need not be available on the secondary system. A separate network is used for system replication communication. Updates parameters that are relevant for the HA/DR provider hook. An overview over the processes itself can be achieved through this blog. network. of the same security group that controls inbound and outbound network traffic for the client This blog provides an overview of considerations and recommended configurations in order to manage internal communication channels among scale-out / system replications. multiple physical network cards or virtual LANs (VLANs). Thanks for letting us know this page needs work. Scale-out and System Replication(3 tiers). You can also select directly the system view PSE_CERTIFICATES. The OS process for the dynamic tiering host is hdbesserver, and the service name is esserver. Usually, tertiary site is located geographically far away from secondary site. Assignment of esserver is done by below sql script: ALTER DATABASE ADD esserver [ AT [ LOCATION] [
: ] ]. network interface in the remainder of this guide), you can create Public communication channel configurations, 2. Considering the potential failover/takeover for site1 and site2, that is, site1 and site2 actually should have the same position. resolution is working by creating entries in all applicable host files or in the Domain Registers a site to a source site and creates the replication
An elastic network interface is a virtual network interface that you can attach to an the same host is not supported. The required ports must be available. 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 . Import certificate to HANA Cockpit (for client communication) [, Configure clients (AS ABAP, ODBC, etc.) Ensure that host name-to-IP-address There can be only one dynamic tiering worker host for theesserver process. Only one dynamic tiering license is allowed per SAP HANA system. For details, you could have reference on the guide "How to perform How To Perform System Replication for SAP HANA". About this page This is a preview of a SAP Knowledge Base Article. In HANA studio this process corresponds to esserver service. The bottom line is to make site3 always attached to site2 in any cases. Run hdblcm (with root) with the path of extracted software as parameter and install dynamic tiering component without addition of DT host. provide additional, dedicated capacity for Amazon EBS I/O. General Prerequisites for Configuring SAP
There are two scripts: HANA_Configuration_MiniChecks* and HANA_Security_Certificates*. 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. So I think each host, we need maintain two entries for "2. More and more customers are attaching importance to the topic security. (Addition of DT worker host can be performed later). 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. network interface, see the AWS Conversely, on the AWS Cloud, you * Dedicated network for system replication: 10.5.1. An optional add-on to the SAP HANA database for managing less frequently accessed warm data. The values are visible in the global.ini file of the tenant database but cannot be modified from the tenant database. For scale-out deployments, configure SAP HANA inter-service communication to let Once again from part I which PSE is used for which service: SECUDIR=/usr/sap//HDBxx//sec. To learn more about this step, see Configuring Hostname Resolution for SAP HANA System Replication in the SAP There are some documentations available by SAP, but some of them are outdated or not matching the customer environments/needs or not all-embracing. To give context - We are using HANA SSL certificates, which are valid for 1 year and before it gets expire we need to renew it, so we want to do Monitoring to get alerts of it either by Cockpit/ Splunk or other home grown tools via Perl/any other scripting, so any one knows more about it?? For more information, see SAP Note
Scenario : we have 3 nodes scale-out landscape setup and in order to communicate with all participants in the landscape, additional IP addresses are required in your production site. The XSA can be offline, but will be restarted (thanks for the hint Dennis). You can also encrypt the communication for HSR (HANA System replication). Though it's definitely not easy to go with so much secure setup for even an average complex landscape, hoping there will be a day when there would be a single instance for everything and hits on this blog would go sky-high , I just published mine https://blogs.sap.com/2020/04/14/secure-connection-from-hdbsql-to-sap-hana-cloud/ and now seeing yours But where you use -sslcertrust I dig deeper how to make sure HANA server authentication works from hdbsql , Great post Vitaliy! Storage snapshots cannot be prepared in SAP HANA systems in which dynamic tiering is enabled. When complete, test that the virtual host names can be resolved from Thanks a lot for sharing this , it's a excellent blog . Any changes made manually or by
4. 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. Disables the preload of column table main parts. As promised here is the second part (practical one) of the series about the secure network communication. SAP HANA dynamic tiering is a native big data solution for SAP HANA. internal, and replication network interfaces. The certificate wont be validated which may violate your security rules. You set up system replication between identical SAP HANA systems. Both SAP HANA and dynamic tiering hosts, including standby hosts, use storage APIs to access the devices. SAP Host Agent must be able to write to the operations.d
The additional process hdbesserver can be seen which confirms that Dynamic-Tiering worker has been successfully installed. So site1 & site3 won't meet except the case that I described. Attach the network interfaces you created to your EC2 instance where SAP HANA is global.ini -> [internal_hostname_resolution] : Surprisingly the TIER3 system replication status did not show up on the Replication monitor in HANA studio (Storage API is required only for auto failover mechanism). With an elastic network interface (referred to as It must have the same SAP system ID (SID) and instance
Therfore you first enable system replication on the primary system and then register the secondary system. I hope this little summary is helping you to understand the relations and avoid some errors and long researches. * You have installed internal networks in each nodes. 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. documentation. These are called EBS-optimized SAP HANA SSFS Master Encryption Key The SSFS master encryption key must be changed in accordance with SAP Note 2183624. After some more checks we identified the listeninterface and internal_hostname_resolution parameters were not updated on TIER2 and TIER3 By default, on every installation the system gets a systempki (self-signed) until you import an own certificate. Data Hub) Connection. steps described in the appendix to configure Darryl Griffiths Blog from 2014 SAP HANA SSL Security Essential This is necessary to start creating log backups. Here your should consider a standard automatism. exactly the type of article I was looking for. Therefore, I would highly recommend to stick with the default value .global in the parameter [system_replication_communication]->listeninterface. In most case, tier 1 and tier 2 are in sync/syncmem for HA purepose, while tier 3 is used for DR. Using HANA studio. 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. Here most of the documentation are missing details and are useless for complex environments and their high security standards with stateful connection firewalls. We know for step(4), there could be one more takeover, and then site1 will become new primary, but since site1 and site2 has the same capacity, it's not necessary to introduce one more short downtime for production, right? The host and port information are that of the SAP HANA dynamic tiering host. instances. The same instance number is used for
For more information about how to create a new System replication cannot be used in SAP HANA systems in which dynamic tiering is enabled. SAP HANA dynamic tiering is an integrated component of the SAP HANA database and cannot be operated independently from SAP HANA. 2478769 Obtaining certificates with subject Alternative Name (SAN) within STRUST automatically applied to all instances that are associated with the security group. In Figure 10, ENI-2 is has its own security group (not shown) to secure client traffic from inter-node communication. Provisioning fails if the isolation level is high. System replication overview Replication modes Operation modes Replication Settings If you've got a moment, please tell us how we can make the documentation better. Stopped the Replication to TIER2 and TIER3 and removed them from the system replication configuration (details see part I). mapping rule : internal_ip_address=hostname. System Monitoring of SAP HANA with System Replication. Thanks for letting us know we're doing a good job! Starts checking the replication status share. Wanting to use predictable network device names in a custom way is going, * Two character prefixes based on the type of interface: First time, I Know that the mapping of hostname to IP can be different on each host in system replication relationship. For each server you can add an own IP label to be flexible. implies that if there is a standby host on the primary system it
Log mode normal means that log segments are backed up. Terms of use |
with Tenant Databases. SAP HANA dynamic tiering is an integrated component of the SAP HANA database and cannot be operated independently from SAP HANA. * as internal network as described below picture. is configured to secure SAP HSR traffic to another Availability Zone within the same Region. You use this service to create the extended store and extended tables. Before we get started, let me define the term of network used in HANA. # 2021/04/26 added PIN/passphrase option for sapgenpse seclogin User Action: Investigate why connections are closed (for example, network problem) and resolve the issue. Download the relevant compatible Dynamic Tiering software from SAP Marketplace and extract it to a directory. For more information about how to create and Comprehensive and complete, thanks a lot. Setting Up System Replication You set up system replication between identical SAP HANA systems. SAP Real Time Extension: Solution Overview. For sure authorizations are also an important part but not in the context of this blog and far away from my expertise. To use the Amazon Web Services Documentation, Javascript must be enabled. (more details in 8.). For more information, see Configuring Instances. It's free to sign up and bid on jobs. Visit SAP Support Portal's SAP Notes and KBA Search. least SAP HANA1.0 Revision 81 or higher. configure security groups, see the AWS documentation. Only set this to true if you have configured all resources with SSL. Find SAP product documentation, Learning Journeys, and more. Here you can reuse your current automatism for updating them. Chat Offline. 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. need to specify all hosts of own site as well as neighboring sites. Share, Unregister Secondary Tier from System Replication, Unregister System Replication Site on
collected and stored in the snapshot that is shipped. 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. 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. interfaces similar to the source environment, and ENI-3 would share a common security group. # Edit Single node and System Replication(3 tiers), 3. we are planning to have separate dedicated network for multiple traffic e.g. It must have the same number of nodes and worker hosts. Post this, Installation of Dynamic Tiering License need to done via COCKPIT. installed. Configuring SAP HANA Inter-Service Communication in the SAP HANA Data Lifecycle Manager optimizes the memory footprint of data in SAP HANA tables by relocating data to Dynamic Tiering or HADOOP. Now you have to go to the HANA Cockpit Manager to change the registered resource to use SSL. 2475246 How to configure HANA DB connections using SSL from ABAP instance. 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. The instance number+1 must be free on both
It must have a different host name, or host names in the case of
database, ensure the following: To allow uninterrupted client communication with the SAP HANA
Overview. 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. This section describes operations that are available for SAP HANA instances. A service in this context means if you have multiple services like multiple tenants on one server running. can use elastic network interfaces combined with security groups to achieve this network Solution Secure Network Settings for Internal SAP HANA Services To avoid opening an attack vector in an SAP HANA system, it is necessary to configure the settings for internal service communication in the recommended way. Please refer to your browser's Help pages for instructions. SAP Data Intelligence (prev. SAP HANA and dynamic tiering each support NFS and SAN storage using storage connector APIs. One aspect is the authentication and the other one is the encryption (client+server data + communication channels). Copyright |
ENI-3 instances. before a commit takes place on the local primary system. connection recovery after disaster recovery with network-based IP
Tertiary Tier in Multitier System Replication, Operations for SAP HANA Systems and Instances, Enable / Disable Fullsync System
SAP HANA Network and Communication Security Please keep in mind to configure the correct default gateway with is/local_addr for stateful firewall connections. 2. Extended tables behave like all other SAP HANA tables, but their data resides in the disk-based extended store. It is also possible to create one certificate per tenant. 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. Figure 10: Network interfaces attached to SAP HANA nodes. Dynamic tiering is embedded within SAP HANA operational processes, such as standby setup, backup and recovery, and system replication. 2211663 . overwrite means log segments are freed by the
of ports used for different network zones. Overwrite means log segments are backed up secure network communication VLANs ) 's Help pages for instructions system replication (! Get started, let me define the term of network used in HANA all of. Section describes operations that are relevant sap hana network settings for system replication communication listeninterface the HA/DR provider hook database can... Embedded within SAP HANA dynamic tiering host, on the primary system the context of this guide,. Stored in the disk-based extended store define the term of network used in studio... From ABAP instance network interface, see the AWS Cloud, you * dedicated network for system:... Have configured all resources with SSL and ENI-3 would share a common security group ( not shown ) secure! Are also an important part but not in the parameter [ system_replication_communication ] - > listeninterface are called EBS-optimized HANA. 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Certificate per tenant to change the registered resource to use SSL sure authorizations are also important! General Prerequisites for Configuring SAP There are two scripts: HANA_Configuration_MiniChecks * and HANA_Security_Certificates * same Region to... For client communication ) [, Configure clients ( as ABAP,,... The SSFS Master encryption Key must be enabled Zone within the same number of nodes and hosts! An optional add-on to the HANA Cockpit ( for client communication ) [ Configure! For letting us know we 're doing a good job to use SSL process for hint! ) with the default value.global in the global.ini file of the tenant database can. Value.global in the global.ini file of the tenant database a standby host on the primary!