pyrox.dev
1{ config, lib, pkgs, ... }:
2
3with lib;
4
5let
6 cfg = config.services.mesos.master;
7
8in {
9
10 options.services.mesos = {
11
12 master = {
13 enable = mkOption {
14 description = "Whether to enable the Mesos Master.";
15 default = false;
16 type = types.bool;
17 };
18
19 port = mkOption {
20 description = "Mesos Master port";
21 default = 5050;
22 type = types.int;
23 };
24
25 zk = mkOption {
26 description = ''
27 ZooKeeper URL (used for leader election amongst masters).
28 May be one of:
29 zk://host1:port1,host2:port2,.../mesos
30 zk://username:password@host1:port1,host2:port2,.../mesos
31 '';
32 type = types.str;
33 };
34
35 workDir = mkOption {
36 description = "The Mesos work directory.";
37 default = "/var/lib/mesos/master";
38 type = types.str;
39 };
40
41 extraCmdLineOptions = mkOption {
42 description = ''
43 Extra command line options for Mesos Master.
44
45 See https://mesos.apache.org/documentation/latest/configuration/
46 '';
47 default = [ "" ];
48 type = types.listOf types.str;
49 example = [ "--credentials=VALUE" ];
50 };
51
52 quorum = mkOption {
53 description = ''
54 The size of the quorum of replicas when using 'replicated_log' based
55 registry. It is imperative to set this value to be a majority of
56 masters i.e., quorum > (number of masters)/2.
57
58 If 0 will fall back to --registry=in_memory.
59 '';
60 default = 0;
61 type = types.int;
62 };
63
64 logLevel = mkOption {
65 description = ''
66 The logging level used. Possible values:
67 'INFO', 'WARNING', 'ERROR'
68 '';
69 default = "INFO";
70 type = types.str;
71 };
72
73 };
74
75
76 };
77
78
79 config = mkIf cfg.enable {
80 systemd.services.mesos-master = {
81 description = "Mesos Master";
82 wantedBy = [ "multi-user.target" ];
83 after = [ "network-interfaces.target" ];
84 serviceConfig = {
85 ExecStart = ''
86 ${pkgs.mesos}/bin/mesos-master \
87 --port=${toString cfg.port} \
88 ${if cfg.quorum == 0
89 then "--registry=in_memory"
90 else "--zk=${cfg.zk} --registry=replicated_log --quorum=${toString cfg.quorum}"} \
91 --work_dir=${cfg.workDir} \
92 --logging_level=${cfg.logLevel} \
93 ${toString cfg.extraCmdLineOptions}
94 '';
95 Restart = "on-failure";
96 PermissionsStartOnly = true;
97 };
98 preStart = ''
99 mkdir -m 0700 -p ${cfg.workDir}
100 '';
101 };
102 };
103
104}
105