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pkg/mesh,pkg/wireguard: allow DNS name endpoints

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This commit allows DNS names to be used when specifying the endpoint
for a node in the WireGuard mesh. This is useful in many scenarios, in
particular when operating an IoT device whose public IP is dynamic. This
change allows the administrator to use a dynamic DNS name in the node's
endpoint.

One of the side-effects of this change is that the WireGuard port can
now be specified individually for each node in the mesh, if the
administrator wishes to do so.

*Note*: this commit introduces a breaking change; the
`force-external-ip` node annotation has been removed; its functionality
has been ported over to the `force-endpoint` annotation. This annotation
is documented in the annotations.md file. The expected content of this
annotation is no longer a CIDR but rather a host:port. The host can be
either a DNS name or an IP.

Signed-off-by: Lucas Servén Marín <lserven@gmail.com>
This commit is contained in:
Lucas Servén Marín
2020-02-22 17:17:13 +01:00
parent 223b641ee1
commit aa376ff0d1
14 changed files with 658 additions and 149 deletions
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5
README.md
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@@ -57,8 +57,9 @@ Kilo allows the topology of the encrypted network to be completely customized.
### Step 4: ensure nodes have public IP
At least one node in each location must have a public IP address.
If the public IP address is not automatically configured on the node's Ethernet device, it can be manually specified using the [kilo.squat.ai/force-external-ip](./docs/annotations.md#force-external-ip) annotation.
At least one node in each location must have an IP address that is routable from the other locations.
If the locations are in different clouds or private networks, then this must be a public IP address.
If this IP address is not automatically configured on the node's Ethernet device, it can be manually specified using the [kilo.squat.ai/force-endpoint](./docs/annotations.md#force-endpoint) annotation.
### Step 5: install Kilo!