@nadinebh  I recommend you keep reading the available documentation. The Hortonworks Sandbox is somewhat dated by now, but can still be a useful pre-configured version of Hortonworks Data Platform (HDP) for exploration and learning that you can run in the cloud or on your personal machine. Docker is one popular way to support running the Sandbox. There's an extensive set of tutorials on running the HDP Sandbox starting here: Learning the Ropes of the HDP Sandbox The HDP Sandbox comes with Ambari and a fairly complete HDP "stack", including Hive and Spark. You can confirm which versions by reading the HDP release notes. For example, here are the Apache versions of all the HDP 3.0.1 components (the version of HDP will vary with the various releases of the HDP Sandbox): Hortonworks Data Platform - Component Versions As far as downloading the complete HDP Distribution and installing it on one PC running centos7 using Ambari, if you are a beginner, that will be quite challenging for a number of reasons. Before you go too far down that road be sure to read and understand the recent announcement regarding the availability of Ambari and HDP from Cloudera's public repositories here: Transition to private repositories for CDH, HDP and HDF     ... View more

Hi @nileshp  Yes, Apache Ambari "is a completely open source management platform for provisioning, managing, monitoring and securing Apache Hadoop clusters", licensed under the open source Apache License. My understanding is that any source code contributions that Cloudera has made to Ambari are always contributed back to Apache and can therefore be obtained from Apache's source code repository if they can't be retrieved from Cloudera's. Some members of the Cloudera Community have reported success building or upgrading Ambari themselves from source.   When you write that you "used to be able to download freely from public repo but not now", that is because in the early months of 2021 Cloudera modified its download policies and the binaries are now only available in a private repository. Please see the announcement here: Transition to private repositories for CDH, HDP and HDF   However this change in how Cloudera makes binaries available doesn't change the fact that Ambari is an open source project licensed under the the open source Apache License. According to the Frequently Asked Questions list, Is source code behind the paywall? No. Currently, only the binaries are secured behind the paywall.     ... View more

@pravin_speaks  I would again strongly recommend you closely read the announcement I linked to above, Transition to private repositories for CDH, HDP and HDF because it has a section labeled Installing/upgrading Ambari & HDP via Cloudera’s private repository that in turn has links to extensive documentation on how to download and install certain earlier versions of Ambari and HDP; to be specific: Ambari 2.6.x.x and HDP 2.6.5.0 Ambari 2.7.x.x and HDP 3.x.x.x …as far as whether or not earlier "versions of Ambari and HDP can be downloaded if valid access is received from cloudera", that question is addressed in that same announcement, which states:   …new patch releases of …Ambari have been made available and are required to access Cloudera’s private repositories, which now contain these new and existing releases. Versions other than those outlined below will no longer be able to install CDH, HDP or HDF from Cloudera’s public repositories. Emphasis added.      ... View more

Hi @zuoseven , Cloudera recently changed the download policy for legacy CDH binaries and now to download software such as CDH 6.3.3 from Cloudera you need a valid subscription.   Please see the announcement here: Transition to private repositories for CDH, HDP and HDF   Toward the end of that announcement, you will see a section titled Instructions for CDH Customers with hyperlinks to further documentation which explains the credentials and how to properly obtain them if you don't have them already.   If you don't need that specific version of CDH and are just interested in personally learning a data platform, you may still download a Trial Version of CDP Private Cloud.     ... View more

@gwsolutions The short answer: No, I don't know if you will have issues and I can't provide any guidance.   The long answer: I personally would not be comfortable providing anyone any assurances that if they "just" avoid new installations, upgrades, adding new hosts, adding new clusters, or adding new services that they will absolutely not encounter any issues with their existing clusters. In theory, yes, those are the operations that would be affected by the recent private repository implementation , but I am not aware of anyone who has done comprehensive before-and-after testing of legacy versions of Cloudera Manager to prove it.    I also have seen recent reports, both on this site and elsewhere, of Hadoop Administrators doing normal, everyday operations with Cloudera Manager that fail in unexpected ways after Cloudera implemented their private repositories policy because those operations depended upon access to assets on Cloudera's formerly public repositories in highly indirect ways and when that access was blocked, the operations failed in a manner that was difficult to troubleshoot. It could be that the Hadoop Administrators at those sites could have "just" set up local repositories to avoid this happening, but as a practical matter they didn't, so it doesn't matter now because it's too late.   I know this isn't going to help much, but that's what I think.     ... View more

@kirills2006 You can find information on how to access files related to Ambari 2.7.5 from Cloudera's repositories on this page: Accessing Ambari Repositories …and that page also summarizes how to obtain the required authentication credentials for the archive.     ... View more

@indu_thomas If you don't see mention of CDH Director 2.8.1 in the announcement I linked to earlier, then whether or not it will work with private repos is questionable. I personally haven't tried it, and no one I have talked to has tried it, either, and I assume they are all primarily de-motivated to do so by this passage from the aforementioned announcement: …new patch releases of Cloudera Manager and Ambari have been made available and are required to access Cloudera’s private repositories, which now contain these new and existing releases. Versions other than those outlined below will no longer be able to install CDH, HDP or HDF from Cloudera’s public repositories. Customers should strongly consider upgrading to one of the new Cloudera Manager or Ambari releases below as soon as possible, as well as updating any automated installation scripts with repository credentials and/or following the alternative steps described below. Emphasis in the original.   Not having access to your source code for your automation, the only thing I can say about having to redo your automation is that if your automation assumes that it will be able to access binaries from Cloudera's repositories, then it is going to have to access them in the manner described in that document.   Sorry I can't be of more help.     ... View more

@mike_bronson7  I think you will be able to find a helpful, previously-posted answer to a question very similar to yours in this thread: Hortonworks Repositories can't be accessed   Hope this helps.     ... View more

@manojSinghK  I obviously don't have access to your logs to prove it, but I strongly suspect that you haven't encountered the issue you're having now upon service restarting in the past because in the past the repo Ambari is set to retrieve files from was publicly accessible, and now it is not. Since the file retrieval necessary to complete the HDFS client install step fails, it appears as if your existing cluster is being impacted.   If you want your installation of Ambari to continue retrieving files from the location where it appears that you have Ambari set to retrieve them (i.e., Cloudera's repositories) after January 31, 2021, you will have to have a a valid Cloudera Subscription.   Again, please read the announcement here: Transition to private repositories for CDH, HDP and HDF.   The same announcement describes new patch releases of Ambari, which are now required to access Cloudera’s private repositories, which now contain the new and legacy releases and other assets such as those necessary to add a new host to an existing HDP cluster.     ... View more