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Index ¶
Constants ¶
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Functions ¶
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Types ¶
type Server ¶
type Server struct {
*orchestrator.Orchestrator
}
func New ¶
func New(o *orchestrator.Orchestrator) *Server
New creates a new DNS service. The service helps applications find out the IP addresses of other satellites. It uses the custom (made up) "celestial." TLD. A satellite DNS record has the form [ID].[SHELL].celestial, where [ID] is the identifier and [SHELL] is the index of the shell of the satellite. That maps to an IP address. Additionally, ground station IP addresses can be determined with [NAME].gst.celestial, where NAME is the ground station name. Our DNS server supports only queries, only UDP (no DNSSEC), and only A records. This service relies on configuring systemd-resolved to use our DNS server for the celestial TLD.
func (*Server) Start ¶
Start starts our DNS service. We first check if systemd-resolved is available and panic otherwise. We then place a configuration file in /etc/systemd/resolved.conf.d/celestial.conf that contains the following:
```conf [Resolve] DNS=127.0.0.1:[port] Domains=~celestial DNSStubListener=no DNSStubListenerExtra=0.0.0.0:53 ```
We then restart systemd-resolved.
Source Files