Re: [Libguestfs] [PATCH 3/5] sysprep: remove the custom kdump configurations
On Mon, Sep 09, 2013 at 04:09:14PM +0800, Wanlong Gao wrote:
Yes, sure. Then can you give some comments about following TODO
list?
For which is necessary to add for users and which is not?
Although we know almost all of the features we have in sysprep can be done
by "--script" feature, right?
"
add features to remove the following files or values
if user required.
B-1) Data files which are made by iscsi initiator.
/var/lib/iscsi/*
Some of this is configuration apparently; ie. it is set up by
the iscsiadm utility.
B-2) Definition files of iscsi target emulator.
/etc/tgt/*
Configuration?
B-3) Definition files of iptables
/etc/sysconfig/iptables
Although we added this already, I'm inclined to think it is
configuration, not temporary data.
B-4) Definition of TCP Wrapper
/etc/hosts.*
Configuration.
B-5) Definition for hostname/DNS.
/etc/resolv.conf
/etc/hosts
/etc/resolv.conf could be removed, definitely on guests which use
dhcp, if there is a way to tell if a guest uses dhcp.
/etc/hosts seems like configuration to me.
B-6) Definition of network routing
/etc/sysconfig/network-scripts/route-*
/etc/sysconfig/network-scripts/rule-*
Don't really know enough to comment on this.
B-7) Temporary files
/tmp/*
/var/tmp/*
Yes, it was good to remove this.
B-8) kdump setting file
/etc/kdump.conf
B-9) NFS setting.
/etc/exports
No.
B-10) Remove all files/directories under a directory which is
specified by
new virt-sysprep option
(User may want to each directories depends on thier circumstance.)
Yes, good idea. User should specify a wildcard / list of wildcards.
B-9) Remove or initialize value which is related specified
users/groups.
User can select a) or b)
a) Remove specified users/groups
- Remove definition for them from /etc/passwd and /etc/groups
- Remove their home directories.
(Don't remove the files /etc/passwd /etc/groups.)
Yes -- already done ('user-account').
b) Initialize normal users/groups password
Note:
Original requirement is to remove/initaliaze
all of normal UID/GID user's setting.
But the definition of normal user is a bit confusable.
RHEL6 : UID is 500 or more, RHEL7 : 1000 or more
In addition, nfsnobody uses 65534.
So, specifing concrete UID/GID by command option is desirable.
For example, "--uid=500,5021000-60000"
Unclear.
------
I think a better way to think about this: Suppose someone wants to use
virt-sysprep to get back to the original configuration of the guest at
installation. Wouldn't it be better (cleaner, safer) for them to
install a new guest from scratch?
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-top is 'top' for virtual machines. Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://people.redhat.com/~rjones/virt-top