Apache Ambari 2.4 发布，Hadoop 管理监控

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　　Apache Ambari 2.4 发布了，Apache Ambari是一种基于Web的工具，支持Apache Hadoop集群的供应、管理和监控。Ambari目前已支持大多数Hadoop组件，包括HDFS、MapReduce、Hive、Pig、 Hbase、Zookeper、Sqoop和Hcatalog等。
　　Apache Ambari 支持HDFS、MapReduce、Hive、Pig、Hbase、Zookeper、Sqoop和Hcatalog等的集中管理。也是5个顶级hadoop管理工具之一。
　　该版本一些新特性：
Feature　　Description
　　Improved Host Filtering Control
　　AMBARI-15210
　　Ability to filter hosts using a new host filtering control. Refer to Filtering the Hosts List for more information.
　　Customizing Alert Thresholds
　　AMBARI-14898
　　Ability to configure alert thresholds for SCRIPT alerts. Refer to Alert Types for more information.
　　Setting Alert Check Counts
　　AMBARI-15686
　　Ability to set number of alert checks to perform before dispatching a notification. Refer to                                    Alert Check Counts for more information.
　　Role-based Access Control
　　AMBARI-13977
　　Ability to setup additional cluster operator roles. Refer to Managing Cluster Roles for more information.
　　Remove Service
　　AMBARI-14759
　　Ability to remove a service. Refer to Removing a Service for more information.
　　Version Definition File Support for Registration and Upgrade
　　AMBARI-15724
　　Ability to specify an HDP version (for install/upgrade) via a Version Definition File. Refer                               to Managing Versions for more information.
　　Customizable Ambari Log and PID Directories
　　AMBARI-15300
　　Ability to customize the Ambari Server and Agent Log and PID directories. Refer to Customizing Ambari Log + PID Directories for more                               information.
　　Automated Ambari Server Kerberos Setup
　　AMBARI-15561
　　If you enable Kerberos using the Automated Setup option, Ambari Server will also get the                               requisite principal and keytab automatically. Refer to the Ambari Security Guide for more information.
　　Customizable Agent Registration SSH Port
　　AMBARI-13450
　　When adding hosts to the cluster, and choosing Agent registration via SSH, you can now customize the SSH port to use.
　　Views Framework: View URLs
　　AMBARI-15821
　　Ability to create view instance short URLs. Refer to the Ambari Admin Guide for more information.
　　Views Framework: View Refresh
　　AMBARI-15682
　　Ability to deploy new views without an Ambari Server restart.
　　Views Framework: Inherit Cluster Permissions
　　AMBARI-16177
　　If you configure a view instance to use a Local Cluster, you can optionally choose to inherit                               view USE permission based on the cluster roles. Refer to the Ambari Admin Guide for more information.
　　Views Framework: Remote Cluster Configuration
　　AMBARI-16274
　　Ability to configure a view instance based on a Remote Cluster (that is Ambari-managed). Refer                               to the Ambari Admin Guide for more information.
　　Log Search
　　AMBARI-14827
　　Ambari includes a new “Log Search” service that can be installed into your cluster. Refer to                                    Ambari Log Search for more information.
　　This feature is Technical                               Preview.
　　SLES 12 SP1
　　AMBARI-16007
　　Added support for installing and running Ambari on
　　SUSE Linux Enterprise Server (SLES) v12 SP1
　　下载地址：https://cwiki.apache.org/confluence/display/AMBARI/Installation+Guide+for+Ambari+2.4.0