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MetaSchema� get_meta_doc)� PER_INSTANCEaI Wireguard module provides a dynamic interface for configuring
Wireguard (as a peer or server) in an easy way.
This module takes care of:
- writing interface configuration files
- enabling and starting interfaces
- installing wireguard-tools package
- loading wireguard kernel module
- executing readiness probes
What's a readiness probe?
The idea behind readiness probes is to ensure Wireguard connectivity
before continuing the cloud-init process. This could be useful if you
need access to specific services like an internal APT Repository Server
(e.g Landscape) to install/update packages.
Example:
An edge device can't access the internet but uses cloud-init modules which
will install packages (e.g landscape, packages, ubuntu_advantage). Those
modules will fail due to missing internet connection. The "wireguard" module
fixes that problem as it waits until all readinessprobes (which can be
arbitrary commands - e.g. checking if a proxy server is reachable over
Wireguard network) are finished before continuing the cloud-init
"config" stage.
.. note::
In order to use DNS with Wireguard you have to install ``resolvconf``
package or symlink it to systemd's ``resolvectl``, otherwise ``wg-quick``
commands will throw an error message that executable ``resolvconf`` is
missing which leads wireguard module to fail.
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config_path: /etc/wireguard/wg0.conf
content: |
[Interface]
PrivateKey = <private_key>
Address = <address>
[Peer]
PublicKey = <public_key>
Endpoint = <endpoint_ip>:<endpoint_ip_port>
AllowedIPs = <allowedip1>, <allowedip2>, ...
- name: wg1
config_path: /etc/wireguard/wg1.conf
content: |
[Interface]
PrivateKey = <private_key>
Address = <address>
[Peer]
PublicKey = <public_key>
Endpoint = <endpoint_ip>:<endpoint_ip_port>
AllowedIPs = <allowedip1>
readinessprobe:
- 'systemctl restart service'
- 'curl https://webhook.endpoint/example'
- 'nc -zv some-service-fqdn 443'
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