Docker Hub is a free account and unauthenticated user, Pull number will be limited from November. If you operate on CircleCI without authentication, IP address-based restrictions will be applied, and CircleCI's IP addresses are not many compared to users, so there are concerns about the impact.
The CircleCI team seems to be talking to Docker, so it may not be necessary for users to respond in the future. However, if the CI / CD environment stops, the impact will be great, so let's hold down the workaround.
If you bite the user authentication of Docker Hub for the time being, it will not be judged by the IP address, so you can use up to
200 pulls / 6h even with a free account. If it becomes more than this, you need to charge Docker Hub, but in any case, you need to authenticate the user on CircleCI, so the same work will occur.
Follow the steps below to authenticate Docker Hub users on CircleCI.
Click here for the entire
The procedure for registering in Context will come out soon, so I will omit it.
staging_steps: &staging_steps <<: *only_master context: - serverless_staging - docker-hub-credencials production_steps: &production_steps <<: *only_master context: - serverless_production - docker-hub-credencials
Docker executor and the authentication information set in the place where Docker is pulled in Machine executor will be added. Below is an example of a Docker executor.
references: docker_hub_authentication: &docker_hub_authentication auth: username: $DOCKERHUB_USER password: $DOCKERHUB_PASSWORD
The following is an example of applying to the parts summarized in ʻexecutors`.
executors: python3_6_1: working_directory: ~/repo docker: - image: circleci/python:3.6.1 <<: *docker_hub_authentication test: working_directory: ~/repo docker: - image: circleci/python:3.6.1 <<: *docker_hub_authentication - image: bluszcz/bflocalstack-dynamodb-s3 <<: *docker_hub_authentication - image: alismedia/dynamodb-local <<: *docker_hub_authentication environment: MAX_HEAP_SIZE: 4096m HEAP_NEWSIZE: 3072m #No credentials required as it is not Docker Hub - image: docker.elastic.co/elasticsearch/elasticsearch:6.2.0 environment: discovery.type: single-node
If you can make the above settings and build the same as before the change, you are done.
If you accidentally add your credentials to a location other than Docker Hub, you will get the following error:
Error response from daemon: Get https://docker.elastic.co/v2/elasticsearch/elasticsearch/manifests/6.2.0: unauthorized: authentication required
The following is a mysterious error. This is the first time I saw it.
Allocating a remote Docker Engine Requesting version: 18.09.3 Got error while creating host: failed to create host: rpc error: code = Unknown desc = failed to create VM: Put "https://vm-service.infra.circleci.com/tasks/5f7ffcbaa7b0aa6a8ec29c79-0-build%2F59C7C9D1": EOF We had an unexpected error preparing a VM for this build, potentially due to our infrastructure or cloud provider. Please retry the build in a few minutes
Rerun as instructed and it was resolved.