Hello Community,
I tired using Docker Swarm Service Discovery in prometheus, but facing
problems using it. I followed the docker swarm support documentation
<https://prometheus.io/docs/guides/dockerswarm/>. Created a daemon.json
file and mounted /var/run/docker.sock in prometheus container. Container is
giving permission denied error as prometheus is running as nobody and
doesn't have access to mounted /var/run/docker.sock. Below is my
prometheus.yml.
Prometheus Version : v2.20.1
prometheus:
image: prom/prometheus
networks:
- monitor
ports:
- "9090:9090"
command:
- '--config.file=/etc/prometheus/prometheus.yml'
- '--storage.tsdb.path=/prometheus'
- '--storage.tsdb.retention=${PROMETHEUS_RETENTION:-24h}'
volumes:
- prometheus:/prometheus
- /home/efs/devops/dsm:/etc/prometheus:ro
- /var/run/docker.sock:/var/run/docker.sock:ro
deploy:
mode: replicated
replicas: 1
resources:
limits:
memory: 1024M
reservations:
memory: 128M
Prometheus.yml
scrape_configs:
- job_name: 'docker'
dockerswarm_sd_configs:
- host: unix:///var/run/docker.sock
role: nodes
Error:
[email protected] | level=error
ts=2020-08-06T07:21:19.106Z caller=refresh.go:98 component="discovery
manager scrape" discovery=dockerswarm msg="Unable to refresh target groups"
err="error while listing swarm nodes: Got permission denied while trying to
connect to the Docker daemon socket at unix:///var/run/docker.sock: Get
\"http://%2Fvar%2Frun%2Fdocker.sock/v1.24/nodes\": dial unix
/var/run/docker.sock: connect: permission denied
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