无法使用 Chef 中的部署资源部署 git 存储库

Question

我很难使用 Chef 进行简单的 git 回购部署。

这是我的食谱：

deploy "tomatina" do
  repo "git://github.com/visionmedia/express.git"
  deploy_to '/tmp/selvam'
  action :deploy
end

当我在节点上运行 chef-client 时，它出错并显示文件未找到异常。我不确定错误是什么。我是 chef & ruby 的新手，不知道从哪里开始查看以跟踪错误。这是我的日志：

Starting Chef Client, version 12.9.41
resolving cookbooks for run list: ["myapp"]
Synchronizing Cookbooks:
  - application_nodejs (2.0.1)
  - build-essential (6.0.0)
  - nodejs (1.3.0)
  - apt (3.0.0)
  - myapp (0.1.0)
  - compat_resource (12.10.6)
  - application (4.1.4)
Installing Cookbook Gems:
Compiling Cookbooks...
[2016-06-15T12:22:37+00:00] WARN: Chef::Provider::AptRepository already exists!  Cannot create deprecation class for LWRP provider apt_repository from cookbook apt
[2016-06-15T12:22:37+00:00] WARN: AptRepository already exists!  Deprecation class overwrites Custom resource apt_repository from cookbook apt
Converging 1 resources
Recipe: myapp::default
  * deploy[tomatina] action deploy
    - create new directory /tmp/selvam/shared
    - clone from git://github.com/visionmedia/express.git into /tmp/selvam/shared/cached-copy
    - checkout ref 31dd549f350accd7b4e3685c13f745e857557827 branch HEAD
  - force ownership of /tmp/selvam to :
  - deploy from repo to /tmp/selvam/releases 
  - force ownership of /tmp/selvam to :
  - evaluate block and run any associated actions
  ================================================================================
  Error executing action `deploy` on resource 'deploy[tomatina]'
  ================================================================================

  Chef::Exceptions::FileNotFound
  ------------------------------
  Cannot symlink /tmp/selvam/shared/config/database.yml to /tmp/selvam/releases/20160615122237/config/database.yml before migrate: No such file or directory @ sys_fail2 - (/tmp/selvam/shared/config/database.yml, /tmp/selvam/releases/20160615122237/config/database.yml)

  Cookbook Trace:
  ---------------
  /var/chef/cache/cookbooks/compat_resource/files/lib/chef_compat/monkeypatches/chef/runner.rb:41:in `run_action'

  Resource Declaration:
  ---------------------
  # In /var/chef/cache/cookbooks/myapp/recipes/default.rb

    9: deploy "tomatina" do
   10:   repo 'git://github.com/visionmedia/express.git'
   11:   deploy_to '/tmp/selvam'
   12:   action :deploy
   13: end

  Compiled Resource:
  ------------------
  # Declared in /var/chef/cache/cookbooks/myapp/recipes/default.rb:9:in `from_file'

  deploy("tomatina") do
    action [:deploy]
    updated true
    updated_by_last_action true
    retries 0
    retry_delay 2
    default_guard_interpreter :default
    deploy_to "/tmp/selvam"
    repository_cache "cached-copy"
    purge_before_symlink ["log", "tmp/pids", "public/system"]
    create_dirs_before_symlink ["tmp", "public", "config"]
    symlink_before_migrate {"config/database.yml"=>"config/database.yml"}
    symlinks {"system"=>"public/system", "pids"=>"tmp/pids", "log"=>"log"}
    revision "HEAD"
    remote "origin"
    scm_provider Chef::Provider::Git
    keep_releases 5
    enable_checkout true
    checkout_branch "deploy"
    declared_type :deploy
    cookbook_name "myapp"
    recipe_name "default"
    repo "git://github.com/visionmedia/express.git"
    shared_path "/tmp/selvam/shared"
    destination "/tmp/selvam/shared/cached-copy"
    current_path "/tmp/selvam/current"
  end

  Platform:
  ---------
  x86_64-linux


Running handlers:
[2016-06-15T12:23:04+00:00] ERROR: Running exception handlers
Running handlers complete
[2016-06-15T12:23:04+00:00] ERROR: Exception handlers complete
Chef Client failed. 1 resources updated in 28 seconds
[2016-06-15T12:23:04+00:00] FATAL: Stacktrace dumped to /var/chef/cache/chef-stacktrace.out
[2016-06-15T12:23:04+00:00] FATAL: Please provide the contents of the stacktrace.out file if you file a bug report
[2016-06-15T12:23:04+00:00] ERROR: deploy[tomatina] (myapp::default line 9) had an error: Chef::Exceptions::FileNotFound: Cannot symlink /tmp/selvam/shared/config/database.yml to /tmp/selvam/releases/20160615122237/config/database.yml before migrate: No such file or directory @ sys_fail2 - (/tmp/selvam/shared/config/database.yml, /tmp/selvam/releases/20160615122237/config/database.yml)
[2016-06-15T12:23:04+00:00] FATAL: Chef::Exceptions::ChildConvergeError: Chef run process exited unsuccessfully (exit code 1)

我的工作站、Chefserver 和节点是运行ning ubuntu 16.04.

厨师详情：

Chef 开发套件版本：0.13.21

主厨客户端版本：12.9.41

伯克斯版本：4.3.2

厨房版本：1.7.3

大厨：12.9.41

Answer 1

错误很明显（重点是我的）：

Cannot symlink /tmp/selvam/shared/config/database.yml to /tmp/selvam/releases/20160615122237/config/database.yml before migrate: No such file or directory @ sys_fail2 - (/tmp/selvam/shared/config/database.yml, /tmp/selvam/releases/20160615122237/config/database.yml)

您的存储库中没有 database.yml，因此部署资源无法为其创建 link。

部署资源中有一堆 callbacks，它在幕后做了很多事情。

让你头疼的是默认为 {"config/database.yml" => "config/database.yml"}

的 symlink_before_migrate

并且如部署资源属性中所述documentation：

Set to symlink_before_migrate({}) to prevent the creation of symbolic links.

因此您的资源应该如下所示：

deploy "tomatina" do
  repo "git://github.com/visionmedia/express.git"
  deploy_to '/tmp/selvam'
  symlink_before_migrate({})
  action :deploy
end

但我强烈建议您先阅读部署资源的整个文档，了解它是如何工作的。

Answer 2

部署资源是一个非常小众的工具，可能不应该再使用了。您可能想要一个普通的 git 资源。

无法使用 Chef 中的部署资源部署 git 存储库

not able to deploy a git repo using deploy resource in chef

chef-infra

chef-recipe