Monitor Hub

Security Notice

This container is not intended to be exposed to the internet. It is intended to be used on a local network. If you expose this container to the internet, you do so at your own risk. You will need to expose /var/run/docker.sock to the container in order for it to run properly, and in doing so you are giving this container the ability to control docker, as well as for a malicious user to exploit any known/unknown vulnerabilities in docker or the web front end to potentially gain access to your host.

All of that said, this container does NOT do do anything with docker.sock other than read logs from it. It will not attempt to control docker in any way. Additionally, if the container cannot be accessed outside of your local network (ie, you are not doing port forwarding on your router), then the risk is significantly reduced to basically zero.

Overview

Monitor Hub is a simple docker container that enables you to view logs from all of the running docker services. It was created to make it easier for users of the SDR-E (and probably any docker user) to view the logs of all of the running services in one place without SSH-ing in to the box and running docker logs on each container.

Usage / Getting Started

  monitor-hub:
    image: ghcr.io/sdr-enthusiasts/monitor-hub:latest
    container_name: monitor-hub
    restart: always
    ports:
      - 80:80
    environment:
      - TZ=${FEEDER_TZ}
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    tmpfs:
      - /run:exec,size=64M
      - /var/log
      - /tmp

Likely you will need to amend the port line if port 80 is in use on your host or in docker.

Limitations and Future Improvements

If you have a large stack of containers, OR you have containers that contain a significant number of log entries, the page will not be available until all log entries are processed. This may take a minute or two to accomplish

Currently, the container will show up to 100 lines of logs (50 on page load) from each container. This is done to save infinite scrolling and bandwidth. This will be improved by adding a "load more" (or simililar idea) button in the future.

The webpage is a bit basic. While this entire project doesn't need much complication, it's a bit basic for my liking.

The webpage is unusable on mobile. This will be improved in future versions.

The page does not auto-scroll to the bottom. This will be improved in future versions.

If a container SHOULD be running, but it is not, the webpage will not show it. This will be improved in future versions.

Healthcheck status is not shown. This will be improved in future versions.

A potential future improvement would be to add a search bar to filter the containers shown or log entries.

Another potential future improvement would be to clean up log entries by removing the container-added time stamp and using the docker daemon one. If you see two time stamps, it's because of this.

A last future potential improvement would be to enable some level of container management, ie pulling new images, stopping/restarting, etc.