If "gpstate -e" reports a status of "Unknown -- unable to load segment status", for example:
$ gpstate -e
20260330:09:25:09:1958042 gpstate:cdw:gpadmin-[INFO]:-Starting gpstate with args: -e
20260330:09:25:09:1958042 gpstate:cdw:gpadmin-[INFO]:-local Greenplum Version: 'postgres (Greenplum Database) 6.31.1 build commit:68956df72b0696434917e81d0eeb23f708b60708'
20260330:09:25:09:1958042 gpstate:cdw:gpadmin-[INFO]:-Master Greenplum Version: 'PostgreSQL 9.4.26 (Greenplum Database 6.31.1 build commit:68956df72b0696434917e81d0eeb23f708b60708) on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 8.5.0 20210514 (Red Hat 8.5.0-28), 64-bit compiled on Nov 4 2025 01:26:14'
20260330:09:25:09:1958042 gpstate:cdw:gpadmin-[INFO]:-Obtaining Segment details from master...
20260330:09:25:09:1958042 gpstate:cdw:gpadmin-[INFO]:-Gathering data from segments...
................................................................
20260330:09:29:17:1958042 gpstate:cdw:gpadmin-[INFO]:-----------------------------------------------------
20260330:09:29:17:1958042 gpstate:cdw:gpadmin-[INFO]:-Segment Mirroring Status Report
20260330:09:29:19:1958042 gpstate:cdw:gpadmin-[INFO]:-----------------------------------------------------
20260330:09:29:19:1958042 gpstate:cdw:gpadmin-[INFO]:-Downed Segments (may include segments where status could not be retrieved)
20260330:09:29:19:1958042 gpstate:cdw:gpadmin-[INFO]:- Segment Port Config status Status
20260330:09:29:19:1958042 gpstate:cdw:gpadmin-[INFO]:- sdw3 7000 Up Unknown -- unable to load segment status
20260330:09:29:19:1958042 gpstate:cdw:gpadmin-[INFO]:- sdw3 7001 Up Unknown -- unable to load segment status
20260330:09:29:19:1958042 gpstate:cdw:gpadmin-[INFO]:- sdw3 7002 Up Unknown -- unable to load segment status
20260330:09:29:19:1958042 gpstate:cdw:gpadmin-[INFO]:- sdw3 7003 Up Unknown -- unable to load segment status
20260330:09:29:19:1958042 gpstate:cdw:gpadmin-[INFO]:- sdw3 7004 Up Unknown -- unable to load segment status
20260330:09:29:19:1958042 gpstate:cdw:gpadmin-[INFO]:- sdw3 7005 Up Unknown -- unable to load segment status
20260330:09:29:19:1958042 gpstate:cdw:gpadmin-[INFO]:- sdw3 7006 Up Unknown -- unable to load segment status
20260330:09:29:19:1958042 gpstate:cdw:gpadmin-[INFO]:- sdw3 7007 Up Unknown -- unable to load segment status
20260330:09:29:19:1958042 gpstate:cdw:gpadmin-[INFO]:- sdw3 6000 Up Unknown -- unable to load segment status
:
:
The message is usually reported when passwordless ssh connections from the coordinator to the segment hosts is failing.
Verify that it is possible to connect from the coordinator to the segment hosts with passwordless ssh connections.
The password for the "gpadmin" may be expired.