Ambari is 100% open source and included in HDP, greatly simplifying installation and initial configuration of Hadoop clusters. In this article we’ll be running through some installation steps to get started with Ambari. Most of the steps here are covered in the main HDP documentation here.
The first order of business is getting Ambari Server itself installed. There are different approaches to this, but for the purposes of this short tour, we’ll assume Ambari is already installed on its own dedicated node somewhere or on one of the nodes on the (future) cluster itself. Instructions can be found under the installation steps linked above. Once Ambari Server is running, the hard work is actually done. Ambari simplifies cluster install and initial configuration with a wizard interface, taking care of it with but a few clicks and decisions from the end user. Hit http://<server_you_installed_ambari>:8080 and log in with admin/admin. Upon logging in, we are greeted with a user-friendly, wizard interface. Welcome to Apache Ambari! Name that cluster and let’s get going.
第一步安装Ambari服务端，我们简单的讲，我们假设Ambari服务端已经成功的安装在专有的节点上，这个节点是集群的一部分。安装方法在上面提到的连接里面。当Ambari服务端运行的时候，负责的工作已经开始了。Ambari提供一个友好的交互入口来简化集群的安装和配置，轻松的操作即可完成配置，具体是，登陆你的节点 http://ip:8080/ 然后使用 admin/admin 登陆系统。登陆后给集群起个名字。
Now we can target hosts for installation with a full listing of host names or regular expressions (in situations when there are many nodes with similar names):
The next step is node registration, with Ambari doing all of the heavy lifting for us. An interface to track progress and drill down into log files is made available:
Upon registration completion, a detailed view of host checks run and options to re-run are also available:
Next, we select which high level components we want for the cluster. Dependency checks are all built in, so no worries about knowing which services are pre-requisites for others:
After service selection, node-specific service assignments are as simple as checking boxes:
This is where some minor typing may be required. Ambari allows simple configuration of the cluster via an easy to use interface, calling out required fields when necessary:
Once configuration has been completed, a review pane is displayed. This is a good point to pause and check for anything that requires adjustment. The Ambari wizard makes that simple. Things look fabulous here, though, so onwards!
Ambari will now execute the actual installation and necessary smoke tests on all nodes in the cluster. Sit back and relax, Ambari will perform the heavy lifting yet again:
If you are itching to get involved, detailed drill-downs are available to monitor progress:
Ambari tracks all progress and activities for you, dynamically updating the interface:
And just like that, we have our Hortonworks Data Platform Cluster up and running, ready for that high priority POC:
Go forth and prosper, my friends. May the (big) data be with you.