Seems like Augeas doesn't have a really good concept of conf file
entry AND a comment that goes with it. I can 'ins' a comment before
the configuration item, but every time augeas runs, it will add
another.
I can re-'set' the comment before the existing configuration item, but
that won't work if the comment doesn't already exist. Kind of a
chicken and egg.
This is what I have, and it doesn't work. Probably the match fails on
the insert because the node doesn't exist at all -- too bad there
isn't an unless..
define sysctl::set($value, $comment=undef) {
include sysctl
$key = $name
if $comment {
$comment_use = $comment
} else {
$comment_use = "Managed by puppet: $key => $value"
}
$sysctl = '/files/etc/sysctl.conf'
augeas { "sysctl::set $key => $value":
changes => [ "set $sysctl/$key '$value", ],
notify => Service['sysctl'],
}
augeas { "sysctl::set insert comment for $key => $value":
changes => [ "ins #comment before $sysctl/$key" ],
onlyif => "match
$sysctl/#comment[following-sibling::*[1][self::$key]] size == 0",
require => Augeas["sysctl::set $key => $value"],
}
augeas { "sysctl::set change comment for $key => $value":
changes => [ "set
$sysctl/#comment[following-sibling::*[1][self::$key]] '$comment_use'"
],
onlyif => "match
$sysctl/#comment[following-sibling::*[1][self::$key]] size > 0",
require => Augeas["sysctl::set $key => $value"],
}
}
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