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{ config, lib, pkgs, ... }:
with lib;
let
inherit (pkgs) glusterfs rsync;
tlsCmd = if (cfg.tlsSettings != null) then
''
mkdir -p /var/lib/glusterd
touch /var/lib/glusterd/secure-access
''
else
''
rm -f /var/lib/glusterd/secure-access
'';
restartTriggers = if (cfg.tlsSettings != null) then [
config.environment.etc."ssl/glusterfs.pem".source
config.environment.etc."ssl/glusterfs.key".source
config.environment.etc."ssl/glusterfs.ca".source
] else [];
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 = [];
};
tlsSettings = mkOption {
description = ''
Make the server communicate via TLS.
This means it will only connect to other gluster
servers having certificates signed by the same CA.
Enabling this will create a file <filename>/var/lib/glusterd/secure-access</filename>.
Disabling will delete this file again.
See also: https://gluster.readthedocs.io/en/latest/Administrator%20Guide/SSL/
'';
default = null;
type = types.nullOr (types.submodule {
options = {
tlsKeyPath = mkOption {
default = null;
type = types.str;
description = "Path to the private key used for TLS.";
};
tlsPem = mkOption {
default = null;
type = types.path;
description = "Path to the certificate used for TLS.";
};
caCert = mkOption {
default = null;
type = types.path;
description = "Path certificate authority used to sign the cluster certificates.";
};
};
});
};
};
};
###### implementation
config = mkIf cfg.enable {
environment.systemPackages = [ pkgs.glusterfs ];
services.rpcbind.enable = true;
environment.etc = mkIf (cfg.tlsSettings != null) {
"ssl/glusterfs.pem".source = cfg.tlsSettings.tlsPem;
"ssl/glusterfs.key".source = cfg.tlsSettings.tlsKeyPath;
"ssl/glusterfs.ca".source = cfg.tlsSettings.caCert;
};
systemd.services.glusterd = {
inherit restartTriggers;
description = "GlusterFS, a clustered file-system server";
wantedBy = [ "multi-user.target" ];
requires = [ "rpcbind.service" ];
after = [ "rpcbind.service" "network.target" "local-fs.target" ];
preStart = ''
install -m 0755 -d /var/log/glusterfs
''
# The copying of hooks is due to upstream bug https://bugzilla.redhat.com/show_bug.cgi?id=1452761
+ ''
mkdir -p /var/lib/glusterd/hooks/
${rsync}/bin/rsync -a ${glusterfs}/var/lib/glusterd/hooks/ /var/lib/glusterd/hooks/
${tlsCmd}
''
# `glusterfind` needs dirs that upstream installs at `make install` phase
# https://github.com/gluster/glusterfs/blob/v3.10.2/tools/glusterfind/Makefile.am#L16-L17
+ ''
mkdir -p /var/lib/glusterd/glusterfind/.keys
mkdir -p /var/lib/glusterd/hooks/1/delete/post/
'';
serviceConfig = {
Type="forking";
PIDFile="/run/glusterd.pid";
LimitNOFILE=65536;
ExecStart="${glusterfs}/sbin/glusterd -p /run/glusterd.pid --log-level=${cfg.logLevel} ${toString cfg.extraFlags}";
KillMode="process";
};
};
systemd.services.glustereventsd = {
inherit restartTriggers;
description = "Gluster Events Notifier";
wantedBy = [ "multi-user.target" ];
after = [ "syslog.target" "network.target" ];
serviceConfig = {
Type="simple";
Environment="PYTHONPATH=${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";
};
};
};
}
|