Rebalance HDFS blocks
- In Ambari Web, browse to .
- Click .
- Enter the Balance Threshold value as a percentage of disk capacity.
- Click Start.
Hortonworks Docs » managing and monitoring an ambari cluster 2.7.4 » Managing and Monitoring a Cluster
Managing and Monitoring a Cluster
Also available as:
- Introducing Ambari operations
- Working with the cluster dashboard
- Modifying the cluster dashboard
- Managing Hosts
- View host status
- Find a host in the cluster
- Perform host level actions
- Add a host to a cluster
- Manage components on a host
- Decommission a host
- Decommission a NodeManager
- Decommission a RegionServer
- Decommission a DataNode
- Delete a component
- Delete a host from a cluster
- Bulk add or delete hosts
- Setting Maintenance Mode
- Set Maintenance Mode for a host
- Set Maintenance Mode for a service
- Establishing Rack Awareness
- Managing Services
- View service summary
- Find quick links to service information
- Link to the native user interface
- Add or remove a service widget
- Create a service widget
- Delete a service widget
- Export widget graph data
- Set display timezone
- Modify the service metrics dashboard
- Performing service actions
- Start all services
- Stop all services
- Add a service
- Restart multiple components
- Set rolling restart parameters
- Monitor background operations
- Abort a rolling restart
- Enable Service Auto Start from Ambari Web
- Disable service auto start settings from Ambari Web
- Remove a service
- Bulk add or delete service components
- Read audit log files
- Enable the Oozie UI
- Refresh YARN Capacity Scheduler
- Restart all required services
- Managing service configuration settings
- Managing service configuration versions
- Managing HDFS
- Start Kerberos wizard from Ambari Web
- Configuring log settings
- Managing host configuration groups
- Managing Alerts and Notifications
- Understanding alerts
- Alert types
- Find alerts for a service
- Modify an alert
- Modify the global alert check count
- Override the global alert check count
- Enabling an alert
- Disabling an alert
- View the alert status log
- Understanding notifications
- Create an alert notification
- Create an alert group
- Understanding dispatch notifications
- Customize notification templates
- Predefined Alerts