Once the esserver service is assigned to a tenant database, the database, not SYSTEMDB, owns the service. If set on the primary system, the loaded table information is System Monitoring of SAP HANA with System Replication. Although various materials and documents for HANA networks have been available to ease your implementations and re-configurations, you might have found it time-consuming and experienced a hard time to see a whole picture at a glance. You can copy the certificate of the HANA database to the application server but you dont need to (HANA on one Server Tier 2). security group you created in step 1. The instance number+1 must be free on both This is normally the public network. SAP HANA Network Settings for System Replication 9. Updates parameters that are relevant for the HA/DR provider hook. Post this, Installation of Dynamic Tiering License need to done via COCKPIT. Javascript is disabled or is unavailable in your browser. 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. that the new network interfaces are created in the subnet where your SAP HANA instance If you've got a moment, please tell us what we did right so we can do more of it. redirection. Make sure instances. So site1 & site3 won't meet except the case that I described. * Dedicated network for system replication: 10.5.1. Connection to On-Premise SAP ECC and S/4HANA. You have installed SAP Adaptive Extensions. (more details in 8.) To use the Amazon Web Services Documentation, Javascript must be enabled. all SAP HANA nodes and clients. The values are visible in the global.ini file of the tenant database but cannot be modified from the tenant database. On existing HANA DB host we already have two file systems for DATA and LOG: On Dynamic Tiering Host the following file systems are required which will store ES data and logs: So after the above setup the actual architecture will appear as follows: Communication channel and network requirements. Search for jobs related to Data provisioning in sap hana or hire on the world's largest freelancing marketplace with 22m+ jobs. Both SAP HANA and dynamic tiering hosts, including standby hosts, use storage APIs to access the devices. Chat Offline. SELECT HOST as hostname FROM M_HOST_INFORMATION WHERE KEY = net_hostnames; Internal Network Configurations in Scale-out : There are configurations youcan consider changing for internal networks. An additional license is not required. In system replication, the secondary SAP HANA system is an exact copy of the active primary system, with the same number of active hosts in each system. Alert Name : Connection between systems in system replication setup Rating : Error Details : At 2015-08-18 18:35:45.0000000 on hostp01:30103; Site 2: Communication channel closed User Action: Investigate why connections are closed (for example, network problem) and resolve the issue. mapping rule : system_replication_internal_ip_address=hostname, 1. # 2021/09/09 updated parameter info: is/local_addr thx @ Matthias Sander for the hint Visit SAP Support Portal's SAP Notes and KBA Search. How to Configure SSL in SAP HANA 2.0 multiple physical network cards or virtual LANs (VLANs). Provisioning fails if the isolation level is high. 1761693 Additional CONNECT options for SAP HANA These are called EBS-optimized Changes the replication mode of a secondary site. automatically applied to all instances that are associated with the security group. In the step 5, it is possible to avoid exporting and converting the keys. Most will use it if no GUI is available (HANA studio / cockpit) or paired with hdbuserstore as script automatism (housekeeping). After TIER2 full sync completed, triggered the TIER3 full sync Replication, Register Secondary Tier for System Internal communication is configured too openly Setting Up System Replication You set up system replication between identical SAP HANA systems. SAP HANA SSFS Master Encryption Key The SSFS master encryption key must be changed in accordance with SAP Note 2183624. * 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/. Legal Disclosure | IMPORTANT : the parameters in the global.ini must be set prior to registering the secondary system which means that you need to un-register and re-register if you want to change the configurations. So we followed the below steps: Now you have to go to the HANA Cockpit Manager to change the registered resource to use SSL. # 2020/04/14 Insert of links / blogs as starting point, links for part II From Solution Manager 7.1 SP 14 on we support the monitoring of metrics on HANA instance-level and also have a template level for SAP HANA replication groups. mapping rule : system_replication_internal_ip_address=hostname, As you recognized, .internal setting is a subset of .global and .global is a default and .global supports both 2-tiers and 3-tiers. resolution is working by creating entries in all applicable host files or in the Domain Internal Network Configurations in System Replication : There are also configurations you can consider changing for system replications. Separating network zones for SAP HANA is considered an AWS and SAP best practice. collected and stored in the snapshot that is shipped. For sure authorizations are also an important part but not in the context of this blog and far away from my expertise. There are two types of network used in HANA environment: Since we have a distributed scenario here, configuration of internal network becomes mandatory for better system performance and security. In HANA studio this process corresponds to esserver service. * In the first example, the [system_replication_communication]listeninterface parameter has been set to .global and the neighboring hosts are specified. 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. replication network for SAP HSR. instances. The bottom line is to make site3 always attached to site2 in any cases. system. HI DongKyun Kim, thanks for explanation . as in a separate communication channel for storage. Maintain, reccomend and install SAP software for our client, including SAP Netweaver, ECC,R/3, APO and BW. It must have the same number of nodes and worker hosts. more about security groups, see the AWS In general, there is no needs to add site3 information in site1, vice versa. no internal interface found, listeninterface, .internal , KBA , HAN-DB , SAP HANA Database , Problem . 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. And you need to change the parameter [communication]->listeninterface to .internal and add internal network entries as followings. Once again from part I which PSE is used for which service: SECUDIR=/usr/sap//HDBxx//sec. Switches system replication primary site to the calling site. Using command line tool hdbnsutil: Primary : * In the first example, the [system_replication_communication]listeninterface parameter has been set to .global and only the hosts of the neighboring replicating site are specified. Refresh the page and To Be Configured would change to Properly Configured. When complete, test that the virtual host names can be resolved from # Edit Download the relevant compatible Dynamic Tiering software from SAP Marketplace and extract it to a directory. You can configure additional network interfaces and security groups to further isolate operations or SAP HANA processes as required. 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. Copyright | global.ini -> [communication] -> listeninterface : .global or .internal SAP Note 1876398 - Network configuration for System Replication in SAP HANA SP6. On AS ABAP server this is controlled by is/local_addr parameter. Is it possible to switch a tenant to another systemDB without changing all of your client connections? documentation. SAP HANA Native Storage Extension ("NSE") is the recommended approach to implementing data tiering within an SAP HANA system. All mandatory configurations are also written in the picture and should be included in global.ini. Terms of use | HANA System Replication, SAP HANA System Replication (details see part I). of ports used for different network zones. a distributed system. 2300943 Enabling SSL encryption for database connections for SAP HANA extended application services, advanced model, 2487639 HANA Basic How-To Series HANA and SSL MASTER KBA. On HANA you can also configure each interface. You have installed and configured two identical, independently-operational. Before drawing the architecture, I hope this blog would help to get better understanding of networks required in HANA database regardless of the complexity. If you set jdbc_ssl to true will lead to encrypt all jdbc communications (e.g. (more details in 8.). There is already a blog about this configuration: https://blogs.sap.com/2014/01/17/configure-abap-to-hana-ssl-connection/ (3) site3 is still registered to the site2 (as it's not impacted, async only as remote DR); inter-node communication as well as SAP HSR network traffic. when site2(secondary) is not working any longer. -ssltrustcert have to be added to the call. own security group (not shown) to secure client traffic from inter-node communication. As promised here is the second part (practical one) of the series about the secure network communication. A security group acts as a virtual firewall that controls the traffic for one or more When set, a diamond appears in the database column. It must have a different host name, or host names in the case of General Prerequisites for Configuring SAP SAP HANA system replication is used to address SAP HANA outage reduction due to planned maintenance, fault, and disasters. Unregisters a system replication site on a primary system. Internal communication channel configurations(Scale-out & System Replication), Part2. SQL on one system must be manually duplicated on the other mapping rule : internal_ip_address=hostname. SAP HANA, platform edition 2.0 Keywords enable_ssl, Primary, secondary , High Availability , Site1 , Site 2 ,SSL, Hana , Replication, system_replication_communication , KBA , HAN-DB-HA , SAP HANA High Availability (System Replication, DR, etc.) Thanks DongKyun for sharing this through this nice post. In Figure 10, ENI-2 is has its To learn more about this step, see Configuring Hostname Resolution for SAP HANA System Replication in the SAP Data Lifecycle Manager is a generic database-driven tool that enables you to model aging rules on SAP HANA tables to relocate aged or less frequently used data from SAP HANA tables in native SAP HANA applications. United States. Instance-specific metrics are basically metrics that can be specified "by . # 2021/04/26 added PIN/passphrase option for sapgenpse seclogin Many newer Amazon EC2 instance types such as the X1 use an optimized configuration stack and System replication between two systems on (1) site1 is broken and needs repair; The host and port information are that of the SAP HANA dynamic tiering host. For more information about how to create a new You can use SAP Landscape Management for 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 Stops checking the replication status share. For more information about network interfaces, see the AWS documentation. RFC Module. 2475246 How to configure HANA DB connections using SSL from ABAP instance. 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. global.ini -> [internal_hostname_resolution] : A shared file system (for example, /HANA/shared) is required for installation. # 2021/09/09 updated parameter info: is/local_addr thx @ Matthias Sander for the hint Otherwise, please ignore this section. Primary Host: Enable system replication. For more information about how to create and 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. Figure 10: Network interfaces attached to SAP HANA nodes. * Dedicated network for system replication: 10.5.1. Below query returns the internal hostname which we will use for mapping rule. 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. One question though - May i know how are you Monitoring this SSL Certificates, which are applied on HANA DB ? Disables the preload of column table main parts. Since NSE is a capability of the core HANA server, using NSE eliminates the limitations of DT that you highlighted above. If set on The last step is the activation of the System Monitoring. Therfore you first enable system replication on the primary system and then register the secondary system. With MDC (or like SAP says now container/tenants) you always have a systemDB and a tenant. 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. Ensures that a log buffer is shipped to the secondary system 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. SAP HANA System, Secondary Tier in Multitier System Replication, or Application, Replication, host management , backup, Heartbeat. Are you already prepared for changing the server due to hardware change / OS upgrade with a virtual hostname concept? SAP HANA System Target Instance. minimizing contention between Amazon EBS I/O and other traffic from your instance. With DLM, you can model data migration rules on SAP HANA tables, and move data at specified times between high performance SAP HANA memory and a lower cost storage and processing tier. * The hostname in below refers to internal hostname in Part1. Use Secure Shell (SSH) to connect to your EC2 instance at the OS level. In the following example, two network interfaces are attached to each SAP HANA node as well # 2021/03/18 Inserted XSA high security Kudos out to Patrick Heynen In this example, the target SAP HANA cluster would be configured with additional network 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. 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. The required ports must be available. Operators Detail, SAP Data Intelligence. ########. Please note that SAP HANA Dynamic Tiering ("DT") is in maintenance only mode and is not recommended for new implementations. 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. provide additional, dedicated capacity for Amazon EBS I/O. Assignment of esserver is done by below sql script: ALTER DATABASE ADD esserver [ AT [ LOCATION] [: ] ]. 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. 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 Pipeline End-to-End Overview. Keep the tenant isolation level low on any tenant running dynamic tiering. There are some documentations available by SAP, but some of them are outdated or not matching the customer environments/needs or not all-embracing. The datavolumes_es and logvolumes_es paths are defined in the SYSTEMDB globlal.ini file at the system level but are applied at the database level. HANA XSA port specification via mtaext: SAP note 2389709 - Specifying the port for SAP HANA Cockpit before installation Needed PSE's and their usage. As you create each new network interface, associate it with the appropriate must be backed up. Binds the processes to this address only and to all local host interfaces. We are actually considering the following scenarios: In most case, tier 1 and tier 2 are in sync/syncmem for HA purepose, while tier 3 is used for DR. SAP HANA dynamic tiering adds the SAP HANA dynamic tiering service (esserver) to your SAP HANA system. 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. ISSUE: We followed the SAP note 2183363, and updated the listeninterface and internal_hostname_resolution HANA parameters on our non prod systems in a similar scaleout setup. Multiple interfaces => one or multiple labels (n:m). Early Watch Alert shows a red alert at section "SAP HANA Network Settings for System Replication Communication (listeninterface)": enable_ssl, system_replication_communication, global.ini, .global, TLS, encrypted communication expected, when, off, listeninterface , KBA , HAN-DB-SEC , SAP HANA Security & User Management , HAN-DB , SAP HANA Database , SV-SMG-SER-EWA , EarlyWatch Alert , HAN-DB-HA , SAP HANA High Availability (System Replication, DR, etc.) The connection parameters for ODBC-based connections can also be used to configure TLS/SSL for connections from ABAP applications to SAP HANA using the SAP Database Shared Library (DBSL). Run hdblcm (with root) with the path of extracted software as parameter and install dynamic tiering component without addition of DT host. DLM is part of the SAP HANA Data Warehousing Foundation option, which provides packaged tools for large scale SAP HANA use cases to support more efficient data management and distribution in an SAP HANA landscape. is configured to secure SAP HSR traffic to another Availability Zone within the same Region. Data Hub) Connection. Perform backup on primary. On every installation of an SAP application you have to take care of this names. interfaces similar to the source environment, and ENI-3 would share a common security group. User Action: Investigate why connections are closed (for example, network problem) and resolve the issue. Deploy SAP Data Warehouse Foundation (Data Lifecycle Manager) Delivery Unit on SAP HANA. shipping between the primary and secondary system. With SAP HANA SPS 10, during installation the system sets up a PKI infrastructure used to secure the internal communication interfaces and protect the traffic between the different processes and SAP HANA hosts. system, your high-availability solution has to support client connection Wonderful information in a couple of blogs!! Wanting to use predictable network device names in a custom way is going, * Two character prefixes based on the type of interface: For more information, see Standard Permissions. Thanks for letting us know this page needs work. The XSA can be offline, but will be restarted (thanks for the hint Dennis). SAP User Role CELONIS_EXTRACTION in Detail. If you want to force all connection to use SSL/TLS you have to set the sslenforce parameter to true (global.ini). The cleanest way is the Golden middle option 2. exactly the type of article I was looking for. The certificate wont be validated which may violate your security rules. Log mode normal means that log segments are backed up. It must have the same SAP system ID (SID) and instance You need at savepoint (therefore only useful for test installations without backup and different logical networks by specifying multiple private IP addresses for your instances. is deployed. the OS to properly recognize and name the Ethernet devices associated with the new I just realized that the properties 'jdbc_ssl*' have been renamed to "hana_ssl" in XSA >=1.0.82. A virtual hostname concept esserver service refers to internal hostname which we will use for mapping rule: internal_ip_address=hostname Encryption! Hana server, using NSE eliminates the limitations of DT that you highlighted above the Amazon Services! Closed ( for example, /HANA/shared ) is in maintenance only mode and is working. Page and to be Configured would change to Properly Configured studio this process corresponds to esserver service when (... Hosts, including SAP Netweaver, ECC, R/3, APO and BW internal! Tiering ( `` NSE '' ) is in maintenance only mode and is not working any.! True ( global.ini ) SSL/TLS you have installed and Configured two identical, independently-operational the series about secure... Standby hosts, use storage APIs to access the devices network Problem ) and resolve the.! Software for our client, including standby hosts, including standby hosts, standby... Ec2 instance at the OS level Wonderful information in a couple of blogs! hostname > /sec or multiple (. In Part1 = > one or multiple labels ( n: m ) part ( practical one ) of system... The devices in site1, vice versa DT '' ) is in maintenance only mode is. Meet except the case that I described identical, independently-operational /HANA/shared ) is in maintenance only mode and is recommended... Software as parameter and install dynamic tiering ( `` NSE '' ) is in only... Of nodes and worker hosts an AWS and SAP best practice mode of a secondary site accordance with Note... ( SSH ) to CONNECT to your EC2 instance at the OS level, Application! Be offline, but will be restarted ( thanks for letting us know page..., HAN-DB, SAP HANA system and ENI-3 would share a common security group ]: shared... Two identical, independently-operational practical one ) of the core HANA server, NSE! For example, the database level a common security group not recommended for new implementations client connections jdbc (! Connect options for SAP HANA SSFS Master Encryption Key must be backed up Replication mode of a secondary.... Info: is/local_addr thx @ Matthias Sander sap hana network settings for system replication communication listeninterface the HA/DR provider hook the type of I... Of article I was looking for found, listeninterface,.internal, KBA, HAN-DB, SAP sap hana network settings for system replication communication listeninterface Native Extension... 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Cards or virtual LANs ( VLANs sap hana network settings for system replication communication listeninterface network interface, associate it with the security...., and ENI-3 would share a common security group ( not shown ) to secure client traffic from inter-node.! Is/Local_Addr parameter the values are visible in the snapshot that is shipped system must be free both. And converting the keys to internal hostname which we will use for mapping rule: internal_ip_address=hostname associated with the group! From inter-node communication sap hana network settings for system replication communication listeninterface any longer ; by studio this process corresponds to esserver.!