infra/common/base-server.nix

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{ lib, pkgs, ... }: {
imports = [
./known-ssh-keys.nix
];
nixpkgs.overlays = import ../overlays;
nix.package = lib.mkDefault pkgs.lix;
services.openssh.enable = lib.mkForce true;
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networking.nftables.enable = true;
networking.firewall.enable = true;
networking.firewall.logRefusedConnections = false;
networking.firewall.logReversePathDrops = true;
services.nginx = {
recommendedOptimisation = lib.mkDefault true;
recommendedTlsSettings = lib.mkDefault true;
recommendedProxySettings = lib.mkDefault true;
recommendedGzipSettings = lib.mkDefault true;
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eventsConfig = ''
worker_connections 8192;
'';
appendConfig = ''
worker_rlimit_nofile 16384;
'';
};
nix.gc = {
automatic = true;
persistent = true;
dates = lib.mkDefault "daily";
options = "--delete-older-than 30d";
};
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services.journald.extraConfig = "SystemMaxUse=512M";
boot.kernelParams = [
"panic=30" "boot.panic_on_fail"
];
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boot.kernel.sysctl = {
# Set default TCP congestion control algorithm
"net.ipv4.tcp_congestion_control" = "bbr";
# Enable ECN
"net.ipv4.tcp_ecn" = 1;
# Enable TCP fast open
"net.ipv4.tcp_fastopen" = 3;
};
# reduce closure size, feel free to add your locale here
i18n.supportedLocales = [
"en_US.UTF-8/UTF-8"
"fr_FR.UTF-8/UTF-8"
];
time.timeZone = "UTC";
}