Error initialize process greenplum major upgrade 5.29.12 to 6.25.2 on centos 7

[DoDy28]

hi all, we have a problem when Upgrade main greenplum version 5.29.12 to 6.25.2 on centos 7, when our initialization process has failed in substep saving_source_cluster_config. you can see the cli.log for detail process
cli.log :
[INFO]: Verifying source and target cluster versions... [SKIPPED]
[INFO]: -----------------------------------------------------------------------------
[INFO]: Saving source cluster configuration... [IN PROGRESS]
[INFO]: Executing: "/opt/greenplum-db-5.29.12/bin/postgres --gp-version"
[INFO]: connecting to source cluster with: "postgresql://localhost:5432/template1?search_path="
[INFO]: Executing: "/opt/greenplum-db-5.29.12/bin/postgres --gp-version"
[INFO]: Saving source cluster configuration... [FAILED]
[INFO]: Saving source cluster configuration... [5m1s]
[INFO]: -----------------------------------------------------------------------------
[INFO]: Initialize [5m1s]
[INFO]: substep "saving_source_cluster_config": 5m0s timeout exceeded waiting for all segments to be up, in their preferred roles, and synchronized.
We've tried to add time out in postgres.conf dan we check the status all segments already up