On Tue, 9 Feb 2016 10:32, Jochen Wiedmann wrote:
Hi,
I am trying to implement something like an "LXC on CentOS 7 HowTo" for
internal use. (Might as well get public afterwards.) I am following
the HowTo for CentOS 6
(https://wiki.centos.org/HowTos/LXC-on-CentOS6). So, here's what I did
so far (Steps 1-6 can easily be omitted, but I am trying to be
complete.)
1.) Disable delta RPM's in /etc/yum.conf
_________^
Well, that needs a explicite explanation on the WHY, IMHO not needed
2.) Remove LibreOffice
sudo yum remove "libreoffice*"
_______________^
Well, that is personal taste, the existence of a installed LibreOffice
should not influence LXC in any way.
3.) System update
sudo yum -y update
This should be first point. No one should start a installation of
such a complex matter as Virtualisation on a outdated system.
Best add comment about the use of "yum ps" or the real need
of a reboot in case of glibc/udev/kernel updates before going
further in installing.
4.) Install some niceties
sudo yum -y install emacs emacs-nox "@Development Tools" git subversion
_______________^
Again personal taste, for some is the installation of emacs a sacred act,
for other pure blasphemy. say something about making sure the the
favourite text-cli editor is installed is more helpful here.
Remember the UNIX way: Less is more. Less software on the host(metal),
means more uptime between unavoidable reboots, esp. for servers.
5.) Reboot
6.) Install VirtualBox Guest Additions
________^
Eh? You want to use LXC, not "VirtualBox", what are the "Guest Additions"
for? Explain, if really needed
7.) Install libvirt
_______^
Give better title here, e.g. "Install packages for LXC: libvirt + co."
sudo yum -y install libvirt libvirt-client libvirt-install
8.) Setting up root fs for a container:
sudo su -
mkdir -p /var/lib/libvirt/lxc/centos01/etc/yum.repos.d
cat cat /etc/yum.repos.d/CentOS-Base.repo | sed
s/'$releasever'/7/g
> /var/lib/libvirt/lxc/centos01/etc/yum.repos.d/CentOS-Base.repo
_______^
Ok, that can be done better, and easier to read and understand:
[code]
cp -t /var/lib/libvirt/lxc/centos01/etc/yum.repos.d/ \
/etc/yum.repos.d/CentOS-Base.repo
sed --in-place 's/$releasever/7/g' \
/var/lib/libvirt/lxc/centos01/etc/yum.repos.d/CentOS-Base.repo
[/code]
If you really need the switched of "Delta RPM" stuff, here and now is the
place.
yum groupinstall core --installroot=/var/lib/libvirt/lxc/centos01
# The following command seems to be redundant, as both
packages are already installed as part of the core group.
yum -y install plymouth libselinux-python
--installroot=/var/lib/libvirt/lxc/centos01
Now, according to the old howto, I am to configure PAM in the new root
fs. Reading through that; I don't really understand what I am to do.
For example, I am to replace a line with "session required
pam_selinux.so close". However, the matching line is a comment line,
which makes me unsure.
Are those PAM configurations still required? If so, could someone help
me on what to do exactly?
Thanks,
Jochen
I have not needed any pam-monging so far, but ... [shrugs].
Please, some other (real-live) expert, go over the installation procedere,
too, I'm no guru, nor a last instance.
Lets give enough input to make this HowTo conform to best practises.
- Yamaban.
_______________________________________________
CentOS-virt mailing list
CentOS-virt@xxxxxxxxxx
https://lists.centos.org/mailman/listinfo/centos-virt
