Ambari背景

一句话介绍Ambari

官方介绍

The Apache Ambari project is aimed at making Hadoop management simpler by developing software for provisioning, managing, and monitoring Apache Hadoop clusters. Ambari provides an intuitive, easy-to-use Hadoop management web UI backed by its RESTful APIs.

Ambari enables System Administrators to:

Provision a Hadoop Cluster

Ambari provides a step-by-step wizard for installing Hadoop services across any number of hosts.
Ambari handles configuration of Hadoop services for the cluster.

Manage a Hadoop Cluster

Ambari provides central management for starting, stopping, and reconfiguring Hadoop services across the entire cluster.

Monitor a Hadoop Cluster

Ambari provides a dashboard for monitoring health and status of the Hadoop cluster.
Ambari leverages Ambari Metrics System for metrics collection.
Ambari leverages Ambari Alert Framework for system alerting and will notify you when your attention is needed (e.g., a node goes down, remaining disk space is low, etc).

Ambari enables Application Developers and System Integrators to:

Easily integrate Hadoop provisioning, management, and monitoring capabilities to their own applications with the Ambari REST APIs.

我的理解

ambari 是一个能自动化一键部署、实时监控、预警控制、可伸缩扩展、支持web UI、致力于apache hadoop集群但不局限于hadoop集群的平台管理工具。

ambari 起源及发展历程

起源

说起Ambari，不得不提下Hortonworks和它的竞争对手们。

由于Apache社区版的Hadoop在面对企业级的应用时存在稳定性、可靠性、性能、易用性等方面的限制，许多公司都对其进行了“二次包装”，这些公司被称为Hadoop商业发行版提供商。

大浪淘沙，自从10+年前（2006年）Hadoop诞生到今天（2017年）为止，这一市场已被几大公司瓜分，国外比较著名的提供商有Cloudera、MapR、Hortonworks、IBM、Amazon等，国内比较著名的提供商有华为、星环科技等。这里面，目前只有Cloudera和Hortonworks两家国外公司有提供不收费的Hadoop商业发行版，分别叫做Cloudera’s Distribution Including Apache Hadoop（简称“CDH”）和Hortonworks Data Platform（简称“HDP”）。这两家公司也都提供了相应的集群管理、部署、监控的工具，分别是Cloudera Manager和Ambari。

值得注意的是，Cloudera Manager要比Ambari在年纪上大三岁，但这并不妨碍Ambari的快速成长，目前来看，Ambari与Cloudera Manager的功能差距正在迅速缩小，且由于Ambari是完全开源的，社区非常活跃(目前最新版本是2.5.1)，增加了越来越多的企业级的新特性，使得Ambari本身变的越来越强大。同时，不少公司也对Apache Ambari进行了“二次包装”，将Ambari从面向运维转变成了面向数据服务，未来说不定还会产生“Ambari商业发行版提供商”这样的称呼。

发展历程

Ambari Version	Release Date	Notable Enhancements
**2.5**	2017-05-09	Service Auto Start HDFS TopN User & Operation Visualization Simplified Log Rotation Configuration Enterprise Alert Notifications Using SNMP MIB
**2.4**	2016-08-26	Role-Based Access Control New and Customizable Alerts Log Search (Technical Preview)
**2.2**	2015-12-20	Advanced Metrics Visualization and Dashboards HDP Express Upgrade for fast cluster upgrades Ranger Guided Configurations for Simplified Security Setup Improved capabilities for accessing cluster metrics SmartSense Automatic Installation
**2.1**	2015-07-14	Guided Configurations Customizable Dashboards RHEL/CentOS 7 Support JDK 1.8 Support
**2.0**	2015-04-07	Automated Rolling Upgrades for HDP Simplified Kerberos Setup Ranger and Spark support Ambari Alerts & Ambari Metrics New Tez View
**1.7.0**	2014-12-02	Configuration versioning and history Introduced the Ambari Stacks “Stack Advisor” for configuration validation Introduced Ambari Views Framework for customizable user interfaces
**1.6.0**	2014-05-24	Introduced Ambari Blueprints for automating cluster installs Improved usability guardrails with more host and environment checks Support for PostgreSQL database

参考####

https://hortonworks.com/apache/ambari/#hdfs
https://sanwen8.cn/p/194R2tQ.html
http://ambari.apache.org/