gitlab ci 错误 could not translate host name "postgres" to address: Name does not resolve

Question

我在我的 rails 应用程序中使用 gitlab-ci，它运行正确到昨天但它没有通过，原因是：

rake aborted!
PG::ConnectionBad: could not translate host name "postgres" to address: Name does not resolve
/usr/local/bundle/gems/pg-1.1.4/lib/pg.rb:56:in `initialize'
/usr/local/bundle/gems/pg-1.1.4/lib/pg.rb:56:in `new'
/usr/local/bundle/gems/pg-1.1.4/lib/pg.rb:56:in `connect'
....
Tasks: TOP => db:schema:load => db:check_protected_environments

.gitlab-ci.yml :

rspec:
  stage: test
  services:
    - postgres:10
  variables:
    DATABASE_URL: "postgresql://postgres:postgres@postgres:5432/$POSTGRES_DB"
    POSTGRES_DB: db_test
    RAILS_ENV: test
  before_script:
    - ruby -v
  script:
    - cp config/application.sample.yml config/application.yml
    - cp config/database.sample.yml config/database.yml
    - bundle exec rake db:schema:load
    - bundle exec rspec spec

似乎找不到 postgres 服务运行或者由于某种原因数据库服务不正确运行，我猜 gitlab-ci 中的一些内部结构已经改变。

Answer 1

postgres 有两个必需的环境变量名称 POSTGRES_USER 和 POSTGRES_PASSWORD 如果您不提供它们容器将不会运行。

gitlab-ci documentation about services

Answer 2

编辑：这是对图像的有意更改，you now must set a password or configure further:

If you know that you want to be insecure (i.e. any one can connect without a password from anywhere), then POSTGRES_HOST_AUTH_METHOD=trust is how you opt in to that.

这似乎是在 docker 图像升级到 new releases 时引入的。

可以拉取10.11的镜像，暂时避免这个问题：

services:
- postgres:10.11

不确定为什么会这样，但自 last docker image update 以来我们正在经历同样的事情。我发现从 12.1 到 12.2 也是如此。

gitlab ci 错误 could not translate host name "postgres" to address: Name does not resolve

gitlab ci error could not translate host name "postgres" to address: Name does not resolve

ruby-on-rails

gitlab-ci

gitlab-ci-runner