停止辅助节点上的 SAP HANA 数据库 - 上的 SAP HANAAmazon
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停止辅助节点上的 SAP HANA 数据库

说明— 在正常群集运行期间停止主 SAP HANA 数据库（在节点 2 上）。

运行节点— 主 SAP HANA 数据库节点（在节点 2 上）

运行步骤：

  • 以下方式优雅地停止 SAP HANA 数据库<sid>adm在节点 2 上。

    sechana:~ # su - hdbadm
hdbadm@sechana:/usr/sap/HDB/HDB00> HDB stop
hdbdaemon will wait maximal 300 seconds for NewDB services finishing.
Stopping instance using: /usr/sap/HDB/SYS/exe/hdb/sapcontrol -prot NI_HTTP -nr 
00 -function Stop 400

12.11.2020 11:45:21
Stop
OK
Waiting for stopped instance using: /usr/sap/HDB/SYS/exe/hdb/sapcontrol 
-prot NI_HTTP -nr 00 -function WaitforStopped 600 2


12.11.2020 11:45:53
WaitforStopped
OK
hdbdaemon is stopped.

预期结果：

  • 群集检测已停止的主 SAP HANA 数据库（在节点 2 上），并提升辅助 SAP HANA 数据库（在节点 1 上）作为主数据库接管。

    [root@sechana ~]# pcs status
Cluster name: rhelhanaha
Stack: corosync
Current DC: sechana (version 1.1.19-8.el7_6.5-c3c624ea3d) - partition with quorum
Last updated: Tue Nov 10 18:04:01 2020
Last change: Tue Nov 10 18:04:00 2020 by root via crm_attribute on prihana

2 nodes configured
6 resources configured

Online: [ prihana sechana ]

Full list of resources:

 clusterfence   (stonith:fence_aws):    Started prihana
 Clone Set: SAPHanaTopology_HDB_00-clone [SAPHanaTopology_HDB_00]
     Started: [ prihana sechana ]
 Master/Slave Set: SAPHana_HDB_00-master [SAPHana_HDB_00]
     SAPHana_HDB_00     (ocf::heartbeat:SAPHana):       Promoting prihana
     Slaves: [ sechana ]
 hana-oip       (ocf::heartbeat:aws-vpc-move-ip):       Started prihana

Failed Actions:
* SAPHana_HDB_00_monitor_59000 on sechana 'master (failed)' (9): call=41, 
status=complete, exitreason='',
    last-rc-change='Tue Nov 10 18:03:49 2020', queued=0ms, exec=0ms


Daemon Status:
  corosync: active/enabled
  pacemaker: active/enabled
  pcsd: active/enabled
[root@sechana ~]#

  • 覆盖 IP 地址将迁移到新的主 IP 地址（在节点 1 上）。

    prihana:~ # ip addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc mq state UP group default qlen 1000
    link/ether 0a:38:1c:ce:b4:3d brd ff:ff:ff:ff:ff:ff
    inet xx.xx.xx.xx/24 brd 11.0.1.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet xx.xx.xx.xx/32 scope global eth0:1
       valid_lft forever preferred_lft forever
    inet 192.168.10.16/32 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::838:1cff:fece:b43d/64 scope link
       valid_lft forever preferred_lft forever

  • 与AUTOMATED_REGISTER将设置为true，群集将重新启动出现故障的 SAP HANA 数据库并将其注册到新的主数据库中。

    使用以下命令检查辅助设备的状态：

    sapcontrol –nr 00 –function GetProcessList
    hdbadm@sechana:/usr/sap/HDB/HDB00> sapcontrol -nr 00 -function GetProcessList

10.11.2020 18:08:47
GetProcessList
OK
name, description, dispstatus, textstatus, starttime, elapsedtime, pid
hdbdaemon, HDB Daemon, GREEN, Running, 2020 11 10 18:05:44, 0:03:03, 6601
hdbcompileserver, HDB Compileserver, GREEN, Running, 2020 11 10 18:05:48, 0:02:59, 6725
hdbindexserver, HDB Indexserver-HDB, GREEN, Running, 2020 11 10 18:05:49, 0:02:58, 6828
hdbnameserver, HDB Nameserver, GREEN, Running, 2020 11 10 18:05:44, 0:03:03, 6619
hdbpreprocessor, HDB Preprocessor, GREEN, Running, 2020 11 10 18:05:48, 0:02:59, 6730
hdbwebdispatcher, HDB Web Dispatcher, GREEN, Running, 2020 11 10 18:05:58, 0:02:49, 7797
hdbxsengine, HDB XSEngine-HDB, GREEN, Running, 2020 11 10 18:05:49, 0:02:58, 6831
hdbadm@sechana:/usr/sap/HDB/HDB00>

恢复程序：

  • 清理集群”failed actions” 在节点 2 作为 root 用户使用以下命令：

    pcs resource cleanup SAPHana_HDB_00 --node sechana
    [root@sechana ~]# pcs resource cleanup SAPHana_HDB_00 --node sechana
Cleaned up SAPHana_HDB_00:0 on sechana
Cleaned up SAPHana_HDB_00:1 on sechana
Waiting for 1 replies from the CRMd. OK

  • 资源清理后，请确保群集”failed actions” 已经清理好了。

    root@sechana ~]# pcs status
Cluster name: rhelhanaha
Stack: corosync
Current DC: sechana (version 1.1.19-8.el7_6.5-c3c624ea3d) - partition with quorum
Last updated: Tue Nov 10 18:13:35 2020
Last change: Tue Nov 10 18:12:51 2020 by hacluster via crmd on sechana

2 nodes configured
6 resources configured

Online: [ prihana sechana ]

Full list of resources:

 clusterfence   (stonith:fence_aws):    Started prihana
 Clone Set: SAPHanaTopology_HDB_00-clone [SAPHanaTopology_HDB_00]
     Started: [ prihana sechana ]
 Master/Slave Set: SAPHana_HDB_00-master [SAPHana_HDB_00]
     Masters: [ prihana ]
     Slaves: [ sechana ]
 hana-oip       (ocf::heartbeat:aws-vpc-move-ip):       Started prihana

Daemon Status:
  corosync: active/enabled
  pacemaker: active/enabled
  pcsd: active/enabled
[root@sechana ~]#