Re: Adding Ubuntu Support
Hi Brian,
The framework you need is there but Linux.pm hasn't been worked on yet. The
info at the following URL is pretty current:
http://cwiki.apache.org/confluence/display/VCL/Operating+System+Module+Interface+Specification
For the issues you mentioned, you'll need to implement 2 subroutines:
-grant_access()
-reserve()
These subs can call any other subs in the OS module or from a module it inherits
from. Once you implement these, the state modules (new.pm, reserve.pm, ...)
will bypass their calls to add users, configure ext_sshd, etc. via code like this:
reserved.pm:
if ($self->os->can("grant_access")) {
call $os->grant_access()...
}
elsif ($computer_type =~ /blade|virtualmachine/) {
call old subs out of utils.pm...
}
Your capture_prepare() and capture_start() subs will work for now, but they
should eventually be changed to a single sub named pre_capture(). Take a look
at pre_capture() in Windows_mod.pm and also the section in xCAT.pm where
pre_capture() is called. The provisioning engine's capture() sub calls
OS::pre_capture() and passes it the ending power state it desires. xCAT.pm
wants the computer to be shut down by pre_capture(), so the call is:
$self->os->pre_capture({end_state => 'off'}
Any other subs not listed on the page noted above can really be named anything
but it would be nice to try to align the sub names with Window_mod.pm. I think
it's best to work these subs out in Ubuntu.pm. Any subs which can be used by
any flavor of Linux should eventually be moved up to Linux.pm, and Ubuntu.pm
should inherit from Linux.pm.
I have begun describing the inheritance details here:
http://cwiki.apache.org/confluence/display/VCL/Operating+System+Module+Inheritance
Hope this helps,
Andy
Brian Bouterse wrote:
I've tried to add in an Ubuntu virtual machine into a VCL installation
using the latest code base and the esx.pm module. The VM gets
provisioned properly, VCL ssh's into the box, queries the public IP
properly, but fails to add the user and set their password.
I thought I could write an OS module to add the Ubuntu support, so I
created a Ubuntu.pm based on the existing Linux.pm since most of that
worked already for Ubuntu. As a reference for others, I installed this
Ubuntu.pm by doing the following modifications:
1) Insert a row into the module table with `perlpackage` equal to
'VCL::Module::OS::Ubuntu'
2) Insert a row into the OS table with `moduleid` equal to the id of the
entry from step 1 in the module table
3) Insert/Modify a row in the image table with `OSid` equal to the id of
the entry from step 2 in the OS table
Here is the log output showing what isn't working with this Ubuntu.pm
module as it manipulates an ubuntu VM:
2009-03-25 22:17:27|20858|113:13|reserved|reserved.pm:process(191)|user
acknowledged, remote IP: 76.182.122.192
2009-03-25 22:17:27|20858|113:13|reserved|reserved.pm:process(210)|blade
or virtual machine detected: virtualmachine
2009-03-25 22:17:27|20858|113:13|reserved|reserved.pm:process(264)|Linux
image detected: ubuntu
2009-03-25
22:17:27|20858|113:13|reserved|utils.pm:run_ssh_command(6691)|executing
SSH command on vcl12: /usr/sbin/useradd -u 101 -d /home/admin -m admin
-g ncsu
2009-03-25
22:17:28|20858|113:13|reserved|utils.pm:run_ssh_command(6772)|run_ssh_command
output: useradd: unknown group ncsu
2009-03-25
22:17:28|20858|113:13|reserved|utils.pm:run_ssh_command(6775)|SSH
command executed on vcl12: /usr/sbin/useradd -u 101 -d /home/admin -m
admin -g ncsu, returning (6, output)
2009-03-25
22:17:28|20858|113:13|reserved|utils.pm:run_ssh_command(6691)|executing
SSH command on vcl12: cat /etc/passwd
2009-03-25
22:17:28|20858|113:13|reserved|utils.pm:run_ssh_command(6772)|run_ssh_command
output: root:x:0:0:root:/root:/bin/bash
|20858|113:13|reserved| daemon:x:1:1:daemon:/usr/sbin:/bin/sh
|20858|113:13|reserved| bin:x:2:2:bin:/bin:/bin/sh
|20858|113:13|reserved| sys:x:3:3:sys:/dev:/bin/sh
|20858|113:13|reserved| sync:x:4:65534:sync:/bin:/bin/sync
|20858|113:13|reserved| games:x:5:60:games:/usr/games:/bin/sh
|20858|113:13|reserved| man:x:6:12:man:/var/cache/man:/bin/sh
|20858|113:13|reserved| lp:x:7:7:lp:/var/spool/lpd:/bin/sh
|20858|113:13|reserved| mail:x:8:8:mail:/var/mail:/bin/sh
|20858|113:13|reserved| news:x:9:9:news:/var/spool/news:/bin/sh
|20858|113:13|reserved| uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh
|20858|113:13|reserved| proxy:x:13:13:proxy:/bin:/bin/sh
|20858|113:13|reserved| www-data:x:33:33:www-data:/var/www:/bin/sh
|20858|113:13|reserved| backup:x:34:34:backup:/var/backups:/bin/sh
|20858|113:13|reserved| list:x:38:38:Mailing List Manager:/var/list:/bin/sh
|20858|113:13|reserved| irc:x:39:39:ircd:/var/run/ircd:/bin/sh
|20858|113:13|reserved| gnats:x:41:41:Gnats Bug-Reporting System
(admin):/var/lib/gnats:/bin/sh
|20858|113:13|reserved| nobody:x:65534:65534:nobody:/nonexistent:/bin/sh
|20858|113:13|reserved| libuuid:x:100:101::/var/lib/libuuid:/bin/sh
|20858|113:13|reserved| syslog:x:
Adding Ubuntu Support
I've tried to add in an Ubuntu virtual machine into a VCL installation using the latest code base and the esx.pm module. The VM gets provisioned properly, VCL ssh's into the box, queries the public IP properly, but fails to add the user and set their password. I thought I could write an OS module to add the Ubuntu support, so I created a Ubuntu.pm based on the existing Linux.pm since most of that worked already for Ubuntu. As a reference for others, I installed this Ubuntu.pm by doing the following modifications: 1) Insert a row into the module table with `perlpackage` equal to 'VCL::Module::OS::Ubuntu' 2) Insert a row into the OS table with `moduleid` equal to the id of the entry from step 1 in the module table 3) Insert/Modify a row in the image table with `OSid` equal to the id of the entry from step 2 in the OS table Here is the log output showing what isn't working with this Ubuntu.pm module as it manipulates an ubuntu VM: 2009-03-25 22:17:27|20858|113:13|reserved|reserved.pm:process(191)| user acknowledged, remote IP: 76.182.122.192 2009-03-25 22:17:27|20858|113:13|reserved|reserved.pm:process(210)| blade or virtual machine detected: virtualmachine 2009-03-25 22:17:27|20858|113:13|reserved|reserved.pm:process(264)| Linux image detected: ubuntu 2009-03-25 22:17:27|20858|113:13|reserved| utils.pm:run_ssh_command(6691)|executing SSH command on vcl12: /usr/ sbin/useradd -u 101 -d /home/admin -m admin -g ncsu 2009-03-25 22:17:28|20858|113:13|reserved| utils.pm:run_ssh_command(6772)|run_ssh_command output: useradd: unknown group ncsu 2009-03-25 22:17:28|20858|113:13|reserved| utils.pm:run_ssh_command(6775)|SSH command executed on vcl12: /usr/ sbin/useradd -u 101 -d /home/admin -m admin -g ncsu, returning (6, output) 2009-03-25 22:17:28|20858|113:13|reserved| utils.pm:run_ssh_command(6691)|executing SSH command on vcl12: cat / etc/passwd 2009-03-25 22:17:28|20858|113:13|reserved| utils.pm:run_ssh_command(6772)|run_ssh_command output: root:x: 0:0:root:/root:/bin/bash |20858|113:13|reserved| daemon:x:1:1:daemon:/usr/sbin:/bin/sh |20858|113:13|reserved| bin:x:2:2:bin:/bin:/bin/sh |20858|113:13|reserved| sys:x:3:3:sys:/dev:/bin/sh |20858|113:13|reserved| sync:x:4:65534:sync:/bin:/bin/sync |20858|113:13|reserved| games:x:5:60:games:/usr/games:/bin/sh |20858|113:13|reserved| man:x:6:12:man:/var/cache/man:/bin/sh |20858|113:13|reserved| lp:x:7:7:lp:/var/spool/lpd:/bin/sh |20858|113:13|reserved| mail:x:8:8:mail:/var/mail:/bin/sh |20858|113:13|reserved| news:x:9:9:news:/var/spool/news:/bin/sh |20858|113:13|reserved| uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh |20858|113:13|reserved| proxy:x:13:13:proxy:/bin:/bin/sh |20858|113:13|reserved| www-data:x:33:33:www-data:/var/www:/bin/sh |20858|113:13|reserved| backup:x:34:34:backup:/var/backups:/bin/sh |20858|113:13|reserved| list:x:38:38:Mailing List Manager:/var/list:/ bin/sh |20858|113:13|reserved| irc:x:39:39:ircd:/var/run/ircd:/bin/sh |20858|113:13|reserved| gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh |20858|113:13|reserved| nobody:x:65534:65534:nobody:/nonexistent:/bin/sh |20858|113:13|reserved| libuuid:x:100:101::/var/lib/libuuid:/bin/sh |20858|113:13|reserved| syslog:x:101:102::/home/syslog:/bin/false |20858|113:13|reserved| klog:x:102:103::/home/klog:/bin/false |20858|113:13|reserved| hplip:x:103:7:HPLIP system user,,,:/var/run/ hplip:/bin/false |20858|113:13|reserved| avahi-autoipd:x:104:112:Avahi autoip daemon,,,:/var/lib/avahi-autoipd:/bin/false |20858|113:13|reserved| gdm:x:105:113:Gnome Display Manager:/var/lib/ gdm:/bin/false |20858|113:13|reserved| pulse:x:106:115:PulseAudio daemon,,,:/var/run/ pulse:/bin/false |20858|113:13|reserved| saned:x:107:118::/home/saned:/bin/false |20858|113:13|reserved| messagebus:x:108:119::/var/run/dbus:/bin/false |20858|113:13|reserved| polkituser:x:109:120:PolicyKit,,,:/var/run/ PolicyKit:/bin/false |20858|113:13|reserved| avahi:x:110:121:Avahi mDNS daemon,,,:/var/run/ avahi-daemon:/bin/false |20858|113:13|reserved| haldaemon:x:111:122:Hardware abstraction layer,,,:/var/run/hald:/bin/false |20858|113:13|reserved| tchaw:x:1000:1000:TC Ling,,,:/home/tchaw:/bin/ bash |20858|113:13|reserved| sshd:x:112:65534::/var/run/sshd:/usr/sbin/ nologin 2009-03-25 22:17:28|20858|113:13|reserved| utils.pm:run_ssh_command(6775)|SSH command executed on vcl12: cat /etc/ passwd, returning (0, output) 2009-03-25 22:17:28|20858|113:13|reserved|utils.pm:add_user(3093)| added user account admin to vcl12 2009-03-25 22:17:28|20858|113:13|reserved| utils.pm:run_ssh_command(6691)|executing SSH command on vcl12: echo "AllowUsers admin" >> /etc/ssh/external_sshd_config 2009-03-25 22:17:28|20858|113:13|reserved| utils.pm:run_ssh_command(6772)|run_ssh_command output: none 2009-03-25 22:17:28|20858|113:13|reserved| utils.pm:run_ssh_command(6775)|SSH command executed on vcl12: echo "AllowUsers admin" >> /etc/ssh/external_sshd_config, returning (0, output) 200
