Parameter Reference - SAP NetWeaver on AWS
Global AWS parametersAmazon EC2 instance parametersSAP Instance ParametersPacemaker Parameters

Parameter Reference

The cluster setup relies on the following parameters.

Global AWS parameters

Name Parameter Example

AWS account ID

<account_id>

123456789100

AWS Region

<region_id>

us-east-1

Amazon EC2 instance parameters

Name Parameter Host 1 Host 2

Amazon EC2 instance ID

<instance_id>

i-xxxxinstidforhost1

i-xxxxinstidforhost2

Hostname

<hostname>

rhxhost01

rhxhost02

Host IP

<host_ip>

10.1.10.1

10.1.20.1

Host additional IP

<host_additional_ip>

10.1.10.2

10.1.20.2

Configured subnet

<subnet_id>

subnet-xxxxxxxxxxsubnet1

subnet-xxxxxxxxxxsubnet2

Associated VPC Route Table(s)

<routetable_id>

rtb-xxxxxroutetable1 [,rtb-xxxxxroutetable2]

Sapmnt NFS ID or CNAME

<sapmnt_nfs_id>

fs-xxxxxxxxxxxxxefs1

  • Hostname – Hostnames must comply with SAP requirements outlined in SAP Note 611361 - Hostnames of SAP ABAP Platform servers (requires SAP portal access).

    Run the following command on your instances to retrieve the hostname.

    # hostname

  • Amazon EC2 instance ID – run the following command (IMDSv2 compatible) on your instances to retrieve instance metadata.

    # /usr/bin/curl --noproxy '*' -w "\n" -s -H "X-aws-ec2-metadata-token: $(curl --noproxy '*' -s -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600")" http://169.254.169.254/latest/meta-data/instance-id

    For more details, see Retrieve instance metadata and Instance identity documents.

  • Amazon EC2 subnet ID – run the following command to retrieve the subnet ID for each of your instances.

    # INSTANCE_ID=i-xxxxinstidforhost1
# aws ec2 describe-instances --instance-ids $INSTANCE_ID --query 'Reservations[0].Instances[0].SubnetId' --output text

    For more details, see describe-instances and VPC subnets.

  • Route table(s) for subnets – run the following AWS CLI commands to retrieve the route table(s) associated with both cluster node subnets.

    # SUBNET_ID_1=subnet-xxxxxxxxxxsubnet1
# SUBNET_ID_2=subnet-xxxxxxxxxxsubnet2
# aws ec2 describe-route-tables --filters "Name=association.subnet-id,Values=$SUBNET_ID_1,$SUBNET_ID_2" --query 'RouteTables[].RouteTableId' --output text

    If both cluster nodes are in subnets associated with the same route table, only one route table ID will be returned. If they are associated with different route tables, both route table IDs will be returned.

    For more details, see describe-route-tables and Route tables.

SAP Instance Parameters

Name Parameter Example

SID

<SID> or <sid>

RHX

ASCS Alias

<ascs_virt_hostname>

rhxascs

ASCS System Number

<ascs_sys_nr>

00

ASCS Overlay IP

<ascs_oip>

172.16.1.50

ASCS NFS Mount Point

<ascs_nfs_mount_point>

/RHX_ASCS00

ERS Alias

<ers_virt_hostname>

rhxers

ERS System Number

<ers_sys_nr>

10

ERS Overlay IP

<ers_oip>

172.16.1.51

ERS NFS Mount Point

<ers_nfs_mount_point>

/RHX_ERS10

ENSA Type

<ensa_type>

ENSA2

Pacemaker Parameters

Name Parameter Example

Cluster user

cluster_user

hacluster

Cluster password

cluster_password

Cluster tag

cluster_tag

pacemaker

AWS CLI cluster profile

aws_cli_cluster_profile

cluster

Cluster connector

cluster_connector

sap-redhat-cluster-connector