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Install on Both Nodes

rpm --import 
rpm -Uvh 
yum install -y kmod-drbd84 drbd84-utils 
semanage permissive -a drbd_t
modprobe drbd

Configure Global Parameters

sudo mv /etc/drbd.d/global_common.conf /etc/drbd.d/global_common.conf.bak
cat << EOL >/etc/drbd.d/global_common.conf
global {
        usage-count no;
common {
        handlers {
                split-brain "/usr/lib/drbd/ root";
        options {
		 on-no-data-accessible io-error;
        disk {
                resync-rate 30M;        
        net {
		protocol C;
		csums-alg sha1;
		shared-secret sync_disk;
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