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Docker Logs

Here are setup instructions for a variety of Docker platforms including Docker Cloud, ECS, and Rancher.

Overview

Log data can be forwarded from a variety of Docker-based platforms to LogDNA. However, the setup instructions for each platform may be different. LogDNA currently supports logging from Docker, Docker Cloud, ECS, and Rancher.

LogDNA Docker integrations rely on LogSpout, a log router for Docker containers.

Docker

You can do so from the Docker section of the add log source instructions modal available in the LogDNA web app.
Run the following LogSpout command:

Shell

sudo docker run --name="logdna" --restart=always \
-d -v=/var/run/docker.sock:/var/run/docker.sock \
-e LOGDNA_KEY="YOUR-INGESTION-KEY (Required)" \
-e FILTER_NAME="CONTAINER-NAME (Optional)" \
-e FILTER_LABELS="COMMA-SEPARATED-LABELS (Optional)" \
-e HOSTNAME="ALTERNATIVE-HOSTNAME (Optional)" \
-e TAGS="COMMA-SEPARATED-TAGS (Optional)" \
logdna/logspout:latest

Note: if you run into permission issues, try to run it as a root.

Pro tip: You can change the default docker host tag to any string you like, and even use multiple tags by separating them with a comma (,).

Docker Cloud

Append the following to your Docker Cloud stackfile:

YAML

logdna:
  autoredeploy: true
  deployment_strategy: every_node
  environment:
    - LOGDNA_KEY="YOUR-INGESTION-KEY (Required)"
    - FILTER_NAME="CONTAINER-NAME (Optional)"
    - FILTER_LABELS="COMMA-SEPARATED-LABELS (Optional)"
    - HOSTNAME="ALTERNATIVE-HOSTNAME (Optional)"
    - TAGS="COMMA-SEPARATED-TAGS (Optional)"
  image: 'logdna/logspout:latest'
  restart: always
  volumes:
    - '/var/run/docker.sock:/var/run/docker.sock'

Note: if you run into permission issues, try to run it as a root.

Pro tip: You can change the default docker host tag to any string you like, and even use multiple tags by separating them with a comma (,).

Elastic Container Service (ECS)

Append the following to your ECS cloud configuration:

YAML

services:
  logspout:
    environment:
        - LOGDNA_KEY="YOUR-INGESTION-KEY (Required)"
        - FILTER_NAME="CONTAINER-NAME (Optional)"
        - FILTER_LABELS="COMMA-SEPARATED-LABELS (Optional)"
        - HOSTNAME="ALTERNATIVE-HOSTNAME (Optional)"
        - TAGS="COMMA-SEPARATED-TAGS (Optional)"
    image: logdna/logspout:latest
    restart: always
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    deploy:
      mode: global

Note: if you run into permission issues, try to run it as a root.

Pro tip: You can change the default docker host tag to any string you like, and even use multiple tags by separating them with a comma (,).

Rancher

Create a LogDNA stack from the Rancher compose file below.

YAML

version: '2'
services:
  logdna:
    image: logdna/logspout:latest
    environment:
      LOGDNA_KEY="YOUR-INGESTION-KEY (Required)"
      FILTER_NAME="CONTAINER-NAME (Optional)"
      FILTER_LABELS="COMMA-SEPARATED-LABELS (Optional)"
      HOSTNAME="ALTERNATIVE-HOSTNAME (Optional)"
      TAGS="COMMA-SEPARATED-TAGS (Optional)"
    restart: always
    labels:
      io.rancher.container.hostname_override: container_name
      io.rancher.container.pull_image: always
      io.rancher.os.scope: system
    volumes:
    - /var/run/docker.sock:/tmp/docker.sock

Note: if you run into permission issues, try to run it as a root.

Pro tip: You can change the default docker host tag to any string you like, and even use multiple tags by separating them with a comma (,).

Docker Swarm

Append the following to your Docker Swarm compose file:

YAML

version: '3'
networks:
- logging:
    services:
      logdna:
        image: logdna/logspout:latest
        volumes:
        - /var/run/docker.sock:/var/run/docker.sock
        environment:
        - LOGDNA_KEY="YOUR-INGESTION-KEY (Required)"
        - FILTER_NAME="CONTAINER-NAME (Optional)"
        - FILTER_LABELS="COMMA-SEPARATED-LABELS (Optional)"
        - HOSTNAME="ALTERNATIVE-HOSTNAME (Optional)"
        - TAGS="COMMA-SEPARATED-TAGS (Optional)"

Note: if you run into permission issues, try running this as root by inserting user: root under the logdna service object.

Pro tip: You can change the default docker host tag to any string you like, and even use multiple tags by separating them with a comma (,).

Updated about a year ago