Garnet Configuration

How to Configure Garnet

The Garnet server (GarnetServer.exe) can be configured using a configuration file (e.g. garnet.conf or redis.conf), while command line arguments can be used to override any settings specified in the file. / Any settings not specified in either configuration file or command line arguments are set to default valued specified in the defaults.conf file (path to this file can be overridden via the command line arguments).

Garnet currently supports two configuration file formats:

1. The garnet.conf file format (default) - a JSON-formatted collection of settings
2. The redis.conf file format - a collection of settings in the Redis configuration file format:

   keyword argument1 argument2 argument3 ... argumentN
   See Redis docs for reference./ Important: Not all redis.conf keywords are supported in Garnet. In order to have full configuration settings coverage, use the garnet.conf format.

Specifying a configuration file path (and a default file path) can be done via the command line parameters./

1. For garnet.conf:

   GarnetServer.exe --config-import-path <file-path>
2. For redis.conf:

   GarnetServer.exe --config-import-path <file-path> --config-import-format RedisConf

Note: To change the path (and/or format) of the defaults configuration file, use the config-default-import-path and config-default-import-format keywords respectively.

garnet.conf

The default configuration file format for Garnet, which supports the full-range of configurable Garnet settings./ garnet.conf is a JSON-formatted file containing a collection of configuration settings. For all the available settings, see the defaults.conf file or refer to the complete Garnet settings list.

redis.conf

Garnet supports the redis.conf file format as a configuration file. Note that not all redis.conf keywords are supported. Please see the following list of supported redis.conf keywords:

redis.conf keyword	garnet.conf keyword	Notes
bind	bind	Only first address used
port	port
maxmemory	memory
logfile	file-logger
loglevel	logger-level
dir	checkpointdir
requirepass	password
aclfile	acl-file
cluster-enabled	cluster
cluster-node-timeout	cluster-timeout
tls-port	tls	Value used to indicate if TLS should be used, port number is otherwise ignored
tls-cert-file	cert-file-name	Garnet currently supports TLS using a .pfx file and passphrase, while Redis supportes TLS using .crt and .key files. In order to use TLS in Garnet while using redis.conf, convert your certificate to .pfx format (see details in the security section), then use the .pfx file path as the tls-cert-file value. If a passphrase was used when creating the original certificate, specify it in the tls-key-file-pass parameter as you would in Redis (or via the --cert-password command line argument). When starting the server, use the --cert-subject-name command line argument to set the certificate subject name, if applicable.
tls-key-file	cert-password	See tls-cert-file notes
tls-auth-clients	client-certificate-required	See tls-cert-file notes
latency-tracking	latency-monitor
io-threads	numthreads
repl-diskless-sync-delay	replica-sync-delay

Command line arguments

Any setting in Garnet can be also configured by specifying a command line argument. / If the setting is also specified in the configuration file, it will be overridden by the value specified in the command line. / For all available command line settings, run GarnetServer.exe -h or GarnetServer.exe -help, or refer to the complete Garnet settings list.

Configurable Settings

garnet.conf keyword	Command line keyword(s)	Type	Valid Values	Description
Port	--port	int	Integer in range: [0, 65535]	Port to run server on
Address	--bind	string	IP Address in v4/v6 format	IP address to bind server to (default: any)
MemorySize	-m --memory	string	Memory size	Total log memory used in bytes (rounds down to power of 2)
PageSize	-p --page	string	Memory size	Size of each page in bytes (rounds down to power of 2)
SegmentSize	-s --segment	string	Memory size	Size of each log segment in bytes on disk (rounds down to power of 2)
IndexSize	-i --index	string	Memory size	Size of hash index in bytes (rounds down to power of 2)
IndexMaxSize	--index-max-size	string	Memory size	Max size of hash index in bytes (rounds down to power of 2)
MutablePercent	--mutable-percent	int		Percentage of log memory that is kept mutable
ObjectStoreTotalMemorySize	--obj-total-memory	string	Memory size	Total object store log memory used including heap memory in bytes
ObjectStoreLogMemorySize	--obj-memory	string	Memory size	Object store log memory used in bytes excluding heap memory
ObjectStorePageSize	--obj-page	string	Memory size	Size of each object store page in bytes (rounds down to power of 2)
ObjectStoreSegmentSize	--obj-segment	string	Memory size	Size of each object store log segment in bytes on disk (rounds down to power of 2)
ObjectStoreIndexSize	--obj-index	string	Memory size	Size of object store hash index in bytes (rounds down to power of 2)
ObjectStoreIndexMaxSize	--obj-index-max-size	string	Memory size	Max size of object store hash index in bytes (rounds down to power of 2)
ObjectStoreMutablePercent	--obj-mutable-percent	int		Percentage of object store log memory that is kept mutable
EnableStorageTier	--storage-tier	bool		Enable tiering of records (hybrid log) to storage, to support a larger-than-memory store. Use --logdir to specify storage directory.
CopyReadsToTail	--copy-reads-to-tail	bool		When records are read from the main store's in-memory immutable region or storage device, copy them to the tail of the log.
ObjectStoreCopyReadsToTail	--obj-copy-reads-to-tail	bool		When records are read from the object store's in-memory immutable region or storage device, copy them to the tail of the log.
LogDir	-l --logdir	string		Storage directory for tiered records (hybrid log), if storage tiering (--storage-tier) is enabled. Uses current directory if unspecified.
CheckpointDir	-c --checkpointdir	string		Storage directory for checkpoints. Uses logdir if unspecified.
Recover	-r --recover	bool		Recover from latest checkpoint and log, if present.
DisablePubSub	--no-pubsub	bool		Disable pub/sub feature on server.
EnableIncrementalSnapshots	--incsnap	bool		Enable incremental snapshots.
PubSubPageSize	--pubsub-pagesize	string	Memory size	Page size of log used for pub/sub (rounds down to power of 2)
DisableObjects	--no-obj	bool		Disable support for data structure objects.
EnableCluster	--cluster	bool		Enable cluster.
CleanClusterConfig	--clean-cluster-config	bool		Start with clean cluster config.
AuthenticationMode	--auth	GarnetAuthenticationMode	NoAuth, Password, Aad, ACL	Authentication mode of Garnet. This impacts how AUTH command is processed and how clients are authenticated against Garnet. Value options: NoAuth, Password, Aad, ACL
Password	--password	string		Authentication string for password authentication.
ClusterUsername	--cluster-username	string		Username to authenticate intra-cluster communication with.
ClusterPassword	--cluster-password	string		Password to authenticate intra-cluster communication with.
AclFile	--acl-file	string		External ACL user file.
AadAuthority	--aad-authority	string		The authority of AAD authentication.
AadAudiences	--aad-audiences	string		The audiences of AAD token for AAD authentication. Should be a comma separated string.
AadIssuers	--aad-issuers	string		The issuers of AAD token for AAD authentication. Should be a comma separated string.
AuthorizedAadApplicationIds	--aad-authorized-app-ids	string		The authorized client app Ids for AAD authentication. Should be a comma separated string.
EnableAOF	--aof	bool		Enable write ahead logging (append-only file).
AofMemorySize	--aof-memory	string	Memory size	Total AOF memory buffer used in bytes (rounds down to power of 2) - spills to disk after this limit
AofPageSize	--aof-page-size	string	Memory size	Size of each AOF page in bytes(rounds down to power of 2)
CommitFrequencyMs	--aof-commit-freq	int	Integer in range: [-1, MaxValue]	Write ahead logging (append-only file) commit issue frequency in milliseconds. 0 = issue an immediate commit per operation, -1 = manually issue commits using COMMITAOF command
WaitForCommit	--aof-commit-wait	bool		Wait for AOF to flush the commit before returning results to client. Warning: will greatly increase operation latency.
AofSizeLimit	--aof-size-limit	string	Memory size	Maximum size of AOF (rounds down to power of 2) after which unsafe truncation will be applied. Left empty AOF will grow without bound unless a checkpoint is taken
CompactionFrequencySecs	--compaction-freq	int	Integer in range: [0, MaxValue]	Background hybrid log compaction frequency in seconds. 0 = disabled (compaction performed before checkpointing instead)
CompactionType	--compaction-type	LogCompactionType	None, Shift, ShiftForced, Scan, Lookup	Hybrid log compaction type. Value options: None - No compaction, Shift - shift begin address without compaction (data loss), ShiftForced - shift begin address without compaction (data loss). Immediately deletes files - do not use if you plan to recover after failure, Scan - scan old pages and move live records to tail (no data loss - take a checkpoint to actually delete the older data files from disk), Lookup - Lookup each record in compaction range, for record liveness checking using hash chain (no data loss - take a checkpoint to actually delete the older data files from disk)
CompactionMaxSegments	--compaction-max-segments	int	Integer in range: [0, MaxValue]	Number of log segments created on disk before compaction triggers.
ObjectStoreCompactionMaxSegments	--obj-compaction-max-segments	int	Integer in range: [0, MaxValue]	Number of object store log segments created on disk before compaction triggers.
GossipSamplePercent	--gossip-sp	int		Percent of cluster nodes to gossip with at each gossip iteration.
GossipDelay	--gossip-delay	int	Integer in range: [0, MaxValue]	Cluster mode gossip protocol per node sleep (in seconds) delay to send updated config.
ClusterTimeout	--cluster-timeout	int	Integer in range: [0, MaxValue]	Cluster node timeout is the amount of seconds a node must be unreachable.
ClusterTlsClientTargetHost	--cluster-tls-client-target-host	string		Name for the client target host when using TLS connections in cluster mode.
EnableTLS	--tls	bool		Enable TLS.
CertFileName	--cert-file-name	string		TLS certificate file name (example: testcert.pfx).
CertPassword	--cert-password	string		TLS certificate password (example: placeholder).
CertSubjectName	--cert-subject-name	string		TLS certificate subject name.
CertificateRefreshFrequency	--cert-refresh-freq	int	Integer in range: [0, MaxValue]	TLS certificate refresh frequency in seconds (0 to disable).
ClientCertificateRequired	--client-certificate-required	bool		Whether TLS client certificate required.
CertificateRevocationCheckMode	--certificate-revocation-check-mode	X509RevocationMode	NoCheck, Online, Offline	Certificate revocation check mode for certificate validation (NoCheck, Online, Offline).
IssuerCertificatePath	--issuer-certificate-path	string		Full path of file with issuer certificate for validation. If empty or null, validation against issuer will not be performed.
LatencyMonitor	--latency-monitor	bool		Track latency of various events.
MetricsSamplingFrequency	--metrics-sampling-freq	int	Integer in range: [0, MaxValue]	Metrics sampling frequency in seconds. Value of 0 disables metrics monitor task.
QuietMode	-q --	bool		Enabling quiet mode does not print server version and text art.
LogLevel	--logger-level	LogLevel	Trace, Debug, Information, Warning, Error, Critical, None	Logging level. Value options: Trace, Debug, Information, Warning, Error, Critical, None
DisableConsoleLogger	--disable-console-logger	bool		Disable console logger.
FileLogger	--file-logger	string		Enable file logger and write to the specified path.
ThreadPoolMinThreads	--minthreads	int	Integer in range: [0, MaxValue]	Minimum worker and completion threads in thread pool, 0 uses the system default.
ThreadPoolMaxThreads	--maxthreads	int	Integer in range: [0, MaxValue]	Maximum worker and completion threads in thread pool, 0 uses the system default.
UseAzureStorage	--use-azure-storage	bool		Use Azure Page Blobs for storage instead of local storage.
AzureStorageConnectionString	--storage-string	string		The connection string to use when establishing connection to Azure Blobs Storage.
CheckpointThrottleFlushDelayMs	--checkpoint-throttle-delay	int	Integer in range: [-1, MaxValue]	Whether and by how much should we throttle the disk IO for checkpoints: -1 - disable throttling; >= 0 - run checkpoint flush in separate task, sleep for specified time after each WriteAsync
EnableFastCommit	--fast-commit	bool		Use FastCommit when writing AOF.
FastCommitThrottleFreq	--fast-commit-throttle	int	Integer in range: [0, MaxValue]	Throttle FastCommit to write metadata once every K commits.
NetworkSendThrottleMax	--network-send-throttle	int	Integer in range: [0, MaxValue]	Throttle the maximum outstanding network sends per session.
EnableScatterGatherGet	--sg-get	bool		Whether we use scatter gather IO for MGET or a batch of contiguous GET operations - useful to saturate disk random read IO.
ReplicaSyncDelayMs	--replica-sync-delay	int	Integer in range: [0, MaxValue]	Whether and by how much (milliseconds) should we throttle the replica sync: 0 - disable throttling
MainMemoryReplication	--main-memory-replication	bool		Use main-memory replication model.
OnDemandCheckpoint	--on-demand-checkpoint	bool		Used with main-memory replication model. Take on demand checkpoint to avoid missing data when attaching
UseAofNullDevice	--aof-null-device	bool		With main-memory replication, use null device for AOF. Ensures no disk IO, but can cause data loss during replication.
ConfigImportPath	--config-import-path	string		Import (load) configuration options from the provided path
ConfigImportFormat	--config-import-format	ConfigFileType	GarnetConf, RedisConf	Format of configuration options in path specified by config-import-path
ConfigExportFormat	--config-export-format	ConfigFileType	GarnetConf, RedisConf	Format to export configuration options to path specified by config-export-path
UseAzureStorageForConfigImport	--use-azure-storage-for-config-import	bool		Use Azure storage to import config file
ConfigExportPath	--config-export-path	string		Export (save) current configuration options to the provided path
UseAzureStorageForConfigExport	--use-azure-storage-for-config-export	bool		Use Azure storage to export config file
UseNativeDeviceLinux	--use-native-device-linux	bool		Use native device on Linux for local storage
RevivBinRecordSizes	--reviv-bin-record-sizes	int[]		#,#,...,#: For the main store, the sizes of records in each revivification bin, in order of increasing size. Supersedes the default --reviv; cannot be used with --reviv-in-chain-only
RevivBinRecordCounts	--reviv-bin-record-counts	int[]		#,#,...,#: For the main store, the number of records in each bin: Default (not specified): If reviv-bin-record-sizes is specified, each bin is 256 records # (one value): If reviv-bin-record-sizes is specified, then all bins have this number of records, else error #,#,...,# (multiple values): If reviv-bin-record-sizes is specified, then it must be the same size as that array, else error Supersedes the default --reviv; cannot be used with --reviv-in-chain-only
RevivifiableFraction	--reviv-fraction	double	Double in range: [0, 1]	#: Fraction of mutable in-memory log space, from the highest log address down to the read-only region, that is eligible for revivification. Applies to both main and object store.
EnableRevivification	--reviv	bool		A shortcut to specify revivification with default power-of-2-sized bins. This default can be overridden by --reviv-in-chain-only or by the combination of reviv-bin-record-sizes and reviv-bin-record-counts.
RevivNumberOfBinsToSearch	--reviv-search-next-higher-bins	int	Integer in range: [0, MaxValue]	Search this number of next-higher bins if the search cannot be satisfied in the best-fitting bin. Requires --reviv or the combination of rconeviv-bin-record-sizes and reviv-bin-record-counts
RevivBinBestFitScanLimit	--reviv-bin-best-fit-scan-limit	int	Integer in range: [0, MaxValue]	Number of records to scan for best fit after finding first fit. Requires --reviv or the combination of reviv-bin-record-sizes and reviv-bin-record-counts 0: Use first fit #: Limit scan to this many records after first fit, up to the record count of the bin
RevivInChainOnly	--reviv-in-chain-only	bool		Revivify tombstoned records in tag chains only (do not use free list). Cannot be used with reviv-bin-record-sizes or reviv-bin-record-counts. Propagates to object store by default.
RevivObjBinRecordCount	--reviv-obj-bin-record-count	int	Integer in range: [0, MaxValue]	Number of records in the single free record bin for the object store. The Object store has only a single bin, unlike the main store. Ignored unless the main store is using the free record list.
ObjectScanCountLimit	--object-scan-count-limit	int	Integer in range: [0, MaxValue]	Limit of items to return in one iteration of *SCAN command
ExtensionBinPaths	--extension-bin-paths	string[]		List of directories on server from which custom command binaries can be loaded by admin users
ExtensionAllowUnsignedAssemblies	--extension-allow-unsigned	bool		Allow loading custom commands from digitally unsigned assemblies (not recommended)
IndexResizeFrequencySecs	--index-resize-freq	int	Integer in range: [1, MaxValue]	Index resize check frequency in seconds
IndexResizeThreshold	--index-resize-threshold	int	Integer in range: [1, 100]	Overflow bucket count over total index size in percentage to trigger index resize