Using the Incremental Install Function

Use the Incremental Install function of the web-based MapR Installer to control MapR security, add or upgrade services, upgrade MapR Ecosystem Packs (MEPs), and perform other maintenance functions.

Things You Can Do Using the Incremental Install

Using the Incremental Install function, you can:
  • Enable or disable security by using the Enable MapR Secure Cluster option
  • Add services that are supported for your current MEP
  • Apply a patch
  • Delete a service from a cluster by deselecting the service
  • Upgrade the MapR Ecosystem Pack (MEP) to upgrade your services
  • Change a 2-digit MEP to the equivalent 3-digit MEP (see Understanding Two-Digit and Three-Digit MEPs)
Note: Before enabling security using the Incremental Install function, be sure to review the known issue (IN-1084) related to custom certificates. See MapR Installer Known Issues.
You cannot perform the following functions using an Incremental Install:
  • Add a node to a cluster
  • Delete a node from a cluster
  • Upgrade the MapR Core version

Online Versus Offline Operations

Most Incremental Install operations are performed online. However, applying a patch or selecting or deselecting the Enable MapR Secure Cluster option are offline operations. See Using the Enable MapR Secure Cluster Option. Making a change to security requires the MapR Installer to stop the Warden and Zookeeper services, bringing the cluster offline temporarily.

Using Incremental Install

  1. Using a browser, log in to the MapR Installer:
    https://<Installer Node hostname/Ipaddress>:9443
  2. Click the Incremental Install button. The Version & Services page appears.
  3. Make the desired changes to add or remove security, add or delete services, apply a patch, or upgrade the MEP. Then click Next.
  4. Advance through the MapR Installer screens, providing the admin password or other information as needed.
  5. After the Incremental Install finishes, if you added services, use the MCS Services tab or the maprcli service list -node command to ensure that the services are running. If the services are not running, you might need to restart the nodes. For more information, see IN-1332 in MapR Installer Known Issues.