Docker

This module allows CrowdSec to acquire logs from running containers, in one-shot and streaming mode.

Configuration example

To monitor a given container name or ID:

source: docker
container_name:
 - my_container_name
container_id:
 - 843ee92d231b
labels:
  type: log_type

To monitor containers name or ID matching a regex:

source: docker
container_name_regexp:
 - my_containers_*
container_id_regexp:
 - i-*
labels:
  type: log_type

Look at the configuration parameters to view all supported options.

Parameters

container_name

List of containers names to monitor.

container_id

List of containers IDs to monitor.

container_name_regexp

List of regexp matching containers names to monitor.

container_id_regexp

List of regexp matching containers ID to monitor.

docker_host

Docker host.

Default: unix:///var/run/docker.sock

until

Read logs until timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes).

since

Read logs since timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes).

check_interval

Relative interval (e.g. 5s for 5 seconds) to check for new containers matching the configuration.

Default: 1s

follow_stdout

Follow stdout containers logs.

Default: true

follow_stderr

Follow stderr container logs.

Default: true

DSN and command-line

docker datasource implements a very approximative DSN, as follows : docker://<docker_name_or_id>?[args]

Supported args are :

• log_level : set log level of module
• until : read logs until timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes)
• since : read logs since timestamp (e.g. 2013-01-02T13:23:37Z) or relative (e.g. 42m for 42 minutes)
• docker_host : docker host, can be a remote docker host or a path to another container socket
• follow_stderr: follow stderr container logs
• follow_stdout : follow stdout container logs

A 'pseudo DSN' must be provided:

crowdsec -type nginx -dsn 'docker://my_nginx_container_name' 

You can specify the log_level parameter to change the log level for the acquisition :

crowdsec -type nginx -dsn 'docker://my_nginx_container_name?log_level=debug' 

Notes

Containers watching

This module will automatically read the logs of containers specified in the configuration, even if they have been started after crowdsec start.

Reading podman containers

note

Don't forget to start podman service with sudo systemctl start podman.

Run your podman containers as root, else CrowdSec will not be able to read the logs.

If you want to read Podman containers logs, you can set the docker_host to unix:///run/podman/podman.sock or to the path of your Podman socket.

Configuration file

source: docker
container_name_regexp:
 - my_containers_*
container_id_regexp:
 - i-*
labels:
  type: log_type
docker_host: unix:///var/run/podman/podman.sock

Command line

crowdsec -type nginx -dsn 'docker://my_nginx_container_name?docker_host=unix:///run/podman/podman.sock&log_level=debug'