an overview of ambari

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Apache Ambari Provisioning, Managing and Monitoring Hadoop

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Agenda

• Ambari Overview and the Community • Ambari Architecture • Provisioning Clusters and Services • Extensibility Features

– Ambari Stacks – Ambari Views – Ambari Blueprints

• Releases • Learn More • Q & A

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Hadoop Operations with Ambari

Provision: Simplified deployment across platforms

Manage: Consistent controls across the Stack

Monitor: Visibility into key cluster metrics -  Single pane of glass for Hadoop & System status -  Pre-configured metrics & alerts

-  Single point for cluster operations -  Advanced configurations and host controls

-  Wizard-driven cluster install experience -  Cloud, virtual and physical environments

Apache Ambari is a 100% open source framework for provisioning, managing and monitoring Hadoop clusters

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100% Apache Open Source

• Active Community •  60+ Contributors / 30+ Committers •  200+ Ambari User Group Members

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2013

Oct Apache Ambari 1.4.1 Released Adds operations for Hadoop 2 Stack

Ambari Ambari 1.2.0 Released Operations for Hadoop 1 Stack

2013

Jan

2013

Dec Apache Ambari Graduates to Top Level Project

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Ambari Release Cadence

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Ambari 1.4.3 Jan 2014

Ambari 1.4.4 Feb 2014

Ambari 1.5.0 Apr 2014

Ambari 1.7.0 2H2014

Ambari 1.6.0 May 2014

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Demo #1 Cluster Management

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System Architecture

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Ambari Server

Host

Agent

Host

Agent

Host

Agent

Ambari Web

DB

/clusters!

Host

Agent

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Ambari Server Architecture

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DB Orchestrator Monitoring

REST API

Request Dispatcher

Ambari Web

Ambari Server

Ambari Agents

Metrics Providers

Auth P

rovider

/clusters!

User!Repo!

java!

python!

JS!

RDBMS!

LDAP!

REST API

Configurable Auth Provider

Cluster Configurations and Topology

Web Client

AD!

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Installing Ambari

• Install Ambari Server • Setup Options

– JDK (Oracle JDK 6, Oracle JDK 7, Custom JDK) – Database (PostgreSQL, MySQL or Oracle) – Server Port and HTTPS – User Authentication (Local, LDAP or AD) – Server-Agent Two-way SSL

• Start Ambari Server • Browse to Ambari Web for Cluster Install Wizard • Install Ambari Agents

– Option #1: Automate via SSH – Option #2: Manual

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Installing Agents

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OPTION 1!automate!

provide SSH Key!

OPTION 2!manual!

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Option #1: Ambari Agent via SSH

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Ambari Server Ambari Agent

1) Configure Ambari Repo!

2) Copy Ambari Agent Setup script!

3) Execute Ambari Agent Setup script!

4) Install ambari-agent!

5) Configure ambari-agent.ini!

6) Start ambari-agent!

7) Begin Ambari Agent Registration!

Uses the SSH

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Option #2: Ambari Agent via Manual

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Ambari Server Ambari Agent

2) Install ambari-agent!

3) Configure ambari-agent.ini!

4) Start ambari-agent!

5) Begin Ambari Agent Registration!

1) Configure Ambari repo!

** User executes all ops on the Agent host(s). No requirement for SSH Private Key.

No SSH

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Ambari Agent Registration

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Ambari Server Ambari Agent

11) Agent Heartbeat Begins!

1) Connect on Handshake port 8441!

4) Sign Agent Cert!

2) Download Server Cert!

6) Connect on Registration port 8440!

7) Perform 2WAY auth using Agent Cert!

10) Complete Host Registration!

Agent Host

8) Get FQDN!

9) Register host!

8a) Host

Script!

3) Request to Sign Agent Cert!

5) Download Agent Cert + Disconnect!

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Demo #2 Cluster Install

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Extensibility Features Ambari Stacks Ambari Blueprints Ambari Views

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Ambari Stacks

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Ambari Stacks

• Separate “the Stack” from “Ambari”

• Make it easier to bring more than a traditional “Hadoop Stack” under Ambari management

• Defining a consistent Service lifecycle management interface that can be extended

• Dynamically add Stacks + Services definitions

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Stack Details • Stacks define Services + Repos

– What is in the Stack, and where to get the bits • Each Service has a definition

– What Components are part of the Service • Each Service has defined lifecycle commands

– start, stop, status, install, configure • Lifecycle is controlled via command scripts • Ability to define “custom” commands • Ability to “extend” Stacks

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AMBARI  SERVER  

Stack

Command  Scripts  

Service  Defini:ons  

AMBARI  AGENT/S  AMBARI  AGENT/S  AMBARI  AGENT/S  

python!xml!

Repos

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Stack Mechanics

• Ambari Server reads Stack definitions on start

• Ambari Server sends a command to Agents

• Agents download Stack definition + command scripts

• Agent executes command

• If the Stack definition changes, Agent will request latest Stack definition + command scripts

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Ambari Blueprints

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Ambari Blueprints

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STACK   HOSTS   BLUEPRINT  

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Automating Installs •  Blueprint defines a cluster layout and

component configuration for a Stack

•  Provide Blueprint to Ambari to perform cluster installation (no wizard required)

•  Export Blueprint from existing cluster

BLUEPRINT! Ambari  

Submit Blueprint to Ambari Hadoop  

Cluster

Ambari provisions cluster

BLUEPRINT!<stack>!<host>!

<service>!<component>!<config>!

HOST!MANIFEST!<host>!<meta>!

SERVICE!CONFIGS!<props>!

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Ambari + OpenStack

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OpenStack  Infrastructure  

Horizon

Savanna

AMBARI  SERVER  

Hadoop  Cluster

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Ambari Views

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Ambari Views

• Goal: Customize the Ambari Web experience

• Views compliment Stack Extensibility – Stack Extensibility makes custom Stack Services available to Ambari – Views expose custom UI features for Services

• Ambari Admins can entitle “views” to Ambari Web users

– Entitlements framework for finer-grained permissions control for Ambari users

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View Usage

• Developer Creates a View

• Deploys View to Ambari Server

• Ambari Admin creates instances of Views

• Ambari Admin entitles Views to users

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View Configuration + Entitlement

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Customized Views

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“admin” gets operator controls “joe.user” gets specific views based on entitlements

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Releases What’s Up Next

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What’s New in Ambari 1.5.0

• Maintenance Mode • Rolling Restarts • Bulk Host Operations • Decommission TTs, NMs, RSs • Add Service • Refresh Client Configs • Default JDK 7 • For a complete list of changes:

https://issues.apache.org/jira/browse/AMBARI/fixforversion/12325019

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Ambari Futures

• Operations – Ambari Blueprints – Component log access + search – Ubuntu and Windows support

• Extensibility – Finer-grain user entitlements – Ambari Views

• Insight – Troubleshooting + Performance Tuning – Capacity Planning

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Learn More

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Resource Location

Apache Ambari Project Page http://ambari.apache.org

Ambari Project Wiki https://cwiki.apache.org/confluence/display/AMBARI

Ambari Project JIRA https://issues.apache.org/jira/browse/AMBARI

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Q & A

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