What is wrong in my docker-compose.yml file? - docker

Question

I need a little bit of help to find why my docker-compose.yml doesn't work. The story is that I have a docker-compose.yml who works (and who create Grafana, Prometheus, nodeexporter, cAdvisor and alertManager) then I want to do one without Grafana so I just removed all the Grafana things of the file but it doesn't work.
the one who works :
version: '2'
networks:
monitor-net:
driver: bridge
volumes:
prometheus_data: {}
grafana_data: {}
services:
prometheus:
image: prom/prometheus
container_name: prometheus
volumes:
- ./prometheus/:/etc/prometheus/
- prometheus_data:/prometheus
command:
- '-config.file=/etc/prometheus/prometheus.yml'
- '-storage.local.path=/prometheus'
- '-alertmanager.url=http://alertmanager:9093'
- '-storage.local.memory-chunks=100000'
restart: unless-stopped
expose:
- 9090
ports:
- 9090:9090
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
alertmanager:
image: prom/alertmanager
container_name: alertmanager
volumes:
- ./alertmanager/:/etc/alertmanager/
command:
- '-config.file=/etc/alertmanager/config.yml'
- '-storage.path=/alertmanager'
restart: unless-stopped
expose:
- 9093
ports:
- 9093:9093
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
nodeexporter:
image: prom/node-exporter
container_name: nodeexporter
restart: unless-stopped
expose:
- 9100
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
cadvisor:
image: google/cadvisor:v0.24.1
container_name: cadvisor
volumes:
- /:/rootfs:ro
- /var/run:/var/run:rw
- /sys:/sys:ro
- /var/lib/docker/:/var/lib/docker:ro
restart: unless-stopped
expose:
- 8080
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
grafana:
image: grafana/grafana
container_name: grafana
volumes:
- grafana_data:/var/lib/grafana
env_file:
- user.config
restart: unless-stopped
expose:
- 3000
ports:
- 3000:3000
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
The one who doesn't work:
version: '2'
networks:
monitor-net:
driver: bridge
volumes:
prometheus_data: {}
services:
prometheus:
image: prom/prometheus
container_name: prometheus
volumes:
- ./prometheus/:/etc/prometheus/
- prometheus_data:/prometheus
command:
- '-config.file=/etc/prometheus/prometheus.yml'
- '-storage.local.path=/prometheus'
- '-alertmanager.url=http://alertmanager:9093'
- '-storage.local.memory-chunks=100000'
restart: unless-stopped
expose:
- 9090
ports:
- 9090:9090
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
alertmanager:
image: prom/alertmanager
container_name: alertmanager
volumes:
- ./alertmanager/:/etc/alertmanager/
command:
- '-config.file=/etc/alertmanager/config.yml'
- '-storage.path=/alertmanager'
restart: unless-stopped
expose:
- 9093
ports:
- 9093:9093
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
nodeexporter:
image: prom/node-exporter
container_name: nodeexporter
restart: unless-stopped
expose:
- 9100
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
cadvisor:
image: google/cadvisor
container_name: cadvisor
volumes:
- /:/rootfs:ro
- /var/run:/var/run:rw
- /sys:/sys:ro
- /var/lib/docker/:/var/lib/docker:ro
restart: unless-stopped
expose:
- 8080
networks:
- monitor-net
labels:
org.label-schema.group: "monitoring"
With the second one the container Prometheus can't run and the logs are:
level=info msg="Starting prometheus (version=1.5.2, branch=master, revision=bd1182d29f462c39544f94cc822830e1c64cf55b)" source="main.go:75"
level=info msg="Build context (go=go1.7.5, user=root#1a01c5f68840, date=20170220-07:00:00)" source="main.go:76"
level=info msg="Loading configuration file /etc/prometheus/prometheus.yml" source="main.go:248"
level=error msg="Error opening memory series storage: leveldb: manifest corrupted (field 'comparer'): missing [file=MANIFEST-000009]" source="main.go:182"

Answer 1

The fact that Prometheus at least starts and then errors out means that your compose files is probably correct.
It seems to at least try to load the configuration file /etc/prometheus/prometheus.yml and fails doing so.
In the compose file I see that it adds a host volume which is expected to exist on your host system at location ./prometheus/. Did you also copy this folder and it's contents? If yes, did you verify that the configuration is correct and is expected to work without Grafana? Also it's important what your current directory is when you run docker-compose, it must be where the ./prometheus/ directory is located.