Post-install

Configuring DNS Connectivity

To ensure uninterrupted connectivity to the UI, it is recommended to create a DNS entry for the active CipherTrust Manager node and use this entry when configuring the Agents and accessing the CM UI. This way the Agents will be able to reach CM even if its IP address changes.

• Standalone : If the CipherTrust Manager appliance is standalone (not in a cluster), configure a DNS entry with its IP address.

• Clustered : In a CipherTrust Manager cluster, configure a DNS entry with the IP address of the cluster's "active" node. See Identifying the Active DDC Node for details.

Configuring DDC in a CipherTrust Manager Cluster

Although running a DDC cluster is currently not supported, Agents can be deployed into a CipherTrust Manager cluster. In this configuration, one of the CipherTrust Manager nodes, has to be assigned the active DDC node, so all the Agents report to it. This DDC configuration does not support failover, so if the active node fails so will DDC. DDC will not work, as long as the active node is down, so the only way to retain the DDC operations without any data loss is to restore the original active node.

There are two possible scenarios for running DDC in a cluster:

• "Greenfield" deployment: in this scenario DDC is deployed into a completely new environment. See Deploying DDC into a New Environment for more information.

• "Brownfield" deployment: in this scenario DDC is deployed into an existing CipherTrust Manager cluster. See Deploying DDC into an Existing Cluster for more information.

In both these scenarios it is essential to identify the active DDC node as you need an active DDC node for DDC to function in a cluster. For information on assigning the active node and identifying the IP address/hostname of the active node, refer to Assigning the Active DDC Node and Identifying the Active DDC Node.

Deploying DDC into a New Environment

If you are deploying DDC into an environment where there is no existing CipherTrust Manager server that you could connect the Agents to, you have to start by deploying CipherTrust Manager first as you need a running, active CipherTrust Manager server to complete Agents’ installation and configuration. If you’re considering having a CipherTrust Manager cluster at some point, and using the cluster with DDC, you need to plan your deployment ahead and think it out carefully.

It is strongly recommended to create any planned cluster of CipherTrust Manager nodes prior to deploying DDC into it. Creating a CipherTrust Manager cluster out of CipherTrust Manager servers already hosting DDC poses a risk of a loss of data collected by DDC prior to the cluster creation. This is because any new CipherTrust Manager node added to the cluster gets its DDC database wiped out and replaced with a copy of the database of the active node.

This scenario may prove destructive for cases, for example, when you initially planned to have a few independent DDC systems (for example, for monitoring different segments of the network) with unclustered CipherTrust Manager servers but then decided to form a cluster out of them. In such a case, all CipherTrust Manager servers that also act as DDC servers will lose all their DDC data and settings except for the active node.

Deploying DDC into an Existing Cluster

Deploying DDC into an existing CipherTrust Manager cluster is a relatively straightforward task and it should not pose huge problems. After the installation, you just have to make one of the CipherTrust Manager nodes the active DDC node. Next, you have to connect up all the Agents to that active DDC node to complete their configuration.

From then on, the active DDC node will store all the configuration settings in its database. The database of the active node gets replicated over all cluster nodes, so every cluster member has an identical copy of the database. All the copies get synchronized and updated every time new data is inserted into the copy on the active node.

Assigning the Active DDC Node

DDC always requires one active node regardless of the number of CipherTrust Manager nodes (whether it is a single CipherTrust Manager node or a cluster of two or more CipherTrust Manager nodes). It is this active node that the DDC Agents point to (via DNS) and it is only this node that will respond to GUI operations.

To create an active DDC node you have to "earmark" one of the CipherTrust Manager nodes as the active DDC node. This is a manual procedure, which can be performed either through the CipherTrust Manager UI or the command line. In both cases, you have to have the DDC admin rights. The assignment of the active DDC node does not affect the normal CipherTrust Manager cluster operation.

• To assign the active DDC node by using the CipherTrust Manager UI, follow this procedure:

  1. Log in to the CipherTrust Manager node that you want to make the active DDC node.

  2. Click the Data Discovery and Classification link to open the DDC app.

     You should see the "The current node is inactive. The node must be activated to use DDC." message.

  3. Click the Activate button below the message.

     The CipherTrust Manager node becomes the active DDC node.

• To assign the active DDC node by using the CipherTrust Manager command line, you need the ksctl tool installed and configured. For information on installing and configuring the tool, refer to the CLI section in the Data Discovery and Classification Administration Guide.

  Connect to the CipherTrust Manager node that you want to make the active DDC node, and issue this command:

  ksctl ddc active-node register
  

After you assign an active DDC node, you can perform all DDC related tasks through that node. The other nodes - non-active nodes - will not allow you to work with DDC. When you log in to a CipherTrust Manager node that is a non-active DDC node and enter the Data Discovery and Classification application, you will see this message displayed:

You are currently connected to an inactive node. You must switch to the active node <active DDC node IP address> to run DDC.

Identifying the Active DDC Node

In this section, we show how to locate the active node. For this procedure you need the ksctl tool. The tool must be configured to access any of the cluster nodes. For detailed information on installing and configuring the ksctl tool, refer to the CLI section in the Data Discovery and Classification Administration Guide.

To find the IP address of the active CipherTrust Manager node, run this command:

ksctl ddc active-node info

The output shows the IP address of the cluster's active node. Use this IP address to configure a DNS entry for the active CipherTrust Manager. Use that DNS entry to configure the Agents and access the CipherTrust Manager UI.

{
    "public_address": "mycluster.thalesgroup.com",
    "host": "10.45.102.101"
}

If the CipherTrust Manager appliance is not in a cluster, the command returns the following error:

{
    "code": 15,
    "codeDesc": "NCERRBadRequest: Bad HTTP request",
    "message": "oleander is not in cluster mode"
}

In this case, just use the IP address (or DNS entry) of this single CipherTrust Manager node.

Configuring TDP

Before you go on to configure Hadoop Services, a CipherTrust Manager administrator have to add a Hadoop Knox Connection in CipherTrust Manager for your TDP cluster through the Access Management > Connections Management page.

* Knox must also be **DNS addressable**, through a network DNS or by adding the DNS entry as described in [${cm} Administration Guide]({filename}/pages/admin/cm_admin.md) section [Configuring DNS Hosts]({filename}/pages/admin/cm_admin/dns-hosts.md).

Refer to Adding a New Connection for the produre on how to add a new Hadoop Knox Connection.

To configure DDC with TDP, perform the following steps:

1. Type the CipherTrust Manager URL in the browser and log on to the CipherTrust Manager console as the administrator.

2. Click the Data Discovery and Classification tile.

3. In the sidebar on the left, click Settings > Hadoop Services. The Hadoop Services page is displayed. This page contains two tabs - HDFS and Livy.

   Note

   Only the users in the root domain have access to and can modify the Hadoop Services configuration. For more information about domains, refer to Domains.

Configuring TDP service HDFS

1. To configure DDC for HDFS, click the HDFS tab, and configure the following HDFS settings:

   1. Knox Connection: the name of your Hadoop connection as configured in the Connections Management in CipherTrust Manager.

   2. Knox Gateway Hostname / Port: the connection details of the Knox server.

      They are automatically retrieved from the Connections Management on the basis of the Knox Connection name. DDC will try to connect to the first URL from the list retrieved from the Connection Management. In case it cannot connect due to any error, it will fall back to the next URL and so forth. DDC will only error out if it cannot connect to any of the URLs in the list.

      Note

      Make sure that while creating the connection in the Connections Management you use the Knox gateway hostname as returned by the 'hostname' command on the node that is running Knox, not the Fully Qualified Domain Name (FQDN). For example, if the FQDN is "my-tdp-node1-269.sjinternal.com" and the 'hostname' command returns "my-tdp-node1-269", use "my-tdp-node1-269" in the Connections Management. Otherwise, you will get an error when you try to save the HDFS configuration.

      If you make any change in the Knox Connection in Connections Management, you need to reload the configuration and save it.

   3. URI: the path to HDFS as configured in Knox. For example:

      /gateway/default/webhdfs/v1

      where gateway is the Knox bit, default is the topology name, and webhdfs/v1 is the HDFS bit.

      Note

      If you are not using the default topology, use your topology name instead of the default bit in the URI.

   4. Folder: type in the DDC file system directory in HDFS that you created earlier (for example /ciphertrust_ddc).

      IMPORTANT: Use the same directory name as you configured earlier in the Thales Data Platform Deployment Guide.

2. Click Save Changes to save the configuration.

   The connection was successful if no error is returned and this message is displayed:

   Success. HDFS settings have been updated

Configuring TDP service Livy

1. To configure DDC for Livy, click the Livy tab and configure the following connection parameters:

   1. Knox Connection: the name of your Hadoop connection as configured in the Connections Management in CipherTrust Manager.

   2. Knox Gateway Hostname / Port: the connection details of the Knox server.

      They are automatically retrieved from the Connections Management on the basis of the Knox Connection name. DDC will try to connect to the first URL from the list retrieved from the Connection Management. In case it cannot connect due to any error, it will fall back to the next URL and so forth. DDC will only error out if it cannot connect to any of the URLs in the list.

      If you make any change in the Knox Connection in the Connections Management in CipherTrust Manager, you need to reload the configuration and save it.

   3. URI: the path to Livy as configured in Knox. Here is an example:

      /gateway/default/livy/v1

      where gateway is the Knox bit, default is the topology name, and the rest of the URI is the service name.

   Note

   If you are not using the default topology, use your topology name instead of the default bit in the URI.

2. Click Save Changes to save the configuration.