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The server cannot change its port. Therefore we set two different ports. We also remove the redundant firewall tag
114 lines
3.8 KiB
Markdown
114 lines
3.8 KiB
Markdown
<!-- markdown-toc start - Don't edit this section. Run M-x markdown-toc-refresh-toc -->
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**Table of Contents**
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- [Motivation](#motivation)
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- [Install](#install)
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- [Clone the repo](#clone-the-repo)
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- [Build packages from submodule at `./innernet-src`](#build-binaries-from-submodule-at-innernet-src)
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- [Run the playbook](#run-the-playbook)
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# Motivation
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There is a need for some of our servers to connect to other IPv6-only hosts. Since this is not always possible without introducing major painpoints elsewhere, we simply create an internal WireGuard network so that the machines in question can communicate securely using IPv4.
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You can learn more about innernet by looking at its [source code](./innernet-src) or reading this informative [blog post](https://blog.tonari.no/introducing-innernet) of its creator.
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# Preparation
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## Requirements
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* A somewhat recent version of `ansible`
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* `git`
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## Clone the repo
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```bash
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git clone --recurse-submodules git@git.fsfe.org:fsfe-system-hackers/innernet-playbook.git
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cd innernet-playbook
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```
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# Deployment
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In the scope of this playbook and its roles, we have three different categories of computers:
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1. The innernet server, being the central connector of all innernet peers
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2. Automatically managed machines that are innernet peers, mostly VMs
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3. Manually managed peers, for example admins and other humans
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## Configure server and all clients
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Run the whole playbook to configure everything. For the innernet server and
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automatically managed machines, all will be handled. For the manually managed
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peers, you will be given an invitation file.
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```bash
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ansible-playbook deploy.yml
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```
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## Add a new machine
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In order to add e.g. a virtual machine to the networks, run these steps:
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1. In the inventory, add the `innernet_client` group to the host
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2. Run the playbook with `ansible-playbook -l newserver.org deploy.yml`
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This will configure both the necessary parts on the server and the new machine.
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## Add a new manually managed peer
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In order to add a new human or otherwise manually managed innernet peer, run
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these steps:
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1. In `all.yml`, add a new entry for `manual_peers`
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2. Run the playbook with `ansible-playbook -l innernet_server deploy.yml`
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3. Install innernet and import the invitation file on the new peer's computer
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(see below). They are in `roles/client/files/` then.
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### Distribute the invitation files
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Some invitation files are for humans, so you need to send these files to them
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securely. We suggest using someting like `wormohle`.
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```bash
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sudo apt install magic-wormhole
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cd roles/client/files
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wormhole send <name_of_peer>.toml
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```
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# Update
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Since [innernet](https://github.com/tonarino/innernet) is new software, it is
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not yet included in the Debian repositories. Thus, before running the playbook
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we need to build the `innernet` and `innernet-server` binaries.
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In order to switch to a newer version of innernet, run the following steps:
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1. Check out the desired tag in the `innernet-src` submodule
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2. Run the build script: `./build-debs.sh`
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3. Run the playbook with `ansible-playbook -t update deploy.yml`
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# Associations
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The different CIDRs can have [associations](https://github.com/tonarino/innernet#adding-associations-between-cidrs), e.g. so that admins can access
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machines, although they are not in the same subnet.
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These have to be configure by an admin!
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Currently, the `admins` CIDR is associated with all other CIDRs (i.e. `humans` >
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`others` and `machines`).
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# Ansible tags
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Some tags allow you to specify just certain operations. Here are the currently
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available ones:
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* `cidr`: configure CIDRs
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* `update`: update the innernet binaries
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* `listen_port`: edit/set the listen port between server and clients
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* `uninstall`: delete innernet configuration and packages from systems
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