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|
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.mesos.master;
in {
options.services.mesos = {
master = {
enable = mkOption {
description = "Whether to enable the Mesos Master.";
default = false;
type = types.uniq types.bool;
};
port = mkOption {
description = "Mesos Master port";
default = 5050;
type = types.int;
};
zk = mkOption {
description = ''
ZooKeeper URL (used for leader election amongst masters).
May be one of:
zk://host1:port1,host2:port2,.../mesos
zk://username:password@host1:port1,host2:port2,.../mesos
'';
type = types.str;
};
workDir = mkOption {
description = "The Mesos work directory.";
default = "/var/lib/mesos/master";
type = types.str;
};
extraCmdLineOptions = mkOption {
description = ''
Extra command line options for Mesos Master.
See https://mesos.apache.org/documentation/latest/configuration/
'';
default = [ "" ];
type = types.listOf types.string;
example = [ "--credentials=VALUE" ];
};
quorum = mkOption {
description = ''
The size of the quorum of replicas when using 'replicated_log' based
registry. It is imperative to set this value to be a majority of
masters i.e., quorum > (number of masters)/2.
If 0 will fall back to --registry=in_memory.
'';
default = 0;
type = types.int;
};
logLevel = mkOption {
description = ''
The logging level used. Possible values:
'INFO', 'WARNING', 'ERROR'
'';
default = "INFO";
type = types.str;
};
};
};
config = mkIf cfg.enable {
systemd.services.mesos-master = {
description = "Mesos Master";
wantedBy = [ "multi-user.target" ];
after = [ "network-interfaces.target" ];
serviceConfig = {
ExecStart = ''
${pkgs.mesos}/bin/mesos-master \
--port=${toString cfg.port} \
--zk=${cfg.zk} \
${if cfg.quorum == 0 then "--registry=in_memory" else "--registry=replicated_log --quorum=${toString cfg.quorum}"} \
--work_dir=${cfg.workDir} \
--logging_level=${cfg.logLevel} \
${toString cfg.extraCmdLineOptions}
'';
Restart = "on-failure";
PermissionsStartOnly = true;
};
preStart = ''
mkdir -m 0700 -p ${cfg.workDir}
'';
};
};
}
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