Install sap virtual hostname

Figure 4: Uncheck the checkbox highlighted to prevent auto registration of IP addresses. Figure 5: Set the IP addresses manually. Note: If you set this properly, you will experience a short disconnection to your RDP session and connect back. If you did not set any of the properties correctly, you will not be able to connect back until the VM is rebooted.

Figure 6: the primary address should show up on the "Advanced" properties window. Figure 7: After adding the secondary IP configuration on the network adapter. Once we complete running the code, the output from the Get-NetAdapter command above should look like this:. Note: This setting would not need a server restart to work.

You can complete all the steps and reboot the machine. Figure validating that reverse lookup works for secondary IP. Figure checking the shares are available by running net view command. To recap the configuration above, here are the 6 basic steps required on the Windows virtual machine to prep it for SAP installation using virtual hostnames with a single network interface:.

Figure After setting SkipAsSource, the interface details. To ensure you have completed these steps correctly you can validate the configuration by:.

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Security, Compliance and Identity. Microsoft Edge Insider. Azure Databases. Autonomous Systems. Education Sector. This depends on the local implementation. It is recommended to put the used Java package together with all the other SAP application service components on the storage system and mount it to the directory which is created especially for this SID.

The implementation could look this way:. The second installation step is the Java Database Installation. For this installation phase the virtual hostname of the database has to be used.

The installation routine sets now all database related configuration to the virtual hostname of the database. The last installation step is the Java Central Instance Installation. Here again the virtual hostname of the Central instance needs to be used.

On each node the following local groups must be available:. For creating the groups and adding the members use the following commands:. For creating the service use the following command:. This can be done during OS deployment, manually or automated before starting the SAP application services. Name-based virtual hosts offer a different approach. In this case, the DNS will resolve all virtual hostnames to one IP address, and Web Dispatcher only listens on the network interface that has this IP address of course, having multiple interfaces and IP addresses is still an option, e.

Web Dispatcher then has to look at the hostname of the request to identify the target system. The value of this header field has to be set to the system ID of the desired target system, based on some information in the request, such as the Host header field.

Web Dispatcher can identify the target system only if it knows the hostname. This causes a problem because the IP address does not uniquely identify the target system, so Web Dispatcher cannot decide where to dispatch such a request.

This last option is only available if there is sufficient information that can uniquely identify the target system. For example, as soon as two systems serve a resource with the exact same name, it is no longer possible to use the URL path alone, e. A completely missing hostname causes similar issues as the use of the IP address. The same three solutions as above are also valid in this case, and a rule to reject such requests would look like this:.

Finally, one last issue should be mentioned. Even the official Web Dispatcher documentation currently contains the following erroneous example:. These rules do not work because of the way Web Dispatcher separates header rules from other rules. All header rules are executed first, followed by all other rules. The [break] statement in a header rule will only terminate the execution of the header rules, but the other rules will still be executed. In the example above, this will lead to a Forbidden response for all requests that match the RegForbiddenUrl rule.

The correct solution to achieve the behaviour intended in the example looks a bit awkward and requires double maintenance of all known hostnames since Web Dispatcher does not support else clauses for its if conditions:.

Name-based virtual hosts require fewer resources e. The modification handler offers sufficient flexibility and functionality to define rules that can identify the correct target system, even if users type in the IP address instead of the hostname, or if the hostname is missing entirely e. This will show you the currently active rules.

If the list of rules is empty although you specified some rules in your text file, there was most likely a syntax error while parsing the file during Web Dispatcher startup. Thank you for the very informative post ; I was about to ask our Windows Administrator to create several IP based virtual hosts , when I discovered your blog and the alternative solution ; name based virtual hosts and usage of modification handlers. I would need to ask for the creation of those three virtual hostnames, which must resolve by the DNS to the IP address of the Web Dispatcher host.

SetHeader x-sap-webdisp-target-sid ECC [break]. SetHeader x-sap-webdisp-target-sid CRM [break]. SetHeader x-sap-webdisp-target-sid EP1 [break]. Hello Tobias,. We want to use IP based virtual host definition with one web dispatcher in a SSL re-encryption scenario.

How do you configure the web dispatcher to use different SSL certificates for their associated unique hostnames? For example, we currently have one web dispatcher and one hostname defined in the web dispatcher configuration using the following parameters. If we add two additional virtual IP hostnames to web dispatcher configuration then how do we account for the new hostname SSL certificates?

Each of these new hostnames has a SSL certificate, how would one web dispatcher configuration account for this? With Web Dispatcher 7. The latter is more secure. Now the good news: Web Dispatcher 7.