Thanks, John. I didn't have another purpose for the shm_size variable.
Wasn't using the mount because I'm a rookie and still learning.
Bob
On Thursday, May 14, 2015 at 10:13:13 AM UTC-4, jcbollinger wrote:
>
>
>
> On Wednesday, May 13, 2015 at 2:55:03 PM UTC-5, Bob Vergeer wrote:
>>
>> Two issues, removing the decimal places and appending a character.
>> Trying to generate a /dev/shm line in /etc/fstab that is set to 1G less
>> than available RAM.
>>
>> The line should appear as follows in /etc/fstab:
>> ...
>> none /dev/shm tmpfs rw,exec,size=2048M 0 0
>> ...
>>
>> 1) How do I convert something like this to integer? The floating point
>> fails
>> $shm_size = $memorysize_mb - 1024
>>
>>
>
> Puppet 3's DSL does not have a mechanism for explicitly specifying data
> types or converting between them (but such a system is introduced in Puppet
> 4). Nevertheless, you have posed the wrong question: the issue is not so
> much about the type of $shm_size's value, but about how that value is used
> in assembling some string. That could be addressed either by assigning a
> value whose interpolation yields the desired result (which value doesn't
> have to be of integer type specifically), or by assembling the target
> string by some means other than interpolating the variable's value. I
> guess your current approach is presented in the next question.
>
>
>
>> 2) Used file_line to insert the string in /etc/fstab. How do I append
>> the M to the $shm_size variable without a space between?
>> line => 'none /dev/shm tmpfs rw,exec,size=$shm_sizeM
>> 0 0'
>>
>>
>
> In direct answer to the question, this should work:
>
> line => "none /dev/shm tmpfs rw,exec,size=${shm_size}M 0
> 0"
>
> Note the double quotes instead of single, and especially the curly braces
> around the variable name.
>
> That begs the question, however, of why you are managing /etc/fstab via
> File_line resources, when you could instead do it more reliably via the
> standard "Mount" resource type. Switching to a Mount won't in itself solve
> your problem with expressing the mount options, but it is nevertheless far
> superior. For example, if you don't need $shm_size for anything else, then
> this Mount resource would probably serve your whole need:
>
> mount { '/dev/shm':
> ensure => 'present',
> device => 'none',
> fstype => 'tmpfs',
> options => inline_template('rw,exec,size=<%= @memorysize_mb.to_i - 1024
> %>M'),
> dump => '0',
> pass => '0'
> }
>
>
> John
>
>
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