红帽全球峰会2.4. 配置 SAP HANA 二级复制实例
在使用与 SAP HANA 主实例相同的 SID 和实例号在其他 HA 集群节点上安装二级 SAP HANA 实例后，需要将其注册到已运行 SAP HANA 主实例中。
变为二级复制实例的 SAP HANA 实例需要首先停止，然后才能注册到主实例：
[rh1adm]$ HDB stop
当次要 SAP HANA 实例停止后，将 SAP HANA 系统 PKI SSFS_RH1.KEY 和 SSFS_RHDAT 文件从主 SAP HANA 实例复制到次要 SAP HANA 实例：
[rh1adm]$ scp root@node1:/usr/sap/RH1/SYS/global/security/rsecssfs/key/SSFS_RH1.KEY /usr/sap/RH1/SYS/global/security/rsecssfs/key/SSFS_RH1.KEY
...
[rh1adm]$ scp root@node1:/usr/sap/RH1/SYS/global/security/rsecssfs/data/SSFS_RH1.DAT /usr/sap/RH1/SYS/global/security/rsecssfs/data/SSFS_RH1.DAT
...如需更多信息，请参阅 SAP Note 2369981 - 使用 HANA System Replication 进行身份验证所需的配置步骤。
现在，SAP HANA 辅助复制实例可以使用以下命令注册到 SAP HANA 主复制实例：
[rh1adm]$ hdbnsutil -sr_register --remoteHost=node1 --remoteInstance=02 --replicationMode=syncmem --operationMode=logreplay --name=DC2
adding site ...
checking for inactive nameserver ...
nameserver node2:30201 not responding.
collecting information ...
updating local ini files ...
done.根据您的 HANA 系统复制的要求，请选择 replicationMode 和 operationMode 的值。如需更多信息，请参阅 SAP HANA 系统 复制和操作模式 的复制 模式。
注册成功后，可以再次启动 SAP HANA 辅助复制实例：
[rh1adm]$ HDB start
验证辅助节点是否正在运行，并且 'mode' 与用于 hdbnsutil -sr_register 命令中的 replicationMode 参数的值匹配。如果注册成功，SAP HANA 辅助复制实例上的 SAP HANA 系统复制状态应类似于如下：
[rh1adm]$ hdbnsutil -sr_state
checking for active or inactive nameserver ...
System Replication State
~~~~~~~~~~~~~~~~~~~~~~~~
mode: syncmem
site id: 2
site name: DC2
active primary site: 1
Host Mappings:
~~~~~~~~~~~~~~
node2 -> [DC1] node1
node2 -> [DC2] node2
'%20d='M201.5%20305.5c-13.8%200-24.9-11.1-24.9-24.6%200-13.8%2011.1-24.9%2024.9-24.9%2013.6%200%2024.6%2011.1%2024.6%2024.9%200%2013.6-11.1%2024.6-24.6%2024.6zM504%20256c0%20137-111%20248-248%20248S8%20393%208%20256%20119%208%20256%208s248%20111%20248%20248zm-132.3-41.2c-9.4%200-17.7%203.9-23.8%2010-22.4-15.5-52.6-25.5-86.1-26.6l17.4-78.3%2055.4%2012.5c0%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.3%2024.9-24.9s-11.1-24.9-24.9-24.9c-9.7%200-18%205.8-22.1%2013.8l-61.2-13.6c-3-.8-6.1%201.4-6.9%204.4l-19.1%2086.4c-33.2%201.4-63.1%2011.3-85.5%2026.8-6.1-6.4-14.7-10.2-24.1-10.2-34.9%200-46.3%2046.9-14.4%2062.8-1.1%205-1.7%2010.2-1.7%2015.5%200%2052.6%2059.2%2095.2%20132%2095.2%2073.1%200%20132.3-42.6%20132.3-95.2%200-5.3-.6-10.8-1.9-15.8%2031.3-16%2019.8-62.5-14.9-62.5zM302.8%20331c-18.2%2018.2-76.1%2017.9-93.6%200-2.2-2.2-6.1-2.2-8.3%200-2.5%202.5-2.5%206.4%200%208.6%2022.8%2022.8%2087.3%2022.8%20110.2%200%202.5-2.2%202.5-6.1%200-8.6-2.2-2.2-6.1-2.2-8.3%200zm7.7-75c-13.6%200-24.6%2011.1-24.6%2024.9%200%2013.6%2011.1%2024.6%2024.6%2024.6%2013.8%200%2024.9-11.1%2024.9-24.6%200-13.8-11-24.9-24.9-24.9z'/%3e%3c/svg%3e){kind=small}