5.3. YARN Alerts (Hadoop 2 only)
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Hortonworks Data Platform
5.3. YARN Alerts (Hadoop 2 only)
These alerts are used to monitor YARN.
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1. Introducing Ambari Web
1. Architecture
1.1. Sessions
2. Starting and Accessing Ambari Web
2. Navigating Ambari Web
1. The Navigation Header
2. The Dashboard View
2.1. The Widget Version
2.1.1. Services Summary
2.1.2. Cluster Status and Metrics
2.2. The Classic Version
2.3. Services Status
2.4. Cluster Metrics
3. The Heatmaps View
4. Monitoring and Managing Services
4.1. Starting and Stopping All Services
4.2. Selecting a Service
4.2.1. Adding a Service
4.2.1.1. Adding a Service to your Hadoop cluster
4.3. Viewing Summary, Alert, and Health Information
4.3.1. Alerts and Health Checks
4.4. Configuring Services
4.4.1. Updating Service Properties
4.4.2. Customizing Logging Properties
4.4.3. Managing Configuration Groups
4.4.4. Restarting components
4.4.5. Performing Service Actions
4.4.6. Rolling Restarts
4.4.6.1. Setting Rolling Restart Parameters
4.4.6.2. Aborting a Rolling Restart
4.4.7. Monitoring Background Operations
4.4.8. Using Quick Links
4.4.9. Analyzing Service Metrics
5. Managing Hosts
5.1. Working with Hosts
5.2. Determining Host Status
5.3. Filtering the Hosts List
5.4. Performing Host-Level Actions
5.5. Viewing Components on a Host
6. Maintenance Mode
6.1. Setting Maintenance Mode for Services, Components, and Hosts
6.1.1. How to Turn On Maintenance Mode for a Service
6.1.2. How to Turn On Maintenance Mode for a Host
6.1.3. How to Turn On Maintenance Mode for a Host (alternative using filtering for hosts)
6.1.4. Maintenance Mode Use Cases
6.2. Decommissioning Master and Slave Nodes
6.3. Deleting a Host from a Cluster
6.3.1. How to Delete a Host from a Cluster
6.4. Adding Hosts to a Cluster
6.5. Admin View
6.5.1. Managing Ambari Web Users
6.5.2. Managing NameNode High Availabilty for Hadoop 2.x
6.5.3. Enabling Kerberos Security
6.5.4. Checking Stack and Component Versions
6.5.5. Checking Service User Accounts and Groups
3. Using Nagios With Hadoop
1. Basic Nagios Architecture
2. Installing Nagios
3. Configuration File Locations
4. Configuring Nagios Alerts For Hadoop Services
5. Nagios Alerts For Hadoop Services
5.1. HDFS Service Alerts
5.1.1. Blocks health
5.1.1.1. Potential causes
5.1.1.2. Possible remedies
5.1.2. NameNode process
5.1.2.1. Potential causes
5.1.2.2. Possible remedies
5.1.3. DataNode space
5.1.3.1. Potential causes
5.1.3.2. Possible remedies
5.1.4. DataNode process
5.1.4.1. Potential causes
5.1.4.2. Possible remedies
5.1.5. NameNode host CPU utilization
5.1.5.1. Potential causes
5.1.5.2. Possible remedies
5.1.6. NameNode edit logs directory status
5.1.6.1. Potential causes
5.1.6.2. Possible remedies
5.1.7. NameNode Web UI
5.1.7.1. Potential causes
5.1.7.2. Possible remedies
5.1.8. Percent DataNodes with space available
5.1.8.1. Potential causes
5.1.8.2. Possible remedies
5.1.9. Percent DataNodes live
5.1.9.1. Potential causes
5.1.9.2. Possible remedies
5.1.10. NameNode RPC latency
5.1.10.1. Potential causes
5.1.10.2. Possible remedies
5.1.11. HDFS capacity utilization
5.1.11.1. Potential causes
5.1.11.2. Possible remedies
5.2. NameNode HA Alerts (Hadoop 2 only)
5.2.1. JournalNode process
5.2.1.1. Potential causes
5.2.1.2. Possible remedies
5.2.2. NameNode HA Healthy process
5.2.2.1. Potential causes
5.2.2.2. Possible remedies
5.3. YARN Alerts (Hadoop 2 only)
5.3.1. ResourceManager process
5.3.1.1. Potential causes
5.3.1.2. Possible remedies
5.3.2. Percent NodeManagers live
5.3.2.1. Potential causes
5.3.2.2. Possible remedies
5.3.3. ResourceManager Web UI
5.3.3.1. Potential causes
5.3.3.2. Possible remedies
5.3.4. ResourceManager RPC latency
5.3.4.1. Potential causes
5.3.4.2. Possible remedies
5.3.5. ResourceManager CPU utilization
5.3.5.1. Potential causes
5.3.5.2. Possible remedies
5.3.6. NodeManager process
5.3.6.1. Potential causes
5.3.6.2. Possible remedies
5.3.7. NodeManager health
5.3.7.1. Potential causes
5.3.7.2. Possible remedies
5.4. MapReduce2 Alerts (Hadoop 2 only)
5.4.1. HistoryServer Web UI
5.4.1.1. Potential causes
5.4.1.2. Possible remedies
5.4.2. HistoryServer RPC latency
5.4.2.1. Potential causes
5.4.2.2. Possible remedies
5.4.3. HistoryServer CPU utilization
5.4.3.1. Potential causes
5.4.3.2. Possible remedies
5.4.4. HistoryServer process
5.4.4.1. Potential causes
5.4.4.2. Possible remedies
5.5. MapReduce Service Alerts (Hadoop 1 only)
5.5.1. JobTracker RPC latency alert
5.5.1.1. Potential causes
5.5.1.2. Possible remedies
5.5.2. JobTracker process
5.5.2.1. Potential causes
5.5.2.2. Possible remedies
5.5.3. JobTracker Web UI
5.5.3.1. Potential causes
5.5.3.2. Possible remedies
5.5.4. JobTracker CPU utilization
5.5.4.1. Potential causes
5.5.4.2. Possible remedies
5.5.5. HistoryServer Web UI
5.5.5.1. Potential causes
5.5.5.2. Possible remedies
5.5.6. HistoryServer process
5.5.6.1. Potential causes
5.5.6.2. Possible remedies
5.6. HBase Service Alerts
5.6.1. Percent RegionServers live
5.6.1.1. Potential causes
5.6.1.2. Possible remedies
5.6.2. HBase Master process
5.6.2.1. Potential causes
5.6.2.2. Possible remedies
5.6.3. HBase Master Web UI
5.6.3.1. Potential causes
5.6.3.2. Possible remedies
5.6.4. HBase Master CPU utilization
5.6.4.1. Potential causes
5.6.4.2. Possible remedies
5.6.5. RegionServer process
5.6.5.1. Potential causes
5.6.5.2. Possible remedies
5.7. Hive Alerts
5.7.1. Hive-Metastore status
5.7.1.1. Potential causes
5.7.1.2. Possible remedies
5.8. WebHCat Alerts
5.8.1. WebHCat Server status
5.8.1.1. Potential causes
5.8.1.2. Possible remedies
5.9. Oozie Alerts
5.9.1. Oozie status
5.9.1.1. Potential causes
5.9.1.2. Possible remedies
5.10. Ganglia Alerts
5.10.1. Ganglia Server status
5.10.1.1. Potential causes
5.10.1.2. Possible remedies
5.10.2. Ganglia Monitor process
5.10.2.1. Potential causes
5.10.2.2. Possible remedies
5.11. Nagios Alerts
5.11.1. Nagios status log freshness
5.11.1.1. Potential causes
5.11.1.2. Possible remedies
5.12. ZooKeeper Alerts
5.12.1. Percent ZooKeeper servers live
5.12.1.1. Potential causes
5.12.1.2. Possible remedies
5.12.2. Zookeeper Server process
5.12.2.1. Potential causes
5.12.2.2. Possible remedies
5.13. Ambari Alerts
5.13.1. Ambari Agent process.
5.13.1.1. Potential causes
5.13.1.2. Possible remedies
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