Using the MapR Subnet and MapR External Advanced Options

Using the Installer advanced options available under Node Configuration, you can restrict the cluster to a subset of network interface cards (NICs) or specify public IP addresses that can be used with the cluster nodes.

Using these options in the Installer has the same effect as manually inserting the MAPR_SUBNETS and MAPR_EXTERNAL environment variables into the env_override.sh file on all nodes.

Attention: The Installer does not validate the functionality of the subnets or IP addresses that you provide. If you provide incorrect values, it is possible for the installation to succeed initially and later develop connectivity issues. For this reason, it is critical that you supply accurate values for the Installer MapR Subnet and MapR External advanced options.
MapR Subnet
Allows you to set a subnet mask to restrict cluster services to certain interfaces. The values specified in this field are used to populate the MAPR_SUBNETS environment variable.
Specify one or more comma-separated subnet masks. For example:
10.10.15.0/24,10.10.16.0/24

The information on this page is specific to the web-based Installer. To configure the MAPR_SUBNETS environment variable for a manual installation, see Designating NICs for Data-fabric.

MapR External
Allows you to specify external IP addresses for the CLDB, filesystem, and MAST Gateway nodes.
Do NOT use DNS names. Specify a comma-separated list of tuples of host names and external IP addresses. For example:
node1:1.1.1.1,node2:1.1.1.2,node3:1.1.1.3

The specified node names need to match the host name you specified for the host earlier in Node Configuration. The information on this page is specific to the web-based Installer. To configure the MAPR_SUBNETS environment variable for a manual installation, see Designating NICs for Data-fabric.