Big Data Cloud Service Frequently Asked Questions (FAQ)
(Doc ID 2130171.1)
Last updated on MAY 17, 2021
Applies to:
Big Data Cloud Service - Version 1.0 and laterLinux x86-64
Purpose
Provide external FAQ for Big Data Cloud Service (BDCS) issues.
Questions and Answers
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In this Document
Purpose |
Questions and Answers |
How does dcli work on DomU vs Dom0? |
Are hardware related commands are run from Dom0? |
What about disk configuration? Where is that done? |
Does Oracle BDCS use rotational HDD or SSD? |
If HDD is used, why does the command "lsblk -d -o name,rota" show ROTA as "0" instead of "1"? |
What about OS versions? |
Can there be client/edge nodes to the cluster? |
What image is on the VMs? |
What does the output from the 'mount' command look like in DomU? |
What does bdacheckhw look like in DomU? |
What does bdachecksw look like in DomU? |
Can you run bdacli getinfo commands on DomU? |
What does "./mammoth -c" output look like? |
Can port 80 be opened for installed apps on V1 servers? |
If it is required that a new port be opened, what is the procedure to do that? |
Do firewall ports need to be open between a BDCS environment and an Active Directory server? |
If CM can not be accessed in BDCS what can be done? |
What if Cloudera Manager displays no status for any service? |
If it is not possible to connect using SSH or Putty what can be done? |
What else is known about the BDCS network allowlist? |
Does ODBC connectivity to HiveServer2 require opening port 10000? |
In the BDCS environment is the expectation that the Hue login be the same as the login to CM? |
How can you access Spark from the Cloudera Manager console in a BDCS environment. |
How is upgrade from BDA V4.2.1 to BDA 4.4.0 done? |
Should the Hive Gateway be in an "Active" state in CM? |
How can a trusted certificate be obtained for the Oracle Cloud Cluster? |
What is the best way to move data from HDFS on a BDCS cluster to cloud storage? |
What is the size limit for distcp copies? |
How it is possible to transfer 5GB? It seems like there is a failure at around 4.8GB transfers? |
What is the best method to ensure that the data is copied with out any corruption? |
When moving data from HDFS on a BDCS cluter to cloud storage is there an expectation that there would be a bottleneck at the destination site? |
Where can I find information on Troubleshooting swift? |
When copying to Cloud Storage can we can take advantage of the Upload CLI tool? |
Where would I get the Upload CLI Tool to evaluate it? |
Since the Upload CLI Tool is not HDFS aware is it possible to workaround this by using Fuse/HDFS NFS Gateway? |
Can an HDFS NFS Gateway run on a node if a Linux NFS server is running on a node? |
In a BDCS Mammoth 4.5 environment can bdacli enable/disable be used as in the on-premise environment? |
Does this mean that in BDCS Mammoth 4.5 environment that 'bdacli enable Kerberos' can not be used to enable Kerberos/Sentry after provisioning without Kerberos support? |
Does this mean that in a BDCS Mammoth 4.5 environment that bdacli can not be used to enable hdfs transparent encryption as well? |
Is the policy to install software on BDCS as same as BDA ? |
Where can I find information about using the hadoop client parallelize copying? |
Is Solr included in BDCS? |
Is it possible to install third party software on BDCS? |
Can Apache Zeppelin Helium be installed on a BDCS cluster? |
Is it possible to use the Rest API with Zeppelin Notebooks? |
What information is available on BDCS nodes - Permanent vs Compute? |
What information is available on adding permanent or bursting nodes to a BDCS cluster? |
Is there any problem rebooting a node in the BDCS environment? |
On BDCS where are the instructions for provisioning VPN? |
Is it possible to deploy a custom web service application on BDCS which needs to be accessed from outside the BDCS environment without enabling VPN? |
If a cluster provision fails on setup but then completes is there a concern that the cluster is not created correctly? |
Questions about Kerberos Principals |
Should the hdfs/clustername and oracle/clustername principals be created by default in a BDCS cluster? |
Is it safe to create either oracle/clustername or hdfs/clustername if they are required? |
What about the principal oracle@<REALM_NAME> which is shown with listprincs on a BDCS 4.7.3 cluster? |
If an hdfs principal is created manually does it lack any functionality that the Cloudera created hdfs principals have? |
If the CM password for this principal, hdfs/<CLUSTERNAME>@BDACLOUDSERVICE.ORACLE.COM, is not working can a new one be issued? |
Is it possible to kinit Cloudera Manager created principals with the CM admin password in a BDCS environment? |
In this environment is there a default password for the oracle user? |
Is installing Docker on BDCS nodes supported? |
Is it possible then to install OL7 on BDCS clusters? |
Questions about ODI on BDCS |
Is the ODIAgent already deployed on the BDCS cluster? If not, on which node should weblogic+ODIAgent be installed? |
Does the Agent have to be deployed on all nodes if Hive and HDFS are going to be used? Or is deploying it on 1 node sufficient? |
Does BDCS include an Oracle DB in which the metadata repository can be created? |
Can ODI that comes with BDCS be upgraded to a newer version e.g. (12.2.1.2.6)? |
Is there any note or technical brief or how to, to do tuning activities on MySQL database that comes with BDCS? |
References |