红帽全球峰会5.2. 由于节点崩溃而故障转移 ASCS
在崩溃前，ASCS 在 s4node1 上运行，而 ERS 在 s4node2 上运行。
[root@s4node1]# pcs status
...
Resource Group: s4h_ASCS20_group
s4h_fs_ascs20 (ocf::heartbeat:Filesystem): Started s4node1
s4h_vip_ascs20 (ocf::heartbeat:IPaddr2): Started s4node1
s4h_ascs20 (ocf::heartbeat:SAPInstance): Started s4node1
Resource Group: s4h_ERS29_group
s4h_fs_ers29 (ocf::heartbeat:Filesystem): Started s4node2
s4h_vip_ers29 (ocf::heartbeat:IPaddr2): Started s4node2
s4h_ers29 (ocf::heartbeat:SAPInstance): Started s4node2 ...在 s4node2 中，运行以下命令来监控集群中状态更改：
[root@s4node2 ~]# crm_mon -Arf
运行以下命令来崩溃 s4node1。请注意，命令后会丢失与 s4node1 的连接。
[root@s4node1 ~]# echo c > /proc/sysrq-trigger
在 s4node2 上，监控故障切换过程。故障转移后，集群应处于此类状态，在 s4node2 上具有 ASCS 和 ERS。
[root@s4node2 ~]# pcs status
...
Resource Group: s4h_ASCS20_group
s4h_fs_ascs20 (ocf::heartbeat:Filesystem): Started
s4node2 s4h_vip_ascs20 (ocf::heartbeat:IPaddr2): Started s4node2
s4h_ascs20 (ocf::heartbeat:SAPInstance): Started s4node2
Resource Group: s4h_ERS29_group
s4h_fs_ers29 (ocf::heartbeat:Filesystem): Started
s4node2 s4h_vip_ers29 (ocf::heartbeat:IPaddr2): Started s4node2
s4h_ers29 (ocf::heartbeat:SAPInstance): Started s4node2
...
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