I'm reading about Augeas to see what can be done with it, and
with the new 'augeas' resource type in 0.24.7. So far I have
only played using augtool, not the Puppet integration, but I
have a few questions:
1. Is it possible to specify what lens to use for editing a
certain file? Can I for instance tell it to use the sshd lens
to edit an sshd config file in a non-standard place? Or to
use the shellvars lens to edit /etc/sysconfig/sendmail (the
version of Augeas in Fedora 9 happily edits lots of other
files in /etc/sysconfig, but not the sendmail file). Do I
have to write a new lens for this?
2. How do I modify an entry in the tree, as opposed to rewrite it
with a fixed string? For example, the grub.conf file has
lines saying
kernel /vmlinuz-2.6.27.5-41.fc9.x86_64 ro root=/dev/sda2 rhgb quiet
and I want to remove the words "rhgb" and "quiet". Just doing
set /files/etc/grub.conf/title[1]/kernel
"/vmlinuz-2.6.27.5-41.fc9.x86_64 ro root=/dev/sda2"
is the wrong answer, because I might not know what "/dev/sda2"
should be on every system, and I certainly do not know what
the version of the kernel should be.
You might think that I could use the $kernelrelease fact, but
the kernel line I want to modify might not be for the kernel
that is actually running.
3. Continuing the above grub.conf example, there may be an unknown
number of kernel lines that need to be modified. How do I get
augeas to modify all of them in the above way?
4. In the /etc/logrotate.conf file in Fedora and CentOS, there is
an entry on the form:
/var/log/wtmp {
monthly
create 0664 root utmp
rotate 1
}
I want to comment out, or remove entirely, that entry. I can
find it with
match /files/etc/logrotate.conf/*/file "/var/log/wtmp"
which right now happens to give me
/files/etc/logrotate.conf/rule[1]/file
After finding that information, I want to do
rm /files/etc/logrotate.conf/rule[1]
but how do I feed the information from the match back to the
rm command?
That will do for now. :-)
/Bellman
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