Frequently asked questions
How to update CVAT
Before updating, please follow the backup guide and backup all CVAT volumes.
To update CVAT, you should clone or download the new version of CVAT and rebuild the CVAT docker images as usual.
and run containers:
docker-compose up -d
Sometimes the update process takes a lot of time due to changes in the database schema and data.
You can check the current status with
docker logs cvat.
Please do not terminate the migration and wait till the process is complete.
Kibana app works, but no logs are displayed
Make sure there aren’t error messages from Elasticsearch:
docker logs cvat_elasticsearch
If you see errors like this:
lood stage disk watermark [95%] exceeded on [uMg9WI30QIOJxxJNDiIPgQ][uMg9WI3][/usr/share/elasticsearch/data/nodes/0] free: 116.5gb[4%], all indices on this node will be marked read-only
You should free up disk space or change the threshold, to do so check: Elasticsearch documentation.
How to change default CVAT hostname or port
To change the hostname, simply set the
CVAT_HOST environemnt variable
If you want to change the port, change the
entryPoints.web.address part of
traefik image command in
services: traefik: command: - "--providers.docker.exposedByDefault=false" - "--providers.docker.network=test" - "--entryPoints.web.address=:<YOUR_PORT>"
Note that changing the port does not make sense if you are using HTTPS - port 443 is conventionally used for HTTPS connections, and is needed for Let’s Encrypt TLS challenge.
How to configure connected share folder on Windows
Follow the Docker manual and configure the directory that you want to use as a shared directory:
After that, it should be possible to use this directory as a CVAT share:
version: '3.3' services: cvat: volumes: - cvat_share:/home/django/share:ro volumes: cvat_share: driver_opts: type: none device: /d/my_cvat_share o: bind
How to make unassigned tasks not visible to all users
Where are uploaded images/videos stored
The uploaded data is stored in the
cvat_data docker volume:
volumes: - cvat_data:/home/django/data
Where are annotations stored
Annotations are stored in the PostgreSQL database. The database files are stored in the
cvat_db docker volume:
volumes: - cvat_db:/var/lib/postgresql/data
How to mark job/task as completed
The status is set by the user in the Info window of the job annotation view. There are three types of status: annotation, validation or completed. The status of the job changes the progress bar of the task.
How to install CVAT on Windows 10 Home
Follow this guide.
I do not have the Analytics tab on the header section. How can I add analytics
You should build CVAT images with ‘Analytics’ component.
How to upload annotations to an entire task from UI when there are multiple jobs in the task
You can upload annotation for a multi-job task from the Dasboard view or the Task view. Uploading of annotation from the Annotation view only affects the current job.
How to specify multiple hostnames
To do this, you will need to edit
traefik.http.<router>.cvat.rule docker label for both the
cvat_ui services, like so
(see the documentation on Traefik rules for more details):
cvat: labels: - traefik.http.routers.cvat.rule=(Host(`example1.com`) || Host(`example2.com`)) && PathPrefix(`/api/`, `/git/`, `/opencv/`, `/analytics/`, `/static/`, `/admin`, `/documentation/`, `/django-rq`) cvat_ui: labels: - traefik.http.routers.cvat-ui.rule=Host(`example1.com`) || Host(`example2.com`)
How to create a task with multiple jobs
Set the segment size when you create a new task, this option is available in the Advanced configuration section.
How to transfer CVAT to another machine
Follow the backup/restore guide.