Figure 11: Network interfaces and security groups. A full sync was triggered to TIER2 and after the completion the TIER3 full sync was triggered Following parameters is set after configuring internal network between hosts. Figure 12: Further isolation with additional ENIs and security Its purpose is to extend SAP HANA memory with a disk-centric columnar store (as opposed to the SAP HANA in-memory store). resolution is working by creating entries in all applicable host files or in the Domain Scale-out and System Replication(2 tiers), 4. Dynamic tiering adds smart, disk-based extended storage to your SAP HANA database. These steps helped resolve the issue and the System Replication monitor was now reflecting all 3 TIERS 4. So site1 & site3 won't meet except the case that I described. Trademark. Understood More Information the same host is not supported. You add rules to each security group that allow traffic to or from its associated as in a separate communication channel for storage. For more information, see SAP Note Disables the preload of column table main parts. In my opinion, the described configuration is only needed below situations. 1. Log mode normal means that log segments are backed up. I see more alerts in the trace files, don't know if they are related: [178728]{419183}[119/-1] 2015-08-18 20:56:11.225670 e cePlanExec cePlanExecutor.cpp(07183) : Error during Plan execution of model _SYS_STATISTICS:_SYS_SS_CE_1402084_140190768844608_4_INS (-1), reason: executor: plan operation failed;CalculationNode ($$_SYS_SS2_RESULT$$) -> operation (CustomLOp):Compilation failed; OpenChannelException at network layer: message: an error occured while opening the channel, [42096]{-1}[-1/-1] 2015-08-18 18:45:18.355758 e TrexNet EndPoint.cpp(00260) : ERROR: failed to open channel 127.0.0.1:30107! In multiple-container systems, the system database and all tenant databases SAP HANA dynamic tiering is an integrated component of the SAP HANA database and cannot be operated independently from SAP HANA. Stay healthy, redirection. Please use part one for the knowledge basics. By default, this enables security and forces all resources to use ssl. Setting up SAP data connection. mapping rule : internal_ip_address=hostname. Do you have similar detailed blog for for Scale up with Redhat cluster. Due the complexity of this topic the first part will once more the theoretical one and the second one will be more praxis oriented with the commands on the servers. global.ini -> [internal_hostname_resolution] : Application, Replication, host management , backup, Heartbeat. The bottom line is to make site3 always attached to site2 in any cases. In the following example, two network interfaces are attached to each SAP HANA node as well In the following example, ENI-1 of each instance shown is a member 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. shipping between the primary and secondary system. One question though - May i know how are you Monitoring this SSL Certificates, which are applied on HANA DB ? From HANA system replication documentation(SAP HANA Administration Guide -> [Availability and Scalability] -> [High Availability for SAP HANA] -> [Configuring SAP HANA System Replication] -> [Setting Up SAP HANA System Replication] -> [Host Name Resolution for System Replication]), as similar as internal network configurations in scale-out system, there are 2 configurable parameters. It must have the same software version or higher. Visit SAP Support Portal's SAP Notes and KBA Search. well as for SAP HSR, Storage zone to persist SAP HANA data in the storage infrastructure for Internal communication channel configurations(Scale-out & System Replication), Part2. Understood More Information +1-800-872-1727. It's free to sign up and bid on jobs. ###########. # Edit communication, and, if applicable, SAP HSR network traffic. Changes the replication mode of a secondary site. When set, a diamond appears in the database column. Step 1 . Here most of the documentation are missing details and are useless for complex environments and their high security standards with stateful connection firewalls. Create new network interfaces from the AWS Management Console or through the AWS CLI. SAP HANA Network Settings for System Replication 9. HANA System Replication, SAP HANA System Replication if mappings are specified as either neighboring sites(minimum) or all hosts of own site as well as neighboring sites, an internal(separate) network is used for system replication communication. 1. System replication cannot be used in SAP HANA systems in which dynamic tiering is enabled. savepoint (therefore only useful for test installations without backup and The host and port information are that of the SAP HANA dynamic tiering host. SAP HANA communicate over the internal network. In the step 5, it is possible to avoid exporting and converting the keys. Extracting the table STXL. Since NSE is a capability of the core HANA server, using NSE eliminates the limitations of DT that you highlighted above. 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. 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. If you've got a moment, please tell us how we can make the documentation better. communications. Internal communication channel configurations(Scale-out & System Replication). 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). no internal interface found, listeninterface, .internal , KBA , HAN-DB , SAP HANA Database , Problem . Check all connecting interfaces for it. number. For more information, see https://help.sap.com/viewer/p/SAP_ADAPTIVE_EXTENSIONS. For sure authorizations are also an important part but not in the context of this blog and far away from my expertise. Unregisters a system replication site on a primary system. Dynamic tiering is also supported by the Data Lifecycle Manager (DLM), an SAP HANA XS-based tool to relocate data from SAP HANA memory to alternate storage locations such as the dynamic tiering extended store, SAP HANA extension nodes, or Hadoop/Vora. When you use SAP HANA to place hot data in SAP HANA in-memory tables, and warm data in extended tables, highest value data remains in memory, and cooler less-valuable data is saved to the extended store. How to Configure SSL in SAP HANA 2.0 implies that if there is a standby host on the primary system it global.ini: Set inside the section [communication] ssl from off to systempki. Introduction. Pre-requisites. Here it is pretty simple one option is to define manually some command line options: cp /usr/sap/SID/HDB00/hostname/sec/sapsrv.pse /usr/sap/SID/HDB00/hostname/sec/sapcli.pse. must be backed up. 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 Activated log backup is a prerequisite to get a common sync point for log You cant provision the same service to multiple tenants. 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. Surprisingly the TIER3 system replication status did not show up on the Replication monitor in HANA studio subfolder. You have installed SAP Adaptive Extensions. Would be good to have any feedback from any customers that have come across this and it will be useful for any customers that are planning to make this change in their landscape, Alerting is not available for unauthorized users. 2478769 Obtaining certificates with subject Alternative Name (SAN) within STRUST User Action: Investigate why connections are closed (for example, network problem) and resolve the issue. I hope this little summary is helping you to understand the relations and avoid some errors and long researches. The latest release version of DT is SAP HANA 2.0 SP05. So for s1host1,10.5.2.1=s2host110.4.3.1=s3host1, For s2host110.5.1.1=s1host110.4.3.1=s3host1, For s3host110.4.1.1=s1host110.4.2.1=s2host1. We can install DLM using Hana lifecycle manager as described below: Click on to be configured. provide additional, dedicated capacity for Amazon EBS I/O. The parameter listeninterface=.global in the section [system_replication_communication] is used for system replication. 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. For instance, third party tools like the backup tool via backint are affected. If you change the HANA hostname resolution, you will map the physical hostname which represents your default gateway to the original installed vhostname. Network and Communication Security. 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. interfaces similar to the source environment, and ENI-3 would share a common security group. For more information about network interfaces, see the AWS documentation. # 2020/4/15 Inserted Vitaliys blog link + XSA diagnose details In particolare, la configurazione usa la replica di sistema HANA (HSR) e Pacemaker in macchine virtuali Linux (VM) di Azure Red Hat Enterprise. Binds the processes to this address only and to all local host interfaces. different logical networks by specifying multiple private IP addresses for your instances. Network for internal SAP HANA communication: 192.168.1. Enables a site to serve as a system replication source site. An overview over the processes itself can be achieved through this blog. You modify properties in the global.ini file to prepare resources on each tenant database to support SAP HANA dynamic tiering. A service in this context means if you have multiple services like multiple tenants on one server running. Not sure up to which revision the "legacy" properties will work. To change the TLS version and the ciphers for the XSA you have to edit the xscontroller.ini. Using command line tool hdbnsutil: Primary : But the, SAP app server on same machine, tries to connect to mapped external hostname and if tails of course. Please refer to your browser's Help pages for instructions. Only set this to true if you have configured all resources with SSL. Therefore, I would highly recommend to stick with the default value .global in the parameter [system_replication_communication]->listeninterface. synchronous replication from memory of the primary system to memory of the secondary system, because it is the only method which allows the pacemaker cluster to make decisions based on the implemented algorithms. But keep in mind that jdbc_ssl parameter has no effect for Node.js applications! Pipeline End-to-End Overview. There are two possibilities to store the certificates: Due to the flexiblity there are some advantages (copy move of databases) in the newer solution (certificate collection), but if you have to update 100 HANA instances with new certificate every 2 years it can be easier to use the file based solution. It is also important to configure the appropriate network communication routing, because per default every traffic on a Linux server goes per default over the default gateway which is by default the first interface eth0 (we will need this know how later for the certificates). Therfore you first enable system replication on the primary system and then register the secondary system. * ww -- wwan, Ethernet cards will always start withen, but they might be followed by a, its key to remember the hex conversion of network cards, https://major.io/2015/08/21/understanding-systemds-predictable-network-device-names/. The values are visible in the global.ini file of the tenant database but cannot be modified from the tenant database. Pages for instructions HANA dynamic tiering is enabled relations and avoid some errors and long researches or. Sap HANA systems in which dynamic tiering is enabled # # # # # # # # # #.! 'Ve got a moment, please tell us how we can make the documentation are details! 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