Best practice for maintenance-- are my steps right?

OS: Linux
DB: 11gr2, RAC two nodes primary, RAC two nodes standby
We just had a maintenance, I manually shutdown standby site ( deferred primary log_archive_dest_2_stat), stop crs. However I have following concerns:
1). When I stop both nodes crs, still have one more thing left which I cannot stop---init.ohasd run:
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'qaoracle01' has completed
CRS-4133: Oracle High Availability Services has been stopped.
[root]# ps -ef|grep d.bin
root 16841 16394 0 03:35 pts/0 00:00:00 grep d.bin
[root]# ps -ef|grep has
root 11411 1 0 Aug07 ? 00:00:00 /bin/sh /etc/init.d/init.ohasd run
root 16846 16394 0 03:35 pts/0 00:00:00 grep has
How to stop this service? Or is it ok to leave it there for server maintenance which requires reboot of server? Since Oracle documents only said use : crsctl stop crs, I would think it is ok to just leave this alone.
2). in order to automate this kind of maintenance in future, can I intergrate dbshutdown in the init so dba not have to involved in server maintenance?
What is the right steps?
Thanks in advance.

We just had a maintenance, I manually shutdown standby site ( deferred primary log_archive_dest_2_stat), stop crs. However I have following concerns:
1). When I stop both nodes crs, still have one more thing left which I cannot stop---init.ohasd run:
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'qaoracle01' has completed
CRS-4133: Oracle High Availability Services has been stopped.
[root]# ps -ef|grep d.bin
root 16841 16394 0 03:35 pts/0 00:00:00 grep d.bin
[root]# ps -ef|grep has
root 11411 1 0 Aug07 ? 00:00:00 /bin/sh /etc/init.d/init.ohasd run
root 16846 16394 0 03:35 pts/0 00:00:00 grep has
How to stop this service? Or is it ok to leave it there for server maintenance which requires reboot of server? Since Oracle documents only said use : crsctl stop crs, I would think it is ok to just leave this alone.If any of the cssdmonitor, cssdagent , occsd.bin processes are running then it has to navigate using init.ohasd.
If your CRS status is showing complete down, then i dont think its an still Harm. check whether these are running by using "ps -ef|grep" command.
if no processes are running, then start all the processes and perform clean shutdown once again. may be some times due to spawn process those sessions wont be released. So kill them before doing any server maintenance. so that there would be no problem in libraries and so on.
2). in order to automate this kind of maintenance in future, can I intergrate dbshutdown in the init so dba not have to involved in server maintenance?Yes, in case of server maintenance DBA involvement is not necessary. Of course not throughout the process. Of course before and after server maintenance. Hope this helps.

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