Considering the potential failover/takeover for site1 and site2, that is, site1 and site2 actually should have the same position. global.ini -> [system_replication_communication] -> listeninterface : .global or .internal Network Configuration for SAP HANA System Replication (HSR) You can configure additional network interfaces and security groups to further isolate inter-node communication as well as SAP HSR network traffic. For more information about how to create a new # 2021/04/26 added PIN/passphrase option for sapgenpse seclogin To detect, manage, and monitor SAP HANA as a
Contact us. It must have the same number of nodes and worker hosts. The host name specified here is used to verify the identity of the server instead of the host name with which the connection was established. For the section [system_replication_hostname_resolution], you can add either all hosts or neighboring sites, but I am going to add only neighboring sites in order to remove all the configuration conflicts in below examples. We are not talking about self-signed certificates. Scale-out and System Replication(2 tiers), 4. Multiple interfaces => one or multiple labels (n:m). If you have a HANA on one server construct which means an additional application server running with the central services running together with the HDB on the same server. Stopped the Replication to TIER2 and TIER3 and removed them from the system replication configuration In the following example, ENI-1 of each instance shown is a member enables you to isolate the traffic required for each communication channel. The host and port information are that of the SAP HANA dynamic tiering host. Check also the saphostctrl functionality for the monitoring: 2621457 hdbconnectivity failure after upgrade to 2.0, 2629520 Error : hdbconnectivity (HDB Connectivity), Status: Error (SQLconnect not possible (no hdbuserstore entry found)) While SAP Host Agent is not working correctly Solution Manager 7.2, Managed systems maintenance guide preparing databases. is deployed. SAP HANA Network and Communication Security, 2478769 Obtaining certificates with subject Alternative Name (SAN) within STRUST, 2487639 HANA Basic How-To Series HANA and SSL MASTER KBA, Darryl Griffiths Blog from 2014 SAP HANA SSL Security Essential, Certificate chain (multiple certificates in one file), cryptography toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) network protocols. SAP HANA supports asynchronous and synchronous replication modes. In my opinion, the described configuration is only needed below situations. Application Server, SAP HANA Extended Application Services (XS), and SAP HANA Studio, Internal zone to communicate with hosts in a distributed SAP HANA system as After TIER2 full sync completed, triggered the TIER3 full sync But still some more options e.g. By default, this enables security and forces all resources to use ssl. Above configurations are only required when you have internal networks. You comply all prerequisites for SAP HANA system
Since quite a while SAP recommends using virtual hostnames. You can also encrypt the communication for HSR (HANA System replication). Using command line tool hdbnsutil: Primary : system. Persistence encryption of the SAP HANA system is not available when dynamic tiering is installed. the global.ini file is set to normal for both systems. In particolare, la configurazione usa la replica di sistema HANA (HSR) e Pacemaker in macchine virtuali Linux (VM) di Azure Red Hat Enterprise. SAP Real Time Extension: Solution Overview. ENI-3 It Therefore, I would highly recommend to stick with the default value .global in the parameter [system_replication_communication]->listeninterface. Replication, Register Secondary Tier for System
* as internal network as described below picture. (more details in 8.) The below diagram depicts better understanding of internal networks: The status after internal network configuration: Once the listener interface has communication method internal, the two hosts (HANA & DT hosts) can communicate securely and their internal IP addresses reflects in parameter -> internal_hostname_resolution, Installation of Dynamic Tiering Component. 1. The change data for the parameters ssfs_masterkey_changed and ssfs_masterkey_systempki_changed archived in the view SYS.M_HOST_INFORMATION is changed. thank you for this very valuable blog series! of the same security group that controls inbound and outbound network traffic for the client This section describes operations that are available for SAP HANA instances. To change the TLS version and the ciphers for the XSA you have to edit the xscontroller.ini. This is mentioned as a little note in SAP note 2300943 section 4. If you change the HANA hostname resolution, you will map the physical hostname which represents your default gateway to the original installed vhostname. The truth is that most of the customers have multiple interfaces, with multiple service labels with different network zones and domains. There can be only one dynamic tiering worker host for theesserver process. (3) site3 is still registered to the site2 (as it's not impacted, async only as remote DR); How you can secure your system with less effort? As you may read between the lines Im not a fan of authorization concepts. And you need to change the parameter [communication]->listeninterface to .internal and add internal network entries as followings. Single node and System Replication(2 tiers), 2. Pipeline End-to-End Overview. global.ini -> [system_replication_hostname_resolution] : User Action: Investigate why connections are closed (for example, network problem) and resolve the issue. The parameter listeninterface=.global in the section [system_replication_communication] is used for system replication. You use this service to create the extended store and extended tables. After the dynamic tiering component has been installed on HANA system, start with addition of worker DT host, by running hdblcm from worker DT node. All tenant databases running dynamic tiering share the single dynamic tiering license. Source: SAP 1.2 SolMan communication Host Agent / DAA => SolMan SLD (HTTPS) => SolMan It is now possible to deactivate the SLD and using the LMDB as leading data collection system. 1761693 Additional CONNECT options for SAP HANA On AS ABAP server this is controlled by is/local_addr parameter. Run hdblcm (with root) with the path of extracted software as parameter and install dynamic tiering component without addition of DT host. General Prerequisites for Configuring SAP
You can use the SQL script collection from note 1969700 to do this. In Figure 10, ENI-2 is has its interfaces similar to the source environment, and ENI-3 would share a common security group. Figure 11: Network interfaces and security groups. Before we get started, let me define the term of network used in HANA. Please note that SAP HANA Dynamic Tiering ("DT") is in maintenance only mode and is not recommended for new implementations. The values are visible in the global.ini file of the tenant database but cannot be modified from the tenant database. # 2021/03/18 Inserted XSA high security Kudos out to Patrick Heynen Following parameters is set after configuring internal network between hosts. Alerting is not available for unauthorized users, Right click and copy the link to share this comment, can consider changing for internal network, Public communication channel configurations, Internal communication channel configurations(Scale-out & System Replication), external(public) network : Channels used for external access to SAP HANA functionality by end-user clients, administration clients, application servers, and for data provisioning via SQL or HTTP, internal network : Channels used for SAP HANA internal communication within the database or, in a distributed scenario, for communication between hosts, This option does not require an internal network address entry.(Default). Internal communication channel configurations(Scale-out & System Replication). system, your high-availability solution has to support client connection
Visit SAP Support Portal's SAP Notes and KBA Search. Storage snapshots cannot be prepared in SAP HANA systems in which dynamic tiering is enabled. The XSA can be offline, but will be restarted (thanks for the hint Dennis). This note well describes the sequence of (un)registering/(re)registering when operating replication and upgrade. 2685661 - Licensing Required for HANA System Replication. Stops checking the replication status share. These are all pretty broad topic and for now we will focus on the x.509 certificates for encryption of the communication channels between server and clients. If you use a PIN/passphrase keep in mind that you have to use sapgenpse seclogin option to create the cred_v2 file inside the SECUDIR: Sign the certificate signing request with a trusted Certificate Authority (CA) as pkcs7 which will include all CA certificates. You may choose to manage your own preferences. Tip: use the integrated port reservation of the Host agent for all of your services, Possible values are: HANA,HANAREP,XSA,ABAP,J2EE,SUITE,ETD,MDM,SYBASE,MAXDB,ORACLE,DB2,TREX,CONTENTSRV,BO,B1, 401162 Linux: Avoiding TCP/IP port conflicts and start problems. * as public network and 192.168.1. The cleanest way is the Golden middle option 2. Be careful with setting these parameters! Privacy |
Another thing is the maintainability of the certificates. It also means for SAP Note 2386973, the original multitier setup is(SiteA --sync--> SiteB --async--> SiteC), after step 9, the setup is most likely (SiteB--async-->SiteC; SiteA down), and the target multitier setup is (SiteB --sync--> SiteA --async--> SiteC), and then the steps 15-19 can be skipped, and adjusted steps 20-22, to registered SiteC to SiteA. We continue to fully maintain the SP05 version and deliver PL releases as necessary but there are no plans to release newer SP versions for DT. connect string to skip hostname validation: As always you can create an own certificate for the client and copy it to sapcli.pse instead of using the server sapsrv.pse. Starts checking the replication status share. received on the loaded tables. If set on the primary system, the loaded table information is
Alerting is not available for unauthorized users, Right click and copy the link to share this comment. Understood More Information Thanks DongKyun for sharing this through this nice post. We are talk about signed certificates from a trusted root-CA. Dynamic tiering option can be deployed in two ways: You can install SAP HANA and SAP HANA dynamic tiering each on a dedicated server (referred to as a dedicated host deployment) or on the same server (referred to as a same host deployment). HANA System Replication, SAP HANA System Replication
We can install DLM using Hana lifecycle manager as described below: Click on to be configured. Maybe you are now asking for this two green boxes. Operators Detail, SAP Data Intelligence. Is it possible to switch a tenant to another systemDB without changing all of your client connections? If this is not possible, because it is a mounted NFS share,
In HANA studio this process corresponds to esserver service. 3. Scale-out and System Replication(3 tiers). You have installed and configured two identical, independently-operational. For details, you could have reference on the guide "How to perform How To Perform System Replication for SAP HANA". In Figure 10, ENI-2 is has its own security group (not shown) to secure client traffic from inter-node communication. Primary Host: Enable system replication. In this case, you are required to add additional NIC, ip address and cabling for site1-3 replication. Refresh the page and To Be Configured would change to Properly Configured. The additional process hdbesserver can be seen which confirms that Dynamic-Tiering worker has been successfully installed. Only one dynamic tiering license is allowed per SAP HANA system. need not be available on the secondary system. You can also create an own certificate based on the server name of the application (Tier 3). the same host is not supported. The extended store can reduce the size of your in-memory database. Tertiary Tier in Multitier System Replication, Operations for SAP HANA Systems and Instances, Enable / Disable Fullsync System
Or see our complete list of local country numbers. Early Watch Alert shows a red alert at section " SAP HANA Network Settings for System Replication Communication (listeninterface) ": SAP Knowledge Base Article - Preview 2777802-EWA Alert: TLS encrypted communication expected (when listeninterface = .global) Symptom The last step is the activation of the System Monitoring. Step 1. After a validation on the non prod systems the change was made on our Production landscape that is using the HANA System Replication (HSR) If you answer one of the questions negative you should wait for the second part of this series , ########### Net2Source Inc. is an award-winning total workforce solutions company recognized by Staffing Industry Analysts for our accelerated growth of 300% in the last 3 years with over 5500+ employees . Network for internal SAP HANA communication: 192.168.1. For each server you can add an own IP label to be flexible. Check all connecting interfaces for it. Use Secure Shell (SSH) to connect to your EC2 instance at the OS level. License is generated on the basis of Main memory in Dynamic Tiering by choosing License type as mentioned below. In the step 5, it is possible to avoid exporting and converting the keys. SQLDBC is the basis for most interfaces; however, it is not used directly by applications. Applications, including utility programs, SAP applications, third-party applications and customized applications, must use an SAP HANA interface to access SAP HANA. I have not come across much documentation on this topic and not sure if any customer experienced such a behavior so put up a post to describe the scenario SAP Host Agent must be able to write to the operations.d
# 2021/09/09 updated parameter info: is/local_addr thx @ Matthias Sander for the hint operations or SAP HANA processes as required. (Addition of DT worker host can be performed later). Instance-specific metrics are basically metrics that can be specified "by . Share, Unregister Secondary Tier from System Replication, Unregister System Replication Site on
(Storage API is required only for auto failover mechanism). Follow the For your information, having internal networks under scale-out / system replication is a mandatory configuration in your production sites. The BACKINT interface is available with SAP HANA dynamic tiering. SAP HANA Security Techical whitepaper ( 03 / 2021), HANA XSA port specification via mtaext: SAP note 2389709 Specifying the port for SAP HANA Cockpit before installation, It is now possible to deactivate the SLD and using the LMDB as leading data collection system. For sure authorizations are also an important part but not in the context of this blog and far away from my expertise. Please provide your valuable feedback and please connect with me for any questions. Perform backup on primary. 4. Dynamic tiering enhances SAP HANA with large volume, warm data management capability. Internal communication is configured too openly least SAP HANA1.0 Revision 81 or higher. Recently we started receiving the alerts from our monitoring tool: There is already a blog about this configuration: https://blogs.sap.com/2014/01/17/configure-abap-to-hana-ssl-connection/ An overview over the processes itself can be achieved through this blog. Overview. Scale out of dynamic tiering is not available. Public communication channel configurations, 2. Extended tables behave like all other SAP HANA tables, but their data resides in the disk-based extended store. Global Network no internal interface found, listeninterface, .internal , KBA , HAN-DB , SAP HANA Database , Problem . a distributed system. SAP HANA dynamic tiering is a native big data solution for SAP HANA. Perform SAP HANA
Changes the replication mode of a secondary site. Once the above task is performed the services running on DT worker host will appear in Landscape tab in hana studio. For more information, see Standard Roles and Groups. The OS process for the dynamic tiering host is hdbesserver, and the service name is esserver. This
Trademark. Network Configuration for SAP HANA system replication Contact Us Contact us Contact us This site uses cookies and related technologies, as described in our privacy statement, for purposes that may include site operation, analytics, enhanced user experience, or advertising. installed. 2487731 HANA Basic How-To Series HANA and SSL CSR, SIGN, IMPLEMENT (pse container ) for ODBC/JDBC connections. configure security groups, see the AWS documentation. To pass the connection parameters to the DBSL, use the following profile parameter: dbs/hdb/connect_property = param1, param2, ., paramN, https://help.sap.com/viewer/b3ee5778bc2e4a089d3299b82ec762a7/2.0.04/en-US/0ae2b75266df44499d8fed8035e024ad.html. internal, and replication network interfaces. Wanting to use predictable network device names in a custom way is going, * Two character prefixes based on the type of interface: Unless you are using SAPGENPSE, do not password protect the keystore file that contains the servers private key. /hana/shared should be mounted on both the hosts namely HANA host and Dynamic Tiering host which will contain installation files of HANA and Dynamic Tiering service. both the SAP HANA databases on the primary and the secondary site share the same license key, identified by the System Identifier (SID) and an automatically generated hardware key. Find SAP product documentation, Learning Journeys, and more. For more information, see SAP HANA Database Backup and Recovery. We have a Production HANA landscape on HANA 1.0 SPS12 with a 4+0 Scaleout setup with HANA System replication to TIER2 in the same Primary Datacenter and TIER3 in the Secondary Datacenter To learn Chat Offline. The required ports must be available. A full sync was triggered to TIER2 and after the completion the TIER3 full sync was triggered global.ini -> [communication] -> listeninterface : .global or .internal SAP HANA Native Storage Extension ("NSE") is the recommended approach to implementing data tiering within an SAP HANA system. Usually system replication is used to support high availability and disaster recovery. I haven't seen it yet, but I will link it in this post.The hdbsql connect in this blog was just a side effect which I have tested due to script automatism when forcing ssl . systems, because this port range is used for system replication
if no mappings specified(Default), the default network route is used for system replication communication. The customizable_functionalities property is defined in the SYSTEMDB globlal.ini file at the system level. * In the first example, the [system_replication_communication]listeninterface parameter has been set to .global and the neighboring hosts are specified. System replication overview Replication modes Operation modes Replication Settings Activated log backup is a prerequisite to get a common sync point for log
to use SSL [part II], Configure HDB parameters for high security [part II], Configure XSA with TLS and cipher for high security [part II], Import certificate to host agent [part II], Pros and Cons certification collections [part II], Will show your certificate for your domain(s), Check the certificate: sapgenpse get_my_name -p cert.pse, Replace the sapsrv.pse, SAPSSLS.pse and SAPSSLC.pse with the created cert.pse, the application server connection via SQLDBC have to set up to be secure, HANA Cockpit connections have to set up to be secure, Local hdbsql connections have to be set up for encryption, sslValidateCertificate = false => will not validate the certificate, sslHostNameInCertificate =
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sap hana network settings for system replication communication listeninterface
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