Yet Another Ansible clone of ssh+make in GNU Make

Makefile

## Execute:
## NUM_THREADS=4 make --jobs=${NUM_THREADS} RHOSTS="host1.local host2.local host3.local" CMD="whoami" RUSER="${USER}"

## RUNTIME flags
NUM_THREADS	:= 1
RHOSTS		:= example.com
CMD		:= uptime
RUSER		:= root
SSH_FLAGS	:= -l $(RUSER)
###

all: $(RHOSTS)

$(RHOSTS):
	@ssh $(SSH_FLAGS) $@ $(CMD)

addkey:
	@echo $(RHOSTS) | xargs -I{} ssh-copy-id $(RUSER)@{}