On 10/02/12 20:10, Joe wrote:
> I'm trying to add a mount option using puppet/augeas. Something like:
>
> class acl {
> augeas { "var_fs_acl":
> context => "/files/etc/fstab",
> changes => ["ins opt after *[file='/var']/
> opt[last()]",
> "set *[file='/var']/opt[last()] acl"],
> onlyif => "match *[file='/var']/opt[.='acl'] size ==
> 0"
> }
> }
>
> This works if /var is a filesystem, but fails if /var is not. Since I
> can't have two onlyif clauses, I'm not sure how to say:
> If /var is a filesystem and
> doesn't already have an opt of acl
>
> Any suggestions would be appreciated.
Try this:
augeas { "var_fs_acl":
context => "/files/etc/fstab",
changes => [
"ins opt after *[file='/var']/opt[last()]",
"set *[file='/var']/opt[last()] acl",
],
onlyif => "match *[file='/var' and count(opt[.='acl'])=0] size > 0",
}
The idea is that the match condition in onlyif will return the /var
node, only when it has no "acl" opt nodes beneath it.
While the above may work, I'd urge you to consider how you configure
systems with Puppet. Detecting the current configuration (i.e. does or
doesn't have /var) before applying changes is best done with custom
facts or only applying the class to nodes that are supposed to have
/var, rather than complex "onlyif" workarounds on resources.
Hope that helps,
--
Dominic Cleal
Red Hat Consulting
m: +44 (0)7817 878113
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