nixpkgs/nixos/modules/services/network-filesystems/glusterfs.nix

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{ config, lib, pkgs, ... }:
with lib;
let
inherit (pkgs) glusterfs rsync;
cfg = config.services.glusterfs;
in
{
###### interface
options = {
services.glusterfs = {
enable = mkEnableOption "GlusterFS Daemon";
logLevel = mkOption {
type = types.enum ["DEBUG" "INFO" "WARNING" "ERROR" "CRITICAL" "TRACE" "NONE"];
description = "Log level used by the GlusterFS daemon";
default = "INFO";
};
extraFlags = mkOption {
type = types.listOf types.str;
description = "Extra flags passed to the GlusterFS daemon";
default = [];
};
};
};
###### implementation
config = mkIf cfg.enable {
environment.systemPackages = [ pkgs.glusterfs ];
services.rpcbind.enable = true;
systemd.services.glusterd = {
description = "GlusterFS, a clustered file-system server";
wantedBy = [ "multi-user.target" ];
requires = [ "rpcbind.service" ];
after = [ "rpcbind.service" "network.target" "local-fs.target" ];
before = [ "network-online.target" ];
# The copying of hooks is due to upstream bug https://bugzilla.redhat.com/show_bug.cgi?id=1452761
preStart = ''
install -m 0755 -d /var/log/glusterfs
mkdir -p /var/lib/glusterd/hooks/
${rsync}/bin/rsync -a ${glusterfs}/var/lib/glusterd/hooks/ /var/lib/glusterd/hooks/
'';
serviceConfig = {
Type="forking";
PIDFile="/run/glusterd.pid";
LimitNOFILE=65536;
ExecStart="${glusterfs}/sbin/glusterd -p /run/glusterd.pid --log-level=${cfg.logLevel} ${toString cfg.extraFlags}";
KillMode="process";
};
};
systemd.services.glustereventsd = {
description = "Gluster Events Notifier";
wantedBy = [ "multi-user.target" ];
after = [ "syslog.target" "network.target" ];
serviceConfig = {
Type="simple";
Environment="PYTHONPATH=${glusterfs}/usr/lib/python2.7/site-packages";
PIDFile="/run/glustereventsd.pid";
ExecStart="${glusterfs}/sbin/glustereventsd --pid-file /run/glustereventsd.pid";
ExecReload="/bin/kill -SIGUSR2 $MAINPID";
KillMode="control-group";
};
};
};
}