53b7313e71
Pandoc used the % in the first line to define the header for a generated PDF, we don't do that now so I removed the header. Signed-off-by: Wachtl Enterprises LLC <tyrolyean@escpe.net>
67 lines
2.5 KiB
Markdown
67 lines
2.5 KiB
Markdown
# Location
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The VM is running as srv.hc.it-syndikat.org in the hetzner cloud.
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# Maintainers
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- @dxld @lambda dns/VM Maintenance
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- @tyrolyean @minato: Mail services
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- @tyrolyean: Proxy services
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# Technical
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## Routing
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The server itself has IPv6 and IPv4 addresses from hetzner, which it uses to
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access (and be accessed by) the broader internet. It is connected to the ITS
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intranet via a wireguard tunnel using the 10.17.7.0/24 and
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2a0c:9a40:8070:70::/64 subnets. It can access internal services dual stack via
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this tunnel. The tunnel interface has a record at `srv.srv.it-syndikat.org`.
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## DNS
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SRV is one of our authoritative NSes, please see the
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[DNS master docs](../space/srv-acraze/dns.md) for further details.
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## mail server
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The system is running a postfix instance which solely acts as a relay for
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outbound mail traffic. All inbound mail traffic is being processed on
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`blackmail.srv.it-syndikat.org`. Postfix therefore only accepts mail inbound
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on the wg0 interface on port 25 and only from the server subnets.
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Traffic is relayed to and from this host to avoid mail being classified as spam
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due to the originating ip being a dynamic.
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## Proxy server
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The server utilizes a haproxy to redirect inbound traffic to backend servers.
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Services have been moved from `infectedmushroom.srv.it-syndikat.org` to this
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server on 2022-11-28, which effectively obsoletes infectedmushroom.
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Services have been migrated after a reboot of the machine managed to brick the
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snid proxy setup we previously had.
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If you would like to add a service which connects inbound via http/s, please
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add it to the haproxy config at `/etc/haproxy/haproxy.cfg`. Check wether the
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configuration is valid using the
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`sudo haproxy -c -V -f /etc/haproxy/haproxy.cfg` command.
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## NGINX
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The server also operates an NGINX webserver to host the `it-syndik.at` and
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`spaceapi.it-syndikat.org` domains. The former is merely used to redirect
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matrix to the correct subdomains whilest the latter is hosted there to
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achieve a better uptime (though that was up for debate at the time wether it
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was actually nescessary).
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After changes check wether the configuration you have produced is valid using
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the `sudo nginx -T` command.
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### SpaceAPI
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The server hosts the [API endpoints](https://git.it-syndikat.org/IT-Syndikat/ITSynOpen/src/branch/master/server)
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to read and update the [SpaceAPI](https://spaceapi.io/) status, as well as to
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handle the "spaceping".
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This service produces a hard dependency on php and php-fpm. Please don't remove
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those.
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