home': index.md
|
- 'Home': index.md
|
||||||
|
- 'LXD Container Home Server Networking For Dummies': lxd_container_home_server_networking_for_dummies.md
|
||||||
- 'Serve And Share Apps From Your Phone With Fdroid': serve_and_share_apps_from_your_phone_with_fdroid.md
|
- 'Serve And Share Apps From Your Phone With Fdroid': serve_and_share_apps_from_your_phone_with_fdroid.md
|
||||||
- 'Nspawn': nspawn.md
|
- 'Nspawn': nspawn.md
|
||||||
- 'Mastodon on Arch': mastodon_on_arch.md
|
- 'Mastodon on Arch': mastodon_on_arch.md
|
||||||
|
|||||||
@ -54,6 +54,11 @@
|
|||||||
|
|
||||||
<li class="toctree-l1">
|
<li class="toctree-l1">
|
||||||
|
|
||||||
|
<a class="" href="../lxd_container_home_server_networking_for_dummies/">LXD Container Home Server Networking For Dummies</a>
|
||||||
|
</li>
|
||||||
|
|
||||||
|
<li class="toctree-l1">
|
||||||
|
|
||||||
<a class="" href="../serve_and_share_apps_from_your_phone_with_fdroid/">Serve And Share Apps From Your Phone With Fdroid</a>
|
<a class="" href="../serve_and_share_apps_from_your_phone_with_fdroid/">Serve And Share Apps From Your Phone With Fdroid</a>
|
||||||
</li>
|
</li>
|
||||||
|
|
||||||
|
|||||||
@ -54,6 +54,11 @@
|
|||||||
|
|
||||||
<li class="toctree-l1">
|
<li class="toctree-l1">
|
||||||
|
|
||||||
|
<a class="" href="../lxd_container_home_server_networking_for_dummies/">LXD Container Home Server Networking For Dummies</a>
|
||||||
|
</li>
|
||||||
|
|
||||||
|
<li class="toctree-l1">
|
||||||
|
|
||||||
<a class="" href="../serve_and_share_apps_from_your_phone_with_fdroid/">Serve And Share Apps From Your Phone With Fdroid</a>
|
<a class="" href="../serve_and_share_apps_from_your_phone_with_fdroid/">Serve And Share Apps From Your Phone With Fdroid</a>
|
||||||
</li>
|
</li>
|
||||||
|
|
||||||
|
|||||||
@ -54,6 +54,11 @@
|
|||||||
|
|
||||||
<li class="toctree-l1">
|
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|
||||||
|
|
||||||
|
<a class="" href="../lxd_container_home_server_networking_for_dummies/">LXD Container Home Server Networking For Dummies</a>
|
||||||
|
</li>
|
||||||
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|
||||||
|
<li class="toctree-l1">
|
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||||||
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|
<a class="" href="../serve_and_share_apps_from_your_phone_with_fdroid/">Serve And Share Apps From Your Phone With Fdroid</a>
|
||||||
</li>
|
</li>
|
||||||
|
|
||||||
|
|||||||
@ -54,6 +54,11 @@
|
|||||||
|
|
||||||
<li class="toctree-l1">
|
<li class="toctree-l1">
|
||||||
|
|
||||||
|
<a class="" href="../lxd_container_home_server_networking_for_dummies/">LXD Container Home Server Networking For Dummies</a>
|
||||||
|
</li>
|
||||||
|
|
||||||
|
<li class="toctree-l1">
|
||||||
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|
||||||
<a class="" href="../serve_and_share_apps_from_your_phone_with_fdroid/">Serve And Share Apps From Your Phone With Fdroid</a>
|
<a class="" href="../serve_and_share_apps_from_your_phone_with_fdroid/">Serve And Share Apps From Your Phone With Fdroid</a>
|
||||||
</li>
|
</li>
|
||||||
|
|
||||||
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|||||||
@ -54,6 +54,11 @@
|
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|
||||||
<li class="toctree-l1">
|
<li class="toctree-l1">
|
||||||
|
|
||||||
|
<a class="" href="../lxd_container_home_server_networking_for_dummies/">LXD Container Home Server Networking For Dummies</a>
|
||||||
|
</li>
|
||||||
|
|
||||||
|
<li class="toctree-l1">
|
||||||
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|
||||||
<a class="" href="../serve_and_share_apps_from_your_phone_with_fdroid/">Serve And Share Apps From Your Phone With Fdroid</a>
|
<a class="" href="../serve_and_share_apps_from_your_phone_with_fdroid/">Serve And Share Apps From Your Phone With Fdroid</a>
|
||||||
</li>
|
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|
||||||
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|
||||||
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|||||||
@ -66,6 +66,11 @@
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||||||
<li class="toctree-l1">
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<li class="toctree-l1">
|
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|
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<a class="" href="lxd_container_home_server_networking_for_dummies/">LXD Container Home Server Networking For Dummies</a>
|
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</li>
|
||||||
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||||||
|
<li class="toctree-l1">
|
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|
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<a class="" href="serve_and_share_apps_from_your_phone_with_fdroid/">Serve And Share Apps From Your Phone With Fdroid</a>
|
<a class="" href="serve_and_share_apps_from_your_phone_with_fdroid/">Serve And Share Apps From Your Phone With Fdroid</a>
|
||||||
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|
||||||
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|
||||||
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|||||||
<p>Obviously, the commit history will reflect the time when these documents are written.</p>
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<p>Obviously, the commit history will reflect the time when these documents are written.</p>
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||||||
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|
||||||
|
<li><a href="lxd_container_home_server_networking_for_dummies/">LXD Container Home Server Networking For Dummies</a></li>
|
||||||
<li><a href="nspawn/">Nspawn Containers</a></li>
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<li><a href="nspawn/">Nspawn Containers</a></li>
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<li><a href="debian_nspawn_container_on_arch_for_testing_apache_configurations/">Debian Nspawn Container On Arch For Testing Apache Configurations</a></li>
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<h1 id="lxd-container-home-server-networking-for-dummies">LXD Container Home Server Networking For Dummies</h1>
|
||||||
|
<h2 id="why">Why?</h2>
|
||||||
|
<p>If you're going to operate a fleet of LXD containers for home
|
||||||
|
entertainment, you probably want some of them exposed with their
|
||||||
|
own ip addresses on your home network, so that you can use them
|
||||||
|
as containerized servers for various applications.</p>
|
||||||
|
<p>Others containers, you might want to be inaccessable from the lan,
|
||||||
|
in a natted subnet, where they can solicit connections to the
|
||||||
|
outside world from within their natted subnet, but are not addressable
|
||||||
|
from the outside. A database server that you connect a web app to, for
|
||||||
|
instance, or a web app that you have a reverse proxy in front of.</p>
|
||||||
|
<p>But these are two separate address spaces, so ideally all of the containers
|
||||||
|
would have a second interface of their own, by which they could connect
|
||||||
|
to a third network, that would be a private network that all of the containers
|
||||||
|
can use to talk directly to each other (or the host machine).</p>
|
||||||
|
<p>It's pretty straightforward, you just have to glue all the pieces together.</p>
|
||||||
|
<h2 id="three-part-overview">Three Part Overview.</h2>
|
||||||
|
<ol>
|
||||||
|
<li>
|
||||||
|
<p>Define and create some bridges. </p>
|
||||||
|
</li>
|
||||||
|
<li>
|
||||||
|
<p>Define profiles that combine the network
|
||||||
|
interfaces in different combinations. In addition to two
|
||||||
|
bridges you will have a macvlan with which to expose the containers
|
||||||
|
that you want exposed, but the macvlan doesn't come into
|
||||||
|
play until here in step two when you define profiles. </p>
|
||||||
|
</li>
|
||||||
|
<li>
|
||||||
|
<p>Assign each container which profile it should use,
|
||||||
|
and then configure the containers to use the included
|
||||||
|
network interfaces correctly. </p>
|
||||||
|
</li>
|
||||||
|
</ol>
|
||||||
|
<h2 id="build-sum-moar-bridges">Build Sum Moar Bridges</h2>
|
||||||
|
<p>The containers will all have two network interfaces from
|
||||||
|
their own internal point of view, <em>eth0</em> and <em>eth1</em>. </p>
|
||||||
|
<p>In this
|
||||||
|
scheme we create a bridge for a natted subnet and a bridge for
|
||||||
|
a non-natted subnet. All of the containers will connect to the
|
||||||
|
non-natted subnet on their second interface, <em>eth1</em>, and some
|
||||||
|
of the containers will connect to the natted subnet on their
|
||||||
|
first interface <em>eth0</em>. The containers that don't connect
|
||||||
|
to the natted subnet will instead connect to a macvlan
|
||||||
|
on their first interface <em>eth0</em>, but that isn't part of this
|
||||||
|
step.</p>
|
||||||
|
<h3 id="bridge-for-a-natted-subnet">bridge for a natted subnet</h3>
|
||||||
|
<p>If you haven't used lxd before, you'll want to run the command <code>lxd init</code>.
|
||||||
|
By default this creates exactly the bridge we want, called <em>lxdbr0</em>.</p>
|
||||||
|
<p>Otherwise you would use the following command to create <em>lxdbr0</em>.</p>
|
||||||
|
<pre><code class="bash">lxc network create lxdbr0
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>To generate a table of all the existing interfaces.</p>
|
||||||
|
<pre><code class="bash">lxd network list
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>This bridge is for our natted subnet, so we just want to go with
|
||||||
|
the default configuration.</p>
|
||||||
|
<pre><code class="bash">lxc network show lxdbr0
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>This cats a yaml file where you can see the randomly
|
||||||
|
generated network for <em>lxdbr0</em>.</p>
|
||||||
|
<pre><code class="yaml">config:
|
||||||
|
ipv4.address: 10.99.153.1/24
|
||||||
|
ipv4.nat: "true"
|
||||||
|
ipv6.address: fd42:211e:e008:954b::1/64
|
||||||
|
ipv6.nat: "true"
|
||||||
|
description: ""
|
||||||
|
name: lxdbr0
|
||||||
|
type: bridge
|
||||||
|
used_by: []
|
||||||
|
managed: true
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<h3 id="bridge-for-a-non-natted-subnet">bridge for a non-natted subnet</h3>
|
||||||
|
<p>Create <em>lxdbr1</em></p>
|
||||||
|
<pre><code class="bash">lxc network create lxdbr1
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>Use the following commands to remove nat from
|
||||||
|
lxdbr1.</p>
|
||||||
|
<pre><code class="bash">lxc network set lxdbr1 ipv4.nat false
|
||||||
|
lxc network set lxdbr1 ipv6.nat false
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>Of if you use this next command, your favourite
|
||||||
|
text editor will pop open, preloaded with the complete yaml file
|
||||||
|
and you can edit the configuration there.</p>
|
||||||
|
<pre><code class="bash">lxc network edit lxdbr1
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>Either way you're looking for a result such as the following.
|
||||||
|
Notice that the randomly generated address space is different
|
||||||
|
that the one for <em>lxdbr0</em>, and that the *nat keys are set
|
||||||
|
to "false".</p>
|
||||||
|
<pre><code class="yaml">config:
|
||||||
|
ipv4.address: 10.151.18.1/24
|
||||||
|
ipv4.nat: "false"
|
||||||
|
ipv6.address: fd42:89d4:f465:1b20::1/64
|
||||||
|
ipv6.nat: "false"
|
||||||
|
description: ""
|
||||||
|
name: lxdbr1
|
||||||
|
type: bridge
|
||||||
|
used_by: []
|
||||||
|
managed: true
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<h2 id="profiles">Profiles</h2>
|
||||||
|
<h3 id="recycle-the-default">recycle the default</h3>
|
||||||
|
<p>When you first ran <code>lxd init</code>, that created a default profile.
|
||||||
|
Confirm with the following.</p>
|
||||||
|
<pre><code class="bash">lxc profile list
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>To see what the default profile looks like.</p>
|
||||||
|
<pre><code class="bash">lxc profile show default
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<pre><code class="yaml">config:
|
||||||
|
environment.http_proxy: ""
|
||||||
|
security.privileged: "true"
|
||||||
|
user.network_mode: ""
|
||||||
|
description: Default LXD profile
|
||||||
|
devices:
|
||||||
|
eth0:
|
||||||
|
nictype: bridged
|
||||||
|
parent: lxdbr0
|
||||||
|
type: nic
|
||||||
|
root:
|
||||||
|
path: /
|
||||||
|
pool: default
|
||||||
|
type: disk
|
||||||
|
name: default
|
||||||
|
used_by: []
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<h3 id="profile-the-natted">profile the natted</h3>
|
||||||
|
<p>The easiest way to create a new profile is start by copying another one.</p>
|
||||||
|
<pre><code class="bash">lxc profile copy default natted
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>edit the new <em>natted</em> profile</p>
|
||||||
|
<pre><code class="bash">lxc profile edit natted
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>And add an <em>eth1</em> interface attached to <em>lxdbr1</em>. <em>eth0</em> and <em>eth1</em> will
|
||||||
|
be the interfaces visible from the container's point of view.</p>
|
||||||
|
<pre><code class="yaml">config:
|
||||||
|
environment.http_proxy: ""
|
||||||
|
security.privileged: "true"
|
||||||
|
user.network_mode: ""
|
||||||
|
description: Natted LXD profile
|
||||||
|
devices:
|
||||||
|
eth0:
|
||||||
|
nictype: bridged
|
||||||
|
parent: lxdbr0
|
||||||
|
type: nic
|
||||||
|
eth1:
|
||||||
|
nictype: bridged
|
||||||
|
parent: lxdbr1
|
||||||
|
type: nic
|
||||||
|
root:
|
||||||
|
path: /
|
||||||
|
pool: default
|
||||||
|
type: disk
|
||||||
|
name: natted
|
||||||
|
used_by: []
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>Any container assigned to the <em>natted</em> profile, will have an interface <em>eth0</em> connected
|
||||||
|
to a natted subnet, and a second interface <em>eth1</em> connected to a non-natted subnet, with
|
||||||
|
a static ip on which it will be able to talk directly to the other containers and the host
|
||||||
|
machine.</p>
|
||||||
|
<h3 id="profile-the-exposed">profile the exposed</h3>
|
||||||
|
<p>Create the <em>exposed</em> profile</p>
|
||||||
|
<pre><code class="bash">lxc profile copy natted exposed
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>and edit the new <em>exposed</em> profile</p>
|
||||||
|
<pre><code class="bash">lxc profile edit exposed
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>change the nictype for <em>eth0</em> from <code>bridged</code> to <code>macvlan</code>, and the parent should be
|
||||||
|
the name of the physical ethernet connection on the host machine, instead of a bridge.</p>
|
||||||
|
<pre><code class="yaml">config:
|
||||||
|
environment.http_proxy: ""
|
||||||
|
security.privileged: "true"
|
||||||
|
user.network_mode: ""
|
||||||
|
description: Exposed LXD profile
|
||||||
|
devices:
|
||||||
|
eth0:
|
||||||
|
nictype: macvlan
|
||||||
|
parent: eno1
|
||||||
|
type: nic
|
||||||
|
eth1:
|
||||||
|
nictype: bridged
|
||||||
|
parent: lxdbr1
|
||||||
|
type: nic
|
||||||
|
root:
|
||||||
|
path: /
|
||||||
|
pool: default
|
||||||
|
type: disk
|
||||||
|
name: exposed
|
||||||
|
used_by: []
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>Any container assigned to the <em>exposed</em> profile, will have an interface <em>eth0</em> connected
|
||||||
|
to a macvlan, addressable from your lan, just like any other arbitrary computer on
|
||||||
|
your home network, and a second interface <em>eth1</em> connected to a non-natted subnet, with
|
||||||
|
a static ip on which it will be able to talk directly to the other containers and the host
|
||||||
|
machine.</p>
|
||||||
|
<h2 id="assign-containers-to-profiles-and-configure-them-to-connect-correctly">Assign Containers to Profiles and configure them to connect correctly.</h2>
|
||||||
|
<p>There are a lot of different ways that a Linux instance can solicit network services. So for
|
||||||
|
now I will just describe a method that will work here for a lxc container from ubuntu:16.04, as
|
||||||
|
well as a debian stretch container from images.linuxcontainers.org.</p>
|
||||||
|
<p>Start a new container and assign the profile. We'll use an arbitrary whimsical container name,
|
||||||
|
<em>quick-joey</em>. This process is the same for either the <em>natted</em> profile or the <em>exposed</em> profile.</p>
|
||||||
|
<pre><code class="bash">lxc init ubuntu:16.04 quick-joey
|
||||||
|
# assign the profile
|
||||||
|
lxc profile assign quick-joey exposed
|
||||||
|
# start quick-joey
|
||||||
|
lxc start quick-joey
|
||||||
|
# and start a bash shell
|
||||||
|
lxc exec quick-joey bash
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>You need to tell these containers how to connect to the non-natted subnet on <em>eth1</em>
|
||||||
|
With either an ubuntu:16.04 container, or a debian stretch container, for either the <em>natted</em> or
|
||||||
|
<em>exposed</em> profile, because of all the above configuration work they will automatically connect on
|
||||||
|
their <em>eth0</em> interfaces and be able to talk to the internet. You need to edit <code>/etc/network/interfaces</code>,
|
||||||
|
the main difference being what that file looks like before you edit it.</p>
|
||||||
|
<h3 id="ubuntu1604">ubuntu:16.04</h3>
|
||||||
|
<p>If you start a shell on an ubuntu:16.04 container, you see that <code>/etc/network/interfaces</code>
|
||||||
|
describes the loopback device for localhost, then sources <code>/etc/network/interfaces.d/*.cfg</code> where
|
||||||
|
some magical cloud-config jazz is going on. You just want to add a static ip description for <em>eth1</em>
|
||||||
|
to the file <code>/etc/network/interfaces</code>. And obviously take that the static ip address you assign is
|
||||||
|
unique and on the same subnet with <em>lxdbr1</em>.</p>
|
||||||
|
<p>Reminder: the address for <em>lxdbr1</em> is 10.151.18.1/24, but it will be different on your machine.</p>
|
||||||
|
<pre><code class="conf">auto lo
|
||||||
|
iface lo inet loopback
|
||||||
|
|
||||||
|
source /etc/network/interfaces.d/*.cfg
|
||||||
|
# what you add goes below here
|
||||||
|
auto eth1
|
||||||
|
iface eth1 inet static
|
||||||
|
address 10.151.18.123
|
||||||
|
netmask 255.255.255.0
|
||||||
|
broadcast 255.255.255.255
|
||||||
|
network 10.151.18.0
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<h3 id="debian-stretch">debian stretch</h3>
|
||||||
|
<p>The configuration for a debian stretch container is the same, except the the file
|
||||||
|
<code>/etc/network/interfaces</code> will also describe eth0, but you only have to add the
|
||||||
|
description for eth1.</p>
|
||||||
|
<h3 id="the-etchosts-file">the /etc/hosts file</h3>
|
||||||
|
<p>Once you assign the containers static ip addresses for their <em>eth1</em>
|
||||||
|
interfaces, you can use the <code>/etc/hosts</code> file on each container to make them
|
||||||
|
aware of where the other containers and the host machine are.</p>
|
||||||
|
<p>For instance, if you want the container <em>quick-joey</em> to talk directly
|
||||||
|
to the host machine, which will be at the ip address of <em>lxdbr1</em>, start a shell
|
||||||
|
on the container <em>quick-joey</em></p>
|
||||||
|
<pre><code class="bash">lxc exec quick-joey bash
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>and edit <code>/etc/hosts</code></p>
|
||||||
|
<pre><code class="conf"># /etc/hosts
|
||||||
|
10.151.18.1 mothership
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>Of you have a container named <em>fat-cinderella</em>, that needs to be able to talk
|
||||||
|
directly <em>quick-joey</em>.</p>
|
||||||
|
<pre><code class="bash">lxc exec fat-cinderella bash
|
||||||
|
vim /etc/hosts
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<pre><code class="conf"># /etc/hosts
|
||||||
|
10.151.18.123 quick-joey
|
||||||
|
</code></pre>
|
||||||
|
|
||||||
|
<p>etcetera</p>
|
||||||
|
|
||||||
|
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|
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||||||
|
<lastmod>2017-07-21</lastmod>
|
||||||
<changefreq>daily</changefreq>
|
<changefreq>daily</changefreq>
|
||||||
</url>
|
</url>
|
||||||
|
|
||||||
@ -12,7 +20,7 @@
|
|||||||
|
|
||||||
<url>
|
<url>
|
||||||
<loc>/serve_and_share_apps_from_your_phone_with_fdroid/</loc>
|
<loc>/serve_and_share_apps_from_your_phone_with_fdroid/</loc>
|
||||||
<lastmod>2017-07-17</lastmod>
|
<lastmod>2017-07-21</lastmod>
|
||||||
<changefreq>daily</changefreq>
|
<changefreq>daily</changefreq>
|
||||||
</url>
|
</url>
|
||||||
|
|
||||||
@ -20,7 +28,7 @@
|
|||||||
|
|
||||||
<url>
|
<url>
|
||||||
<loc>/nspawn/</loc>
|
<loc>/nspawn/</loc>
|
||||||
<lastmod>2017-07-17</lastmod>
|
<lastmod>2017-07-21</lastmod>
|
||||||
<changefreq>daily</changefreq>
|
<changefreq>daily</changefreq>
|
||||||
</url>
|
</url>
|
||||||
|
|
||||||
@ -28,7 +36,7 @@
|
|||||||
|
|
||||||
<url>
|
<url>
|
||||||
<loc>/mastodon_on_arch/</loc>
|
<loc>/mastodon_on_arch/</loc>
|
||||||
<lastmod>2017-07-17</lastmod>
|
<lastmod>2017-07-21</lastmod>
|
||||||
<changefreq>daily</changefreq>
|
<changefreq>daily</changefreq>
|
||||||
</url>
|
</url>
|
||||||
|
|
||||||
@ -36,7 +44,7 @@
|
|||||||
|
|
||||||
<url>
|
<url>
|
||||||
<loc>/debian_nspawn_container_on_arch_for_testing_apache_configurations/</loc>
|
<loc>/debian_nspawn_container_on_arch_for_testing_apache_configurations/</loc>
|
||||||
<lastmod>2017-07-17</lastmod>
|
<lastmod>2017-07-21</lastmod>
|
||||||
<changefreq>daily</changefreq>
|
<changefreq>daily</changefreq>
|
||||||
</url>
|
</url>
|
||||||
|
|
||||||
@ -44,7 +52,7 @@
|
|||||||
|
|
||||||
<url>
|
<url>
|
||||||
<loc>/dynamic_cacheing_nginx_reverse_proxy_for_pacman/</loc>
|
<loc>/dynamic_cacheing_nginx_reverse_proxy_for_pacman/</loc>
|
||||||
<lastmod>2017-07-17</lastmod>
|
<lastmod>2017-07-21</lastmod>
|
||||||
<changefreq>daily</changefreq>
|
<changefreq>daily</changefreq>
|
||||||
</url>
|
</url>
|
||||||
|
|
||||||
@ -52,7 +60,7 @@
|
|||||||
|
|
||||||
<url>
|
<url>
|
||||||
<loc>/freebsd_jails_on_freenas/</loc>
|
<loc>/freebsd_jails_on_freenas/</loc>
|
||||||
<lastmod>2017-07-17</lastmod>
|
<lastmod>2017-07-21</lastmod>
|
||||||
<changefreq>daily</changefreq>
|
<changefreq>daily</changefreq>
|
||||||
</url>
|
</url>
|
||||||
|
|
||||||
@ -60,7 +68,7 @@
|
|||||||
|
|
||||||
<url>
|
<url>
|
||||||
<loc>/arch_redis_nspawn/</loc>
|
<loc>/arch_redis_nspawn/</loc>
|
||||||
<lastmod>2017-07-17</lastmod>
|
<lastmod>2017-07-21</lastmod>
|
||||||
<changefreq>daily</changefreq>
|
<changefreq>daily</changefreq>
|
||||||
</url>
|
</url>
|
||||||
|
|
||||||
@ -68,7 +76,7 @@
|
|||||||
|
|
||||||
<url>
|
<url>
|
||||||
<loc>/arch_postgresql_nspawn/</loc>
|
<loc>/arch_postgresql_nspawn/</loc>
|
||||||
<lastmod>2017-07-17</lastmod>
|
<lastmod>2017-07-21</lastmod>
|
||||||
<changefreq>daily</changefreq>
|
<changefreq>daily</changefreq>
|
||||||
</url>
|
</url>
|
||||||
|
|
||||||
@ -76,7 +84,7 @@
|
|||||||
|
|
||||||
<url>
|
<url>
|
||||||
<loc>/self_signed_certs/</loc>
|
<loc>/self_signed_certs/</loc>
|
||||||
<lastmod>2017-07-17</lastmod>
|
<lastmod>2017-07-21</lastmod>
|
||||||
<changefreq>daily</changefreq>
|
<changefreq>daily</changefreq>
|
||||||
</url>
|
</url>
|
||||||
|
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user