warden.conf

The file /opt/mapr/conf/warden.conf controls parameters related to MapR services and the warden. Most of the parameters are not intended to be edited directly by users. The following table shows the parameters of interest:

NOTE: When defining heapsize values for services, keep in mind that service.heapsize.percent is bounded by service.heapsize.min, if defined, and service.heapsize.max.

Parameter	Sample Value	Description
`service.command.cldb.heapsize.percent`	8	The percentage of heap space reserved for the CLDB.
`service.command.cldb.heapsize.max`	4000	The maximum heap space, specified in MB, that can be used by the CLDB.
`service.command.cldb.heapsize.min`	256	The minimum heap space, specified in MB, for use by the CLDB.
`service.command.cldb.retryinterval.time.sec`	600	Specifies an interval in seconds. The warden attempts to restart a failed CLDB service when this interval expires.
`service.command.mfs.heapsize.percent`	35	The percentage of heap space reserved for the MapR-FS. If the value for `isDB` is `true`, this property cannot be set to a value lower than 35. If it is set to a value below 35, it will revert to 35 when Warden is restarted to ensure that when MapR-DB is enabled, there is corresponding cache allocation. If you want to lower the heapsize allocated to MapR-FS, you must change `service.command.mfs.heapsize.maxpercent` instead. Restart the Warden after modifying this setting.
`service.command.mfs.heapsize.maxpercent`	85	The maximum percentage of heap space that can be allocated to the MapR-FS. Restart the Warden after modifying this setting.
`service.command.mfs.heapsize.min`	512	The minimum heap space, specified in MB, that can be allocated to the MapR-FS. Restart the Warden after modifying this setting.
`service.command.webserver.heapsize.percent`	3	The percentage of heap space reserved for the MapR Control System.
`service.command.webserver.heapsize.max`	750	The maximum heap space, specified in MB, that can be used by the MapR Control System.
`service.command.webserver.heapsize.min`	512	The minimum heap space, specified in MB, for use by the MapR Control System.
`service.command.nfs.heapsize.percent`	3	The percentage of heap space reserved for the NFS.
`service.command.nfs.heapsize.min`	64	The minimum heap space, specified in MB, that can be used by the NFS.
`service.command.nfs.heapsize.max`	1000	The maximum heap space,specified in MB, that can be used by the NFS.
`service.command.os.heapsize.percent`	3	The percentage of heap space reserved for the operating system.
`service.command.os.heapsize.max`	750	The maximum heap space, specified in MB, that can be used by the operating system.
`service.command.os.heapsize.min`	256	The minimum heap space, specified in MB, for use by the operating system.
`service.nice.value`	-10	The `nice` priority under which all services will run.
`zookeeper.servers`	10.250.1.61:5181	The list of ZooKeeper servers.
`services.memoryallocation.alarm.threshold`	95	The maximum amount of system memory that services running on the node can use before triggering the NODE_ALARM_MEMORY_ALLOCATION_EXCEEDED alarm.
`services.retries`	3	The number of times the Warden tries to restart a service that fails.
`services.resetretries.time.sec`	3600	Specifies a time interval in seconds. The `services.retries` parameter sets the number of times that the warden attempts to restart failing services within this interval.
`services.retryinterval.time.sec`	1800	The number of seconds after which the warden will again attempt several times to start a failed service. The number of attempts after each interval is specified by the parameter `services.retries`.
`cldb.port`	7222	The port for communicating with the CLDB.
`mfs.port`	5660	The port for communicating with the FileServer.
`hoststats.port`	5660	The port for communicating with the HostStats service.
`kvstore.port`	5660	The port for communicating with the Key/Value Store.
`mapr.home.dir`	/opt/mapr	The directory where MapR is installed.
`centralconfig.enabled`	true	Specifies whether to enable central configuration.
`pollcentralconfig.interval.seconds`	300	How often to check for configuration updates, in seconds.
`rpc.drop`	false	Drop outstanding metrics when the queue to send to hoststats is too large.
`hs.rpcon`	true	Whether or not to configure Job Management.
`hs.port`	1111	Hoststats listening port for Metrics RPC activity.
`hs.host`	localhost	Hoststats hostname for RPC activity.
`log.retention.time`	864000000	All `.log` and `.out` files in the cluster are kept for a time period defined by the value of the `log.retention.time` parameter in milliseconds. The default value is ten days. Restart the Warden after changing this value.
`log.retention.exceptions`		Retains the following log files instead of removing them during the log file cleanup that occurs every ten days: cldb.log,hoststats.log,configure.log,mfs.log-* You can modify the list. Partial file names and asterisks are accepted. Log files listed as exceptions are retained indefinitely.
`enable.overcommit`	false	Set this value to true to allow services to start up even if their memory demands exceed the memory provided by the node.
`isDB`	true	Specifies if MapR-DB is in use. When this value is `false`, the `service.command.mfs.heapsize.percent` is set to 20. Do not manually edit this value. For more information, see Memory Allocation for Nodes.

For information on configuration files for additional services, see warden.<servicename>.conf.