Add a Node to Oracle 12cR1 RAC on RHEL 6(一)

OracleOracle RACOracle ASMOracle Database 12c
The generic steps to follow when adding the new node to the cluster are:
Install Operating System
Install required software
Add/modify users and groups required for the installation
Configure network
Configure kernel parameters
Configure services required such as NTP
Configure storage (multipathing, zoning, storage discovery,UDEV, ASMLib)

zhongwc3 node 
[root@zhongwc3 ~]# cat /home/oracle/.bash_profile   
# .bash_profile  
  
# Get the aliases and functions  
if [ -f ~/.bashrc ]; then  
        . ~/.bashrc  
fi  
  
# User specific environment and startup programs  
  
PATH=$PATH:$HOME/bin  
  
export PATH  
  
  
alias ls="ls -FA"  
  
ORACLE_SID=zwc3; export ORACLE_SID  
JAVA_HOME=/usr/local/java; export JAVA_HOME  
ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE  
ORACLE_HOME=$ORACLE_BASE/product/12.1.0/db_1; export ORACLE_HOME  
ORACLE_PATH=/u01/app/common/oracle/sql; export ORACLE_PATH  
ORACLE_TERM=xterm; export ORACLE_TERM  
  
TNS_ADMIN=$ORACLE_HOME/network/admin; export TNS_ADMIN  
ORA_NLS11=$ORACLE_HOME/nls/data; export ORA_NLS11  
NLS_LANG=AMERICAN_AMERICA.ZHS16GBK; export NLS_LANG  
  
PATH=.:${JAVA_HOME}/bin:${PATH}:$HOME/bin:$ORACLE_HOME/bin:$ORACLE_HOME/OPatch  
PATH=${PATH}:/usr/bin:/bin:/usr/bin/X11:/usr/local/bin  
PATH=${PATH}:/u01/app/common/oracle/bin  
export PATH  
  
LD_LIBRARY_PATH=$ORACLE_HOME/lib  
LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:$ORACLE_HOME/oracm/lib  
LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/lib:/usr/lib:/usr/local/lib  
export LD_LIBRARY_





PATH  
  
CLASSPATH=$ORACLE_HOME/JRE  
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/jlib  
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/rdbms/jlib  
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/network/jlib  
export CLASSPATH  
  
THREADS_FLAG=native; export THREADS_FLAG  
  
export TEMP=/tmp  
export TMPDIR=/tmp  
  
umask 022  
[root@zhongwc3 ~]# cat /home/grid/.bash_profile   
# .bash_profile  
  
# Get the aliases and functions  
if [ -f ~/.bashrc ]; then  
        . ~/.bashrc  
fi  
  
# User specific environment and startup programs  
  
PATH=$PATH:$HOME/bin  
  
export PATH  
  
  
alias ls="ls -FA"  
  
ORACLE_SID=+ASM3; export ORACLE_SID  
JAVA_HOME=/usr/local/java; export JAVA_HOME  
ORACLE_BASE=/u01/app/grid; export ORACLE_BASE  
ORACLE_HOME=/u01/app/12.1.0/grid; export ORACLE_HOME  
ORACLE_PATH=/u01/app/oracle/common/oracle/sql; export ORACLE_PATH  
ORACLE_TERM=xterm; export ORACLE_TERM  
  
TNS_ADMIN=$ORACLE_HOME/network/admin; export TNS_ADMIN  
ORA_NLS11=$ORACLE_HOME/nls/data; export ORA_NLS11  
NLS_LANG=AMERICAN_AMERICA.ZHS16GBK; export NLS_LANG  
  
PATH=.:${JAVA_HOME}/bin:${PATH}:$HOME/bin:$ORACLE_HOME/bin:$ORACLE_HOME/OPatch  
PATH=${PATH}:/usr/bin:/bin:/usr/bin/X11:/usr/local/bin  
PATH=${PATH}:/u01/app/common/oracle/bin  
export PATH  
  
LD_LIBRARY_PATH=$ORACLE_HOME/lib  
LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:$ORACLE_HOME/oracm/lib  
LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/lib:/usr/lib:/usr/local/lib  
export LD_LIBRARY_PATH  
  
CLASSPATH=$ORACLE_HOME/JRE  
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/jlib  
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/rdbms/jlib  
CLASSPATH=${CLASSPATH}:$ORACLE_HOME/network/jlib  
export CLASSPATH  
  
THREADS_FLAG=native; expo