108 lines
		
	
	
		
			2.8 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
			
		
		
	
	
			108 lines
		
	
	
		
			2.8 KiB
		
	
	
	
		
			Nix
		
	
	
	
	
	
| { config, lib, pkgs, ... }:
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| 
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| with lib;
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| 
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| let
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|   cfg = config.services.restic.server;
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| in
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| {
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|   meta.maintainers = [ maintainers.bachp ];
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| 
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|   options.services.restic.server = {
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|     enable = mkEnableOption "Restic REST Server";
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| 
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|     listenAddress = mkOption {
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|       default = ":8000";
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|       example = "127.0.0.1:8080";
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|       type = types.str;
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|       description = "Listen on a specific IP address and port.";
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|     };
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| 
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|     dataDir = mkOption {
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|       default = "/var/lib/restic";
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|       type = types.path;
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|       description = "The directory for storing the restic repository.";
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|     };
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| 
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|     appendOnly = mkOption {
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|       default = false;
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|       type = types.bool;
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|       description = ''
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|         Enable append only mode.
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|         This mode allows creation of new backups but prevents deletion and modification of existing backups.
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|         This can be useful when backing up systems that have a potential of being hacked.
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|       '';
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|     };
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| 
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|     privateRepos = mkOption {
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|       default = false;
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|       type = types.bool;
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|       description = ''
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|         Enable private repos.
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|         Grants access only when a subdirectory with the same name as the user is specified in the repository URL.
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|       '';
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|     };
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| 
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|     prometheus = mkOption {
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|       default = false;
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|       type = types.bool;
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|       description = "Enable Prometheus metrics at /metrics.";
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|     };
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| 
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|     extraFlags = mkOption {
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|       type = types.listOf types.str;
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|       default = [];
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|       description = ''
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|         Extra commandline options to pass to Restic REST server.
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|       '';
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|     };
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| 
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|     package = mkOption {
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|       default = pkgs.restic-rest-server;
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|       defaultText = "pkgs.restic-rest-server";
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|       type = types.package;
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|       description = "Restic REST server package to use.";
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|     };
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|   };
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| 
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|   config = mkIf cfg.enable {
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|     systemd.services.restic-rest-server = {
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|       description = "Restic REST Server";
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|       after = [ "network.target" ];
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|       wantedBy = [ "multi-user.target" ];
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|       serviceConfig = {
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|         ExecStart = ''
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|           ${cfg.package}/bin/rest-server \
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|           --listen ${cfg.listenAddress} \
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|           --path ${cfg.dataDir} \
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|           ${optionalString cfg.appendOnly "--append-only"} \
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|           ${optionalString cfg.privateRepos "--private-repos"} \
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|           ${optionalString cfg.prometheus "--prometheus"} \
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|           ${escapeShellArgs cfg.extraFlags} \
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|         '';
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|         Type = "simple";
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|         User = "restic";
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|         Group = "restic";
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| 
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|         # Security hardening
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|         ReadWritePaths = [ cfg.dataDir ];
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|         PrivateTmp = true;
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|         ProtectSystem = "strict";
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|         ProtectKernelTunables = true;
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|         ProtectKernelModules = true;
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|         ProtectControlGroups = true;
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|         PrivateDevices = true;
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|       };
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|     };
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| 
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|     users.users.restic = {
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|       group = "restic";
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|       home = cfg.dataDir;
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|       createHome = true;
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|       uid = config.ids.uids.restic;
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|     };
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| 
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|     users.groups.restic.gid = config.ids.uids.restic;
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|   };
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| }
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