Microsoft Power BI desktop is free and is able to successfully connect to a Cloudera Impala or hive database with Kerberos security enabled.
The below blog only shows Impala driver but you can use same procedure with Hive driver also. View all posts by plenium. Hi, thank you for the great article. Could I ask you, if you have any idea how to solve it?
ODBC test is successful but an error with dll still occur. You have the check all the 32bit or 64bit versions.
If not present it may need to be appended to the PATH environment variable. Then I checked the paths and it was ok too. Then I tried to reinstall PowerBI again. Thank you very much for your help. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email.
This site uses Akismet to reduce spam. Learn how your comment data is processed. Skip to content. Test the connect if successful otherwise it wont work. Make sure you got a new kerberos ticket in the MIT Kerberos client using your userid and password. Rate this:. Share this: Twitter Facebook.However, we keep getting an error:. Support Questions. Find answers, ask questions, and share your expertise.
Turn on suggestions. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for. Search instead for. Did you mean:. Error from the Alert: Welcome to the Unified Cloudera Community. Former HCC members be sure to read and learn how to activate your account here. All forum topics Previous Next. ODBC connection to Impala failing.
Labels: Impala. Or the IP of one of the Impala Deamons? Should the port for Impala Deamon HiveServer2 be used? Which authentication mechanism should we use? What about SSL? Again, can I find this somewhere in Hue or Cloudera Manager? Is there anything else that we should be doing? Reply 6, Views. I needs to be on of the Impala daemons. They will act as the connection manager, coordinator, and still execute queries. The latter should beby default. Use the auth. Since you have CM access, you should be able to review the CM configs.
You can also verify the port and the hostnames of the Impala daemons. Already a User? Sign In. Don't have an account? Coming from Hortonworks? Activate your account here.For the best experience, ensure any third-party product you intend to use is supported. Verifying support includes checking that the versions of Impala, ODBC, the operating system, and the third-party product have all been approved for use together.
Before configuring your systems to use ODBC, download a connector. You may need to sign in and accept license agreements before accessing the pages required for downloading ODBC connectors. See the database drivers section on the Cloudera downloads web page to download and install the driver.
Versions 2. Impala supports Kerberos authentication with all the supported versions of the driver, and requires ODBC 2. Version 1. To illustrate the outline of the setup process, here is a transcript of a session to set up all required drivers and a business intelligence application that uses the ODBC driver, under Mac OS X.
The following are some exceptions to keep in mind when switching between the interactive shell and applications using the APIs:. View All Categories.
Powerful Cloudera Impala ODBC driver
Post-Installation Configuration for Impala.The following sections provide information about each open-source project that MapR supports. The following sections provide information about accessing MapR Filesystem with C and Java applications. This section contains information about developing client applications for JSON and binary tables. This section contains information associated with developing YARN applications. The MapR Data Science Refinery is an easy-to-deploy and scalable data science toolkit with native access to all platform assets and superior out-of-the-box security.
Only one version of each ecosystem component is available in each MEP. This section discusses topics associated with Maven and MapR. This section contains in-depth information for the developer. These APIs are available for application-development purposes. Before you can use Active Directory Kerberos on Windows, the following prerequisites must be met:.
Download for bit Computers. To download the Kerberos installer for bit computers, use the following download link from the MIT Kerberos website:. Settings for Kerberos are specified through a configuration file. You can set up the configuration file as a. Consult your Windows documentation if you want to view and use this hidden directory. Setup in the Default Location. To set up the Kerberos configuration file in the default location, obtain the krb5. Note: krb5cache is a file not a directory that is managed by the Kerberos software, and it should not be created by the user.
If you receive a permission error when you first use Kerberos, ensure that krb5cache does not already exist as a file or a directory. Obtain a Ticket Using a Password. Obtain a Ticket Using a keytab File. In the command, the -c argument must appear last. For example:. Note: krbcache is the Kerberos cache file, not a directory. Obtain a Ticket Using the Default keytab File. Note: For instructions on configuring a default keytab file for your Kerberos configuration, consult the MIT Kerberos documentation.
In the command, the. About MapR 6. Home 6. Ecosystem Components The following sections provide information about each open-source project that MapR supports. MapR 6. Search current doc version.To access your data stored on an Cloudera Impala database, you will need to know the server and database name that you want to connect to, and you must have access credentials.
Once you have created a connection to an Cloudera Impala database, you can select data from the available tables and then load that data into your app or document. Any time the connection properties are changed, the password for the Delegation UID must be reentered to test or save the changes to the connection. Select the format of the single sign-on SSO user name that is used when the name is passed to the Cloudera Impala server.
Select the case sensitivity for the single sign-on SSO user name that is used when the name is passed to the Cloudera Impala server. The user ID to use for scheduled, automatic reloads. If a Delegation UID is specified, user password is required each time a connection is created or edited, to verify the access to delegation credentials. Password for the Cloudera Impala connection. Thanks for letting us know. Is there anything you'd like to tell us about this topic?
Can you tell us why it did not help you and how we can improve it? Search for topics and videos. QlikWorld online Free global virtual event for data integration and data analytic gurus QlikView Create a Cloudera Impala connection To access your data stored on an Cloudera Impala database, you will need to know the server and database name that you want to connect to, and you must have access credentials.
Setting up the database properties Property Description Required Host name Host name to identify the location of the Cloudera Impala database. Yes Port Server port for the Cloudera Impala database. Yes Database The name of the Cloudera Impala database. Note: When a connection is created or edited with Single Sign-On selected, the connection uses the credentials of the user who is currently logged into Qlik Sense.
Note: Because scheduled reloads are performed under a system account instead of a real user, Single Sign-On may not be necessary. The scheduled reloads can be performed using predefined NTLM authentication.
Property Description Mechanism Require user name and password, or allow connection without user name and password authentication. Username User name for the Cloudera Impala connection.
Password Password for the Cloudera Impala connection. Transport Buffer Size The number of bytes to reserve in memory for buffering unencrypted data from the network. In most cases, the default value is optimal.
This property can be used only when User Name and Password mechanism is selected. This property can be selected only when SSL is enabled. This check works if the trusted CA supports certificate revocation. Property Description Query timeout Amount of time before a data load query times out.Enable Kerberos on Cloudera 5.16 (CDH)
Can be set from 30 seconds to seconds. Property Description Required Name Name of additional properties. You can add more than one additional properties. No Value Value of additional properties. Note: When you connect to an Cloudera Impala database with the Data load editor or the Edit Script dialog, Test Connection enables you to test the connection before you attempt to create it.
Did this information help you? Yes No. Send feedback. Host name to identify the location of the Cloudera Impala database. Server port for the Cloudera Impala database. The name of the Cloudera Impala database.Learn how to configure your report server for Kerberos authentication to data sources used within your Power BI reports for a distributed environment.
Many data sources are supported by your report server. This is great for a test environment. You may hit errors if you have these services installed on separate machines which is called a distributed environment.
In this environment, you are required to use Kerberos authentication. There is configuration required to implement this.
Specifically, you will need to configure constrained delegation. You may have Kerberos configured in your environment but it may not be configured for constrained delegation. There are several items that need to be configured in order for Kerberos constrained delegation to work.
We need to configure the authentication type for the report server to allow for Kerberos constrained delegation. This is done within the rsreportserver. Within the rsreportserver. We want to make sure that RSWindowsNegotiate is listed and the first in the list of authentication types.
It should look similar to the following. If you had to change the configuration file, you will want to stop and start the report server to make sure the changes take effect. Next, we need to make sure that the report server has valid SPNs available. This is based on the service account that is configured for the report server. If your report server is configured for the Virtual Service Account or Network Service account, you should not have to do anything. These are in the context of the machine account.
These will cover the HTTP service and will be used by the report server. If you are using a virtual server name, one that is not same as the machine account, the HOST entries will not cover you and you will need to manually add the SPNs for the virtual server host name.
This can be done using the setspn tool that comes with Windows. It is recommended to create two SPNs. The SPN will be in the following format. The service we are interested in here is HTTP. Typically, this is the machine name. If you are behind a load balancer, this may be a virtual name. So, where do you put the SPN? The SPN will be placed on whatever you are using for your service account.
Although we mentioned before you should only need to do this for a virtual URL. If you are using a domain user for the report server service account, then you will place the SPN on that domain user account.Connection keeps getting Kerberos related error messages.
Like below:. Minor code may provide more information Credential cache is empty. Minor code may provide more information No credentials cache found. To help CDH users to get it working without much hassle, I would like to compile a list of steps below for reference.
I have tested this in my VM Windows For Kerberos authentication to work, you need to get a valid Kerberos ticket on your client machine, which is Windows In order for client machine to talk to remote KDC server that contains principal database, we need a valid krb5 configuration file on client side.
Please copy the krb5. Please be aware that the file name in Windows should be krb5. Make sure that you connect to correct port number, for Hive, it is normally by default. For Impala, it should beNOTwhich is used by impala-shell. If you have Load Balancer setup for either Hive or Impala, then the port number could also be different, please consult with your system admin to get the correct port number if this is the case.
To do so, please follow steps below:. That should be it.
Subscribe to RSS
If you have encountered other problems that need extra steps, please leave a comment below and I will update my post. Your email address will not be published. Save my name, email, and site URL in my browser for next time I post a comment.
Leave a Reply Cancel reply Your email address will not be published.