| Ambari |
| ====== |
| |
| - Ambari provides the GUI frontend that would help users install, manage and monitor the Hadoop cluster. |
| - It uses CSS, Javascript, and HTML on client side. We use the existing proven |
| open-source technologies in the backend e.g. PHP, Puppet for deploying and |
| configuring the Hadoop services, Nagios & Ganglia for monitoring alerts and |
| metrics graphs respectively. |
| |
| Getting Ambari |
| ============== |
| |
| The source can be checked out anonymously from SVN with this command: |
| |
| $ svn checkout http://svn.apache.org/viewvc/incubator/ambari/branches/ambari-186 ambari |
| |
| How to build Ambari |
| =================== |
| |
| You need to build a AMBARI rpm from the source code that you checkout above: |
| |
| $ yum install rpm-build |
| |
| $ cd hmc; // The new directory structure |
| |
| $ cd package/rpm |
| |
| $ ./create_hmc_rpm.sh |
| |
| When it succeeds, you will find two RPMs inside the build directory package/rpm/build/rpmbuild/RPMS/noarch/: |
| |
| 1) ambari-1.0.0-1.noarch.rpm |
| |
| 2) ambari-agent-1.0.0-1.noarch.rpm |
| |
| Steps to run before you use Ambari for installing Hadoop on your cluster |
| ======================================================================== |
| |
| The node on which you will run the Ambari web-server will be henceforth referred |
| to as Ambari master and the nodes which will be used to run Hadoop software will |
| be called as cluster nodes. |
| |
| 1) Set up password-less SSH for root to all your cluster nodes. |
| |
| - Make sure you copy root's ssh public keys to all the cluster hosts. |
| |
| - You will have to copy the ssh private key to the Ambari node for installing |
| Hadoop on your cluster nodes from the UI. |
| |
| Make sure you copy root's ssh public keys to all the cluster hosts. |
| You will have to copy the ssh private key to your desktop for later use in the UI. |
| |
| 2) Install the above built ambari-agent-1.0.0-1.noarch.rpm on each of the nodes by running |
| |
| $ sudo rpm -Uvh ambari-agent-1.0.0-1.noarch.rpm |
| |
| 3) Stop ip-tables on your Ambari master: |
| |
| $ sudo service iptables stop |
| |
| How to install Ambari |
| ===================== |
| |
| Ambari has few external runtime dependencies, most important of which are |
| |
| 1) puppet |
| |
| 2) php |
| |
| 3) ruby |
| |
| To simplify the installation of dependencies, you need to enable the following |
| yum repos. For that, you can simply install the corresponding RPMs. |
| |
| 1) EPEL repo |
| |
| 2) Puppet passenger |
| |
| 3) Hadoop repo |
| |
| So, you should do the following at the command line: |
| |
| $ sudo rpm -Uvh http://download.fedoraproject.org/pub/epel/5/[i386|x86_64]/epel-release-5-4.noarch.rpm |
| |
| $ sudo rpm -Uvh http://passenger.stealthymonkeys.com/rhel/5/passenger-release.noarch.rpm |
| |
| $ sudo rpm -Uvh http://public-repo-1.hortonworks.com/HDP-1.0.13/repos/centos5/hdp-release-1.0.13-1.el5.noarch.rpm |
| |
| Now, to install ambari-rpms |
| |
| $ sudo yum install php-pecl-json (version 1.2.1 compatible with php-5.1 or php-5.2) |
| |
| $ sudo rpm -iv ambari-1.0.0-1.noarch.rpm |
| |
| Hadoop required JDK, so you can download it from the Oracle website |
| http://download.oracle.com/otn-pub/java/jdk/6u26-b03 . Ambari needs the following |
| two files to be available on the Ambari master node under /var/run/hmc/downloads/ |
| : |
| |
| 1) jdk-6u26-linux-x64.bin |
| |
| 2) jdk-6u26-linux-i586.bin |
| |
| How to run Ambari |
| ================= |
| |
| $ sudo service ambari start |
| |
| You have installed ambari by now. You can start deploying Apache Hadoop and |
| ecosystem components on your cluster nodes by visiting: |
| |
| http://AMBARIMASTER/hmc/html/index.php |
