Apache Ambari Operations
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Contents

1. Ambari Operations: Overview
Ambari Architecture
Accessing Ambari Web
2. Understanding the Cluster Dashboard
Viewing the Cluster Dashboard
Scanning Operating Status
Viewing Details from a Metrics Widget
Linking to Service UIs
Viewing Cluster-Wide Metrics
Modifying the Cluster Dashboard
Replace a Removed Widget to the Dashboard
Reset the Dashboard
Customizing Metrics Display
Viewing Cluster Heatmaps
3. Managing Hosts
Understanding Host Status
Searching the Hosts Page
Performing Host-Level Actions
Managing Components on a Host
Decommissioning a Master or Slave
Decommission a Component
Delete a Component
Deleting a Host from a Cluster
Setting Maintenance Mode
Set Maintenance Mode for a Service
Set Maintenance Mode for a Host
When to Set Maintenance Mode
Add Hosts to a Cluster
Establishing Rack Awareness
Set the Rack ID for Ambari
Set the Rack ID Using a Custom Topology Script
4. Managing Services
Starting and Stopping All Services
Displaying Service Operating Summary
Alerts and Health Checks
Modifying the Service Dashboard
Adding a Service
Performing Service Actions
Rolling Restarts
Setting Rolling Restart Parameters
Aborting a Rolling Restart
Monitoring Background Operations
Removing A Service
Operations Audit
Using Quick Links
Refreshing YARN Capacity Scheduler
Managing HDFS
Rebalancing HDFS
Tuning Garbage Collection
Customizing the HDFS Home Directory
Managing Atlas in a Storm Environment
5. Managing Service High Availability
NameNode High Availability
Configuring NameNode High Availability
Rolling Back NameNode HA
Managing Journal Nodes
ResourceManager High Availability
Configure ResourceManager High Availability
Disable ResourceManager High Availability
HBase High Availability
Adding an HBase Master Component
Hive High Availability
Adding a Hive Metastore Component
Adding a HiveServer2 Component
Adding a WebHCat Server
Storm High Availability
Adding a Nimbus Component
Oozie High Availability
Adding an Oozie Server Component
Apache Atlas High Availability
Enabling Ranger Admin High Availability
6. Managing Configurations
Changing Configuration Settings
Adjust Smart Config Settings
Edit Specific Properties
Review and Confirm Configuration Changes
Restart Components
Manage Host Config Groups
Configuring Log Settings
Set Service Configuration Versions
Basic Concepts
Terminology
Saving a Change
Viewing History
Comparing Versions
Reverting a Change
Host Config Groups
Download Client Configuration Files
7. Administering the Cluster
Using Stack and Versions Information
Viewing Service Accounts
Enabling Kerberos and Regenerating Keytabs
Regenerate Key tabs
Disable Kerberos
Enable Service Auto-Start
8. Managing Alerts and Notifications
Understanding Alerts
Alert Types
Modifying Alerts
Modifying Alert Check Counts
Disabling and Re-enabling Alerts
Tables of Predefined Alerts
HDFS Service Alerts
HDFS HA Alerts
NameNode HA Alerts
YARN Alerts
MapReduce2 Alerts
HBase Service Alerts
Hive Alerts
Oozie Alerts
ZooKeeper Alerts
Ambari Alerts
Ambari Metrics Alerts
Managing Notifications
Creating and Editing Notifications
Creating or Editing Alert Groups
Dispatching Notifications
Viewing the Alert Status Log
Customizing Notification Templates
9. Using Ambari Core Services
Understanding Ambari Metrics
AMS Architecture
Using Grafana
Grafana Dashboards Reference
AMS Performance Tuning
AMS High Availability (Technical Preview)
Ambari Log Search (Technical Preview)
Log Search Architecture
Installing Log Search
Using Log Search
Ambari Infra