Is there a way to create a file only under certain conditions?
I would like to check if a certain device exists and the config file is
still missing. If the file ist missing, create the file and update the
initramdisk. (This device exists only on our notebooks, otherwise it is a
desktop and nothing should be done)
This is our first try:
class hibernate {
notice("hibernate")
exec { "echo":
alias => "echo",
# onlyif => "test -b /dev/mapper/swap_crypt -a ! -f
/etc/initramfs-tools/conf.d/resume" ,
# onlyif => "true" ,
onlyif => "false" ,
}
# should not be created as Exec["echo"] is "false"!
# ... but "resume" is still created
file { "resume":
name => "/etc/initramfs-tools/conf.d/resume",
source => "puppet:///modules/hibernate/resume",
mode => 644,
require => Exec["echo"],
}
# should not be execute as Exec["echo"] is "false"!
# ... but is executed because "resume" had been created
exec { "update-initramfs":
name => "update-initramfs -u",
refreshonly => true,
subscribe => File["resume"],
}
}
Even Exec["echo"] is not beeing executed, the file "resume" will be
created and "update-initramfs" is executed.
The workaround is to avoid the file-type an simple use an exec with an
"echo .. > file" in it.
class hibernate {
exec { "echo RESUME=/dev/mapper/swap_crypt >
/etc/initramfs-tools/conf.d/resume":
alias => "echo",
onlyif => "test -b /dev/mapper/swap_crypt -a ! -f
/etc/initramfs-tools/conf.d/resume" ,
}
# if "onlyif" is successful, then Exec["update-initramfs"] is triggerd
exec { "update-initramfs":
name => "update-initramfs -u",
refreshonly => true,
subscribe => Exec["echo"],
}
}
Is there any way to use something like "refreshonly" also for File?
Patrick
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