Dozzle is a real-time log viewer for Docker. It's free. It's small. And it's in your browser.

While dozzle should work for most, it is not meant to be a full logging solution. For enterprise use, I recommend you look at Loggly, Papertrail or Kibana.

But if you don't want to pay for these services, then Dozzle can help! Dozzle will be able to capture all logs from your containers and send them in real-time to your browser. Installation is also very easy. Dozzle is not a database. It does not store or save any logs. You can only see live logs while using Dozzle.

Dozzle is a very small Docker container (4 MB compressed). Pull the latest release from the index:

$ docker pull amir20/dozzle:latest

The simplest way to use dozzle is to run the docker container. Also, mount the Docker Unix socket with --volume to /var/run/docker.sock:

$ docker run --name dozzle -d --volume=/var/run/docker.sock:/var/run/docker.sock -p 8888:8080 amir20/dozzle:latest

dozzle will be available at http://localhost:8888/. You can change -p 8888:8080 to any port. For example, if you want to view dozzle over port 4040 then you would do -p 4040:8080.

docker service create \
--name=dozzle \
--publish=8888:8080 \
--constraint=node.role==manager \
--mount=type=bind,src=/var/run/docker.sock,dst=/var/run/docker.sock \
amir20/dozzle:latest

version: "3"
services:
  dozzle:
    container_name: dozzle
    image: amir20/dozzle:latest
    environment:
      - DOZZLE_TAILSIZE=100
      - DOZZLE_FILTER=status=running
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    ports:
      - 9999:8080

dozzle doesn't support authentication out of the box. You can control the device dozzle binds to by passing --addr parameter. For example,

$ docker run --volume=/var/run/docker.sock:/var/run/docker.sock -p 8888:1224 amir20/dozzle:latest --addr localhost:1224

will bind to localhost on port 1224. You can then use a reverse proxy to control who can see dozzle.

If you wish to restrict the containers shown you can pass the --filter parameter. For example,

$ docker run --volume=/var/run/docker.sock:/var/run/docker.sock -p 8888:1224 amir20/dozzle:latest --filter name=foo

this would then only allow you to view containers with a name starting with "foo". You can use other filters like status as well, please check the official docker command line docs for available filters.

dozzle by default mounts to "/". If you want to control the base path you can use the --base option. For example, if you want to mount at "/foobar", then you can override by using --base /foobar. See env variables below for using DOZZLE_BASE to change this.

$ docker run --volume=/var/run/docker.sock:/var/run/docker.sock -p 8080:8080 amir20/dozzle:latest --base /foobar

dozzle will be available at http://localhost:8080/foobar/.

Dozzle follows the 12-factor model. Configurations can use the CLI flags or enviroment variables. The table below outlines all supported options and their respective env vars.

MIT

To Build and test locally:

1. Install NodeJs.
2. Install Go.
3. Globally install packr utility with go get -u github.com/gobuffalo/packr/packr outside of dozzle directory.
4. Install reflex with get -u github.com/cespare/reflex outside of dozzle.
5. Install node modules with npm install.
6. Do npm start

Instructions for Github actions can be found here which build and tests Dozzle.