for i in $(consul members | grep awk {'print $2'} | cut -d ":" -f1) ; do sshpass -p $PASSWORD ssh -oStrictHostKeyChecking=no -q root@$i "hostname && yum clean all && yum -y update consul && systemctl restart consul.service" ; done

consul members | ... awk {'print $2'} | cut -d ":" -f1 |
parallel -j 10 sshpass -p "$PASSWORD" ssh -oStrictHostKeyChecking=no -q root@{} "hostname && yum clean all && yum -y update consul && systemctl restart consul.service"

pssh -h <(consul members | grep awk {'print $2'} | cut -d ":" -f1) -o /tmp/update-consul-servers -i "yum clean all && yum -y update consul && systemctl restart consul.service"