maas-devel team mailing list archive

[Scott Moser <smoser@xxxxxxxxxx>]

On Fri, 18 Jan 2013, Diogo Matsubara wrote:

> I added these instructions to the wiki:
> https://wiki.canonical.com/Launchpad/MAASTesting

As this is a public list, is there a publicly available document like
this?
>
> Thanks Scott!
>
>
> On Thu, Jan 17, 2013 at 12:08 PM, Diogo Matsubara
> <matsubara@xxxxxxxxxxxxx>wrote:
>
> > Hi Scott,
> >
> > thanks for these instructions, they're very useful.
> > There are two small corrections to the script you sent below:
> >
> > On Thu, Dec 13, 2012 at 12:35 PM, Scott Moser <smoser@xxxxxxxxxx> wrote:
> >
> >> Hey all,
> >>
> >> Whenever people have problems with enlistment or commissioning, often
> >> times debugging from within the ephemeral image is needed to see whats
> >> going on.
> >>
> >> Below is a general "how to get around" guide.
> >>
> >> ### backdoor (add a login) to ephemeral images ###
> >> # If you cannot login to an instance, you might have to "backdoor it"
> >> # in order to see what is going wrong.  I wrote a simple utility
> >> # that injects a user and password into an image.  Heres how to
> >> # add a 'backdoor' user with a password to your images.
> >> bzr branch lp:~smoser/+junk/backdoor-image
> >> imgs=$(echo var/lib/maas/ephemeral/*/*/*/*/*.img)
> >> for img in $imgs; do
> >>   [ -f "$img.dist" ] || cp -a --sparse=always $img.dist
> >> done
> >>
> >
> > I assume you wanted to make a backup copy of the original image files. The
> > cp command is missing an argument though:
> >
> >    [ -f "$img.dist" ] || cp -a --sparse=always $img $img.dist
> >
> > Is that the original intention?
> >
> >
> > for img in $imgs; do
> >>   sudo ./backdoor-image -v --user=backdoor --password-auth
> >> --password=ubuntu
> >> done
> >>
> >
> > Likewise here:
> >   sudo ./backdoor-image -v --user=backdoor --password-auth
> > --password=ubuntu $img
> >
> >
> >
> >>
> >> ### Inside the ephemeral image  ###
> >>
> >> ## Important files for debugging:
> >> # Someone is likely to ask you for these things to help debug
> >> /var/log/cloud-init.log
> >> /var/log/boot.log
> >> /var/log/cloud-init-output.log
> >>
> >> # After enlistment or commissioning, the user-data from maas instructs
> >> # the system to poweroff.  To stop that from happening, you can just
> >> # touch a file in /tmp.
> >> touch /tmp/block-poweroff
> >>
> >> ## maas credentials:
> >> # maas credentials can be found in 2 places:
> >> # * from the cmdline you'll see a 'url=' or 'cloud-config-url=' parameter
> >> #   You can get the cloud-config from that url, which will have
> >> #   credentials.
> >> #   example:
> >> #    $ sed -n 's,.*url=\([^ ]*\).*,\1,p' /proc/cmdline
> >> #
> >> http://10.55.60.194/MAAS/metadata/latest/enlist-preseed/?op=get_enlist_preseed
> >> # * from /etc/cloud/cloud.cfg.d/91_kernel_cmdline_url
> >> #   The file was pulled from url= parameter by cloud-init
> >> #   $ sudo cat /etc/cloud/cloud.cfg.d/91_kernel_cmdline
> >>
> >> ### maas datasource ###
> >> # the cloud-init datasource for MAAS can be invoked as a 'main' for
> >> # debugging purposes. To do so, you need to know the url for the maas
> >> # datasource and a config file that contains credentials.
> >> #
> >> $ cfg=$(echo /etc/cloud/cloud.cfg.d/*_cmdline_url.cfg)
> >> $ echo $cfg
> >> /etc/cloud/cloud.cfg.d/91_kernel_cmdline_url.cfg
> >>
> >> # now get the metadata_url from there.
> >> $ url=$(sudo awk '$1 == "metadata_url:" { print $2 }' $cfg)
> >> $ echo $url
> >> http://10.55.60.194/MAAS/metadata/enlist
> >>
> >> # invoke the client
> >> # /usr/share/pyshared/cloudinit/sources/DataSourceMAAS.py
> >> # the client has --help Usage also, but here is an example on how
> >> # to use it.
> >> $ maasds="/usr/share/pyshared/cloudinit/sources/DataSourceMAAS.py"
> >> $ sudo python $maasds --config=$cfg get $url
> >> == http://10.55.60.194/MAAS/metadata/enlist ==
> >> 2012-03-01
> >> latest
> >>
> >> $ sudo python $maasds --config=$cfg get
> >> $url/latest/meta-data/local-hostname
> >> maas-enlisting-node
> >>
> >> --
> >> Mailing list: https://launchpad.net/~maas-devel
> >> Post to     : maas-devel@xxxxxxxxxxxxxxxxxxx
> >> Unsubscribe : https://launchpad.net/~maas-devel
> >> More help   : https://help.launchpad.net/ListHelp
> >>
> >
> > Cheers,
> > --
> > Diogo M. Matsubara
> >
>
>
>
> --
> Diogo M. Matsubara
>