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New version of Hadoop? Need to upgrade a running PROD Hadoop Environment without losing data? We show you hands on.
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Real World Hadoop – Upgrade Cloudera and Hadoop hands on
Note: This course is built on top of the “Real World Vagrant – Automate a Cloudera Manager Build – Toyin Akin” course. Upgrading Cloudera Manager enables new features of the latest product versions while preserving existing data and settings. Some new settings are added, and some additional steps may be required, but no existing configuration is removed. Upgrading Cloudera ManagerThe process for upgrading Cloudera Manager varies depending on the starting point. Categories of tasks to be completed include the following: Install databases required for the release. In Cloudera Manager 5, the Host Monitor and Service Monitor roles use an internal database that provides greater capacity and flexibility. You do not need to configure an external database for these roles. Upgrade the Cloudera Manager Server. Upgrade the Cloudera Manager Agent. You can use an upgrade wizard that is invoked when you connect to the Admin Console or manually install the Cloudera Manager Agent packages. Upgrading CDHCloudera Manager 5 can manage both CDH 4 and CDH 5. To benefit from the most current CDH features, you must upgrade CDH. Here I present a curriculum as to the current state of my Cloudera courses. My Hadoop courses are based on Vagrant so that you can practice and destroy your virtual environment before applying the installation onto real servers/VMs. For those with little or no knowledge of the Hadoop eco systemUdemy course: Big Data Intro for IT Administrators, Devs and Consultants.I would first practice with Vagrant so that you can carve out a virtual environment on your local desktop. You don’t want to corrupt your physical servers if you do not understand the steps or make a mistake. Udemy course: Real World Vagrant For Distributed Computing.I would then, on the virtual servers, deploy Cloudera Manager plus agents. Agents are the guys that will sit on all the slave nodes ready to deploy your Hadoop servicesUdemy course: Real World Vagrant – Automate a Cloudera Manager Build. Then deploy the Hadoop services across your cluster (via the installed Cloudera Manager in the previous step). We look at the logic regarding the placement of master and slave services. Udemy course: Real World Hadoop – Deploying Hadoop with Cloudera Manager. If you want to play around with HDFS commands (Hands on distributed file manipulation).Udemy course: Real World Hadoop – Hands on Enterprise Distributed Storage. You can also automate the deployment of the Hadoop services via Python (using the Cloudera Manager Python API). But this is an advanced step and thus I would make sure that you understand how to manually deploy the Hadoop services first. Udemy course: Real World Hadoop – Automating Hadoop install with Python. There is also the upgrade step. Once you have a running cluster, how do you upgrade to a newer hadoop cluster (Both for Cloudera Manager and the Hadoop Services).Udemy course: Real World Hadoop – Upgrade Cloudera and Hadoop hands on
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