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Deploy the ExtraHop Explore Appliance in AWS

In this guide, you will learn how to launch the ExtraHop Explore appliance AMI in your Amazon Web Services (AWS) environment, and join multiple Explore appliances to create an Explore cluster.

System requirements

Your environment must meet the following requirements to deploy a virtual Explore appliance in AWS:

  • An AWS account
  • Access to the Amazon Machine Image of the ExtraHop Explore appliance
  • An Explore appliance product key
  • A m4.2xlarge instance type in AWS
  • A datastore size between 186 GiB (200 GB) and 2328 GiB (2.5 TB)
Important:If you want to deploy more than one ExtraHop virtual appliance, create the new instance with the original deployment package or clone an existing instance that has never been started.

Create the Explore instance in AWS

Before you begin

The Amazon Machine Images (AMIs) of ExtraHop appliances are not publicly shared. Before you can start the deployment procedure, you must send your AWS account ID to support@extrahop.com. Your account ID will be linked to the ExtraHop AMIs.
  1. Sign in to AWS with your user name and password.
  2. Click EC2.
  3. In the left navigation panel, under Images, click AMIs.
  4. Above the table of AMIs, change the Filter from Owned by Me to Private Images.
  5. In the filter box, type ExtraHop and then press ENTER.
  6. Select the checkbox next to the ExtraHop Explore appliance AMI and click Launch.
  7. On the Choose an Instance Type page, select m4.2xlarge, and then click Next: Configure Instance Details.
  8. In the Number of instances text box, type the number nodes in your Explore cluster.
  9. Click the Network drop-down list and select the default setting or one of the VPCs for your organization.
  10. From the Shutdown behavior drop-down list, select Stop.
  11. Click the Protect against accidental termination checkbox.
  12. (Optional): Click the IAM role drop-down list and select an IAM role.
  13. (Optional): If you launched into a VPC and want to add more than one interface, scroll down to the Network Interfaces section and click Add Device to add additional interfaces to the instance.
    Note:If you add more than one interface, make sure that each interface is on a different subnet.
  14. Click Next: Add Storage.
  15. In the Size (GiB) field for the root volume, type the size of the storage volume. The minimum datastore size is 186 GiB (200 GB) and the maximum datastore size is 2328 GiB (2.5 TB). If you specify a storage volume greater than 2047 GiB, you can safely ignore any warning messages stating that root volumes of this size might result in the instance not booting successfully.
    Note:Consult with your ExtraHop sales representative or Technical Support to determine the datastore disk size that is best for your needs.
  16. From the Volume Type drop-down menu, select either Magnetic or General Purpose SSD (GP2). You must select General Purpose SSD (GP2) if you specify a size greater than 1024 GiB. GP2 provides better storage performance, although at a higher cost.
  17. Click Next: Tag Instance.
  18. In the Value field, type a name for the instance.
  19. Click Next: Configure Security Group.
  20. On the Configure Security Group page, create a new security group or add ports to an existing group.
    If you already have a security group with the required ports for ExtraHop, you can skip this step.
    1. Select either Create a new security group or Select an existing security group. If you choose to edit an existing group, select the group you want to edit. If you choose to create a new group, type a name for the Security group and type a Description.
    2. Click the Type drop-down list, and select a protocol. Type the port number in the Port Range field.
    3. For each additional port needed, click the Add Rule button. Then click the Type drop-down list, select a protocol, and type the port number in the Port Range field.
      The following ports must be open for the Explore appliance AWS instance:
      • TCP port 443: Enables you to administer the Explore appliance through the Web UI. Requests sent to port 80 are automatically redirected to HTTPS port 443.
      • TCP port 9443: Enables Explore nodes to communicate with other Explore nodes in the same cluster.
  21. Click Review and Launch.
  22. Select Make General Purpose (SSD)...(recommended) and click Next.
    Note:If you select Make General Purpose (SSD)...(recommended), you will not see this step on subsequent instance launches.
  23. Scroll down to review the AMI details, instance type, and security group information, and then click Launch.
  24. In the pop-up window, click the first drop-down list and select Proceed without a key pair.
  25. Click the I acknowledge… checkbox and then click Launch Instance.
  26. Click View Instances to return to the AWS Management Console.

    From the AWS Management Console, you can view your instance on the Initializing screen.

    Under the table, on the Description tab, you can find an IP or hostname for the Explore appliance that is accessible from your environment.

Configure the Explore appliance

After you obtain the IP address for the Explore appliance, log into the Explore Admin UI through the following URL: https://<explore_ip_address>/admin and complete the following recommended procedures.

Register an ExtraHop system in AWS

Complete the following steps to apply a product key supplied by ExtraHop Support in an AWS environment.

If you do not have a product key, contact your ExtraHop account team.

Tip:To verify that your environment can resolve DNS entries for the ExtraHop licensing server, open a terminal application on your Windows, Linux, or Mac OS client and run the following command:
nslookup -type=NS d.extrahop.com
If the name resolution is successful, output similar to the following appears:
Non-authoritative answer:
d.extrahop.com	nameserver = ns0.use.d.extrahop.com.
d.extrahop.com	nameserver = ns0.usw.d.extrahop.com.
  1. In your browser, type the IP address of the ExtraHop appliance (https://<extrahop_management_ip>/admin).
  2. Review the license agreement, select I Agree, and click Submit.
  3. On the log in screen, type setup for the user name and the instance ID for the password.
    You can find the Instance ID on the Description tab of an instance selected on the Initializing screen. Type the string of characters that follow i- (but not i- itself), and then click Log In.
  4. Click Please apply license in Admin UI.
  5. Click Register.
  6. Enter the product key, and then click Register.
  7. Click Done.

Configure the system time

  1. In the Appliance Settings section, click System Time.
  2. Click Configure Time.
  3. Select your time zone from the drop-down list then click Save and Continue.
  4. On the Time Setup page, select one of the following options:
    • Set time manually
    • Set time with NTP server
  5. Select the Set time with NTP server radio button, then click Select.
    The pool.ntp.org public time server appears in the Time Server #1 field by default.
  6. Type the IP address or fully qualified domain name (FQDN) for the time servers in the Time Server fields. You can have up to nine time servers.
    Tip:After adding the fifth time server, click Add Server to display up to four additional timer server fields.
  7. Click Done.

The NTP Status table displays a list of NTP servers that keep the system clock in sync. To sync the current system time a remote server, click the Sync Now button.

Configure email notifications

You must configure an email server and sender before the ExtraHop appliance can send notifications about system alerts by email.

You can receive the following alerts from the system:

  • A virtual disk is in a degraded state.
  • A physical disk is in a degraded state.
  • A physical disk has an increasing error count.
  • A registered Explore node is missing from the cluster. The node might have failed, or is powered off.

Configure the Email Server and Sender settings

  1. In the Network Settings section, click Notifications.
  2. Click Email Server and Sender.
  3. Type the IP address or hostname for the outgoing SMTP mail server in the SMTP Server field.
    Note:The SMTP server should be the fully qualified domain name (FQDN) or IP address of an outgoing mail server that is accessible from the ExtraHop management network. If the DNS server is set, then the SMTP server can be a FQDN, otherwise it needs to be an IP address.
  4. Type the port number for SMTP communication in the SMTP Port field. The default port number is 25.
  5. Select one of the following encryption methods from the Encryption drop-down list:
    • None. SMTP communication is not encrypted.
    • SSL/TLS. SMTP communication is encrypted through the Secure Socket Layer/Transport Layer Security protocol.
    • STARTTLS. SMTP communication is encrypted through STARTTLS.
  6. Type the email address for the notification sender in the Sender Address field.
    Note:The displayed sender address might be changed by the SMTP server. When sending through a Google SMTP server, for example, the sender email is changed to the username supplied for authentication, instead of the originally entered sender address.
  7. Select the Enable SMTP authentication checkbox and then type the SMTP server setup credentials in the Username and Password fields.
  8. Click Save.

Add a recipient email address for notifications

  1. In the Network Settings section, click Notifications.
  2. Under Notifications, click Email Addresses.
  3. In the Email address text box, type the recipient email address.
  4. Click Save.

Create an Explore cluster

If you are deploying more than one Explore appliance, join the appliances together to create a cluster. For optimal performance, we recommend that you set up three or more Explore appliances in a cluster to take advantage of data redundancy.

In the following example, the Explore appliances have the following IP addresses:

  • Node 1: 10.20.227.177
  • Node 2: 10.20.227.178
  • Node 3: 10.20.227.179

You will join nodes 2 and 3 to node 1 to create the Explore cluster.

Important:Each node that you join must have the same configuration (physical or virtual) and ExtraHop firmware version.
  1. Log into the Admin UI of all three Explore appliances with the setup user account in three separate browser windows or tabs.
  2. Select the browser window of node 1.
  3. In the Status and Diagnostics section, click Fingerprint and note the fingerprint value. You will later confirm that the fingerprint for node 1 matches when you join the remaining two nodes.
  4. Select the browser window of node 2.
  5. In the Explore Cluster Settings section, click Join Cluster.
  6. In the Host field, type the hostname or IP address of node 1 and then click Continue.
    Note:For cloud-based deployments, be sure to type the IP address listed in the Interfaces table on the Connectivity page.
  7. Confirm that the fingerprint on this page matches the fingerprint you noted in step 3.
  8. In the Setup Password field, type the password for the node 1 setup user account and then click Join.
    When the join is complete, the Explore Cluster Settings section has two new entries: Explore Cluster Members and Data Management.
  9. Click Explore Cluster Members. You should see node 1 and node 2 in the list.
  10. In the Status and Diagnostics section, click Explore Cluster Status. Wait for the Status field to change to Green before adding the next node.
  11. Repeat steps 5 - 11 to join each additional node to the new cluster.
    Note:To avoid creating multiple clusters, always join a new node to the existing cluster and not to another single appliance.
  12. When you have added all of your Explore appliances to the cluster, click Explore Cluster Members in the Explore Cluster Settings section. You should see all of the joined nodes in the list, similar to the following figure.
  13. In the Explore Cluster Settings section, click Data Management and make sure that Replication Level is set to 1 and Shard Reallocation is ON.

Connect the Explore appliance to Discover and Command appliances

After you deploy the Explore appliance, you must establish a connection from all ExtraHop Discover and Command appliances to the Explore appliance before you can query records.

Important:If you have an Explore cluster of three or more Explore nodes, connect the Discover appliance to each Explore node so that the Discover appliance can distribute the workload across the entire Explore cluster.
Note:If you manage all of your Discover appliances from a Command appliance, you only need to perform this procedure from the Command appliance.
  1. Log into the Admin UI of the Discover or Command appliance .
  2. In the ExtraHop Explore Settings section, click Connect Explore Appliances.
  3. Click Add New.
  4. In the Explore node field, type the hostname or IP address of any Explore appliance in the Explore cluster.
  5. For each additional Explore appliance in the cluster, click Add New and enter the individual hostname or IP address in the corresponding Explore node field.


  6. Click Save.
  7. Confirm that the fingerprint on this page matches the fingerprint of node 1 of the Explore cluster.
  8. In the Explore Setup Password field, type the password for the Explore node 1 setup user account and then click Connect.
  9. When the Explore Cluster settings are saved, click Done.

Next steps

Important:If you only deployed a single Explore appliance, after you connect to your Discover or Command appliance, you must log into the Admin UI on the Explore appliance and set the Explore Cluster Settings > Data Management > Replication Level to 0.

Send record data to the Explore appliance

After your Explore appliance is connected to all of your Discover and Command appliances, you must configure the type of records you want to store. See the following documentation for more information about Explore configuration settings, how to generate and store records, and how to create record queries.

Published 2021-03-03 11:01