371 lines
13 KiB
Nix
371 lines
13 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
ceph = pkgs.ceph;
|
|
cfg = config.services.ceph;
|
|
# function that translates "camelCaseOptions" to "camel case options", credits to tilpner in #nixos@freenode
|
|
translateOption = replaceStrings upperChars (map (s: " ${s}") lowerChars);
|
|
generateDaemonList = (daemonType: daemons: extraServiceConfig:
|
|
mkMerge (
|
|
map (daemon:
|
|
{ "ceph-${daemonType}-${daemon}" = generateServiceFile daemonType daemon cfg.global.clusterName ceph extraServiceConfig; }
|
|
) daemons
|
|
)
|
|
);
|
|
generateServiceFile = (daemonType: daemonId: clusterName: ceph: extraServiceConfig: {
|
|
enable = true;
|
|
description = "Ceph ${builtins.replaceStrings lowerChars upperChars daemonType} daemon ${daemonId}";
|
|
after = [ "network-online.target" "local-fs.target" "time-sync.target" ] ++ optional (daemonType == "osd") "ceph-mon.target";
|
|
wants = [ "network-online.target" "local-fs.target" "time-sync.target" ];
|
|
partOf = [ "ceph-${daemonType}.target" ];
|
|
wantedBy = [ "ceph-${daemonType}.target" ];
|
|
|
|
serviceConfig = {
|
|
LimitNOFILE = 1048576;
|
|
LimitNPROC = 1048576;
|
|
Environment = "CLUSTER=${clusterName}";
|
|
ExecReload = "${pkgs.coreutils}/bin/kill -HUP $MAINPID";
|
|
PrivateDevices = "yes";
|
|
PrivateTmp = "true";
|
|
ProtectHome = "true";
|
|
ProtectSystem = "full";
|
|
Restart = "on-failure";
|
|
StartLimitBurst = "5";
|
|
StartLimitInterval = "30min";
|
|
ExecStart = "${ceph.out}/bin/${if daemonType == "rgw" then "radosgw" else "ceph-${daemonType}"} -f --cluster ${clusterName} --id ${if daemonType == "rgw" then "client.${daemonId}" else daemonId} --setuser ceph --setgroup ceph";
|
|
} // extraServiceConfig
|
|
// optionalAttrs (daemonType == "osd") { ExecStartPre = "${ceph.out}/libexec/ceph/ceph-osd-prestart.sh --id ${daemonId} --cluster ${clusterName}"; };
|
|
} // optionalAttrs (builtins.elem daemonType [ "mds" "mon" "rgw" "mgr" ]) { preStart = ''
|
|
daemonPath="/var/lib/ceph/${if daemonType == "rgw" then "radosgw" else daemonType}/${clusterName}-${daemonId}"
|
|
if [ ! -d ''$daemonPath ]; then
|
|
mkdir -m 755 -p ''$daemonPath
|
|
chown -R ceph:ceph ''$daemonPath
|
|
fi
|
|
'';
|
|
} // optionalAttrs (daemonType == "osd") { path = [ pkgs.getopt ]; }
|
|
);
|
|
generateTargetFile = (daemonType:
|
|
{
|
|
"ceph-${daemonType}" = {
|
|
description = "Ceph target allowing to start/stop all ceph-${daemonType} services at once";
|
|
partOf = [ "ceph.target" ];
|
|
before = [ "ceph.target" ];
|
|
};
|
|
}
|
|
);
|
|
in
|
|
{
|
|
options.services.ceph = {
|
|
# Ceph has a monolithic configuration file but different sections for
|
|
# each daemon, a separate client section and a global section
|
|
enable = mkEnableOption "Ceph global configuration";
|
|
|
|
global = {
|
|
fsid = mkOption {
|
|
type = types.str;
|
|
example = ''
|
|
433a2193-4f8a-47a0-95d2-209d7ca2cca5
|
|
'';
|
|
description = ''
|
|
Filesystem ID, a generated uuid, its must be generated and set before
|
|
attempting to start a cluster
|
|
'';
|
|
};
|
|
|
|
clusterName = mkOption {
|
|
type = types.str;
|
|
default = "ceph";
|
|
description = ''
|
|
Name of cluster
|
|
'';
|
|
};
|
|
|
|
monInitialMembers = mkOption {
|
|
type = with types; nullOr commas;
|
|
default = null;
|
|
example = ''
|
|
node0, node1, node2
|
|
'';
|
|
description = ''
|
|
List of hosts that will be used as monitors at startup.
|
|
'';
|
|
};
|
|
|
|
monHost = mkOption {
|
|
type = with types; nullOr commas;
|
|
default = null;
|
|
example = ''
|
|
10.10.0.1, 10.10.0.2, 10.10.0.3
|
|
'';
|
|
description = ''
|
|
List of hostname shortnames/IP addresses of the initial monitors.
|
|
'';
|
|
};
|
|
|
|
maxOpenFiles = mkOption {
|
|
type = types.int;
|
|
default = 131072;
|
|
description = ''
|
|
Max open files for each OSD daemon.
|
|
'';
|
|
};
|
|
|
|
authClusterRequired = mkOption {
|
|
type = types.enum [ "cephx" "none" ];
|
|
default = "cephx";
|
|
description = ''
|
|
Enables requiring daemons to authenticate with eachother in the cluster.
|
|
'';
|
|
};
|
|
|
|
authServiceRequired = mkOption {
|
|
type = types.enum [ "cephx" "none" ];
|
|
default = "cephx";
|
|
description = ''
|
|
Enables requiring clients to authenticate with the cluster to access services in the cluster (e.g. radosgw, mds or osd).
|
|
'';
|
|
};
|
|
|
|
authClientRequired = mkOption {
|
|
type = types.enum [ "cephx" "none" ];
|
|
default = "cephx";
|
|
description = ''
|
|
Enables requiring the cluster to authenticate itself to the client.
|
|
'';
|
|
};
|
|
|
|
publicNetwork = mkOption {
|
|
type = with types; nullOr commas;
|
|
default = null;
|
|
example = ''
|
|
10.20.0.0/24, 192.168.1.0/24
|
|
'';
|
|
description = ''
|
|
A comma-separated list of subnets that will be used as public networks in the cluster.
|
|
'';
|
|
};
|
|
|
|
clusterNetwork = mkOption {
|
|
type = with types; nullOr commas;
|
|
default = null;
|
|
example = ''
|
|
10.10.0.0/24, 192.168.0.0/24
|
|
'';
|
|
description = ''
|
|
A comma-separated list of subnets that will be used as cluster networks in the cluster.
|
|
'';
|
|
};
|
|
};
|
|
|
|
mgr = {
|
|
enable = mkEnableOption "Ceph MGR daemon";
|
|
daemons = mkOption {
|
|
type = with types; listOf str;
|
|
default = [];
|
|
example = ''
|
|
[ "name1" "name2" ];
|
|
'';
|
|
description = ''
|
|
A list of names for manager daemons that should have a service created. The names correspond
|
|
to the id part in ceph i.e. [ "name1" ] would result in mgr.name1
|
|
'';
|
|
};
|
|
extraConfig = mkOption {
|
|
type = with types; attrsOf str;
|
|
default = {};
|
|
description = ''
|
|
Extra configuration to add to the global section for manager daemons.
|
|
'';
|
|
};
|
|
};
|
|
|
|
mon = {
|
|
enable = mkEnableOption "Ceph MON daemon";
|
|
daemons = mkOption {
|
|
type = with types; listOf str;
|
|
default = [];
|
|
example = ''
|
|
[ "name1" "name2" ];
|
|
'';
|
|
description = ''
|
|
A list of monitor daemons that should have a service created. The names correspond
|
|
to the id part in ceph i.e. [ "name1" ] would result in mon.name1
|
|
'';
|
|
};
|
|
extraConfig = mkOption {
|
|
type = with types; attrsOf str;
|
|
default = {};
|
|
description = ''
|
|
Extra configuration to add to the monitor section.
|
|
'';
|
|
};
|
|
};
|
|
|
|
osd = {
|
|
enable = mkEnableOption "Ceph OSD daemon";
|
|
daemons = mkOption {
|
|
type = with types; listOf str;
|
|
default = [];
|
|
example = ''
|
|
[ "name1" "name2" ];
|
|
'';
|
|
description = ''
|
|
A list of OSD daemons that should have a service created. The names correspond
|
|
to the id part in ceph i.e. [ "name1" ] would result in osd.name1
|
|
'';
|
|
};
|
|
extraConfig = mkOption {
|
|
type = with types; attrsOf str;
|
|
default = {
|
|
"osd journal size" = "10000";
|
|
"osd pool default size" = "3";
|
|
"osd pool default min size" = "2";
|
|
"osd pool default pg num" = "200";
|
|
"osd pool default pgp num" = "200";
|
|
"osd crush chooseleaf type" = "1";
|
|
};
|
|
description = ''
|
|
Extra configuration to add to the OSD section.
|
|
'';
|
|
};
|
|
};
|
|
|
|
mds = {
|
|
enable = mkEnableOption "Ceph MDS daemon";
|
|
daemons = mkOption {
|
|
type = with types; listOf str;
|
|
default = [];
|
|
example = ''
|
|
[ "name1" "name2" ];
|
|
'';
|
|
description = ''
|
|
A list of metadata service daemons that should have a service created. The names correspond
|
|
to the id part in ceph i.e. [ "name1" ] would result in mds.name1
|
|
'';
|
|
};
|
|
extraConfig = mkOption {
|
|
type = with types; attrsOf str;
|
|
default = {};
|
|
description = ''
|
|
Extra configuration to add to the MDS section.
|
|
'';
|
|
};
|
|
};
|
|
|
|
rgw = {
|
|
enable = mkEnableOption "Ceph RadosGW daemon";
|
|
daemons = mkOption {
|
|
type = with types; listOf str;
|
|
default = [];
|
|
example = ''
|
|
[ "name1" "name2" ];
|
|
'';
|
|
description = ''
|
|
A list of rados gateway daemons that should have a service created. The names correspond
|
|
to the id part in ceph i.e. [ "name1" ] would result in client.name1, radosgw daemons
|
|
aren't daemons to cluster in the sense that OSD, MGR or MON daemons are. They are simply
|
|
daemons, from ceph, that uses the cluster as a backend.
|
|
'';
|
|
};
|
|
};
|
|
|
|
client = {
|
|
enable = mkEnableOption "Ceph client configuration";
|
|
extraConfig = mkOption {
|
|
type = with types; attrsOf str;
|
|
default = {};
|
|
example = ''
|
|
{
|
|
# This would create a section for a radosgw daemon named node0 and related
|
|
# configuration for it
|
|
"client.radosgw.node0" = { "some config option" = "true"; };
|
|
};
|
|
'';
|
|
description = ''
|
|
Extra configuration to add to the client section. Configuration for rados gateways
|
|
would be added here, with their own sections, see example.
|
|
'';
|
|
};
|
|
};
|
|
};
|
|
|
|
config = mkIf config.services.ceph.enable {
|
|
assertions = [
|
|
{ assertion = cfg.global.fsid != "";
|
|
message = "fsid has to be set to a valid uuid for the cluster to function";
|
|
}
|
|
{ assertion = cfg.mgr.enable == true;
|
|
message = "ceph 12.x requires atleast 1 MGR daemon enabled for the cluster to function";
|
|
}
|
|
{ assertion = cfg.mon.enable == true -> cfg.mon.daemons != [];
|
|
message = "have to set id of atleast one MON if you're going to enable Monitor";
|
|
}
|
|
{ assertion = cfg.mds.enable == true -> cfg.mds.daemons != [];
|
|
message = "have to set id of atleast one MDS if you're going to enable Metadata Service";
|
|
}
|
|
{ assertion = cfg.osd.enable == true -> cfg.osd.daemons != [];
|
|
message = "have to set id of atleast one OSD if you're going to enable OSD";
|
|
}
|
|
{ assertion = cfg.mgr.enable == true -> cfg.mgr.daemons != [];
|
|
message = "have to set id of atleast one MGR if you're going to enable MGR";
|
|
}
|
|
];
|
|
|
|
warnings = optional (cfg.global.monInitialMembers == null)
|
|
''Not setting up a list of members in monInitialMembers requires that you set the host variable for each mon daemon or else the cluster won't function'';
|
|
|
|
environment.etc."ceph/ceph.conf".text = let
|
|
# Translate camelCaseOptions to the expected camel case option for ceph.conf
|
|
translatedGlobalConfig = mapAttrs' (name: value: nameValuePair (translateOption name) value) cfg.global;
|
|
# Merge the extraConfig set for mgr daemons, as mgr don't have their own section
|
|
globalAndMgrConfig = translatedGlobalConfig // optionalAttrs cfg.mgr.enable cfg.mgr.extraConfig;
|
|
# Remove all name-value pairs with null values from the attribute set to avoid making empty sections in the ceph.conf
|
|
globalConfig = mapAttrs' (name: value: nameValuePair (translateOption name) value) (filterAttrs (name: value: value != null) globalAndMgrConfig);
|
|
totalConfig = {
|
|
"global" = globalConfig;
|
|
} // optionalAttrs (cfg.mon.enable && cfg.mon.extraConfig != {}) { "mon" = cfg.mon.extraConfig; }
|
|
// optionalAttrs (cfg.mds.enable && cfg.mds.extraConfig != {}) { "mds" = cfg.mds.extraConfig; }
|
|
// optionalAttrs (cfg.osd.enable && cfg.osd.extraConfig != {}) { "osd" = cfg.osd.extraConfig; }
|
|
// optionalAttrs (cfg.client.enable && cfg.client.extraConfig != {}) cfg.client.extraConfig;
|
|
in
|
|
generators.toINI {} totalConfig;
|
|
|
|
users.users = singleton {
|
|
name = "ceph";
|
|
uid = config.ids.uids.ceph;
|
|
description = "Ceph daemon user";
|
|
};
|
|
|
|
users.groups = singleton {
|
|
name = "ceph";
|
|
gid = config.ids.gids.ceph;
|
|
};
|
|
|
|
systemd.services = let
|
|
services = []
|
|
++ optional cfg.mon.enable (generateDaemonList "mon" cfg.mon.daemons { RestartSec = "10"; })
|
|
++ optional cfg.mds.enable (generateDaemonList "mds" cfg.mds.daemons { StartLimitBurst = "3"; })
|
|
++ optional cfg.osd.enable (generateDaemonList "osd" cfg.osd.daemons { StartLimitBurst = "30"; RestartSec = "20s"; })
|
|
++ optional cfg.rgw.enable (generateDaemonList "rgw" cfg.rgw.daemons { })
|
|
++ optional cfg.mgr.enable (generateDaemonList "mgr" cfg.mgr.daemons { StartLimitBurst = "3"; });
|
|
in
|
|
mkMerge services;
|
|
|
|
systemd.targets = let
|
|
targets = [
|
|
{ "ceph" = { description = "Ceph target allowing to start/stop all ceph service instances at once"; }; }
|
|
] ++ optional cfg.mon.enable (generateTargetFile "mon")
|
|
++ optional cfg.mds.enable (generateTargetFile "mds")
|
|
++ optional cfg.osd.enable (generateTargetFile "osd")
|
|
++ optional cfg.rgw.enable (generateTargetFile "rgw")
|
|
++ optional cfg.mgr.enable (generateTargetFile "mgr");
|
|
in
|
|
mkMerge targets;
|
|
|
|
systemd.tmpfiles.rules = [
|
|
"d /run/ceph 0770 ceph ceph -"
|
|
];
|
|
};
|
|
}
|