Where are Traefik logs? - docker

Question

Do you happen to know where the Traefik logs are located? I read the documentation on Traefik and it says it will output to stdout but when I start the docker container with docker-compose up -d it doesn't show anything in stdout after I try the domain name and pull up multiple linked docker containers.
I also tried to specify these:
[traefikLog]
filePath = "./traefik.log" #<--Tried this but It doesn't work, file empty and permissions set to 777
[accessLog]
filePath = "./access.log" #<--Tried this but doesn't work, file empty and permissions set to 777
I'm confused, am I missing something? or is Traefik supposed to be this quiet?
When I run it this is all I see, nothing afterwards.
# docker-compose up
Creating traefik ... done
Attaching to traefik
Attached is my config. Thanks.
traefik/traefik.toml:
logLevel = "DEBUG"
defaultEntryPoints = ["http","https"]
[api]
address = ":8080"
[traefikLog]
filePath = "./traefik.log" #<--Tried this but It doesn't work
[accessLog]
filePath = "./access.log" #<--Tried this but doesn't work
[entryPoints]
[entryPoints.http]
#redirect ALL http traffic to https 443
address = ":80"
[entryPoints.http.redirect]
entryPoint = "https"
[entryPoints.https]
address = ":443"
[entryPoints.https.tls]
#Let's encrypt setup
[acme]
email = "email#email.com"
storage = "acme.json"
entryPoint = "https"
acmeLogging = true
#When new host is created, request certificate.
onHostRule = true
onDemand = false
[acme.httpChallenge]
entryPoint = "http"
#Watch Docker, when new containers are created with label create mapping.
[docker]
endpoint = "unix:///var/run/docker.sock"
domain = "exampledomain.net"
watch = true
exposedbydefault = false
docker-compose.yml:
version: '3'
services:
traefik:
hostname: traefik
domainname: exampledomain.net
image: traefik:alpine
command: --api --docker
container_name: traefik
networks:
- nginx-proxy
ports:
- "80:80"
- "443:443"
volumes:
- "/var/run/docker.sock:/var/run/docker.sock"
- "./traefik/traefik.toml:/traefik.toml"
- "./traefik/acme.json:/acme.json"
labels:
- "traefik.enable=true"
- "traefik.port=8080"
- "traefik.frontend.rule=Host:monitor.exampledomain.net"
- "traefik.docker.network=nginx-proxy"
networks:
nginx-proxy:
external:
name: nginx-proxy

Answer 1

To see logs in the stdout event if you run docker-compose up -d:
docker-compose logs -f
https://docs.docker.com/compose/reference/logs/
FYI The path ./traefik.log is inside the Traefik container.
[traefikLog]
filePath = "./traefik.log"
With your files (without the section [traefikLog]), I see the logs.
However, your configuration have some issues:
version: '3'
services:
traefik:
hostname: traefik
domainname: exampledomain.net
image: traefik:v1.7.9-alpine
# command: --api --docker # <-- don't define the same configuration with CLI and TOML https://docs.traefik.io/basics/#static-traefik-configuration
container_name: traefik
networks:
- nginx-proxy
ports:
- "80:80"
- "443:443"
volumes:
- "/var/run/docker.sock:/var/run/docker.sock"
- "./traefik/traefik.toml:/traefik.toml"
- "./traefik/acme.json:/acme.json"
labels:
- "traefik.enable=true"
- "traefik.port=8080"
- "traefik.frontend.rule=Host:monitor.exampledomain.net"
- "traefik.docker.network=nginx-proxy"
networks:
nginx-proxy:
external:
name: nginx-proxy
logLevel = "DEBUG"
defaultEntryPoints = ["http","https"]
[api]
# address = ":8080" <- this options doesn't exist. https://docs.traefik.io/v1.7/configuration/api/
# [traefikLog] # <-- remove because not needed
# filePath = "./traefik.log"
# [accessLog] # <-- remove because not needed
# filePath = "./access.log"
[entryPoints]
[entryPoints.http]
address = ":80"
[entryPoints.http.redirect]
entryPoint = "https"
[entryPoints.https]
address = ":443"
[entryPoints.https.tls]
# Let's encrypt setup
[acme]
email = "email#email.com"
storage = "acme.json"
entryPoint = "https"
acmeLogging = true
onHostRule = true
onDemand = false
[acme.httpChallenge]
entryPoint = "http"
[docker]
endpoint = "unix:///var/run/docker.sock"
domain = "exampledomain.net"
# watch = true # <---- useful only for swarm
exposedbydefault = false

Answer 2

Just add [accessLog] to your traefik.toml file and you are fine.

Answer 3

I am sharing a docker-compose file, which will create a volume for both access logs and service logs:
"networks":
"network":
"external":
"name": "appliance"
"services":
"container":
"container_name": "traefik"
"image": "traefik:1.7.4"
"networks":
- "network"
"ports":
- "80:80"
- "443:443"
- "8099:8099"
"restart": "always"
"volumes":
- "/var/run/docker.sock:/var/run/docker.sock"
- "{pwd}/traefik.toml:/traefik.toml"
- "{pwd}/acme.json:/acme.json"
- "logs:/var/log/traefik"
"version": "3.4"
"volumes":
"logs":
"name": "traefik_logs"
Add the log location in traefik.toml as follows:
[accessLog]
filePath = "/var/log/traefik/access.log"