Preparing to launch Oracle Universal Installer from /tmp/OraInstall2021-04-22_11-44-09PM. 
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[FATAL] [INS-35354] The system on which you are attempting to install Oracle RAC is not part of a valid cluster.
   CAUSE: Before you can install Oracle RAC, you must install Oracle Grid Infrastructure on all servers (Oracle Clusterware and Oracle ASM) to create a cluster.
   ACTION: Oracle Grid Infrastructure is not installed. Install it either from the separate installation media included in your media pack, or install it by downloading it from Electronic Product Delivery (EPD) or the Oracle Technology Network (OTN). Oracle Grid Infrastructure normally is installed by a different operating system user than the one used for Oracle Database. It may need to be installed by your system administrator. See the installation guide for more details.

原因：

由于在静默安装grid软件时，没有执行最后一步的脚本：

Execute Root Scripts successful.
As install user, execute the following script to complete the configuration.
	1. /u01/app/11.2.0/grid/cfgtoollogs/configToolAllCommands RESPONSE_FILE=<response_file>

[root@lucifer01 ContentsXML]# cat inventory.xml 
<?xml version="1.0" standalone="yes" ?>
<!-- Copyright (c) 1999, 2013, Oracle and/or its affiliates.
All rights reserved. -->
<!-- Do not modify the contents of this file by hand. -->
<INVENTORY>
<VERSION_INFO>
   <SAVED_WITH>11.2.0.4.0</SAVED_WITH>
   <MINIMUM_VER>2.1.0.6.0</MINIMUM_VER>
</VERSION_INFO>
<HOME_LIST>
<HOME NAME="Ora11g_gridinfrahome1" LOC="/u01/app/11.2.0/grid" TYPE="O" IDX="1">
   <NODE_LIST>
      <NODE NAME="lucifer01"/>
      <NODE NAME="lucifer02"/>
   </NODE_LIST>
</HOME>
</HOME_LIST>
<COMPOSITEHOME_LIST>
</COMPOSITEHOME_LIST>
</INVENTORY>

cat <<EOF >>/home/grid/cfgrsp.propertiesc
oracle.assistants.asm|S_ASMPASSWORD=oracle
oracle.assistants.asm|S_ASMMONITORPASSWORD=oracle
EOF

su - grid -c "$ENV_GRID_HOME/cfgtoollogs/configToolAllCommands RESPONSE_FILE=/home/grid/cfgrsp.properties"

[root@lucifer01 ContentsXML]# cat inventory.xml 
<?xml version="1.0" standalone="yes" ?>
<!-- Copyright (c) 1999, 2013, Oracle and/or its affiliates.
All rights reserved. -->
<!-- Do not modify the contents of this file by hand. -->
<INVENTORY>
<VERSION_INFO>
   <SAVED_WITH>11.2.0.4.0</SAVED_WITH>
   <MINIMUM_VER>2.1.0.6.0</MINIMUM_VER>
</VERSION_INFO>
<HOME_LIST>
<HOME NAME="Ora11g_gridinfrahome1" LOC="/u01/app/11.2.0/grid" TYPE="O" IDX="1" CRS="true">
   <NODE_LIST>
      <NODE NAME="lucifer01"/>
      <NODE NAME="lucifer02"/>
   </NODE_LIST>
</HOME>
</HOME_LIST>
<COMPOSITEHOME_LIST>
</COMPOSITEHOME_LIST>
</INVENTORY>