Old pcs-0.9.167/0.9.168/0.9.169 package with newer corosync-3.1 and pacemaker-2.1 on RHEL 7.7

Hi folks, Thank you for your time and will to help. We are in the middle of a high pressure because some problems with RHEL HA Cluster/Corosync+Pacemaker/DRBD and we arrived at the point that we upgraded corosync 2.4.3 to 3.1 and pacemaker 1.1.20 to 2.1 but then our setup gives errors with the command "pcs property set no-quorum-policy=stop". The error is: No such file or directory', 'command': '/usr/libexec/pacemaker/pengine metadata' Indeed /usr/libexec/pacemaker/pengine does not exists, I assume it is OK, because in the new pacemaker 3.1 the internal structure was changed.. In the midtime we found out that we could archive the same setting using crm_attribute --name no-quorum-policy -update stop. My questions are: * Is there a reason that pcs has no build for RHEL 7? * Is the crm_attribute the right choice for setting cluster properties and will cover all usecases? * Thank You! BR, Szabolcs