haccfiles/services/tracktrain.nix

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{ config, lib, pkgs, inputs, evalConfig, ... }:
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let
tracktrain-config = ''
dbstring: "dbname=tracktrain"
gtfs: ./gtfs.zip
warp:
port: 4000
login:
enable: true
url: https://login.infra4future.de
clientname: tracktrain
# clientsecret defined in env file
'';
in
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{
services.nginx.virtualHosts."tracktrain.ilztalbahn.eu" = {
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enableACME = true;
forceSSL = true;
locations."/" = {
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proxyPass = "http://192.168.42.41:4000";
proxyWebsockets = true;
extraConfig = ''
add_header 'Access-Control-Allow-Origin' '*' always;
'';
};
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# note: this shadows the /metrics endpoint of tracktrain
# in case you remove this, please consider putting something
# else here to keep it from being publicly scrapable
locations."/metrics/" = {
proxyPass = "http://192.168.42.41:2342";
proxyWebsockets = true;
extraConfig = ''
rewrite ^/metrics/(.*) /$1 break;
'';
};
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};
containers.tracktrain = {
privateNetwork = true;
hostAddress = "192.168.42.40";
localAddress = "192.168.42.41";
autoStart = true;
bindMounts = {
"/persist" = {
hostPath = "/persist/containers/tracktrain";
isReadOnly = false;
};
};
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path = (evalConfig {
hosts = { };
groups = { };
} ({ config, lib, pkgs, profiles, modules, sources, ... }: {
boot.isContainer = true;
networking.useDHCP = false;
users.users.root.hashedPassword = "";
system.stateVersion = "21.11";
imports = [ sources.nix-hexchen.nixosModules.profiles.nopersist ];
networking.firewall.enable = false;
networking.defaultGateway = {
address = "192.168.100.1";
interface = "eth0";
};
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users.users.tracktrain = {
group = "tracktrain";
isSystemUser = true;
};
users.groups.tracktrain = {};
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systemd.services.tracktrain = {
enable = true;
description = "tracks trains, hopefully";
wantedBy = [ "multi-user.target" ];
after = [ "network.target" ];
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serviceConfig = {
Type = "simple";
EnvironmentFile = "/persist/secrets.env";
User = "tracktrain";
Group = "tracktrain";
};
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path = [ pkgs.wget ];
script = ''
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mkdir -p /persist/tracktrain
cd /persist/tracktrain
ln -sf ${pkgs.writeText "tracktrain-config.yaml" tracktrain-config} config.yaml
wget "https://ilztalbahn.eu/wp-content/uploads/2020/07/gtfs.zip"
${pkgs.tracktrain}/bin/tracktrain +RTS -T
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'';
};
services.postgresql = {
enable = true;
ensureDatabases = [ "tracktrain" ];
ensureUsers = [ {
name = "tracktrain";
ensurePermissions = {
"DATABASE tracktrain" = "ALL PRIVILEGES";
};
} ];
authentication = ''
local all all trust
host all all 127.0.0.1/32 trust
'';
};
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services.prometheus = {
enable = true;
port = 9001;
scrapeConfigs = [ {
job_name = "tracktrain";
static_configs = [{
targets = [ "0.0.0.0:4000" ];
}];
} ];
};
services.grafana = {
enable = true;
settings.server = {
serve_from_sub_path = true;
domain = "tracktrain.ilztalbahn.eu";
root_url = "https://%(domain)s/metrics/";
http_port = 2342;
http_addr = "0.0.0.0";
};
settings."auth.generic_oauth" = {
name = "uffd";
enabled = true;
allow_sign_up = true;
empty_scopes = true;
client_id = "ilztalbahn-grafana";
client_secret = "\${GRAFANA_CLIENT_SECRET}";
auth_url = "https://login.infra4future.de/oauth2/authorize";
token_url = "https://login.infra4future.de/oauth2/token";
api_url = "https://login.infra4future.de/oauth2/userinfo";
};
# disables the default login screen. comment out if for some
# reason you do need it
settings.auth.oauth_auto_login = true;
settings.users.auto_assign_org_role = "Admin";
provision = {
enable = true;
datasources.settings.datasources = [ {
url = "http://localhost:9001";
type = "prometheus";
name = "prometheus";
} ];
};
};
systemd.services.grafana.serviceConfig.EnvironmentFile =
"/persist/secrets.env";
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services.coredns = {
enable = true;
config = ''
.:53 {
forward . 1.1.1.1
}
'';
};
})).config.system.build.toplevel;
};
}