GitLab CI runner - 无法访问其他存储库答案

【问题标题】：GitLab CI runner - can't access other repositoryGitLab CI runner - 无法访问其他存储库
【发布时间】：2016-08-02 23:19:00
【问题描述】：

在最近的 8.x 小升级后，我无法执行 GitLab CI 测试，这些测试也会获取另一个存储库。虽然之前一切正常，但现在我收到了著名的 Host key verification failed. 来自 ssh 的错误消息。这可能是什么原因？

/etc/gitlab-runner/config.toml:

concurrent = 1

[[runners]]
  name = "python-runner@localhost"
  # ...
  executor = "docker"
  [runners.docker]
    image = "edoburu/python-runner"
    privileged = false
    cap_drop = ["DAC_OVERRIDE"]
    volumes = [
        "/cache",
        "/home/deploy/.ssh:/root/.ssh:ro"
    ]
    # ...

如您所见，.ssh 文件夹已公开，为容器提供了所有已知主机的列表 (/home/deploy/.ssh/known_hosts)。这也为容器提供了一个已知的 SSH 密钥，我已将其作为存储库中的部署密钥启用。

但是，现在构建失败了，这是以前没有的：

Obtaining python-extra from git+git@git.example.org:myproject/python-repo.git@889f8fa0fe485d246d106ccee47aa60b2dd2523e#egg=python-extra (from -r src/requirements.txt (line 63))
  Cloning git@git.example.org:myproject/python-extra.git (to 889f8fa0fe485d246d106ccee47aa60b2dd2523e) to /builds/myproject/env/src/python-extra
Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
Command "git clone -q git@git.example.org:myproject/python-extra.git /builds/project/env/src/python-extra" failed with error code 128 in None

.gitlab-ci.yml 文件包含：

test:
  image: edoburu/python-runner:base
  stage: test
  script:
  - virtualenv --no-site-packages ../env
  - source ../env/bin/activate
  - pip install --exists-action=w -r src/requirements.txt
  - pip install coverage
  - coverage run --source=src --omit='*/migrations/*' ./src/runtests.py -v2
  - coverage report -m

当我手动进入容器时，一切正常：

root@git.example.org ~ $ docker run -it --volume="/home/deploy/.ssh:/root/.ssh:ro" edoburu/python-runner:base /bin/bash
root@feed357355ad:/# ssh git@git.example.org
PTY allocation request failed on channel 0
Welcome to GitLab, Anonymous!
Connection to git.example.org closed.
root@feed357355ad:/# git clone git@git.example.org:myproject/python-extra.git  
Cloning into 'python-extra'...
remote: Counting objects: 387, done.
remote: Compressing objects: 100% (176/176), done.
remote: Total 387 (delta 215), reused 374 (delta 208)
Receiving objects: 100% (387/387), 5.97 MiB | 0 bytes/s, done.
Resolving deltas: 100% (215/215), done.
Checking connectivity... done.
root@feed357355ad:/# exit
root@git.example.org ~ $

GitLab 有什么不同之处吗？也许分配 IP 地址或其他导致我的构建失败的东西？

【问题讨论】：

标签： docker gitlab gitlab-ci gitlab-ci-runner gitlab-8

【解决方案1】：

已解决，原来--cap-drop=DAC_OVERRIDE 阻止访问该卷。将其所有者更改为 root 解决了它。

通过在.gitlab-ci.yml文件中添加一些调试代码找到：

 script:
  - ping -c 1 git.edoburu.nl
  - ssh-keyscan git.edoburu.nl
  - ls -la ~/.ssh/
  - cat ~/.ssh/known_hosts

【讨论】：