Scenario
Ranger provides permission policies for services. When the number of service instances using Ranger increases, you need to adjust the specifications of Ranger.
This section applies only to MRS 3.2.0 or later.
Configuring Memory Parameters
- Log in to FusionInsight Manager and choose Cluster > Services > Ranger. Click Configurations then All Configurations, and search for GC_OPTS in the RangerAdmin JVM parameter. The default value of GC_OPTS is -Dproc_rangeradmin -Xms2G -Xmx2G -XX:MaxDirectMemorySize=512M -XX:MetaspaceSize=100M -XX:MaxMetaspaceSize=200M -XX:PermSize=64M -XX:MaxPermSize=512M -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:${RANGER_ADMIN_LOG_DIR}/gc-worker-%p-%t.log -XX:+UseGCLogFileRotation -XX:NumberOfGCLogFiles=20 -XX:GCLogFileSize=20M -verbose:gc -Djdk.tls.ephemeralDHKeySize=3072 -Djava.security.auth.login.config=#{conf_dir}/jaas.conf -Djava.security.krb5.conf=${KRB5_CONFIG} -Dbeetle.application.home.path=${BIGDATA_HOME}/common/runtime/security/config -Djna.tmpdir=${RANGER_TMP_HOME} -Djava.io.tmpdir=${RANGER_TMP_HOME} ${JAVA_STACK_PREFER} -Djdk.tls.rejectClientInitiatedRenegotiation=true.
- Change the value of GC_OPTS in the RangerAdmin JVM parameter as follows:
Service instances that use Ranger include HDFS (NameNode), YARN (ResourceManager), HBase (HMaster and RegionServer), Hive (HiveServer), Kafka (Broker), Elasticsearch (EsNode, EsMaster, and EsClient), CDL (CDLService), and HetuEngine (HSBroker). When the number of these instances increases, change the default value -Xms2G -Xmx2G according to the reference RangerAdmin memory specifications listed below.
Ranger Instances
Reference Value
200
-Xms4G -Xmx4G
400
-Xms8G -Xmx8G
600
-Xms12G -Xmx12G