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Managing and Monitoring a Cluster
Introducing Ambari operations
Understanding Ambari architecture
Access Ambari
Access Ambari Admin page
Working with the cluster dashboard
Open the cluster dashboard
Scan operating status
Monitor service metrics
View cluster health
View cluster heatmaps
Finding current stack and versions information
Viewing service account user names
Modifying the cluster dashboard
Replace a removed widget
Reset the dashboard
Customize metrics display
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
Set the rack id for Ambari
Set the rack id on a host
Set the rack id using a custom topology script
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
Enable the Oozie UI on CentOS RHEL Oracle Linux 7 PPC
Enable the Oozie UI on CentOS RHEL Oracle Linux 7
Enable the Oozie UI on Suse11 sp4
Enable the Oozie UI on Suse 11 sp3
Enable the Oozie UI on SLES 12
Enable the Oozie UI on Ubuntu 14
Enable the Oozie UI on Ubuntu 16
Enable the Oozie UI on Debian 9
Refresh YARN Capacity Scheduler
Restart all required services
Managing service configuration settings
Change configuration settings
Adjust Smart Config settings
Edit specific configuration properties
Review and confirm configuration changes
Restart components
Download client configuration files for a service
Download all client configuration files for a cluster
Managing service configuration versions
Understanding service configuration versions
Service configuration terminology
Save a service configuration change
View service configuration history
Compare service configuration versions
Make a previous service version current
Managing HDFS
Rebalance HDFS blocks
Tune HDFS garbage collection
Customize the HDFS home directory
Configure HDFS Federation
Configure ViewFs
Start Kerberos wizard from Ambari Web
Regenerate Kerberos keytabs from Ambari Web
Disable Kerberos from Ambari Web
Configuring log settings
Limit the size and number of backup log files for a service
Customize log4j settings for a service
Managing host configuration groups
Create a new host configuration group
Add a host to a configuraton group
Edit settings for a configuraton group
Host configuration groups example workflow
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
HDFS alerts
HDFS high availability alerts
NameNode high availability alerts
YARN alerts
MapReduce2 alerts
HBase service alerts
Hive alerts
Oozie alerts
ZooKeeper alerts
Ambari alerts
Ambari metrics alerts
SmartSense alerts
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