oracle节点1关闭节点2的集群,[Oracle] Oracle两个节点分裂，识别不到对方节点的状态...

Oracle RAC19C，两个节点安装成功，重启后发现两个节点的集群互相识别不到对方的集群状态，都认为自己才是仅有的活跃节点，节点1和节点2的crs先后重启成功，但是两个VIP和SCAN IP只会集中在先启动的那个节点上，而且不能正确识别到对方节点的VIP、SCAN IP状态，实例状态也识别异常。

就是分裂的感觉，分别处于不同的集群中。

环境：vmware搭建的虚拟环境，rhel7.5 + ORACL19.3

请问：

1、引起这个问题的原因怎么排查？

2、oracle rac是通过什么来判断N个节点是处于同一个集群中的？

PRVG-10466 : Failed to determine cluster node roles. Verification will proceed considering nodes “rhel75h2” as hub nodes.

PRCI-1108 : Failed to check CRS running state for CRS home /oracle/app/19.3.0/grid/product/db_1 on node rhel75h2

CRS-4535: Cannot communicate with Cluster Ready Services

CRS-4529: Cluster Synchronization Services is online

CRS-4533: Event Manager is online

2021-03-13 23:36:47.026 [CVUD(51770)]CRS-10051: CVU found following errors with Clusterware setup : PRVG-10466 : Failed to determine cluster node roles. Verification will proceed considering nodes “rhel75h2” as hub nodes.

PRCI-1108 : Failed to check CRS running state for CRS home /oracle/app/19.3.0/grid/product/db_1 on node rhel75h2

CRS-4535: Cannot communicate with Cluster Ready Services

CRS-4529: Cluster Synchronization Services is online

CRS-4533: Event Manager is online

总结

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