How to Install Dozzle Real-Time Log Viewer for Docker Containers on Ubuntu 22.04

Dozzle is a simple, lightweight, and real-time log viewer application. It allows you to monitor docker container logs via a web-based interface. It provides intelligent search functionality to search logs using regex. It allows you to split screen for viewing multiple logs and download it to your local system.

In this post, we will show you how to install Dozzle log viewer on Ubuntu 22.04.

Prerequisites

  • A server running Ubuntu 22.04.
  • A root password is configured on the server.

Install Docker Engine

First, install all the required dependencies using the following command:

apt install ca-certificates curl gnupg lsb-release -y

Next, add the Docker GPG key and repository with the following command:

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor > /etc/apt/trusted.gpg.d/docker-archive-keyring.gpg
echo "deb [arch=$(dpkg --print-architecture)] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" > /etc/apt/sources.list.d/docker.list

Next, update the repository and install the Docker Engine with the following command:

apt update -y
apt install docker-ce docker-ce-cli containerd.io -y

Once the installation is finished, verify the Docker version with the following command:

docker --version

You should see the following output:

Docker version 20.10.18, build b40c2f6

Launch Dozzle Container

You can download and launch the Dozzle Docker container with the following command:

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

You will get the following output:

Unable to find image 'amir20/dozzle:latest' locally
latest: Pulling from amir20/dozzle
d1cdc3d3f75b: Pull complete 
9208c7e48f51: Pull complete 
Digest: sha256:6c60292275a512749e4429ee82acfa473ae64e9692ddaa440110bf8cdcba1b9f
Status: Downloaded newer image for amir20/dozzle:latest
c23860a90ab760ca3102be73f50404ab61edf1e868078991b4533b5f09d1cd98

You can verify the downloaded image with the following command:

docker images

You will get the following output:

REPOSITORY            TAG       IMAGE ID       CREATED        SIZE
amir20/dozzle         latest    8ecfe772f6ef   3 days ago     10MB

To check the Dozzle container, run the following command:

docker ps

You will get the following output:

CONTAINER ID   IMAGE                  COMMAND                  CREATED          STATUS                    PORTS                                       NAMES
c23860a90ab7   amir20/dozzle:latest   "/dozzle"                47 seconds ago   Up 46 seconds             0.0.0.0:8888->8080/tcp, :::8888->8080/tcp   dozzle

At this point, the Dozzle container is started and listens on port 8888. You can check it with the following command:

ss -altnp

You should see the following output:

LISTEN      0           4096                   0.0.0.0:8888                 0.0.0.0:*          users:(("docker-proxy",pid=51708,fd=4))        
LISTEN      0           4096                      [::]:8888                    [::]:*          users:(("docker-proxy",pid=51714,fd=4))

Access Dozzle Log Viewer

Now, open your web browser and access the Dozzle web interface using the URL http://your-server-ip:8888. You should see the Dozzle web interface on the following screen:

Dozzle Logviewer

Click on the container in the left pane. You should see the container log in the following screen:

Dozzle log

Conclusion

Congratulations! you have successfully installed Dozzle with Docker on Ubuntu 22.04. You can now monitor all your container logs via a web browser. Feel free to ask me if you have any questions.

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