oracle linux 7.3上安装11.2.0.4单实例，GI执行root.sh失败

在oracle linux 7.3上安装11.2.0.4单实例，GI执行root.sh失败。

ALERT LOG 
-------------- 
Filename=roothas.log 

>End Command output 
2018-01-16 08:56:18: itab entries=cssd|evmd|crsd|ohasd 
2018-01-16 08:56:18: Executing /sbin/init q 
2018-01-16 08:56:18: Executing cmd: /sbin/init q 
2018-01-16 08:56:23: Created backup /etc/inittab.no_crs 
2018-01-16 08:56:23: Appending to /etc/inittab.tmp: 
2018-01-16 08:56:23: h1:35:respawn:/etc/init.d/init.ohasd run >/dev/null 2>&1 </dev/null 

2018-01-16 08:56:23: Done updating /etc/inittab.tmp 
2018-01-16 08:56:23: Saved /etc/inittab.crs 
2018-01-16 08:56:23: Installed new /etc/inittab 
2018-01-16 08:56:23: Executing /sbin/init q 
2018-01-16 08:56:23: Executing cmd: /sbin/init q 
2018-01-16 08:56:24: Executing cmd: /u01/app/11.2.0.4/grid/bin/crsctl start has 
2018-01-16 08:58:24: Command output: 
> CRS-4124: Oracle High Availability Services startup failed. 
> CRS-4000: Command Start failed, or completed with errors. 
>End Command output 
2018-01-16 08:58:24: Executing /etc/init.d/ohasd install 
2018-01-16 08:58:24: Executing cmd: /etc/init.d/ohasd install 
2018-01-16 08:58:24: ohasd failed to start 
2018-01-16 08:58:24: ohasd failed to start 
2018-01-16 08:58:24: Alert log is /u01/app/11.2.0.4/grid/log/lxtepoods1/alertlxtepoods1.log 
2018-01-16 08:58:24: Failed to start service 'ohasd' 
2018-01-16 08:58:24: ###### Begin DIE Stack Trace ###### 
2018-01-16 08:58:24: Package File Line Calling 
2018-01-16 08:58:24: --------------- -------------------- ---- ---------- 
2018-01-16 08:58:24: 1: main roothas.pl 217 crsconfig_lib::dietrap 
2018-01-16 08:58:24: 2: main roothas.pl 377 main::__ANON__ 

根据日志可以看到在启动ohasd 时，它使用的是initd 脚本，根据文档 Install of Clusterware fails while running root.sh on OL7 - ohasd fails to start ( Doc ID 1959008.1 )， OL7 开始使用了systemd，所以需要打patch 18370031来解决这个问题。

参考文档How to Proceed from Failed 11gR2 Grid Infrastructure (CRS) Installation ( Doc ID 942166.1 )， 先deconfig 然后打patch， 再运行root.sh的方法