Lists the configuration parameters for Warden.
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 list describes the parameters of interest:
NOTE When defining heapsize values for services, keep in mind that
service.heapsize.percent is bound by
service.heapsize.min, if defined, and
service.heapsize.max.
- centralconfig.enabled
- Sample Value: true
- Description: Specifies whether to enable central configuration.
- cldb.port
- Sample Value: 7222
- Description: The port to use for communicating with the CLDB.
- enable.overcommit
- Sample Value: true
- Description:Set this value to
true to allow services to start up,
even if
their memory demands exceed the memory provided by the node.
- hoststats.port
- Sample Value: 5660
- Description: The port to use for communicating with the HostStats service.
- hs.port
- Sample Value: 1111
- Description: Hoststats listening port for Metrics RPC activity.
- hs.rpcon
- Sample Value: true
- Description: Indicates whether or not to configure Job Management.
- hs.host
- Sample Value: localhost
- Description: Hoststats hostname for RPC activity.
- isDB
- Sample Value: true
- Description: Specifies if HPE Ezmeral Data Fabric Database 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 Allocating Memory for Nodes..
- kvstore.port
- Sample Value: 5660
- Description: The port for communicating with the Key/Value Store.
- log.retention.exceptions
- Sample Value:
mfs.log-*
- Description: 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 and
mfs.log-*. You can modify the list. This parameter accepts
partial file names and asterisks. Log files listed as exceptions are retained
indefinitely.
To disable all exceptions, comment out this parameter, that
is, #log.retention.exceptions. When this parameter is null,
that is, log.retention.exceptions=, no files are picked for
log cleanup.
- log.retention.time
- Sample Value: 864000000
- Description: All
.log and .out files in the cluster
are kept for a time period defined in milliseconds by the value of the
log.retention.time parameter. The
default value is ten days. Restart the Warden after changing this
value.
- mapr.home.dir
- Sample Value:
/opt/mapr
- Description: MapR installation directory.
- mfs.port
- Sample Value: 7222
- Description: The port to use for communicating with the Fileserver.
- pollcentralconfig.interval.seconds
- Sample Value: 300
- Description: The frequency (in seconds) to check for central configuration updates.
- rpc.drop
- Sample Value: false
- Description: Drop outstanding metrics when the queue to send to hoststats is
too large.
- service.command.cldb.heapsize.max
- Sample Value: 4000
- Description: The maximum heap space, specified in MB, that the CLDB can
use.
- service.command.cldb.heapsize.min
- Sample Value: 256
- Description: The minimum heap space, specified in MB, that the CLDB can
use.
- service.command.cldb.heapsize.percent
- Sample Value: 8
- Description: The percentage of heap space reserved for CLDB.
- service.command.cldb.retryinterval.time.sec
- Sample Value: 600
- Description: Specifies an interval in seconds. The warden attempts to
restart a failed CLDB service when this interval expires.
NOTE The warden
restarts the CLDB service only if the service has been stopped unintentionally
- for example, the service crashed. Warden does not restart a CLDB service that
has been stopped intentionally using the maprcli node services
command.
- service.command.mfs.heapsize.maxpercent
- Sample Value: 85
- Description: The maximum percentage of heap space that can be allocated to
the file system. Restart the Warden after modifying
this setting.
- service.command.mfs.heapsize.min
- Sample Value: 512
- Description: The minimum heap space, specified in MB, that can be
allocated to the file system. Restart the Warden after
modifying this setting.
- service.command.mfs.heapsize.percent
- Sample Value: 35
- Description: The percentage of heap space reserved for the file system. If the value for
isDB is true, you cannot set this property to
a value lower than 35. If you set this parameter to a value lower than 35, the
value reverts to 35 when the Warden restarts, to ensure that when the HPE Ezmeral Data Fabric Database is enabled, corresponding cache allocation
occurs. If you want to lower the heapsize allocated to the file system, you must change
service.command.mfs.heapsize.maxpercent instead. Restart the
Warden after modifying this setting.
- service.command.nfs.heapsize.max
- Sample Value: 1000
- Description: The maximum heap
space, specified in MB, that the NFS can use.
- service.command.nfs.heapsize.min
- Sample Value: 64
- Description: The minimum heap space,
specified in MB, that the NFS can use.
- service.command.nfs.heapsize.percent
- Sample Value: 3
- Description: The percentage of heap space
reserved for the NFS.
- service.command.os.heapsize.max
- Sample Value: 750
- Description: The maximum heap space, specified in MB, that can be used by the
operating system.
- service.command.os.heapsize.min
- Sample Value: 256
- Description: The minimum heap space, specified in MB, for use by the
operating system.
- service.command.os.heapsize.percent
- Sample Value: 3
- Description: The percentage of heap space reserved for the operating
system.
- service.command.webserver.heapsize.min
- Sample Value: 512
- Description: The minimum heap space, specified in MB, for use by the MapR
Control System.
- service.command.webserver.heapsize.percent
- Sample Value: 3
- Description: The percentage of heap space reserved for the MapR Control
System.
- service.nice.value
- Sample Value: -10
- Description: The
nice priority under which all services
run.
- services.memoryallocation.alarm.threshold
- Sample Value: 95
- Description: The maximum amount of system
memory that services running on the node can use before triggering
the NODE_ALARM_MEMORY_ALLOCATION_EXCEEDED alarm.
- services.resetretries.time.sec
- Sample Value: 3600
- Description: 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.retries
- Sample Value: 3
- Description: The number of times the Warden tries to restart a service that
fails.
- services.retryinterval.time.sec
- Sample Value: 1800
- Description: The number of seconds after which the warden attempts
several times to start a failed service. The number of attempts
after each interval is specified by the parameter
services.retries.
- warden.enable.jmxremote
- Sample Value:
false
- Description: Set to
true to enable the Warden JMX
server.
- zookeeper.servers
- Sample Value: 10.250.1.61:5181 10.10.1.230:5181
- Description: Space separated list of Zookeeper servers.
For information on configuration files for additional services,
see warden.<servicename>.conf.