1. What is CDH
Hadoop is an open source project for Apache, so many companies are commercializing this foundation, and Cloudera has made a corresponding change to Hadoop. Cloudera Company's release version of Hadoop, we call this version CDH (Cloudera distribution Hadoop).
Provides the core capabilities of Hadoop
– Scalable Storage
– Distributed Computing
Web-based user interface
Advantages of CDH:
? Clear Version Division
? Faster version update
? Support for Kerberos security authentication
? Clear documentation
? Supports multiple installation methods (Cloudera Manager, YUM, RPM, Tarball)
2. What is cm
Cloudera Manager (CM) is also the product of Cloudera Corporation. Simply put, Cloudera Manager is a cluster of automated installation, centralized management, cluster monitoring, alarm function of a tool (software), so that the time to install the Hadoop cluster is greatly shortened, the number of operations and maintenance personnel greatly reduced, greatly improve the efficiency of cluster management.
Cloudera Manager has four functions:
(1) Management: the management of the cluster, such as adding, deleting nodes and other operations.
(2) Monitoring: Monitoring the health of the cluster, the set of various indicators and system operation of the overall monitoring.
(3) Diagnose: Diagnose the problem of the cluster, give the suggestion solution to the problems that appear.
(4) Integration: Integration of multiple components of Hadoop.
The use of CM can be very convenient and quick to build CDH clusters.
Detailed installation procedures can be seen in the resources of the installation manual.
CDH, let's get a look.
