gpstop -a -M fast
bash greenplum-db-5.11.1-rhel7-x86_64.bin
cd /greenplum/soft/ && rm greenplum-db
ln -sv /greenplum/soft/greenplum-db-5.11.1 /greenplum/soft/greenplum-db
gpseginstall -f /home/gpadmin/seg_nodes
gpstart -a