docker - Elasticsearch在CircleCI上尚未准备好

Question

当我运行CircleCI时，由于Elasticsearch尚未完全设置，前几项测试失败。

通常我会使用dockerize库来等待Elasticsearch完成，但是这似乎无法检测到Elasticsearch。有什么想法吗？ dockerize命令只是超时。但是，Elasticsearch容器似乎正在运行，因为如果我不等待，最终Elasticsearch将开始使用测试。

这是我的 docker 文件

version: 2
jobs:
  build:
    parallelism: 3
    working_directory: ~/export-opportunities
    docker:
      - image: circleci/ruby:2.5.5-node
        environment:
          BUNDLE_JOBS: 3
          BUNDLE_RETRY: 3
          BUNDLE_PATH: vendor/bundle
          PGHOST: localhost
          PGUSER: user
          RAILS_ENV: test
      - image: circleci/postgres:latest
        environment:
          POSTGRES_USER: user
          POSTGRES_DB:  circle_test
          POSTGRES_PASSWORD: $POSTGRES_PASSWORD
      - image: circleci/redis:4.0.9
        environment:
          REDIS_URL: "redis://localhost:6379/"
      - image: docker.elastic.co/elasticsearch/elasticsearch:6.3.2
        environment:
          cluster.name: elasticsearch
          xpack.security.enabled: false
          transport.host: localhost
          network.host: 127.0.0.1
          http.port: 9200
          discovery.type: single-node
    branches:
      only: chore/XOT-597-circleci
    steps:
      - checkout # check out the code in the project directory
      # restore bundle cache  
      - restore_cache:
          keys:
            - exops-{{ checksum "Gemfile.lock" }}

      - run:
          name: Bundle Install
          command: bundle check || bundle install

      # store bundle cache
      - save_cache:
          key: exops-{{ checksum "Gemfile.lock" }}
          paths: 
            - vendor/bundle

      # Database setup
      - run:
          name: install dockerize
          command: wget https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VERSION/dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz && sudo tar -C /usr/local/bin -xzvf dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz && rm dockerize-linux-amd64-$DOCKERIZE_VERSION.tar.gz
          environment:
            DOCKERIZE_VERSION: v0.3.0

      - run:
          name: Wait for DB
          command: dockerize -wait tcp://localhost:5432 -timeout 1m

      - run:
          name: Database setup
          command: |
            bundle exec rake db:create
            bundle exec rake db:migrate

      # Redis setup
      - run:
          name: Wait for Redis
          command: dockerize -wait tcp://localhost:6379 -timeout 1m
      # DOES NOT WORK:
      - run:
          name: Wait for Elasticsearch
          command: dockerize -wait http://localhost:9200 -timeout 2m

      # Run rspec in parallel 
      - run: |
          echo Running test ...
          bundle exec rspec --profile 10 \
                      --format RspecJunitFormatter \
                      --out test_results/rspec.xml \
                      --format progress \
                      $(circleci tests glob "spec/**/*_spec.rb" | circleci tests split --split-by=timings)

      # Save test results for timing analysis
      - store_test_results:
          path: test_results 

注意，我也尝试了 dockerize -wait tcp://localhost:9200 -timeout 2m， dockerize -wait http://127.0.0.1:9200 -timeout 2m和 dockerize -wait tcp://127.0.0.1:9200 -timeout 2m无效。

Answer 1

我尝试添加sleep 10和sleep 100，但是问题仍然存在。

问题是在创建索引之前测试已经在运行。索引创建是由运行的第一个测试触发的，但是花费了几秒钟，因此前几个测试始终失败。

我的解决方案是添加以下代码，以触发在启动Rails环境时运行的rails_helper.rb中建立索引(如果不存在)。对于大多数其他环境，索引确实存在，因此不会降低其他进程的速度。

# Build initial indices if not present, e.g. CircleCI
  [Opportunity, Subscription].each do |model|
    unless model.__elasticsearch__.index_exists? index: model.__elasticsearch__.index_name
      model.__elasticsearch__.create_index!(force: true)
      sleep 2
    end
  end