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This chapter contains the following sections:
You can configure Cisco UCS Director Express for Big Data Bare Metal Agent to have its clock synchronized to an external NTP server. This ensures that the correct calendar time is maintained on the Bare Metal Agent.
Ensure that you synchronize Cisco UCS Director Express for Big Data and Cisco UCS Director Express for Big Data Bare Metal Agent before you deploy any Hadoop cluster. It is recommended that you also synchronize Cisco UCS Manager and Cisco UCS Director Express for Big Data on the configured NTP server.
You can upload Oracle JDK software and use Oracle JDK for all Hadoop distributions (Cloudera, MapR, and Hortonworks) through an instant Hadoop cluster and customized Hadoop cluster creation actions. You can also add new nodes to the existing cluster and support upgrading existing clusters.
Cisco UCS Director Express for Big Data provides an option to add user-defined installation packages (RPMs) post Hadoop cluster creation specific to a version. In Cisco UCS Director Express for Big Data, you cannot install more Hadoop related software other than what is required for the selected type of Hadoop distribution when creating an instant Hadoop cluster or customizing a Hadoop cluster.
To install user-defined Hadoop related software, you can specify a list of RPMs in the HadoopDistributionRPM.txt file. This modifiable list defines the required packages for each version of a Hadoop distribution. You can locate the HadoopDistributionRPM.txt here: /opt/cnsaroot/bigdata_templates/common_templates in the Cisco UCS Director Express for Big Data Bare Metal Agent server.
This procedure is optional.
Note | For a multi-home DHCP configuration, use this procedure to configure the first subnet for the DHCP server. For the remaining subnets, you must manually edit the DHCP configuration file (/etc/dhcpd.conf). |
To provide required DHCP services, ensure that at least one DHCP server is located in the same PXE VLAN as Bare Metal Agent. Configure the DHCP server with an appropriate IP address range. The DHCP server, together with the TFTP server, is used to communicate with a PXE server.
Set up PXE boot requests.
You can use Cisco UCS Director Express for Big Data Bare Metal Agent (Bare Metal Agent) to create and send a request through the DHCP server for a PXE boot for a specified operating system (OS).
Before you can create and send a PXE boot request, the OS image that you want to use in a given PXE boot request must be configured correctly and be available in Bare Metal Agent. If the OS image that you want to PXE boot is not listed as an available OS type, you must first create the OS image template in Bare Metal Agent,
Note | Although you can perform all the OS image setup procedures manually, we recommend that you use Bare Metal Agent to set up your OS images. |
For more information on uploading supported Red Hat Enterprise Linux versions, see Chapter 12, Managing Hadoop and Splunk Clusters in Cisco UCS Director Express for Big Data Management Guide.
Download the following file:
rhel-server-7.2-x86_64-dvd.iso from Red Hat Enterprise Linux
Upgrade Cisco UCS Director to Release 6.0.
If your system is running versions prior to release 5.4, then you must first migrate to Release 5.4, then upgrade to Release 5.5 and then upgrade to Release 6.0. For information on upgrading to release 5.4, see the Cisco UCS Director Release 5.4 Upgrade Guide available at: http://www.cisco.com/c/en/us/support/servers-unified-computing/ucs-director/products-installation-guides-list.html