blob: eb7b57800333ed4e9b2926015ec91129d499df9a (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.restic.server;
in
{
meta.maintainers = [ maintainers.bachp ];
options.services.restic.server = {
enable = mkEnableOption "Restic REST Server";
listenAddress = mkOption {
default = "8000";
example = "127.0.0.1:8080";
type = types.str;
description = "Listen on a specific IP address and port or unix socket.";
};
dataDir = mkOption {
default = "/var/lib/restic";
type = types.path;
description = "The directory for storing the restic repository.";
};
appendOnly = mkOption {
default = false;
type = types.bool;
description = ''
Enable append only mode.
This mode allows creation of new backups but prevents deletion and modification of existing backups.
This can be useful when backing up systems that have a potential of being hacked.
'';
};
privateRepos = mkOption {
default = false;
type = types.bool;
description = ''
Enable private repos.
Grants access only when a subdirectory with the same name as the user is specified in the repository URL.
'';
};
prometheus = mkOption {
default = false;
type = types.bool;
description = "Enable Prometheus metrics at /metrics.";
};
extraFlags = mkOption {
type = types.listOf types.str;
default = [];
description = ''
Extra commandline options to pass to Restic REST server.
'';
};
package = mkPackageOption pkgs "restic-rest-server" { };
};
config = mkIf cfg.enable {
assertions = [{
assertion = lib.substring 0 1 cfg.listenAddress != ":";
message = "The restic-rest-server now uses systemd socket activation, which expects only the Port number: services.restic.server.listenAddress = \"${lib.substring 1 6 cfg.listenAddress}\";";
}];
systemd.services.restic-rest-server = {
description = "Restic REST Server";
after = [ "network.target" "restic-rest-server.socket" ];
requires = [ "restic-rest-server.socket" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
ExecStart = ''
${cfg.package}/bin/rest-server \
--path ${cfg.dataDir} \
${optionalString cfg.appendOnly "--append-only"} \
${optionalString cfg.privateRepos "--private-repos"} \
${optionalString cfg.prometheus "--prometheus"} \
${escapeShellArgs cfg.extraFlags} \
'';
Type = "simple";
User = "restic";
Group = "restic";
# Security hardening
CapabilityBoundingSet = "";
LockPersonality = true;
MemoryDenyWriteExecute = true;
NoNewPrivileges = true;
PrivateNetwork = true;
PrivateTmp = true;
PrivateUsers = true;
ProtectClock = true;
ProtectHome = true;
ProtectHostname = true;
ProtectKernelLogs = true;
ProtectProc = "invisible";
ProtectSystem = "strict";
ProtectKernelTunables = true;
ProtectKernelModules = true;
ProtectControlGroups = true;
PrivateDevices = true;
ReadWritePaths = [ cfg.dataDir ];
RemoveIPC = true;
RestrictAddressFamilies = "none";
RestrictNamespaces = true;
RestrictRealtime = true;
RestrictSUIDSGID = true;
SystemCallArchitectures = "native";
SystemCallFilter = "@system-service";
UMask = 027;
};
};
systemd.sockets.restic-rest-server = {
listenStreams = [ cfg.listenAddress ];
wantedBy = [ "sockets.target" ];
};
systemd.tmpfiles.rules = mkIf cfg.privateRepos [
"f ${cfg.dataDir}/.htpasswd 0700 restic restic -"
];
users.users.restic = {
group = "restic";
home = cfg.dataDir;
createHome = true;
uid = config.ids.uids.restic;
};
users.groups.restic.gid = config.ids.uids.restic;
};
}
|
