安装数据库软件报错INS-35423

安装完grid，运行./runInstaller安装数据库软件时报错：

[FATAL] [INS-35423]安装程序检测到 Oracle Clusterware 未在本地节点上运行

详细日志：

SEVERE: [FATAL] [INS-35423] The installer has detected that Oracle Clusterware is not running on local node.
  CAUSE: You have chosen to install Oracle RAC when Oracle Clusterware stack is not running on the local node.
  ACTION: Start the Oracle Clusterware stack by running the following command as the root user from the Oracle Clusterware home (Grid home) : /bin/crsctl start crs. When the Oracle Clusterware stack is running, restart the installer and continue with the Oracle RAC installation.

oracle.ops.mgmt.cluster.RemoteShellException: PRKC-1044 : Failed to check remote command execution setup for node racnode1-mgmt using shells /usr/bin/ssh and /usr/bin/rsh
racnode1-mgmt: Connection refused
at oracle.ops.mgmt.nativesystem.UnixSystem.checkRemoteExecutionSetup(UnixSystem.java:2249)
···

/etc/hosts 文件配置有问题，hostname没有排在第一位

# hostname

racnode1

# grep racnode1 /etc/hosts 

192.168.100.101 racnode1-mgmt racnode1

修改为：

192.168.100.101 racnode1 racnode1-mgmt