gNMI_with_grafana on containerlabs

root@digi-oss:/home/labadmin/mohan/2jan26_grafana# cat sr_lab.clab.yml

name: sr_lab
topology:
nodes:
sr1: {kind: nokia_srlinux, image: ghcr.io/nokia/srlinux:latest, startup-config: sr1.cfg}
sr2: {kind: nokia_srlinux, image: ghcr.io/nokia/srlinux:latest, startup-config: sr2.cfg}
# gNMIc Collector
gnmic:
kind: linux
image: ghcr.io/openconfig/gnmic:latest
binds: [gnmic-config.yml:/app/gnmic-config.yml:ro]
cmd: "--config /app/gnmic-config.yml subscribe"
# Prometheus TSDB
prometheus:
kind: linux
image: prom/prometheus:latest
binds: [prometheus.yml:/etc/prometheus/prometheus.yml:ro]
ports: ["9090:9090"]
# Grafana Visualization
grafana:
kind: linux
image: grafana/grafana:latest
ports: ["3000:3000"]
links:
- endpoints: ["sr1:e1-1", "sr2:e1-1"]

root@digi-oss:/home/labadmin/mohan/2jan26_grafana# cat sr1.cfg
set / interface ethernet-1/1 admin-state enable
set / interface ethernet-1/1 subinterface 0 ipv4 admin-state enable
set / interface ethernet-1/1 subinterface 0 ipv4 address 192.168.0.1/31
set / network-instance default interface ethernet-1/1.0

root@digi-oss:/home/labadmin/mohan/2jan26_grafana# cat sr2.cfg
set / interface ethernet-1/1 admin-state enable
set / interface ethernet-1/1 subinterface 0 ipv4 admin-state enable
set / interface ethernet-1/1 subinterface 0 ipv4 address 192.168.0.0/31
set / network-instance default interface ethernet-1/1.0

root@digi-oss:/home/labadmin/mohan/2jan26_grafana# cat gnmic-config.yml
targets:
sr1: {address: "sr1:57400", username: admin, password: NokiaSrl1!, skip-verify: true}
sr2: {address: "sr2:57400", username: admin, password: NokiaSrl1!, skip-verify: true}
subscriptions:
interface-stats:
paths: ["/interface[name=ethernet-1/1]/statistics"]
stream-mode: sample
sample-interval: 5s
outputs:
prom-output:
type: prometheus
listen: ":9804" # Prometheus will scrape this address

root@digi-oss:/home/labadmin/mohan/2jan26_grafana# cat prometheus.yml
scrape_configs:
- job_name: 'gnmic-telemetry'
static_configs:
- targets: ['gnmic:9804']

root@digi-oss:/home/labadmin/mohan/2jan26_grafana# sudo containerlab deploy -t sr_lab.clab.yml

13:20:16 INFO Containerlab started version=0.71.1

13:20:16 INFO Parsing & checking topology file=sr_lab.clab.yml

13:20:16 INFO Creating lab directory path=/home/labadmin/mohan/2jan26_grafana/clab-sr_lab

13:20:16 INFO Creating container name=grafana

13:20:16 INFO Creating container name=sr2

13:20:16 INFO Creating container name=prometheus

13:20:16 INFO Creating container name=sr1

13:20:16 INFO Creating container name=gnmic

13:20:16 INFO Running postdeploy actions kind=nokia_srlinux node=sr1

13:20:16 INFO Created link: sr1:e1-1 ▪┄┄▪ sr2:e1-1

13:20:16 INFO Running postdeploy actions kind=nokia_srlinux node=sr2

13:20:40 INFO Adding host entries path=/etc/hosts

13:20:40 INFO Adding SSH config for nodes path=/etc/ssh/ssh_config.d/clab-sr_lab.conf

🎉 A newer containerlab version (0.72.0) is available!

Release notes: https://containerlab.dev/rn/0.72/

Run 'sudo clab version upgrade' or see https://containerlab.dev/install/ for installation options.

╭────────────────────────┬─────────────────────────────────┬─────────┬───────────────────╮

│ Name │ Kind/Image │ State │ IPv4/6 Address │

├────────────────────────┼─────────────────────────────────┼─────────┼───────────────────┤

│ clab-sr_lab-gnmic │ linux │ running │ 172.20.20.11 │

│ │ ghcr.io/openconfig/gnmic:latest │ │ 3fff:172:20:20::b │

│ clab-sr_lab-grafana │ linux │ running │ 172.20.20.8 │

│ │ grafana/grafana:latest │ │ 3fff:172:20:20::8 │

│ clab-sr_lab-prometheus │ linux │ running │ 172.20.20.7 │

│ │ prom/prometheus:latest │ │ 3fff:172:20:20::7 │

│ clab-sr_lab-sr1 │ nokia_srlinux │ running │ 172.20.20.9 │

│ │ ghcr.io/nokia/srlinux:latest │ │ 3fff:172:20:20::9 │

│ clab-sr_lab-sr2 │ nokia_srlinux │ running │ 172.20.20.10 │

│ │ ghcr.io/nokia/srlinux:latest │ │ 3fff:172:20:20::a │

╰────────────────────────┴─────────────────────────────────┴─────────┴───────────────────╯

Deploy and Visualize

Deploy: Run sudo containerlab deploy -t sr_lab.clab.yml.
Access Prometheus: Go to http://localhost:9090 to verify the targets are "UP" and query srl_interface_statistics_out_unicast_packets.
Access Grafana: Go to http://localhost:3000 (default login: admin/admin).
Add Prometheus as a data source with the URL http://prometheus:9090.
Create a new dashboard and use the metric

interface_statistics_out_unicast_packets to see your real-time ping traffic.

## port-forward (to access from laptop browser locally)
[mponnusa.W10-GdghJqoDo1t] ⮞ ssh -L 3000:localhost:3000 -L 9090:localhost:9090 -L 57400:localhost:57400 labadmin@172.27.69.49
Welcome to Ubuntu 24.04 LTS (GNU/Linux 6.8.0-85-generic x86_64)

##verify GNMI-getting-it
root@digi-oss:/home/labadmin# curl http://172.20.20.11:9804/metrics
# HELP interface_statistics_carrier_transitions gNMIc generated metric
# TYPE interface_statistics_carrier_transitions untyped
interface_statistics_carrier_transitions{interface_name="ethernet-1/1",source="sr1",subscription_name="interface-stats"} 0
interface_statistics_carrier_transitions{interface_name="ethernet-1/1",source="sr2",subscription_name="interface-stats"} 0
# HELP interface_statistics_in_broadcast_packets gNMIc generated metric
# TYPE interface_statistics_in_broadcast_packets untyped

1.Check Target-Health