docker-compose pull results in x509: certificate signed by unknown authority

Question

I\'m hitting the following error when trying to pull the elastcisearch images from dockerhub.

docker-compose pull
Pulling elasticsearch (elasticsearch:2.2.0)...
         


        

Answer 1

this might happen on local or user registries that might not have root CA signed certificates (these might be self singed). You can use the following steps use these registries:

1. sudo systemctl edit docker.service

2. add the registry like this:

[Service]
ExecStart=
ExecStart=/usr/bin/dockerd  --insecure-registry  

3. Save the file.
4. Reload the configuration with sudo systemctl daemon-reload
5. Restart Docker with sudo systemctl restart docker.service