sap hana network settings for system replication communication listeninterface

But still some more options e.g. subfolder. 2487731 HANA Basic How-To Series HANA and SSL CSR, SIGN, IMPLEMENT (pse container ) for ODBC/JDBC connections. Therfore you Linux' predictable network device names aka default network was "eth0" is now still predictably used as "enp1s0" with different rule set. So site1 & site3 won't meet except the case that I described. received on the loaded tables. 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! 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. 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. 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. The OS process for the dynamic tiering host is hdbesserver, and the service name is esserver. 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. On AS ABAP server this is controlled by is/local_addr parameter. Configure SAP HANA hostname resolution to let SAP HANA communicate over the a distributed system. You can configure additional network interfaces and security groups to further isolate If you have to install a new OS version you can setup your new environment and switch the application incl. network interface in the remainder of this guide), you can create Step 3. Stops checking the replication status share. inter-node communication as well as SAP HSR network traffic. Thank you Robert for sharing the current developments on "DT", Alerting is not available for unauthorized users, Right click and copy the link to share this comment. After some more checks we identified the listeninterface and internal_hostname_resolution parameters were not updated on TIER2 and TIER3 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. For this it may be wise to add an IP label, which means an own DNS record with name and IP, for each service. different logical networks by specifying multiple private IP addresses for your instances. ###########. Introduction. If you want to force all connection to use SSL/TLS you have to set the sslenforce parameter to true (global.ini). if no mappings specified(Default), the default network route is used for system replication communication. 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. You can also select directly the system view PSE_CERTIFICATES. For more information about how to create and SAP HANA system replication and the Internal Hostname resolution parameter: 0 0 3,388 BACKGROUND: 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 There are two scripts: HANA_Configuration_MiniChecks* and HANA_Security_Certificates*. * Dedicated network for system replication: 10.5.1. instance, see the AWS documentation. I hope this little summary is helping you to understand the relations and avoid some errors and long researches. resolution is working by creating entries in all applicable host files or in the Domain To learn more about this step, see Configuring Hostname Resolution for SAP HANA System Replication in the SAP More recently, we implemented a full-blown HANA in-memory platform . Failover nodes mount the storage as part of the failover process. # 2020/04/14 Insert of links / blogs as starting point, links for part II Thanks DongKyun for sharing this through this nice post. network. If set on Internal Network Configurations in System Replication : There are also configurations you can consider changing for system replications. With an elastic network interface (referred to as SAP HANA network niping communication connection refused host port IP address , KBA , master , slave , HAN-DB , SAP HANA Database , How To About this page This is a preview of a SAP Knowledge Base Article. Global Network Usually system replication is used to support high availability and disaster recovery. First time, I Know that the mapping of hostname to IP can be different on each host in system replication relationship. After a validation on the non prod systems the change was made on our Production landscape that is using the HANA System Replication (HSR) installed. the OS to properly recognize and name the Ethernet devices associated with the new To set it up is one task, to maintain and operate it another. For sure authorizations are also an important part but not in the context of this blog and far away from my expertise. * 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. You just have to set the dbs/hdb/connect_property parameter to the correct value: In some cases, you may receive an error if you force the use of TLS/SSL: You have to set some tricky parameter due to the default gateway of the Linux server. System replication between two systems on For more information, see: Only set this to true if you have configured all resources with SSL. 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. Find SAP product documentation, Learning Journeys, and more. # 2021/03/18 Inserted XSA high security Kudos out to Patrick Heynen 2478769 Obtaining certificates with subject Alternative Name (SAN) within STRUST It's free to sign up and bid on jobs. Pre-requisites. In the following example, ENI-1 of each instance shown is a member as in a separate communication channel for storage. You need a minimum SP level of 7.2 SP09 to use this feature. Now you have to go to the HANA Cockpit Manager to change the registered resource to use SSL. Prerequisites You comply all prerequisites for SAP HANA system replication. isolation. You can copy the certificate of the HANA database to the application server but you dont need to (HANA on one Server Tier 2). A service in this context means if you have multiple services like multiple tenants on one server running. SAP HANA Network Settings for System Replication 9. 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. exactly the type of article I was looking for. It SAP HANA attributes.ini daemon.ini dpserver.ini executor.ini global.ini indexserver.ini multidb.ini nameserver.ini statisticsserver.ini webdispatcher.ini xsengine.ini application_container auditing configuration authentication authorization backint backup businessdb cache calcengine cds . 2685661 - Licensing Required for HANA System Replication. we are planning to have separate dedicated network for multiple traffic e.g. When you launch an instance, you associate one or more security groups with the As you may read between the lines Im not a fan of authorization concepts. Be careful with setting these parameters! 1761693 Additional CONNECT options for SAP HANA instances. Using command line tool hdbnsutil: Primary : instance. RFC Module. You cant provision the same service to multiple tenants. To configure your logical network for SAP HANA, follow these steps: Create new security groups to allow for isolation of client, internal Unregisters a secondary tier from system replication. You use this service to create the extended store and extended tables. You have assigned the roles and groups required. For more information about network interfaces, see the AWS documentation. Check if your vendor supports SSL. need not be available on the secondary system. documentation. * 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/. Dynamic tiering enhances SAP HANA with large volume, warm data management capability. (more details in 8.). Storage snapshots cannot be prepared in SAP HANA systems in which dynamic tiering is enabled. You add rules to each security group that allow traffic to or from its associated SAP HANA SSFS Master Encryption Key The SSFS master encryption key must be changed in accordance with SAP Note 2183624. You have installed and configured two identical, independently-operational. Wonderful information in a couple of blogs!! Extended tables behave like all other SAP HANA tables, but their data resides in the disk-based extended store. The last step is the activation of the System Monitoring. 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 Separating network zones for SAP HANA is considered an AWS and SAP best practice. primary system: SAP Landscape Management 3.0, Enterprise Edition, What's New in 3.0 SP11 Enterprise Edition, What's New in 3.0 SP10 Enterprise Edition, Initial Setup Using the Configuration Wizard, Preparing SAP Application Instances on Windows, Installing SAP Application Instances with Virtual Host Names on Windows, Preparing Additional Hosts for Database Relocation, Preparing SAP Application Instances on UNIX, Installing SAP Application Instances with Virtual Host Names on UNIX, Configuring Individual User Interface Settings, Hiding Menu Items from the User Interface, Configuring Global User Interface Settings, Setting Up Validations for Landscape Entities, Integrating Partner Virtualization Technology, Obtaining Virtual Host Details from Virtual Host Provider, Creating Rolling Kernel Switch Repositories, Creating Rolling Kernel Switch Configurations, Configuring Diagnostics Agent Installations and Uninstallations, Configuring Application Server Installations and Uninstallations, Creating SAP Adaptive Extensions Repositories on UNIX, Configuring SAP Adaptive Extensions on UNIX, Creating SAP Adaptive Extensions Repositories on Windows, Configuring SAP Adaptive Extensions on Windows, Preparing Replication Status Repositories, Creating SAP HANA Replication Status Repositories, Configuring Custom Settings for System Provisioning, Configuring Additional Instance Information, Configuring Diagnostics Agent Connections, Configuring SystemDB Administrator Credentials, Configuring Database Administrator Credentials, Configuring Database Schema User Credentials, Specifying Configuration Directories of Database Instances, Specifying SQL Ports for Tenant Databases, Configuring Custom Properties for Instances, Assigning Custom Relations and Target Entities, Specifying Exclusively Consumed Resources, Extracting Mount Points from the File System, Enabling E-Mail Notifications for Activities, Enabling Custom Notifications for Activities, Configuring Managed Systems as SAP Solution Manager Systems, Assigning SAP Solution Manager Systems to Managed Systems, Configuring Managed Systems as Focused Run Systems, Assigning Focused Run Systems to Managed Systems, Configuring Custom Properties for Systems, Provisioning and Remote Function Call (RFC), Enabling Systems for Provisioning Operations, Configuring SAP Test Data Migration Server, Adding Mount Point Configurations on System Level, Configuring Remote Function Call Destinations, Configuring Outgoing Connections for System Isolation, Assigning Elements to Characteristic Values, Search Operators and Wildcards for Global Searches, Search Operators and Wildcards for Local Searches, Configuring the UI Refresh Interval per Screen, Operations for Adaptive Enabled Systems and Instances, Operations for Non-Adaptive Enabled Systems and Instances, Operations for SAP HANA Systems and Instances, Allowing One Instance to Run on One Host at a Time, Allowing Multiple Instances to Run on One Host at a Time, Managing SAP Adaptive Extensions Installations, General Prerequisites for Instance Operations, Starting Including Preparing Systems and Instances, Stopping and Unpreparing Systems and Instances, Relocating Not Running Systems and Instances, Restarting the AS Java Instance of an AS ABAP/Java System, Restarting and Reregistering an Instance Agent, Registering and Starting an Instance Agent, Executing Operations on Instances with an SAP Solution Manager System Assigned to Them, Executing Operations on Instances with a Focused Run System Assigned to Them, Description of the Rolling Kernel Switch Concept, Installing the License for ABAP Post-Copy Automation, Setting the Target Status for an Instance, Clearing the Target Status for an Instance, Getting A List of Users Who Are Logged On, Active/Active (Read Enabled) System Replication, Enabling or Disabling Full Sync Replication, Performing a Forced System Replication Takeover, Registering a Secondary Tier for System Replication, Starting Check of Replication Status Share, Stopping Check of Replication Status Share, Stopping Replicated Multi-Tier SAP HANA Systems, Unregistering Secondary Tier from System Replication, Unregistering System Replication Site on Primary, Assign Replication Status Repository Workflow, Moving a Tenant Database Near Zero Downtime, Near Zero Downtime Maintenance on Non-Primary Tier, Performing Near Zero Downtime Maintenance on Non-Primary Tier, Near Zero Downtime Maintenance on Non-Primary Tier Workflow, Near Zero Downtime Maintenance on Primary Tier, Performing Near Zero Downtime Maintenance on Primary Tier, Near Zero Downtime Maintenance on Primary Tier Workflow, Performing a Near Zero Downtime SAP HANA Update, Near Zero Downtime SAP HANA Update Workflow, Near Zero Downtime SAP HANA Update on Primary Tier, Performing a Near Zero Downtime SAP HANA Update on Primary Tier, Near Zero Downtime SAP HANA Update on Primary Tier Workflow, Register Primary Tier as new Secondary Tier, Registering a Primary Tier as new Secondary Tier, Register Primary Tier as new Secondary Tier Workflow, Removing Replication Status Configuration, Remove Replication Status Configuration Workflow, Updating Replication Status Configuration, Update Replication Status Configuration Workflow, Deactivating (OS Shutdown) Virtual Elements, Deactivating (Power Off) Virtual Elements, General Prerequisites for Provisioning Systems, Refreshing a Database Using a Database Backup, Executing Post-Copy Automation Standalone, Monitoring a System Clone, Copy, Refresh, or Rename, Installing Application Servers on an Existing System, Creating SAP HANA System Replication Tiers, Destroying SAP HANA System Replication Tiers, Configuring SAP Host Agent Registered Scripts, Creating Provider Script Registered with Host Agent, Parameters for Custom Operations and Custom Hooks, Creating Documentation for Custom Operations, Rearranging the Order of Custom Operations, Parameterizing Values for Provisioning Templates, Saving Activities as Provisioning Blueprints, Saving Provisioning Blueprints as Operation Template, Grouping Templates available in the Schedule, Filtering Templates available in the Schedule, Downloading Activities Support Information, General Security Aspects and Relevant Assets, Assets SAP Landscape Management Relies On, Setting Authorization Permissions for Operations and Content, Setting Authorization Permissions for Views, https://help.sap.com/viewer/p/SAP_ADAPTIVE_EXTENSIONS, Important Disclaimers and Legal Information, You have specified a database user either in the. 2211663 . Please note that SAP HANA Dynamic Tiering ("DT") is in maintenance only mode and is not recommended for new implementations. Dynamic tiering is targeted at SAP HANA database sizes of 512 GB and larger, where large data volumes begin to necessitate a data lifecycle management solution. Internal communication channel configurations(Scale-out & System Replication), Part2. all SAP HANA nodes and clients. We can install DLM using Hana lifecycle manager as described below: Click on to be configured. The new rules are 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. On every installation of an SAP application you have to take care of this names. In this example, the target SAP HANA cluster would be configured with additional network The host and port information are that of the SAP HANA dynamic tiering host. Above configurations are only required when you have internal networks. Certificate Management in SAP HANA Tertiary Tier in Multitier System Replication, Operations for SAP HANA Systems and Instances, Enable / Disable Fullsync System * The hostname in below refers to internal hostname in Part1. I just realized that the properties 'jdbc_ssl*' have been renamed to "hana_ssl" in XSA >=1.0.82. Because site1 and site2 usually resides in the same data center but site3 is located very far in another data center. See Ports and Connections in the SAP HANA documentation to learn about the list On HANA you can also configure each interface. Understood More Information when site2(secondary) is not working any longer. You need at As promised here is the second part (practical one) of the series about the secure network communication. Most will use it if no GUI is available (HANA studio / cockpit) or paired with hdbuserstore as script automatism (housekeeping). Here most of the documentation are missing details and are useless for complex environments and their high security standards with stateful connection firewalls. The certificate wont be validated which may violate your security rules. In the following example, two network interfaces are attached to each SAP HANA node as well United States. This is necessary to start creating log backups. SAP HANA communicate over the internal network. network interface, see the AWS 2086829 SAP HANA Dynamic Tiering Sizing Ratios, Dynamic Tiering Hardware and Software Requirements, SAP Note 2365623 SAP HANA Dynamic Tiering: Supported Operating Systems, 2555629 SAP HANA 2.0 Dynamic Tiering Hypervisor and Cloud Support. User Action: Investigate why connections are closed (for example, network problem) and resolve the issue. 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. One question though - May i know how are you Monitoring this SSL Certificates, which are applied on HANA DB ? Usually, tertiary site is located geographically far away from secondary site. We are not talking about self-signed certificates. Provisioning dynamic tiering service to a tenant database. global.ini -> [system_replication_hostname_resolution] : Recently we started receiving the alerts from our monitoring tool: 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. the same host is not supported. As mentioned earlier, having internal networks are essential in production system in order to get the expected response time and optimize the system performance. SAP HANA dynamic tiering adds the SAP HANA dynamic tiering service (esserver) to your SAP HANA system. A full sync was triggered to TIER2 and after the completion the TIER3 full sync was triggered System replication cannot be used in SAP HANA systems in which dynamic tiering is enabled. If you answer one of the questions negative you should wait for the second part of this series , ########### Only one dynamic tiering license is allowed per SAP HANA system. Each node has at least 2 physical IP addresses, one is for external network and another is for internal network where data/intermediate results for query processing/database operations can move around. We are talk about signed certificates from a trusted root-CA. You can also encrypt the communication for HSR (HANA System replication). 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. * You have installed internal networks in each nodes. If there are multiple dynamic tiering hosts available and you do not specify a host or port, the SAP HANA system randomly selects from the available hosts. Network for internal SAP HANA communication between hosts at each site: 192.168.1. HANA System Replication, SAP HANA System Replication * sl -- serial line IP (slip) instances. Public communication channel configurations, 2. SAP HANA dynamic tiering is a native big data solution for SAP HANA. Many newer Amazon EC2 instance types such as the X1 use an optimized configuration stack and 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 . Your application automatically determines which tier to save data to: the SAP HANA in-memory store (the hot store), or extended storage (the warm store). Log mode overwrite means log segments are freed by the With MDC (or like SAP says now container/tenants) you always have a systemDB and a tenant. This is the preferred method to secure the system as it's done automatically and the certificates are renewed when necessary. After TIER2 full sync completed, triggered the TIER3 full sync In Figure 10, ENI-2 is has its own security group (not shown) to secure client traffic from inter-node communication. 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. For more information, see SAP HANA Database Backup and Recovery. Applications, including utility programs, SAP applications, third-party applications and customized applications, must use an SAP HANA interface to access SAP HANA. Thanks for letting us know this page needs work. 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. (details see part I). Binds the processes to this address only and to all local host interfaces. Run hdblcm (with root) with the path of extracted software as parameter and install dynamic tiering component without addition of DT host. The XSA can be offline, but will be restarted (thanks for the hint Dennis). The primary replicates all relevant license information to the Share, Unregister Secondary Tier from System Replication, Unregister System Replication Site on For each server you can add an own IP label to be flexible. Stop secondary DB. The change data for the parameters ssfs_masterkey_changed and ssfs_masterkey_systempki_changed archived in the view SYS.M_HOST_INFORMATION is changed. You may choose to manage your own preferences. By default, this enables security and forces all resources to use ssl. SAP HANA system replication provides the possibility to copy and continuously synchronize a SAP HANA database to a secondary location in the same or another data center. SAP HANA 1.0, platform edition Keywords.
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