GNMI telemetry GET works but subscribe does not

[Gabriela Precup]

Hello!

I have a sonic with the version:
SONiC Software Version: SONiC.master.1154584-e58355014
SONiC OS Version: 13
Distribution: Debian 13.5
Kernel: 6.12.41+deb13-sonic-amd64
Build commit: e58355014
Build date: Thu Jul 3 15:22:23 UTC 2026
Built by: azureuser@fad30244c000004

Platform: x86_64-kvm_x86_64-r0
HwSKU: Force10-S6000
ASIC: vs
ASIC Count: 1
Serial Number: N/A
Model Number: N/A
Hardware Revision: N/A
Uptime: 21:17:12 up 18 days,  4:37,  1 user,  load average: 0.13, 0.19, 0.28
Date: Tue 21 Jul 2026 21:17:12

Docker images:
REPOSITORY                    TAG                        IMAGE ID       SIZE
docker-teamd                  latest                     04afa7c40217   324MB
docker-teamd                  master.1154584-e58355014   04afa7c40217   324MB
docker-dash-ha                latest                     43858f209056   344MB
docker-dash-ha                master.1154584-e58355014   43858f209056   344MB
docker-lldp                   latest                     75504a81ddc2   293MB
docker-lldp                   master.1154584-e58355014   75504a81ddc2   293MB
docker-syncd-vs               latest                     3a5319b7791f   2.53GB
docker-syncd-vs               master.1154584-e58355014   3a5319b7791f   2.53GB
docker-orchagent              latest                     5a6240605446   340MB
docker-orchagent              master.1154584-e58355014   5a6240605446   340MB
docker-dash-engine            latest                     fff066e732c7   598MB
docker-dash-engine            master.1154584-e58355014   fff066e732c7   598MB
docker-router-advertiser      latest                     1c24b64c796a   284MB
docker-router-advertiser      master.1154584-e58355014   1c24b64c796a   284MB
docker-snmp                   latest                     ccaab9f80e91   311MB
docker-snmp                   master.1154584-e58355014   ccaab9f80e91   311MB
docker-sflow                  latest                     ee93c3201f2f   325MB
docker-sflow                  master.1154584-e58355014   ee93c3201f2f   325MB
docker-mux                    latest                     65dbc7b9b2c2   298MB
docker-mux                    master.1154584-e58355014   65dbc7b9b2c2   298MB
docker-gnmi-sidecar           latest                     d79254ae9ed6   284MB
docker-gnmi-sidecar           master.1154584-e58355014   d79254ae9ed6   284MB
docker-sonic-bmp              latest                     898a61b4eebb   286MB
docker-sonic-bmp              master.1154584-e58355014   898a61b4eebb   286MB
docker-macsec                 latest                     160c519c94f7   327MB
docker-macsec                 master.1154584-e58355014   160c519c94f7   327MB
docker-fpm-frr                latest                     20c4d55992ef   389MB
docker-fpm-frr                master.1154584-e58355014   20c4d55992ef   389MB
docker-restapi-sidecar        latest                     c66b97063997   284MB
docker-restapi-sidecar        master.1154584-e58355014   c66b97063997   284MB
docker-platform-monitor       latest                     5c3d389c6a67   404MB
docker-platform-monitor       master.1154584-e58355014   5c3d389c6a67   404MB
docker-database               latest                     f40c932faff3   291MB
docker-database               master.1154584-e58355014   f40c932faff3   291MB
docker-nat                    latest                     a4f4acb92b4f   327MB
docker-nat                    master.1154584-e58355014   a4f4acb92b4f   327MB
docker-sonic-otel             latest                     4fb937d6a53d   626MB
docker-sonic-otel             master.1154584-e58355014   4fb937d6a53d   626MB
docker-bmp-watchdog           latest                     f5baaf566c15   282MB
docker-bmp-watchdog           master.1154584-e58355014   f5baaf566c15   282MB
docker-sysmgr                 latest                     0f4a768a17f2   289MB
docker-sysmgr                 master.1154584-e58355014   0f4a768a17f2   289MB
docker-sonic-gnmi             latest-orig                1ca0efb2bd9e   431MB
docker-sonic-gnmi             master.1154584-e58355014   1ca0efb2bd9e   431MB
docker-dhcp-relay             latest                     7178e050d858   327MB
docker-dhcp-relay             master.1154584-e58355014   7178e050d858   327MB
docker-sonic-mgmt-framework   latest                     ccf62ba53293   348MB
docker-sonic-mgmt-framework   master.1154584-e58355014   ccf62ba53293   348MB
docker-gbsyncd-vs             latest                     54c392288e7a   2.53GB
docker-gbsyncd-vs             master.1154584-e58355014   54c392288e7a   2.53GB
docker-eventd                 latest                     7dc35b764eb4   284MB
docker-eventd                 master.1154584-e58355014   7dc35b764eb4   284MB
docker-gnmi-watchdog          latest                     fb07f557292a   289MB
docker-gnmi-watchdog          master.1154584-e58355014   fb07f557292a   289MB


I searched through the documentation and the only config I found for GNMI was adding the certificates and setting port 50051 which I did, but did not help, so I restarted the telemetry without authentication and on port 8080.

My issue is that command gnmic  -a myIP:8080 --skip-verify  -u myuser  -p password  get --path "/openconfig-interfaces:interfaces" works and I get an output which means that GNMI is working, but when I try any command with sample or subscribe it just waits and does nothing. I have tried flopping a specific interface, yet I do not receive any updates.

Is there any other config that must be done for the changes to be pushed to telemetry?

Thank you!