That's a really good idea. Thanks for sharing.
Ed
Sent from my iPhone
On May 12, 2009, at 11:23 AM, Nigel Kersten <nig...@google.com> wrote:
>
> On Tue, May 12, 2009 at 8:16 AM, Edward Bailey
> <eds.mailing.list.acco...@gmail.com> wrote:
>> To explain the background behind my question
>>
>> We have a number of situations where it would be great if I could
>> have
>> puppet automatically maintain a symlink for a resource such as the
>> Java JVM.
>>
>> For example - we install the JDK in /usr/java so after the RPM
>> install, the
>> path to the JVM is /usr/java/jdk1.5.0_16. In order to simplify
>> application
>> configuration, I like to make JAVA_HOME something generic like
>> /usr/java/java. I do this by creating a symlink
>>
>> ln -s /usr/java/jdk1.5.0_16/ /usr/java/java
>>
>> I would like to have puppet maintain the symlink so that when YUM
>> updates
>> the JVM, the symlink gets updated as well. I know I could do this
>> in the RPM
>> or using exec but that sounds like too much work:)
>>
>> Just for fun I tried to setup a file type in puppet to create the
>> symlink
>> using a wildcard. I did not expect this to work given the need for
>> shell
>> expansion.
>>
>> file { "/usr/java/java":
>> ensure => "/usr/java/jdk1.*"
>> }
>>
>> Is their another way to do this in the puppet framework? I can do
>> this using
>> exec, but I wanted to work from within puppet first.
>
> So if you write a fact that is your jdk path, you could then use it in
> your manifests:
>
> file { "/usr/java/java":
> ensure => symlink,
> replace => true
> target => $jdk_path,
> }
>
> That would seem to be the simplest option.
>
>
>
> --
> Nigel Kersten
> nig...@google.com
> System Administrator
> Google, Inc.
>
> >
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