thr3ads.net - Puppet users - [Puppet Users] What is the alternative to Ruby DSL as use of the Ruby DSL is deprecated ? [Aug 2013]

If this information is useful, please help other people find it:
Share via:

Stefan Schmid

2013-Aug-25 16:39 UTC

[Puppet Users] What is the alternative to Ruby DSL as use of the Ruby DSL is deprecated ?

Hi

I am new to puppet and need to manage host entries in file /etc/hosts as 
follows on node mail.example.com and db.example.com. I do not want to 
manage the whole file /etc/hosts with puppet, only a few entries.

puppet version 3.2.1

node mail.example.com, file /etc/hosts:
(..)
172.16.89.96    ldapmaster.example.com    ldapmaster ldap
172.16.89.85    sms.example.com    sms sms-gateway
(..)

node db.example.com, file /etc/hosts:
(..)
172.16.89.80    abc.example.com abc
172.16.89.81    xyz.example.com xyz bigben
(..)

In general, a node may have 0 to n host entries. The number of host entries 
on a node A may differ from the number host entries on a node B. A certain 
host entry ( IP-Address  Full-Qualified-Hostname  Short-Hostname)
may be in the file /etc/hosts on 0 to n nodes concurrently.

To manage the above host entries on node mail.example.com and 
db.example.com I used Ruby DSL as follows, then I learnt that Ruby DSL is 
deprecated. What is the alternative to Ruby DSL ? Any hint
would be helpful.

A puppet module using Ruby DSL:

puppetmaster:/etc/puppet/modules/hosts/manifests # cat init.rb 

hostclass :hosts do

 entries = scope.lookupvar("hosts_entries")

 raise Puppet::ERROR,
  "hosts_entries must be a Hash" unless entries.kind_of?(Hash)

 entries.each do |title, parameters|

 host( title,
  :ensure       => parameters["ensure"],
  :target       => parameters["target"],
  :ip           => parameters["ip"],
  :host_aliases => parameters["host_aliases"])
 end
end
 
puppetmaster:/etc/puppet/modules/hosts/manifests #


Basic ENC script output for the Ruby DSL and node mail.example.com :
(..)
---
parameters:
 hosts_entries:
  sms.example.com:
    ensure: present
    target: /etc/hosts
    ip: 172.16.89.85
    host_aliases: 
     - sms 
     - sms-gateway
  ldapmaster.example.com:
    ensure: present
    target: /etc/hosts
    ip: 172.16.89.96
    host_aliases: 
     - ldapmaster 
     - ldap
classes:
 - hosts
(..)


Basic ENC script output for the Ruby DSL and node db.example.com :
(..)
---
parameters:
 hosts_entries:
  abc.example.com:
    ensure: present
    target: /etc/hosts
    ip: 172.16.89.80
    host_aliases: abc
  xyz.example.com:
    ensure: present
    target: /etc/hosts
    ip: 172.16.89.81
    host_aliases: 
     - xyz 
     - bigben
classes:
 - hosts
(..)


Thanks.

-- 
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to puppet-users+unsubscribe@googlegroups.com.
To post to this group, send email to puppet-users@googlegroups.com.
Visit this group at http://groups.google.com/group/puppet-users.
For more options, visit https://groups.google.com/groups/opt_out.

Brian Lalor

2013-Aug-25 17:02 UTC

head link

Re: [Puppet Users] What is the alternative to Ruby DSL as use of the Ruby DSL is deprecated ?

There''s a host type built into puppet. 

--
Brian Lalor
blalor@bravo5.org

On Aug 25, 2013, at 9:39 AM, Stefan Schmid <schms@web.de> wrote:
> Hi
> 
> I am new to puppet and need to manage host entries in file /etc/hosts as
follows on node mail.example.com and db.example.com. I do not want to manage the
whole file /etc/hosts with puppet, only a few entries.
> 
> puppet version 3.2.1
> 
> node mail.example.com, file /etc/hosts:
> (..)
> 172.16.89.96    ldapmaster.example.com    ldapmaster ldap
> 172.16.89.85    sms.example.com    sms sms-gateway
> (..)
> 
> node db.example.com, file /etc/hosts:
> (..)
> 172.16.89.80    abc.example.com abc
> 172.16.89.81    xyz.example.com xyz bigben
> (..)
> 
> In general, a node may have 0 to n host entries. The number of host entries
on a node A may differ from the number host entries on a node B. A certain host
entry ( IP-Address  Full-Qualified-Hostname  Short-Hostname)
> may be in the file /etc/hosts on 0 to n nodes concurrently.
> 
> To manage the above host entries on node mail.example.com and
db.example.com I used Ruby DSL as follows, then I learnt that Ruby DSL is
deprecated. What is the alternative to Ruby DSL ? Any hint
> would be helpful.
> 
> A puppet module using Ruby DSL:
> 
> puppetmaster:/etc/puppet/modules/hosts/manifests # cat init.rb 
> 
> hostclass :hosts do
> 
>  entries = scope.lookupvar("hosts_entries")
> 
>  raise Puppet::ERROR,
>   "hosts_entries must be a Hash" unless entries.kind_of?(Hash)
> 
>  entries.each do |title, parameters|
> 
>  host( title,
>   :ensure       => parameters["ensure"],
>   :target       => parameters["target"],
>   :ip           => parameters["ip"],
>   :host_aliases => parameters["host_aliases"])
>  end
> end
>  
> puppetmaster:/etc/puppet/modules/hosts/manifests #
> 
> 
> Basic ENC script output for the Ruby DSL and node mail.example.com :
> (..)
> ---
> parameters:
>  hosts_entries:
>   sms.example.com:
>     ensure: present
>     target: /etc/hosts
>     ip: 172.16.89.85
>     host_aliases: 
>      - sms 
>      - sms-gateway
>   ldapmaster.example.com:
>     ensure: present
>     target: /etc/hosts
>     ip: 172.16.89.96
>     host_aliases: 
>      - ldapmaster 
>      - ldap
> classes:
>  - hosts
> (..)
> 
> 
> Basic ENC script output for the Ruby DSL and node db.example.com :
> (..)
> ---
> parameters:
>  hosts_entries:
>   abc.example.com:
>     ensure: present
>     target: /etc/hosts
>     ip: 172.16.89.80
>     host_aliases: abc
>   xyz.example.com:
>     ensure: present
>     target: /etc/hosts
>     ip: 172.16.89.81
>     host_aliases: 
>      - xyz 
>      - bigben
> classes:
>  - hosts
> (..)
> 
> 
> Thanks.
> 
> -- 
> You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an
email to puppet-users+unsubscribe@googlegroups.com.
> To post to this group, send email to puppet-users@googlegroups.com.
> Visit this group at http://groups.google.com/group/puppet-users.
> For more options, visit https://groups.google.com/groups/opt_out.
-- 
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to puppet-users+unsubscribe@googlegroups.com.
To post to this group, send email to puppet-users@googlegroups.com.
Visit this group at http://groups.google.com/group/puppet-users.
For more options, visit https://groups.google.com/groups/opt_out.

Mike Delaney

2013-Aug-25 20:03 UTC

head link

Re: [Puppet Users] What is the alternative to Ruby DSL as use of the Ruby DSL is deprecated ?

Hi Stefan,

I believe for the general case, the best practice is to encapsulate the
logic that can''t
be expressed directly in the PuppetDSL in custom functions called from the
DSL.
Some of the features in the new experimental parser like iteration are
aimed at
reducing the need to write trivial, one-off functions.

In this particular case, you can easily re-write your RubyDSL class in the
PuppetDSL
using the standard create_resources() function:

class hosts {
  create_resources(''host'', $::host_entries)
}

http://docs.puppetlabs.com/references/3.2.latest/function.html#createresources

If you haven''t already, I''d definitely recommend adding the
stdlib module,
as it
includes a ton of useful functions.

https://forge.puppetlabs.com/puppetlabs/stdlib

-Mike

On Sun, Aug 25, 2013 at 9:39 AM, Stefan Schmid <schms@web.de> wrote:
> Hi
>
> I am new to puppet and need to manage host entries in file /etc/hosts as
> follows on node mail.example.com and db.example.com. I do not want to
> manage the whole file /etc/hosts with puppet, only a few entries.
>
> puppet version 3.2.1
>
> node mail.example.com, file /etc/hosts:
> (..)
> 172.16.89.96    ldapmaster.example.com    ldapmaster ldap
> 172.16.89.85    sms.example.com    sms sms-gateway
> (..)
>
> node db.example.com, file /etc/hosts:
> (..)
> 172.16.89.80    abc.example.com abc
> 172.16.89.81    xyz.example.com xyz bigben
> (..)
>
> In general, a node may have 0 to n host entries. The number of host
> entries on a node A may differ from the number host entries on a node B. A
> certain host entry ( IP-Address  Full-Qualified-Hostname  Short-Hostname)
> may be in the file /etc/hosts on 0 to n nodes concurrently.
>
> To manage the above host entries on node mail.example.com and
> db.example.com I used Ruby DSL as follows, then I learnt that Ruby DSL is
> deprecated. What is the alternative to Ruby DSL ? Any hint
> would be helpful.
>
> A puppet module using Ruby DSL:
>
> puppetmaster:/etc/puppet/modules/hosts/manifests # cat init.rb
>
> hostclass :hosts do
>
>  entries = scope.lookupvar("hosts_entries")
>
>  raise Puppet::ERROR,
>   "hosts_entries must be a Hash" unless entries.kind_of?(Hash)
>
>  entries.each do |title, parameters|
>
>  host( title,
>   :ensure       => parameters["ensure"],
>   :target       => parameters["target"],
>   :ip           => parameters["ip"],
>   :host_aliases => parameters["host_aliases"])
>  end
> end
>
> puppetmaster:/etc/puppet/modules/hosts/manifests #
>
>
> Basic ENC script output for the Ruby DSL and node mail.example.com :
> (..)
> ---
> parameters:
>  hosts_entries:
>   sms.example.com:
>     ensure: present
>     target: /etc/hosts
>     ip: 172.16.89.85
>     host_aliases:
>      - sms
>      - sms-gateway
>   ldapmaster.example.com:
>     ensure: present
>     target: /etc/hosts
>     ip: 172.16.89.96
>     host_aliases:
>      - ldapmaster
>      - ldap
> classes:
>  - hosts
> (..)
>
>
> Basic ENC script output for the Ruby DSL and node db.example.com :
> (..)
> ---
> parameters:
>  hosts_entries:
>   abc.example.com:
>     ensure: present
>     target: /etc/hosts
>     ip: 172.16.89.80
>     host_aliases: abc
>   xyz.example.com:
>     ensure: present
>     target: /etc/hosts
>     ip: 172.16.89.81
>     host_aliases:
>      - xyz
>      - bigben
> classes:
>  - hosts
> (..)
>
>
> Thanks.
>
>  --
> You received this message because you are subscribed to the Google Groups
> "Puppet Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to puppet-users+unsubscribe@googlegroups.com.
> To post to this group, send email to puppet-users@googlegroups.com.
> Visit this group at http://groups.google.com/group/puppet-users.
> For more options, visit https://groups.google.com/groups/opt_out.
>
-- 
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to puppet-users+unsubscribe@googlegroups.com.
To post to this group, send email to puppet-users@googlegroups.com.
Visit this group at http://groups.google.com/group/puppet-users.
For more options, visit https://groups.google.com/groups/opt_out.

Stefan Schmid

2013-Aug-26 08:58 UTC

head link

Re: [Puppet Users] What is the alternative to Ruby DSL as use of the Ruby DSL is deprecated ?

Hi Mike

Yes, create_resources seems to be just right.
Thanks for the hint.

- Stefan

Am Sonntag, 25. August 2013 22:03:47 UTC+2 schrieb Mike
Delaney:>
> Hi Stefan,
>
> I believe for the general case, the best practice is to encapsulate the 
> logic that can''t
> be expressed directly in the PuppetDSL in custom functions called from the 
> DSL.
> Some of the features in the new experimental parser like iteration are 
> aimed at
> reducing the need to write trivial, one-off functions.
>
> In this particular case, you can easily re-write your RubyDSL class in the 
> PuppetDSL
> using the standard create_resources() function:
>
> class hosts {
>   create_resources(''host'', $::host_entries)
> }
>
>
>
http://docs.puppetlabs.com/references/3.2.latest/function.html#createresources
>
> If you haven''t already, I''d definitely recommend adding
the stdlib module,
> as it
> includes a ton of useful functions.
>
> https://forge.puppetlabs.com/puppetlabs/stdlib
>
> -Mike
>
> On Sun, Aug 25, 2013 at 9:39 AM, Stefan Schmid <sc...@web.de
<javascript:>
> > wrote:
>
>> Hi
>>
>> I am new to puppet and need to manage host entries in file /etc/hosts
as
>> follows on node mail.example.com and db.example.com. I do not want to 
>> manage the whole file /etc/hosts with puppet, only a few entries.
>>
>> puppet version 3.2.1
>>
>> node mail.example.com, file /etc/hosts:
>> (..)
>> 172.16.89.96    ldapmaster.example.com    ldapmaster ldap
>> 172.16.89.85    sms.example.com    sms sms-gateway
>> (..)
>>
>> node db.example.com, file /etc/hosts:
>> (..)
>> 172.16.89.80    abc.example.com abc
>> 172.16.89.81    xyz.example.com xyz bigben
>> (..)
>>
>> In general, a node may have 0 to n host entries. The number of host 
>> entries on a node A may differ from the number host entries on a node
B. A
>> certain host entry ( IP-Address  Full-Qualified-Hostname 
Short-Hostname)
>> may be in the file /etc/hosts on 0 to n nodes concurrently.
>>
>> To manage the above host entries on node mail.example.com and 
>> db.example.com I used Ruby DSL as follows, then I learnt that Ruby DSL 
>> is deprecated. What is the alternative to Ruby DSL ? Any hint
>> would be helpful.
>>
>> A puppet module using Ruby DSL:
>>
>> puppetmaster:/etc/puppet/modules/hosts/manifests # cat init.rb 
>>
>> hostclass :hosts do
>>
>>  entries = scope.lookupvar("hosts_entries")
>>
>>  raise Puppet::ERROR,
>>   "hosts_entries must be a Hash" unless
entries.kind_of?(Hash)
>>
>>  entries.each do |title, parameters|
>>
>>  host( title,
>>   :ensure       => parameters["ensure"],
>>   :target       => parameters["target"],
>>   :ip           => parameters["ip"],
>>   :host_aliases => parameters["host_aliases"])
>>  end
>> end
>>  
>> puppetmaster:/etc/puppet/modules/hosts/manifests #
>>
>>
>> Basic ENC script output for the Ruby DSL and node mail.example.com :
>> (..)
>> ---
>> parameters:
>>  hosts_entries:
>>   sms.example.com:
>>     ensure: present
>>     target: /etc/hosts
>>     ip: 172.16.89.85
>>     host_aliases: 
>>      - sms 
>>      - sms-gateway
>>   ldapmaster.example.com:
>>     ensure: present
>>     target: /etc/hosts
>>     ip: 172.16.89.96
>>     host_aliases: 
>>      - ldapmaster 
>>      - ldap
>> classes:
>>  - hosts
>> (..)
>>
>>
>> Basic ENC script output for the Ruby DSL and node db.example.com :
>> (..)
>> ---
>> parameters:
>>  hosts_entries:
>>   abc.example.com:
>>     ensure: present
>>     target: /etc/hosts
>>     ip: 172.16.89.80
>>     host_aliases: abc
>>   xyz.example.com:
>>     ensure: present
>>     target: /etc/hosts
>>     ip: 172.16.89.81
>>     host_aliases: 
>>      - xyz 
>>      - bigben
>> classes:
>>  - hosts
>> (..)
>>
>>
>> Thanks.
>>
>>  -- 
>> You received this message because you are subscribed to the Google
Groups
>> "Puppet Users" group.
>> To unsubscribe from this group and stop receiving emails from it, send
an
>> email to puppet-users...@googlegroups.com <javascript:>.
>> To post to this group, send email to
puppet...@googlegroups.com<javascript:>
>> .
>> Visit this group at http://groups.google.com/group/puppet-users.
>> For more options, visit https://groups.google.com/groups/opt_out.
>>
>
>
-- 
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to puppet-users+unsubscribe@googlegroups.com.
To post to this group, send email to puppet-users@googlegroups.com.
Visit this group at http://groups.google.com/group/puppet-users.
For more options, visit https://groups.google.com/groups/opt_out.

Erik Dalén

2013-Aug-29 14:29 UTC

head link

Re: [Puppet Users] What is the alternative to Ruby DSL as use of the Ruby DSL is deprecated ?

In puppet 3.2+ you can enable the future parser (--parser=future) which
allows iteration like that directly in the puppet language.



On 26 August 2013 03:58, Stefan Schmid <schms@web.de> wrote:
>
> Hi Mike
>
> Yes, create_resources seems to be just right.
> Thanks for the hint.
>
> - Stefan
>
> Am Sonntag, 25. August 2013 22:03:47 UTC+2 schrieb Mike Delaney:
>>
>> Hi Stefan,
>>
>> I believe for the general case, the best practice is to encapsulate the
>> logic that can''t
>> be expressed directly in the PuppetDSL in custom functions called from
>> the DSL.
>> Some of the features in the new experimental parser like iteration are
>> aimed at
>> reducing the need to write trivial, one-off functions.
>>
>> In this particular case, you can easily re-write your RubyDSL class in
>> the PuppetDSL
>> using the standard create_resources() function:
>>
>> class hosts {
>>   create_resources(''host'', $::host_entries)
>> }
>>
>> http://docs.puppetlabs.com/**references/3.2.latest/**
>>
function.html#createresources<http://docs.puppetlabs.com/references/3.2.latest/function.html#createresources>
>>
>> If you haven''t already, I''d definitely recommend
adding the stdlib
>> module, as it
>> includes a ton of useful functions.
>>
>>
https://forge.puppetlabs.com/**puppetlabs/stdlib<https://forge.puppetlabs.com/puppetlabs/stdlib>
>>
>> -Mike
>>
>> On Sun, Aug 25, 2013 at 9:39 AM, Stefan Schmid <sc...@web.de>
wrote:
>>
>>> Hi
>>>
>>> I am new to puppet and need to manage host entries in file
/etc/hosts as
>>> follows on node mail.example.com and db.example.com. I do not want
to
>>> manage the whole file /etc/hosts with puppet, only a few entries.
>>>
>>> puppet version 3.2.1
>>>
>>> node mail.example.com, file /etc/hosts:
>>> (..)
>>> 172.16.89.96    ldapmaster.example.com    ldapmaster ldap
>>> 172.16.89.85    sms.example.com    sms sms-gateway
>>> (..)
>>>
>>> node db.example.com, file /etc/hosts:
>>> (..)
>>> 172.16.89.80    abc.example.com abc
>>> 172.16.89.81    xyz.example.com xyz bigben
>>> (..)
>>>
>>> In general, a node may have 0 to n host entries. The number of host
>>> entries on a node A may differ from the number host entries on a
node B. A
>>> certain host entry ( IP-Address  Full-Qualified-Hostname 
Short-Hostname)
>>> may be in the file /etc/hosts on 0 to n nodes concurrently.
>>>
>>> To manage the above host entries on node mail.example.com and
>>> db.example.com I used Ruby DSL as follows, then I learnt that Ruby
DSL
>>> is deprecated. What is the alternative to Ruby DSL ? Any hint
>>> would be helpful.
>>>
>>> A puppet module using Ruby DSL:
>>>
>>> puppetmaster:/etc/puppet/**modules/hosts/manifests # cat init.rb
>>>
>>> hostclass :hosts do
>>>
>>>  entries = scope.lookupvar("hosts_**entries")
>>>
>>>  raise Puppet::ERROR,
>>>   "hosts_entries must be a Hash" unless
entries.kind_of?(Hash)
>>>
>>>  entries.each do |title, parameters|
>>>
>>>  host( title,
>>>   :ensure       => parameters["ensure"],
>>>   :target       => parameters["target"],
>>>   :ip           => parameters["ip"],
>>>   :host_aliases => parameters["host_aliases"])
>>>  end
>>> end
>>>
>>> puppetmaster:/etc/puppet/**modules/hosts/manifests #
>>>
>>>
>>> Basic ENC script output for the Ruby DSL and node mail.example.com
:
>>> (..)
>>> ---
>>> parameters:
>>>  hosts_entries:
>>>   sms.example.com:
>>>     ensure: present
>>>     target: /etc/hosts
>>>     ip: 172.16.89.85
>>>     host_aliases:
>>>      - sms
>>>      - sms-gateway
>>>   ldapmaster.example.com:
>>>     ensure: present
>>>     target: /etc/hosts
>>>     ip: 172.16.89.96
>>>     host_aliases:
>>>      - ldapmaster
>>>      - ldap
>>> classes:
>>>  - hosts
>>> (..)
>>>
>>>
>>> Basic ENC script output for the Ruby DSL and node db.example.com :
>>> (..)
>>> ---
>>> parameters:
>>>  hosts_entries:
>>>   abc.example.com:
>>>     ensure: present
>>>     target: /etc/hosts
>>>     ip: 172.16.89.80
>>>     host_aliases: abc
>>>   xyz.example.com:
>>>     ensure: present
>>>     target: /etc/hosts
>>>     ip: 172.16.89.81
>>>     host_aliases:
>>>      - xyz
>>>      - bigben
>>> classes:
>>>  - hosts
>>> (..)
>>>
>>>
>>> Thanks.
>>>
>>>  --
>>> You received this message because you are subscribed to the Google
>>> Groups "Puppet Users" group.
>>> To unsubscribe from this group and stop receiving emails from it,
send
>>> an email to puppet-users...@**googlegroups.com.
>>> To post to this group, send email to puppet...@googlegroups.com.
>>>
>>> Visit this group at
http://groups.google.com/**group/puppet-users<http://groups.google.com/group/puppet-users>
>>> .
>>> For more options, visit
https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out>
>>> .
>>>
>>
>>  --
> You received this message because you are subscribed to the Google Groups
> "Puppet Users" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to puppet-users+unsubscribe@googlegroups.com.
> To post to this group, send email to puppet-users@googlegroups.com.
> Visit this group at http://groups.google.com/group/puppet-users.
> For more options, visit https://groups.google.com/groups/opt_out.
>


-- 
Erik Dalén

-- 
You received this message because you are subscribed to the Google Groups
"Puppet Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to puppet-users+unsubscribe@googlegroups.com.
To post to this group, send email to puppet-users@googlegroups.com.
Visit this group at http://groups.google.com/group/puppet-users.
For more options, visit https://groups.google.com/groups/opt_out.

Puppet users - Aug 2013 - What is the alternative to Ruby DSL as use of the Ruby DSL is deprecated ?

[Puppet Users] What is the alternative to Ruby DSL as use of the Ruby DSL is deprecated ?

Re: [Puppet Users] What is the alternative to Ruby DSL as use of the Ruby DSL is deprecated ?

Re: [Puppet Users] What is the alternative to Ruby DSL as use of the Ruby DSL is deprecated ?

Re: [Puppet Users] What is the alternative to Ruby DSL as use of the Ruby DSL is deprecated ?

Re: [Puppet Users] What is the alternative to Ruby DSL as use of the Ruby DSL is deprecated ?