synology snmp error

[skysolf2]

I do everything follow your readme file. enable synology snmp v3,set user name is zhangsan,and en set two diff password

change snmp.yaml username,password,and priv_password

change your_real_host_ip to my nas ip 192.168.31.2

after run it container snmp-expertor allways shows error： ts=2024-07-24T15:55:53.555Z caller=collector.go:367 level=info auth=snmpv3 target=192.168.31.2 source_address= worker=0 module=synology msg="Error scraping target" err="scrape cancelled after 5.000240416s (possible timeout) getting target 192.168.31.2"

[skysolf2]

my compose.yaml

version: "3.9"

services:
  grafana:
    image: grafana/grafana:latest
    container_name: Grafana
    hostname: grafana
    networks:
      - grafana_net
    mem_limit: 512m
    cpu_shares: 512
    security_opt:
      - no-new-privileges:true
    user: 0:0
    healthcheck:
      test: wget --no-verbose --tries=1 --spider http://localhost:3000/api/health
    ports:
      - 3340:3000
    volumes:
      - /volume1/docker/metrics/grafana:/var/lib/grafana:rw
    environment:
      TZ: Asia/Shanghai
      GF_INSTALL_PLUGINS: grafana-clock-panel,grafana-simple-json-datasource,natel-discrete-panel,grafana-piechart-panel
    restart: unless-stopped

  prometheus:
    image: prom/prometheus
    command:
      - '--storage.tsdb.retention.time=60d'
      - '--config.file=/etc/prometheus/prometheus.yml'
    container_name: Prometheus
    hostname: prometheus
    networks:
      - grafana_net
      - prometheus_net
    mem_limit: 1g
    cpu_shares: 768
    security_opt:
      - no-new-privileges=true
    user: 0:0
    healthcheck:
      test: wget --no-verbose --tries=1 --spider http://localhost:9090/ || exit 1
    volumes:
      - /volume1/docker/metrics/prometheus:/prometheus:rw
      - /volume1/docker/metrics/prometheus.yml:/etc/prometheus/prometheus.yml:ro
    restart: unless-stopped

  node-exporter:
    image: prom/node-exporter:latest
    command:
      - --collector.disable-defaults
      - --collector.stat
      - --collector.time
      - --collector.cpu
      - --collector.loadavg
      - --collector.hwmon
      - --collector.meminfo
      - --collector.diskstats
    container_name: Node_Exporter
    hostname: nodeexporter
    networks:
      - prometheus_net
    mem_limit: 256m
    mem_reservation: 64m
    cpu_shares: 512
    security_opt:
      - no-new-privileges=true
    read_only: true
    user: 0:0
    healthcheck:
      test: wget --no-verbose --tries=1 --spider http://localhost:9100/
    restart: unless-stopped

  snmp-exporter:
    image: prom/snmp-exporter:latest
    command:
      - '--config.file=/etc/snmp_exporter/snmp.yml'
    container_name: SNMP_Exporter
    hostname: snmp
    networks:
      - prometheus_net
    mem_limit: 256m
    mem_reservation: 64m
    cpu_shares: 512
    security_opt:
      - no-new-privileges:true
    read_only: true
    user: 0:0
    healthcheck:
      test: wget --no-verbose --tries=1 --spider http://localhost:9116/ || exit 1
    volumes:
      - /volume1/docker/metrics/snmp.yml:/etc/snmp_exporter/snmp.yml:ro

    restart: unless-stopped

  cadvisor:
    image: gcr.io/cadvisor/cadvisor:latest
    command:
      - '--docker_only=true'
    container_name: cAdvisor
    hostname: cadvisor
    networks:
      - prometheus_net
    mem_limit: 256m
    mem_reservation: 64m
    cpu_shares: 512
    security_opt:
      - no-new-privileges=true
    read_only: true
    volumes:
      - /:/rootfs:ro
      - /var/run:/var/run:ro
      - /sys:/sys:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro
    restart: unless-stopped

  speedtest_exporter:
    image: ghcr.io/danopstech/speedtest_exporter:latest
    container_name: speedtest_exporter
    hostname: speedtest
    networks:
      - prometheus_net
    security_opt:
      - no-new-privileges=true
    read_only: true
    user: 0:0
    restart: unless-stopped

networks:
  grafana_net:
    name: grafana_net
    ipam:
      config:
        - subnet: 172.22.1.0/24
  prometheus_net:
    name: prometheus_net
    ipam:
      config:
        - subnet: 172.22.0.0/24

[wozniakpawel]

I am sorry, I am not able to provide individual support and debug for non-standard configurations because that would mean I have to replicate this on my Synology first.

Things that are not following the instruction:

• modified volume paths in compose.yaml
• used root user uid and gid instead of a dedicated Docker user as suggested
• used a different than suggested username for snmpv3

There might be more, I haven't seen the rest of your setup. Try following the instructions exactly and it really should just work because it works for most users. If you do follow all the instructions exactly and still encounter an issue, I will be able to help. It is possible you hit some corner case that does not work for your setup, but I won't be able to figure out what exactly is causing the issue if we change 10 other things at the same time.

I would start off by making sure firewall settings are okay (or fw is off completely), this is usually the number one reason for things not working in Docker.