Class Puppet：通过类传递参数_Class_Variables_Parameter Passing_Puppet_Parameterized

Class Puppet：通过类传递参数

class variables puppet

Class Puppet：通过类传递参数,class,variables,parameter-passing,puppet,parameterized,Class,Variables,Parameter Passing,Puppet,Parameterized,这是我先前关于的问题的后续。在这个示例的后面，我希望能够将running或stopped传递到服务中，但是当我将服务添加到一个框中时，我不使用“include poodle:：service”，而是使用“include poodle”，它完成poodle需要安装的所有其他内容那么，我可以像这样将变量传递给服务类吗： # SITE.PP node 'tweedle.example.com' { include basicstuff include poodle } node 'b

这是我先前关于的问题的后续。在这个示例的后面，我希望能够将running或stopped传递到服务中，但是当我将服务添加到一个框中时，我不使用“include poodle:：service”，而是使用“include poodle”，它完成poodle需要安装的所有其他内容

那么，我可以像这样将变量传递给服务类吗：

# SITE.PP
node 'tweedle.example.com' {
    include basicstuff
    include poodle
}
node 'beetle.example.com' {
    include basicstuff
    class { 'poodle':
        $ensure => 'stopped'
    }
}

## POODLE MODULE, manifests/init.pp
class poodle ( $ensure = 'running' ) {
    class {'poodle::install': }
    class {'poodle::config': }
    class {'poodle::service': 
        ensure => $ensure
    }
    Class ['poodle::install'] -> Class ['poodle::config'] ~> Class ['poodle::service']
}

...

class poodle::service ( $ensure ) {
    service {'poodle':
        ensure     => $ensure,
        enable     => true,
        restart    => "/etc/init.d/poodle stop && sleep 5 && /etc/init.d/poodle start",
        subscribe  => File['/opt/poodle/poodle.py'],
    }
}

# SITE.PP
node 'tweedle.example.com' {
    include basicstuff
    include poodle
}
node 'beetle.example.com' {
    include basicstuff
    include poodle
    class { 'poodle::service':
        $ensure => 'stopped'
    }
}

## POODLE MODULE, manifests/init.pp
class poodle {
    class {'poodle::install': }
    class {'poodle::config': }
    class {'poodle::service': 
        ensure => $ensure
    }
    Class ['poodle::install'] -> Class ['poodle::config'] ~> Class ['poodle::service']
}

...

class poodle::service ( $ensure = 'running') {
    service {'poodle':
        ensure     => $ensure,
        enable     => true,
        restart    => "/etc/init.d/poodle stop && sleep 5 && /etc/init.d/poodle start",
        subscribe  => File['/opt/poodle/poodle.py'],
    }
}

# SITE.PP
node 'tweedle.example.com' {
    include basicstuff
    include poodle
}
node 'beetle.example.com' {
    include basicstuff
    class { 'poodle::service':
        $ensure => 'stopped'
    }
}

## POODLE MODULE, manifests/init.pp
class poodle {
    class {'poodle::install': }
    class {'poodle::config': }
    class {'poodle::service': 
        ensure => $ensure
    }
    Class ['poodle::install'] -> Class ['poodle::config'] ~> Class ['poodle::service']
}

...

class poodle::service ( $ensure = 'running') {
    service {'poodle':
        ensure     => $ensure,
        enable     => true,
        restart    => "/etc/init.d/poodle stop && sleep 5 && /etc/init.d/poodle start",
        subscribe  => File['/opt/poodle/poodle.py'],
    }
}

或者我应该直接将参数放在服务类上，并显式调用Poodle类和Poodle的服务类，如下所示：

# SITE.PP
node 'tweedle.example.com' {
    include basicstuff
    include poodle
}
node 'beetle.example.com' {
    include basicstuff
    class { 'poodle':
        $ensure => 'stopped'
    }
}

## POODLE MODULE, manifests/init.pp
class poodle ( $ensure = 'running' ) {
    class {'poodle::install': }
    class {'poodle::config': }
    class {'poodle::service': 
        ensure => $ensure
    }
    Class ['poodle::install'] -> Class ['poodle::config'] ~> Class ['poodle::service']
}

...

class poodle::service ( $ensure ) {
    service {'poodle':
        ensure     => $ensure,
        enable     => true,
        restart    => "/etc/init.d/poodle stop && sleep 5 && /etc/init.d/poodle start",
        subscribe  => File['/opt/poodle/poodle.py'],
    }
}

# SITE.PP
node 'tweedle.example.com' {
    include basicstuff
    include poodle
}
node 'beetle.example.com' {
    include basicstuff
    include poodle
    class { 'poodle::service':
        $ensure => 'stopped'
    }
}

## POODLE MODULE, manifests/init.pp
class poodle {
    class {'poodle::install': }
    class {'poodle::config': }
    class {'poodle::service': 
        ensure => $ensure
    }
    Class ['poodle::install'] -> Class ['poodle::config'] ~> Class ['poodle::service']
}

...

class poodle::service ( $ensure = 'running') {
    service {'poodle':
        ensure     => $ensure,
        enable     => true,
        restart    => "/etc/init.d/poodle stop && sleep 5 && /etc/init.d/poodle start",
        subscribe  => File['/opt/poodle/poodle.py'],
    }
}

# SITE.PP
node 'tweedle.example.com' {
    include basicstuff
    include poodle
}
node 'beetle.example.com' {
    include basicstuff
    class { 'poodle::service':
        $ensure => 'stopped'
    }
}

## POODLE MODULE, manifests/init.pp
class poodle {
    class {'poodle::install': }
    class {'poodle::config': }
    class {'poodle::service': 
        ensure => $ensure
    }
    Class ['poodle::install'] -> Class ['poodle::config'] ~> Class ['poodle::service']
}

...

class poodle::service ( $ensure = 'running') {
    service {'poodle':
        ensure     => $ensure,
        enable     => true,
        restart    => "/etc/init.d/poodle stop && sleep 5 && /etc/init.d/poodle start",
        subscribe  => File['/opt/poodle/poodle.py'],
    }
}

或者将参数添加到服务类中并仅包含该参数就足够了，因为服务类具有依赖关系，如下所示：

# SITE.PP
node 'tweedle.example.com' {
    include basicstuff
    include poodle
}
node 'beetle.example.com' {
    include basicstuff
    class { 'poodle':
        $ensure => 'stopped'
    }
}

## POODLE MODULE, manifests/init.pp
class poodle ( $ensure = 'running' ) {
    class {'poodle::install': }
    class {'poodle::config': }
    class {'poodle::service': 
        ensure => $ensure
    }
    Class ['poodle::install'] -> Class ['poodle::config'] ~> Class ['poodle::service']
}

...

class poodle::service ( $ensure ) {
    service {'poodle':
        ensure     => $ensure,
        enable     => true,
        restart    => "/etc/init.d/poodle stop && sleep 5 && /etc/init.d/poodle start",
        subscribe  => File['/opt/poodle/poodle.py'],
    }
}

# SITE.PP
node 'tweedle.example.com' {
    include basicstuff
    include poodle
}
node 'beetle.example.com' {
    include basicstuff
    include poodle
    class { 'poodle::service':
        $ensure => 'stopped'
    }
}

## POODLE MODULE, manifests/init.pp
class poodle {
    class {'poodle::install': }
    class {'poodle::config': }
    class {'poodle::service': 
        ensure => $ensure
    }
    Class ['poodle::install'] -> Class ['poodle::config'] ~> Class ['poodle::service']
}

...

class poodle::service ( $ensure = 'running') {
    service {'poodle':
        ensure     => $ensure,
        enable     => true,
        restart    => "/etc/init.d/poodle stop && sleep 5 && /etc/init.d/poodle start",
        subscribe  => File['/opt/poodle/poodle.py'],
    }
}

# SITE.PP
node 'tweedle.example.com' {
    include basicstuff
    include poodle
}
node 'beetle.example.com' {
    include basicstuff
    class { 'poodle::service':
        $ensure => 'stopped'
    }
}

## POODLE MODULE, manifests/init.pp
class poodle {
    class {'poodle::install': }
    class {'poodle::config': }
    class {'poodle::service': 
        ensure => $ensure
    }
    Class ['poodle::install'] -> Class ['poodle::config'] ~> Class ['poodle::service']
}

...

class poodle::service ( $ensure = 'running') {
    service {'poodle':
        ensure     => $ensure,
        enable     => true,
        restart    => "/etc/init.d/poodle stop && sleep 5 && /etc/init.d/poodle start",
        subscribe  => File['/opt/poodle/poodle.py'],
    }
}

这里的正确课程和最佳实践是什么？提前谢谢

通常，您不希望人们必须了解模块的内部结构才能使用它

我当然不会要求它们同时包含

poodle

和

poodle:service

模块通常遵循以下两种结构之一：

通过
```
init.pp
```
的单一入口点，用于具有很少/没有参数且没有单独角色的简单服务（客户端/服务器）或“多个数据库”（如数据库服务器可以在中配置多个数据库）（通过木偶）
通过子类和定义的类型处理不同角色和角色的多个入口点倍数

根据您所描述的，我将把参数放在主类中，并将其传递给服务子类

node 'beetle.example.com' {
    class { 'poodle::service':
        ensure => 'stopped'
    }
}

工作

但我不同意说“你不想让人们了解你模块的内部结构”，因为你希望在创建vhost时能够灵活地定义应该使用的端口、协议、后端代理+和模块等。

我看不出我的项目如何通过编写include apache、nginx或诸如此类的东西来实现这种灵活性。

说得清楚，公认的答案是将值传递给另一个类，我这样做了，它按预期工作。谢谢