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

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.xtreemfs;
xtreemfs = pkgs.xtreemfs;
home = cfg.homeDir;
startupScript = class: configPath: pkgs.writeScript "xtreemfs-osd.sh" ''
#! ${pkgs.runtimeShell}
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JAVA_HOME="${pkgs.jdk}"
JAVADIR="${xtreemfs}/share/java"
JAVA_CALL="$JAVA_HOME/bin/java -ea -cp $JAVADIR/XtreemFS.jar:$JAVADIR/BabuDB.jar:$JAVADIR/Flease.jar:$JAVADIR/protobuf-java-2.5.0.jar:$JAVADIR/Foundation.jar:$JAVADIR/jdmkrt.jar:$JAVADIR/jdmktk.jar:$JAVADIR/commons-codec-1.3.jar"
$JAVA_CALL ${class} ${configPath}
'';
dirReplicationConfig = pkgs.writeText "xtreemfs-dir-replication-plugin.properties" ''
babudb.repl.backupDir = ${home}/server-repl-dir
plugin.jar = ${xtreemfs}/share/java/BabuDB_replication_plugin.jar
babudb.repl.dependency.0 = ${xtreemfs}/share/java/Flease.jar
${cfg.dir.replication.extraConfig}
'';
dirConfig = pkgs.writeText "xtreemfs-dir-config.properties" ''
uuid = ${cfg.dir.uuid}
listen.port = ${toString cfg.dir.port}
${optionalString (cfg.dir.address != "") "listen.address = ${cfg.dir.address}"}
http_port = ${toString cfg.dir.httpPort}
babudb.baseDir = ${home}/dir/database
babudb.logDir = ${home}/dir/db-log
babudb.sync = ${if cfg.dir.replication.enable then "FDATASYNC" else cfg.dir.syncMode}
${optionalString cfg.dir.replication.enable "babudb.plugin.0 = ${dirReplicationConfig}"}
${cfg.dir.extraConfig}
'';
mrcReplicationConfig = pkgs.writeText "xtreemfs-mrc-replication-plugin.properties" ''
babudb.repl.backupDir = ${home}/server-repl-mrc
plugin.jar = ${xtreemfs}/share/java/BabuDB_replication_plugin.jar
babudb.repl.dependency.0 = ${xtreemfs}/share/java/Flease.jar
${cfg.mrc.replication.extraConfig}
'';
mrcConfig = pkgs.writeText "xtreemfs-mrc-config.properties" ''
uuid = ${cfg.mrc.uuid}
listen.port = ${toString cfg.mrc.port}
${optionalString (cfg.mrc.address != "") "listen.address = ${cfg.mrc.address}"}
http_port = ${toString cfg.mrc.httpPort}
babudb.baseDir = ${home}/mrc/database
babudb.logDir = ${home}/mrc/db-log
babudb.sync = ${if cfg.mrc.replication.enable then "FDATASYNC" else cfg.mrc.syncMode}
${optionalString cfg.mrc.replication.enable "babudb.plugin.0 = ${mrcReplicationConfig}"}
${cfg.mrc.extraConfig}
'';
osdConfig = pkgs.writeText "xtreemfs-osd-config.properties" ''
uuid = ${cfg.osd.uuid}
listen.port = ${toString cfg.osd.port}
${optionalString (cfg.osd.address != "") "listen.address = ${cfg.osd.address}"}
http_port = ${toString cfg.osd.httpPort}
object_dir = ${home}/osd/
${cfg.osd.extraConfig}
'';
optionalDir = optionals cfg.dir.enable ["xtreemfs-dir.service"];
systemdOptionalDependencies = {
after = [ "network.target" ] ++ optionalDir;
wantedBy = [ "multi-user.target" ] ++ optionalDir;
};
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in
{
###### interface
options = {
services.xtreemfs = {
enable = mkEnableOption "XtreemFS";
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homeDir = mkOption {
default = "/var/lib/xtreemfs";
description = ''
XtreemFS home dir for the xtreemfs user.
'';
};
dir = {
enable = mkOption {
default = true;
description = ''
Whether to enable XtreemFS DIR service.
'';
};
uuid = mkOption {
example = "eacb6bab-f444-4ebf-a06a-3f72d7465e40";
description = ''
Must be set to a unique identifier, preferably a UUID according to
RFC 4122. UUIDs can be generated with `uuidgen` command, found in
the `utillinux` package.
'';
};
port = mkOption {
default = 32638;
description = ''
The port to listen on for incoming connections (TCP).
'';
};
address = mkOption {
example = "127.0.0.1";
default = "";
description = ''
If specified, it defines the interface to listen on. If not
specified, the service will listen on all interfaces (any).
'';
};
httpPort = mkOption {
default = 30638;
description = ''
Specifies the listen port for the HTTP service that returns the
status page.
'';
};
syncMode = mkOption {
default = "FSYNC";
example = "FDATASYNC";
description = ''
The sync mode influences how operations are committed to the disk
log before the operation is acknowledged to the caller.
-ASYNC mode the writes to the disk log are buffered in memory by the operating system. This is the fastest mode but will lead to data loss in case of a crash, kernel panic or power failure.
-SYNC_WRITE_METADATA opens the file with O_SYNC, the system will not buffer any writes. The operation will be acknowledged when data has been safely written to disk. This mode is slow but offers maximum data safety. However, BabuDB cannot influence the disk drive caches, this depends on the OS and hard disk model.
-SYNC_WRITE similar to SYNC_WRITE_METADATA but opens file with O_DSYNC which means that only the data is commit to disk. This can lead to some data loss depending on the implementation of the underlying file system. Linux does not implement this mode.
-FDATASYNC is similar to SYNC_WRITE but opens the file in asynchronous mode and calls fdatasync() after writing the data to disk.
-FSYNC is similar to SYNC_WRITE_METADATA but opens the file in asynchronous mode and calls fsync() after writing the data to disk.
For best throughput use ASYNC, for maximum data safety use FSYNC.
(If xtreemfs.dir.replication.enable is true then FDATASYNC is forced)
'';
};
extraConfig = mkOption {
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type = types.lines;
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default = "";
example = ''
# specify whether SSL is required
ssl.enabled = true
ssl.service_creds.pw = passphrase
ssl.service_creds.container = pkcs12
ssl.service_creds = /etc/xos/xtreemfs/truststore/certs/dir.p12
ssl.trusted_certs = /etc/xos/xtreemfs/truststore/certs/trusted.jks
ssl.trusted_certs.pw = jks_passphrase
ssl.trusted_certs.container = jks
'';
description = ''
Configuration of XtreemFS DIR service.
WARNING: configuration is saved as plaintext inside nix store.
For more options: http://www.xtreemfs.org/xtfs-guide-1.5.1/index.html
'';
};
replication = {
enable = mkEnableOption "XtreemFS DIR replication plugin";
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extraConfig = mkOption {
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type = types.lines;
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example = ''
# participants of the replication including this replica
babudb.repl.participant.0 = 192.168.0.10
babudb.repl.participant.0.port = 35676
babudb.repl.participant.1 = 192.168.0.11
babudb.repl.participant.1.port = 35676
babudb.repl.participant.2 = 192.168.0.12
babudb.repl.participant.2.port = 35676
# number of servers that at least have to be up to date
# To have a fault-tolerant system, this value has to be set to the
# majority of nodes i.e., if you have three replicas, set this to 2
# Please note that a setup with two nodes provides no fault-tolerance.
babudb.repl.sync.n = 2
# specify whether SSL is required
babudb.ssl.enabled = true
babudb.ssl.protocol = tlsv12
# server credentials for SSL handshakes
babudb.ssl.service_creds = /etc/xos/xtreemfs/truststore/certs/osd.p12
babudb.ssl.service_creds.pw = passphrase
babudb.ssl.service_creds.container = pkcs12
# trusted certificates for SSL handshakes
babudb.ssl.trusted_certs = /etc/xos/xtreemfs/truststore/certs/trusted.jks
babudb.ssl.trusted_certs.pw = jks_passphrase
babudb.ssl.trusted_certs.container = jks
babudb.ssl.authenticationWithoutEncryption = false
'';
description = ''
Configuration of XtreemFS DIR replication plugin.
WARNING: configuration is saved as plaintext inside nix store.
For more options: http://www.xtreemfs.org/xtfs-guide-1.5.1/index.html
'';
};
};
};
mrc = {
enable = mkOption {
default = true;
description = ''
Whether to enable XtreemFS MRC service.
'';
};
uuid = mkOption {
example = "eacb6bab-f444-4ebf-a06a-3f72d7465e41";
description = ''
Must be set to a unique identifier, preferably a UUID according to
RFC 4122. UUIDs can be generated with `uuidgen` command, found in
the `utillinux` package.
'';
};
port = mkOption {
default = 32636;
description = ''
The port to listen on for incoming connections (TCP).
'';
};
address = mkOption {
example = "127.0.0.1";
default = "";
description = ''
If specified, it defines the interface to listen on. If not
specified, the service will listen on all interfaces (any).
'';
};
httpPort = mkOption {
default = 30636;
description = ''
Specifies the listen port for the HTTP service that returns the
status page.
'';
};
syncMode = mkOption {
default = "FSYNC";
example = "FDATASYNC";
description = ''
The sync mode influences how operations are committed to the disk
log before the operation is acknowledged to the caller.
-ASYNC mode the writes to the disk log are buffered in memory by the operating system. This is the fastest mode but will lead to data loss in case of a crash, kernel panic or power failure.
-SYNC_WRITE_METADATA opens the file with O_SYNC, the system will not buffer any writes. The operation will be acknowledged when data has been safely written to disk. This mode is slow but offers maximum data safety. However, BabuDB cannot influence the disk drive caches, this depends on the OS and hard disk model.
-SYNC_WRITE similar to SYNC_WRITE_METADATA but opens file with O_DSYNC which means that only the data is commit to disk. This can lead to some data loss depending on the implementation of the underlying file system. Linux does not implement this mode.
-FDATASYNC is similar to SYNC_WRITE but opens the file in asynchronous mode and calls fdatasync() after writing the data to disk.
-FSYNC is similar to SYNC_WRITE_METADATA but opens the file in asynchronous mode and calls fsync() after writing the data to disk.
For best throughput use ASYNC, for maximum data safety use FSYNC.
(If xtreemfs.mrc.replication.enable is true then FDATASYNC is forced)
'';
};
extraConfig = mkOption {
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type = types.lines;
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example = ''
osd_check_interval = 300
no_atime = true
local_clock_renewal = 0
remote_time_sync = 30000
authentication_provider = org.xtreemfs.common.auth.NullAuthProvider
# shared secret between the MRC and all OSDs
capability_secret = iNG8UuQJrJ6XVDTe
dir_service.host = 192.168.0.10
dir_service.port = 32638
# if replication is enabled
dir_service.1.host = 192.168.0.11
dir_service.1.port = 32638
dir_service.2.host = 192.168.0.12
dir_service.2.port = 32638
# specify whether SSL is required
ssl.enabled = true
ssl.protocol = tlsv12
ssl.service_creds.pw = passphrase
ssl.service_creds.container = pkcs12
ssl.service_creds = /etc/xos/xtreemfs/truststore/certs/mrc.p12
ssl.trusted_certs = /etc/xos/xtreemfs/truststore/certs/trusted.jks
ssl.trusted_certs.pw = jks_passphrase
ssl.trusted_certs.container = jks
'';
description = ''
Configuration of XtreemFS MRC service.
WARNING: configuration is saved as plaintext inside nix store.
For more options: http://www.xtreemfs.org/xtfs-guide-1.5.1/index.html
'';
};
replication = {
enable = mkEnableOption "XtreemFS MRC replication plugin";
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extraConfig = mkOption {
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type = types.lines;
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example = ''
# participants of the replication including this replica
babudb.repl.participant.0 = 192.168.0.10
babudb.repl.participant.0.port = 35678
babudb.repl.participant.1 = 192.168.0.11
babudb.repl.participant.1.port = 35678
babudb.repl.participant.2 = 192.168.0.12
babudb.repl.participant.2.port = 35678
# number of servers that at least have to be up to date
# To have a fault-tolerant system, this value has to be set to the
# majority of nodes i.e., if you have three replicas, set this to 2
# Please note that a setup with two nodes provides no fault-tolerance.
babudb.repl.sync.n = 2
# specify whether SSL is required
babudb.ssl.enabled = true
babudb.ssl.protocol = tlsv12
# server credentials for SSL handshakes
babudb.ssl.service_creds = /etc/xos/xtreemfs/truststore/certs/osd.p12
babudb.ssl.service_creds.pw = passphrase
babudb.ssl.service_creds.container = pkcs12
# trusted certificates for SSL handshakes
babudb.ssl.trusted_certs = /etc/xos/xtreemfs/truststore/certs/trusted.jks
babudb.ssl.trusted_certs.pw = jks_passphrase
babudb.ssl.trusted_certs.container = jks
babudb.ssl.authenticationWithoutEncryption = false
'';
description = ''
Configuration of XtreemFS MRC replication plugin.
WARNING: configuration is saved as plaintext inside nix store.
For more options: http://www.xtreemfs.org/xtfs-guide-1.5.1/index.html
'';
};
};
};
osd = {
enable = mkOption {
default = true;
description = ''
Whether to enable XtreemFS OSD service.
'';
};
uuid = mkOption {
example = "eacb6bab-f444-4ebf-a06a-3f72d7465e42";
description = ''
Must be set to a unique identifier, preferably a UUID according to
RFC 4122. UUIDs can be generated with `uuidgen` command, found in
the `utillinux` package.
'';
};
port = mkOption {
default = 32640;
description = ''
The port to listen on for incoming connections (TCP and UDP).
'';
};
address = mkOption {
example = "127.0.0.1";
default = "";
description = ''
If specified, it defines the interface to listen on. If not
specified, the service will listen on all interfaces (any).
'';
};
httpPort = mkOption {
default = 30640;
description = ''
Specifies the listen port for the HTTP service that returns the
status page.
'';
};
extraConfig = mkOption {
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type = types.lines;
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example = ''
local_clock_renewal = 0
remote_time_sync = 30000
report_free_space = true
capability_secret = iNG8UuQJrJ6XVDTe
dir_service.host = 192.168.0.10
dir_service.port = 32638
# if replication is used
dir_service.1.host = 192.168.0.11
dir_service.1.port = 32638
dir_service.2.host = 192.168.0.12
dir_service.2.port = 32638
# specify whether SSL is required
ssl.enabled = true
ssl.service_creds.pw = passphrase
ssl.service_creds.container = pkcs12
ssl.service_creds = /etc/xos/xtreemfs/truststore/certs/osd.p12
ssl.trusted_certs = /etc/xos/xtreemfs/truststore/certs/trusted.jks
ssl.trusted_certs.pw = jks_passphrase
ssl.trusted_certs.container = jks
'';
description = ''
Configuration of XtreemFS OSD service.
WARNING: configuration is saved as plaintext inside nix store.
For more options: http://www.xtreemfs.org/xtfs-guide-1.5.1/index.html
'';
};
};
};
};
###### implementation
config = lib.mkIf cfg.enable {
environment.systemPackages = [ xtreemfs ];
users.users.xtreemfs =
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{ uid = config.ids.uids.xtreemfs;
description = "XtreemFS user";
createHome = true;
home = home;
};
users.groups.xtreemfs =
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{ gid = config.ids.gids.xtreemfs;
};
systemd.services.xtreemfs-dir = mkIf cfg.dir.enable {
description = "XtreemFS-DIR Server";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
serviceConfig = {
User = "xtreemfs";
ExecStart = "${startupScript "org.xtreemfs.dir.DIR" dirConfig}";
};
};
systemd.services.xtreemfs-mrc = mkIf cfg.mrc.enable ({
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description = "XtreemFS-MRC Server";
serviceConfig = {
User = "xtreemfs";
ExecStart = "${startupScript "org.xtreemfs.mrc.MRC" mrcConfig}";
};
} // systemdOptionalDependencies);
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systemd.services.xtreemfs-osd = mkIf cfg.osd.enable ({
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description = "XtreemFS-OSD Server";
serviceConfig = {
User = "xtreemfs";
ExecStart = "${startupScript "org.xtreemfs.osd.OSD" osdConfig}";
};
} // systemdOptionalDependencies);
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};
}