Cloudera Enterprise 6.3.x | Other versions

Exposing Hadoop Metrics to Graphite

Core Hadoop services and HBase support the writing of their metrics to Graphite, a real-time graphing system.

HDFS, YARN, and HBase support the Metrics2 framework; MapReduce1 and HBase support the Metrics framework. See the Cloudera blog post, What is Hadoop Metrics2?

Configure Hadoop Metrics for Graphite Using Cloudera Manager

Minimum Required Role: Configurator (also provided by Cluster Administrator, Full Administrator)

  1. Go to the Home page by clicking the Cloudera Manager logo.
  2. Click Configuration > Advanced Configuration Snippets.
  3. Search on the term Metrics.
  4. To configure HDFS, YARN, or HBase, use Hadoop Metrics2 Advanced Configuration Snippet (Safety Valve). For MapReduce1 (or HBase), use Hadoop Metrics Advanced Configuration Snippet (Safety Valve).
  5. Click Edit Individual Values to see the supported daemons and their default groups.
  6. Configure each default group with a metrics class, sampling period, and Graphite server. See the tables below.
  7. To add optional parameters for socket connection retry, modify this example as necessary: 
    *.sink.graphite.retry_socket_interval=60000 #in milliseconds
*.sink.graphite.socket_connection_retries=10 #Set it to 0 if you do not want it to be retried
  8. Click Save Changes.
  9. Restart the cluster or service depending on the scope of your changes.

Graphite Configuration Settings Per Daemon

Table 1. Hadoop Metrics2 Graphite Configuration
Service Daemon Default Group Graphite Configuration Settings
HBase Master and RegionServer 
*.sink.graphite.class=org.apache.hadoop.metrics2.sink.GraphiteSink
*.period=10
hbase.sink.graphite.server_host=<hostname>
hbase.sink.graphite.server_port=<port>
hbase.sink.graphite.metrics_prefix=<prefix>
HDFS DataNode 
*.sink.graphite.class=org.apache.hadoop.metrics2.sink.GraphiteSink
*.period=10
datanode.sink.graphite.server_host=<hostname>
datanode.sink.graphite.server_port=<port>
datanode.sink.graphite.metrics_prefix=<prefix>
NameNode 
*.sink.graphite.class=org.apache.hadoop.metrics2.sink.GraphiteSink
*.period=10
namenode.sink.graphite.server_host=<hostname>
namenode.sink.graphite.server_port=<port>
namenode.sink.graphite.metrics_prefix=<prefix>
SecondaryNameNode 
*.sink.graphite.class=org.apache.hadoop.metrics2.sink.GraphiteSink
*.period=10
secondarynamenode.sink.graphite.server_host=<hostname>
secondarynamenode.sink.graphite.server_port=<port>
secondarynamenode.sink.graphite.metrics_prefix=<prefix>
YARN NodeManager 
*.sink.graphite.class=org.apache.hadoop.metrics2.sink.GraphiteSink
*.period=10
nodemanager.sink.graphite.server_host=<hostname>
nodemanager.sink.graphite.server_port=<port>
nodemanager.sink.graphite.metrics_prefix=<prefix>
ResourceManager 
*.sink.graphite.class=org.apache.hadoop.metrics2.sink.GraphiteSink
*.period=10
resourcemanager.sink.graphite.server_host=<hostname>
resourcemanager.sink.graphite.server_port=<port>
resourcemanager.sink.graphite.metrics_prefix=<prefix>
JobHistory Server 
*.sink.graphite.class=org.apache.hadoop.metrics2.sink.GraphiteSink
*.period=10
jobhistoryserver.sink.graphite.server_host=<hostname>
jobhistoryserver.sink.graphite.server_port=<port>
jobhistoryserver.sink.graphite.metrics_prefix=<prefix>
  Note: To use metrics, set values for each context. For example, for MapReduce1, add values for both the JobTracker Default Group and the TaskTracker Default Group.
Table 2. Hadoop Metrics Graphite Configuration
Service Daemon Default Group Graphite Configuration Settings
HBase Master 
hbase.class=org.apache.hadoop.metrics.graphite.GraphiteContext 
hbase.period=10 
hbase.servers=<graphite hostname>:<port> 
 
jvm.class=org.apache.hadoop.metrics.graphite.GraphiteContext 
jvm.period=10 
jvm.servers=<graphite hostname>:<port>  

rpc.class=org.apache.hadoop.metrics.graphite.GraphiteContext 
rpc.period=10 
rpc.servers=<graphite hostname>:<port>
RegionServer
MapReduce1 JobTracker 
dfs.class=org.apache.hadoop.metrics.graphite.GraphiteContext 
dfs.period=10 
dfs.servers=<graphite hostname>:<port> 

mapred.class=org.apache.hadoop.metrics.graphite.GraphiteContext 
mapred.period=10 
mapred.servers=<graphite hostname>:<port> 

jvm.class=org.apache.hadoop.metrics.graphite.GraphiteContext 
jvm.period=10 
jvm.servers=<graphite hostname>:<port> 

rpc.class=org.apache.hadoop.metrics.graphite.GraphiteContext 
rpc.period=10 
rpc.servers=<graphite hostname>:<port>
TaskTracker
Page generated August 29, 2019.