config/hosts/hel1-a/configuration.nix

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{
config,
pkgs,
lib,
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agenix,
myData,
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...
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}: {
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imports = [
./hardware-configuration.nix
./zfs.nix
];
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mj = {
stateVersion = "22.11";
timeZone = "UTC";
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base = {
zfs.enable = true;
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users.passwd = {
root.passwordFile = config.age.secrets.root-passwd-hash.path;
motiejus.passwordFile = config.age.secrets.motiejus-passwd-hash.path;
};
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initrd = {
enable = true;
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authorizedKeys =
(builtins.attrValues myData.people_pubkeys)
++ [myData.hosts."vno1-oh2.servers.jakst".publicKey];
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hostKeys = ["/etc/secrets/initrd/ssh_host_ed25519_key"];
};
snapshot = {
enable = true;
mountpoints = ["/var/lib" "/var/log"];
};
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zfsborg = {
enable = true;
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passwordPath = config.age.secrets.borgbackup-password.path;
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mountpoints = {
"/var/lib" = {
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repo = "zh2769@zh2769.rsync.net:hel1-a.servers.jakst-var_lib";
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paths = [
"/var/lib/.snapshot-latest/headscale"
"/var/lib/.snapshot-latest/matrix-synapse"
];
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backup_at = "*-*-* 00:05:00";
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};
"/var/log" = {
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repo = "zh2769@zh2769.rsync.net:hel1-a.servers.jakst-var_log";
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paths = ["/var/log/.snapshot-latest/caddy/"];
patterns = [
"+ /var/log/.snapshot-latest/caddy/access-jakstys.lt.log-*.zst"
"- *"
];
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backup_at = "*-*-* 00:01:00";
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};
};
};
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unitstatus = {
enable = true;
email = "motiejus+alerts@jakstys.lt";
};
};
services = {
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node_exporter.enable = true;
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headscale = {
enable = true;
clientOidcPath = config.age.secrets.headscale-client-oidc.path;
subnetCIDR = myData.tailscale_subnet.cidr;
};
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deployerbot = {
follower = {
enable = true;
uidgid = myData.uidgid.updaterbot-deployee;
publicKey = myData.hosts."vno1-oh2.servers.jakst".publicKey;
};
};
postfix = {
enable = true;
saslPasswdPath = config.age.secrets.sasl-passwd.path;
};
zfsunlock = {
enable = true;
targets."vno1-oh2.servers.jakst" = let
host = myData.hosts."vno1-oh2.servers.jakst";
in {
sshEndpoint = host.publicIP;
pingEndpoint = host.jakstIP;
remotePubkey = host.initrdPubKey;
pwFile = config.age.secrets.zfs-passphrase-vno1-oh2.path;
startAt = "*-*-* *:00/5:00";
};
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};
};
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};
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environment.systemPackages = with pkgs; [
nixos-option
graphicsmagick
];
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services = {
tailscale.enable = true;
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nsd = {
enable = true;
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interfaces = ["0.0.0.0" "::"];
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zones = {
"jakstys.lt.".data = myData.jakstysLTZone;
};
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};
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caddy = {
enable = true;
email = "motiejus+acme@jakstys.lt";
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virtualHosts."www.jakstys.lt".extraConfig = ''
redir https://jakstys.lt
'';
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virtualHosts."fwmine.jakstys.lt".extraConfig = ''
reverse_proxy fwmine.motiejus.jakst:8080
'';
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virtualHosts."jakstys.lt" = {
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logFormat = ''
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output file ${config.services.caddy.logDir}/access-jakstys.lt.log {
roll_disabled
}
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'';
extraConfig = ''
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header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"
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header /_/* Cache-Control "public, max-age=31536000, immutable"
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root * /var/www/jakstys.lt
file_server {
precompressed br gzip
}
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@matrixMatch {
path /.well-known/matrix/client
path /.well-known/matrix/server
}
header @matrixMatch Content-Type application/json
header @matrixMatch Access-Control-Allow-Origin *
header @matrixMatch Cache-Control "public, max-age=3600, immutable"
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handle /.well-known/matrix/client {
respond "{\"m.homeserver\": {\"base_url\": \"https://jakstys.lt\"}}" 200
}
handle /.well-known/matrix/server {
respond "{\"m.server\": \"jakstys.lt:443\"}" 200
}
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handle /_matrix/* {
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encode gzip
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reverse_proxy http://127.0.0.1:8008
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}
'';
};
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};
# TODO: app_service_config_files
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matrix-synapse = {
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enable = true;
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settings = {
server_name = "jakstys.lt";
admin_contact = "motiejus@jakstys.lt";
enable_registration = false;
report_stats = true;
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signing_key_path = "/run/matrix-synapse/jakstys_lt_signing_key";
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extraConfigFiles = ["/run/matrix-synapse/secrets.yaml"];
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log_config = pkgs.writeText "log.config" ''
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version: 1
formatters:
precise:
format: '%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - %(request)s - %(message)s'
handlers:
console:
class: logging.StreamHandler
formatter: precise
loggers:
synapse.storage.SQL:
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level: WARN
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root:
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level: ERROR
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handlers: [console]
disable_existing_loggers: false
'';
public_baseurl = "https://jakstys.lt/";
database.name = "sqlite3";
url_preview_enabled = false;
max_upload_size = "50M";
rc_messages_per_second = 0.2;
rc_message_burst_count = 10.0;
federation_rc_window_size = 1000;
federation_rc_sleep_limit = 10;
federation_rc_sleep_delay = 500;
federation_rc_reject_limit = 50;
federation_rc_concurrent = 3;
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allow_profile_lookup_over_federation = false;
thumbnail_sizes = [
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{
width = 32;
height = 32;
method = "crop";
}
{
width = 96;
height = 96;
method = "crop";
}
{
width = 320;
height = 240;
method = "scale";
}
{
width = 640;
height = 480;
method = "scale";
}
{
width = 800;
height = 600;
method = "scale";
}
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];
user_directory = {
enabled = true;
search_all_users = false;
prefer_local_users = true;
};
allow_device_name_lookup_over_federation = false;
email = {
smtp_host = "127.0.0.1";
smtp_port = 25;
notf_for_new_users = false;
notif_from = "Jakstys %(app)s homeserver <noreply@jakstys.lt>";
};
include_profile_data_on_invite = false;
password_config.enabled = true;
require_auth_for_profile_requests = true;
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};
};
logrotate = {
settings = {
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"/var/log/caddy/access-jakstys.lt.log" = {
rotate = 60;
frequency = "daily";
dateext = true;
dateyesterday = true;
compress = true;
compresscmd = "${pkgs.zstd}/bin/zstd";
compressext = ".zst";
compressoptions = "--long -19";
uncompresscmd = "${pkgs.zstd}/bin/unzstd";
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postrotate = "${pkgs.systemd}/bin/systemctl restart caddy";
};
};
};
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};
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networking = {
hostName = "hel1-a";
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domain = "servers.jakst";
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firewall = {
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allowedTCPPorts = [
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53
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80
443
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];
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allowedUDPPorts = [
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53
443
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41641 # tailscale
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];
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checkReversePath = "loose"; # for tailscale
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};
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};
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systemd.tmpfiles.rules = [
"d /run/matrix-synapse 0700 matrix-synapse matrix-synapse -"
];
systemd.services = {
matrix-synapse = let
# TODO https://github.com/NixOS/nixpkgs/pull/222336 replace with `preStart`
secretsScript = pkgs.writeShellScript "write-secrets" ''
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set -xeuo pipefail
umask 077
ln -sf ''${CREDENTIALS_DIRECTORY}/jakstys_lt_signing_key /run/matrix-synapse/jakstys_lt_signing_key
cat > /run/matrix-synapse/secrets.yaml <<EOF
registration_shared_secret: "$(cat ''${CREDENTIALS_DIRECTORY}/registration_shared_secret)"
macaroon_secret_key: "$(cat ''${CREDENTIALS_DIRECTORY}/macaroon_secret_key)"
EOF
'';
in {
serviceConfig.ExecStartPre = ["" secretsScript];
serviceConfig.LoadCredential = [
"jakstys_lt_signing_key:${config.age.secrets.synapse-jakstys-signing-key.path}"
"registration_shared_secret:${config.age.secrets.synapse-registration-shared-secret.path}"
"macaroon_secret_key:${config.age.secrets.synapse-macaroon-secret-key.path}"
];
};
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};
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}