context deadline exceeded for junos_exporter container

[panks21]

Hi I need some help as I am not able to figure out the solution. I used portainer to deploy the stack using following docker-compose

---

version: "3"

volumes: prometheus-data: driver: local grafana-data: driver: local

services: prometheus: image: prom/prometheus:latest container_name: prometheus ports: - "9090:9090" volumes: - /etc/prometheus:/etc/prometheus - prometheus-data:/prometheus restart: unless-stopped command: - "--config.file=/etc/prometheus/prometheus.yml"

grafana: image: grafana/grafana-oss:latest container_name: grafana ports: - "4000:3000" volumes: - grafana-data:/var/lib/grafana restart: unless-stopped

junos_exporter: image: czerwonk/junos_exporter container_name: junos_exporter ports: - 9326:9326 restart: unless-stopped volumes: - /root/junos_exporter_config.yml:/config.yml:ro

---

However prometheus shows the target as down all the time with error as "Get "http://junos_exporter:9326/metrics?target=10.2.14.254": context deadline exceeded"

prometheus.yml file is as below

---

global:

scrape_interval: 30s

scrape_timeout: 30s

scrape_configs:

• job_name: "prometheus" static_configs:
  • targets: ["localhost:9090"]
• job_name: 'junos' static_configs:
  • targets:
    • 10.2.14.254 # Target Device relabel_configs:
  • source_labels: [address] target_label: __param_target
  • source_labels: [__param_target] target_label: instance
  • target_label: address replacement: junos_exporter:9326 # The junos_exporter's real hostname:port

---

Even the curl to the host on port 9326 doesn't result in anything but the container is shown as healthy and no error logs present for the container

[4xoc]

You probably have to increase your scrape_timeout. Depending on the hardware device a scrape takes a long time because the control plane cpu isn't too fast for the high number of cli commands than can result from using the exporter. You probably need to experiment a bit with different models to find out the largest stable timeout. Maybe use multiple jobs for different devices.

Couple of examples of timeout I know to be good (typically with most exporter features enabled): MX480/MX960 = 30s EX4200/EX4300/SRX300/SRX320/SRX340/SRX345 is < 2m