Apply 17272753 PSU on GI and RAC

We have a 2 node RAC running GI and DB , both on 11.2.0.2 and have 4 DB's and ASM. We want to apply 17272753 PSU on GI and RAC DB at the same time with minimal outage. None of the binaries are not shared between nodes. The read me file accomanying the patch suggests

# opatch auto <UNZIPPED_PATCH_LOCATION>

however it doesn't say if it will cause outage on one node at a time or both nodes. My questions is

1. If I run on node1 as root , will it cause GI and all 4 DB , plus ASM go down only on node1 ?

2. if I run on node1 will the opatch ask me to take GI and 4 instances and ASM2 to be taken down manually before applying patch on node2?