Chef infra 厨师：延迟服务通知

这是我的mongodb食谱：

node.default['mongodb3']['version'] = '3.4.2'
node.default['mongodb3']['repo'] = 'https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.4/x86_64/'

node.default['mongodb3']['config']['mongod']['net']['port'] = 30158
node.default['mongodb3']['config']['mongod']['net']['bindIp'] = 'localhost'
node.default['mongodb3']['config']['mongod']['security']['authorization'] = 'enabled'

include_recipe 'mongodb3::default'

cookbook_file "/tmp/setupUsers.js" do
  source "mongo/setupUsers.js"
  mode 0755
end

execute "Add Mongo Users" do
  command "mongo localhost:30158 /tmp/setupUsers.js"
end

如你所见：

我正在安装mongo 3.4和

我正在尝试执行

mongolocalhost:30158/tmp/setupUsers.js

然而，我从厨师那里得到了以下信息：

==> default:   * execute[Add Mongo Users] action run
==> default:
==> default:     [execute] MongoDB shell version v3.4.2
==> default:               connecting to: localhost:30158
==> default:               2017-03-06T10:56:56.875+0000 W NETWORK  [thread1] Failed to connect to 127.0.0.1:30158, in(checking socket
for error after poll), reason: Connection refused
==> default:               2017-03-06T10:56:56.879+0000 E QUERY    [thread1] Error: couldn't connect to server localhost:30158, connec
tion attempt failed :
==> default:               connect@src/mongo/shell/mongo.js:237:13
==> default:               @(connect):1:6
==> default:               exception: connect failed
==> default:
==> default:     ================================================================================
==> default:     Error executing action `run` on resource 'execute[Add Mongo Users]'
==> default:     ================================================================================
==> default:
==> default:     Mixlib::ShellOut::ShellCommandFailed
==> default:     ------------------------------------
==> default:     Expected process to exit with [0], but received '1'
==> default:     ---- Begin output of mongo localhost:30158 /tmp/setupUsers.js ----
==> default:     STDOUT: MongoDB shell version v3.4.2
==> default:     connecting to: localhost:30158
==> default:     2017-03-06T10:56:56.875+0000 W NETWORK  [thread1] Failed to connect to 127.0.0.1:30158, in(checking socket for error
after poll), reason: Connection refused
==> default:     2017-03-06T10:56:56.879+0000 E QUERY    [thread1] Error: couldn't connect to server localhost:30158, connection attem
pt failed :
==> default:     connect@src/mongo/shell/mongo.js:237:13
==> default:     @(connect):1:6
==> default:     STDERR: exception: connect failed
==> default:     ---- End output of mongo localhost:30158 /tmp/setupUsers.js ----
==> default:     Ran mongo localhost:30158 /tmp/setupUsers.js returned 1
==> default:
==> default:     Resource Declaration:
==> default:     ---------------------
==> default:     # In /var/chef/cache/cookbooks/berk/recipes/security.rb
==> default:
==> default:       6: execute "Add Mongo Users" do
==> default:       7:   command "mongo localhost:30158 /tmp/setupUsers.js"
==> default:       8: end
==> default:
==> default:     Compiled Resource:
==> default:     ------------------
==> default:     # Declared in /var/chef/cache/cookbooks/berk/recipes/security.rb:6:in `from_file'
==> default:
==> default:     execute("Add Mongo Users") do
==> default:       action [:run]
==> default:       retries 0
==> default:       retry_delay 2
==> default:       default_guard_interpreter :execute
==> default:       command "mongo localhost:30158 /tmp/setupUsers.js"
==> default:       backup 5
==> default:       returns 0
==> default:       user nil
==> default:       declared_type :execute
==> default:       cookbook_name "berk"
==> default:       recipe_name "security"
==> default:     end
==> default:
==> default:     Platform:
==> default:     ---------
==> default:     x86_64-linux
==> default:

正如您所看到的，mongod服务似乎还没有运行，但是在输出消息的末尾，chef告诉我正在尝试重新启动延迟的服务通知

==> default: [2017-03-06T10:56:56+00:00] INFO: Running queued delayed notifications before re-raising exception
==> default: [2017-03-06T10:56:56+00:00] INFO: template[/etc/mongod.conf] sending restart action to service[mongod] (delayed)
==> default: Recipe: mongodb3::default
==> default:   * service[mongod] action restart
==> default: [2017-03-06T10:56:57+00:00] INFO: service[mongod] restarted
==> default:
==> default:     - restart service service[mongod]
==> default: [2017-03-06T10:56:57+00:00] INFO: template[/opt/wildfly/standalone/configuration/standalone-full.xml] sending restart act
ion to service[wildfly] (delayed)

为什么在配置结束之前不启动此服务？我需要在mongod服务启动后连接到mongo

我已经看过mongodb3的食谱了。（mongodb3配方的默认配方），服务应立即启动

编辑

我用的是mongodb3配方。mongodb3默认配方：

service 'mongod' do
  case node['platform']
    when 'ubuntu'
      if node['platform_version'].to_f >= 15.04
        provider Chef::Provider::Service::Systemd
      elsif node['platform_version'].to_f >= 14.04
        provider Chef::Provider::Service::Upstart
      end
  end
  supports :start => true, :stop => true, :restart => true, :status => true
  action :enable
  subscribes :restart, "template[#{node['mongodb3']['mongod']['config_file']}]", :delayed
  subscribes :restart, "template[#{node['mongodb3']['config']['mongod']['security']['keyFile']}", :delayed
end

---

在你的食谱中，我看不到

服务[mongod]

，但我想你可能有以下几行：

 service 'mongod' do
   action [:enable, :start]
 end

此时，Chef启动服务，但它可能需要一些时间才能完全运行并响应请求。厨师不再等待，而是继续制作食谱

您可以多次尝试执行[Add Mongo Users]，直到成功，如下所示：

execute "Add Mongo Users" do
  command "mongo localhost:30158 /tmp/setupUsers.js"
  retries 6 #times
  retry_delay 10 #seconds
end

这将使您的服务在厨师失败之前有一分钟的时间开始

重要提示：您还应该为执行[Add Mongo Users]的

设置一些防护措施，否则它将在每次运行时运行

编辑（在您显示
服务[mongod]
资源之后。）

它没有启动操作，这就是它没有启动的原因。因此，添加

service 'mongod' do
  action :start
end

在
执行[添加Mongo用户]
资源之前的某个地方。
谢谢@Draco。我在帖子中添加了
mongodb3食谱
default recipe perfums的代码，以便添加一些细节。我觉得在服务开始之前等待有点难看。在启动过程结束之前，有没有办法订阅？为什么mongod服务启动过程延迟到Chef启动结束？您引用的
服务[mongod]
只有启用操作，因此它只是确保服务在启动时启动，但不会立即启动。注释（在第137行）显然是错误的。那么，为什么要启动mongod呢？我明白了，它创建一个订阅是为了更改
模板[#{no...
。然后重新启动服务。