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May 292013
 

Below are two simple scripts which will list all of the membership of a specific Active Directory (AD) groups, using standard installed perl and perl libs, and the second to email me the results of the first script. Your system must be bound the the AD server to obtain any results.

The script is ran every week through root’s crontab to see if there have been any changes to specific AD groups and email me the results.

Below is the first script called wbgroup.pl, with an example, which takes multiple input arguments, all AD group names:

[jim@nyapdb01 ~]$ cat wbgroup.pl
#!/usr/bin/perl

use warnings;
use strict;
use User::grent qw(:FIELDS);

if (! @ARGV) {
print “\nusage: wbgroup.pl ad_group_name …\n”;
print “example: wbgroup.pl dba | dba dbas it_dba ‘unix administrators’\n\n”;
exit;
}

foreach my $GRNAME (@ARGV) {
# my $group = getgrgid(gid);
my $group = getgrnam($GRNAME);

if (!($group)) {
print “\n$GRNAME not found AD\n\n”;
next;
}

print ‘Group Name : ‘, $group->name, “\n”;
print ‘Group ID : ‘, $group->gid, “\n”;
print ‘Members : ‘, join(‘, ‘, @{$group->members}), “\n\n”;
}

exit;
[jim@nyapdb01 ~]$ wbgroup.pl dbas
Group Name : dbas
Group ID : 16777258
Members : thomas.george, linda.manfields, diane.audi

Here is the second script which emails the results of the wbgroup.pl script:

[jim@nyapdb01 ~]$ cat wbgroup_report.pl
#!/usr/bin/perl

# root’s crontab entry
# 2 1 * * 5 wbgroup_report.pl >/dev/null 2>&1

use Net::SMTP;

chomp ($Hostname = `hostname`);

my $output = `wbgroup.pl dba dbas it_dba unix_administrators ‘unix administrators’`;

$smtp = Net::SMTP->new(‘mailhost’);

$smtp->mail($ENV{USER});
$smtp->to(‘Unix_Administrators@your_company.com’);

$smtp->data();
$smtp->datasend(“To: Unix_Administrators\@your_company.com\n”);
$smtp->datasend(“From: root\@$Hostname\n”);
#$smtp->datasend(“Content-Type: text/html \n”);
$smtp->datasend(“Subject: wbgroup.pl Report\n”);
#$smtp->datasend(“MIME-Version: 1.0\n”);
$smtp->datasend(“\n”);
$smtp->datasend(“$output”);
$smtp->datasend(“\n”);
$smtp->dataend();
$smtp->quit;
[jim@nyapdb01 ~]$

Oct 102012
 

We ran into one of those situations where we had to copy the directory structure, and not the files, from one system to another on a weekly basis. We decided to use the below rsync command between the two systems:

rsync -avp –-delete -f”+ */” -f”- *” /path/to/source userid@nyapdb02:/path/to/destination/

The above rsync will only copy the directory structure, /path/to/source, which will excluding everything else, to nyapdb02 server under the /path/to/destination/ directory.

Below is a sample output:

[jim@nyapdb01 ~]$ rsync -avp -–delete -f”+ */” -f”- *” /data/cm71 cm_root@nyaqdb01:/data/cm71/
sending incremental file list
created directory /data/cm71
./

sent 3428 bytes received 555 bytes 7966.00 bytes/sec
total size is 0 speedup is 0.00

If you are running an older version of rsync, you can try either of the two below commands, one for local copy and the other from one system to another system:


rsync -avp –-delete –include=’*/’ –exclude=’*’ /path/to/source /path/to/destination/
rsync -avp –-delete –include=’*/’ –exclude=’*’ /path/to/source userid@server:/path/to/destination/

If you need more details on the rsync command, run “man rsync” from an command line.

Jul 312012
 

We are migrating off of an older SAN to a new Hitachi VSP; it’s so much fun migration backend storage for our chassis, zones and LDOMs from one SAN to another, loads of fun, especially when you don’t have an HNAS 3090 appliance which provides virtualization and such. I tried to shake the Money-Tree (read Director) in my office, no such luck. On my 2013 Wish-List.

Since the two SANs do not present the same size LUN with equal cylinders and block, we elected to make the new destination LUNs just slightly larger, by 10GB each. Normally, when we migrate LUNs it is due to space issues where we need to grow, so, increasing the size of the new LUN is SOP.

Do the normal process of presenting the new LUNs to the chassis, service domain, and then present the new LUN to the LDOM:

root@chassis37 # cfgadm –al
root@chassis37 # devfsadm –Cv
root@chassis37 # echo | format
root@chassis37 # ldm add-vdsdev /dev/rdsk/c0t60060E8016049A000001049A00000017d0s2 nyapdb01_boot2@primary-vds0
root@chassis37 # ldm add-vdisk nyapdb01_boot2 nyapdb01_boot2@primary-vds0 nyapdb01

telnet into the LDOM:

root@chassis37 # ldm ls
NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME
primary active -n-cv- UART 16 24G 7.7% 5d 23h 52m
nyapdb06 active -n—- 5005 4 32G 0.2% 4d 20h 54m
nyapdb01 active -n—- 5000 16 32G 0.1% 4d 19h 21m
nyapdb02 active -n—- 5001 16 32G 0.0% 4d 21h 21m
nyapdb03 active -n—- 5002 16 32G 2.3% 4d 21h 37m
nyapdb04 active -n—- 5003 16 32G 0.0% 4d 22h 19m
nyapdb05 active -n—- 5004 16 32G 0.0% 4d 2h 57m
nyapdb07 active -n—- 5006 16 32G 0.0% 4d 2h 57m
nyapdb08 active -n—- 5007 16 32G 0.0% 4d 2h 57m
root@chassis37 #
root@chassis37 # telnet localhost 5000

On the LDOM, verify you see the new LUN, change the partition table of the new LUN so that all cylinders are assigned to partition #0, ”root” partition, remember, do not touch partition #2. And then “label” the new LUN.

root@ nyapdb01 # echo | format
Searching for disks…done

c0d1: configured with capacity of 519.35GB

AVAILABLE DISK SELECTIONS:
0. c0d0
/virtual-devices@100/channel-devices@200/disk@0
1. c0d1
/virtual-devices@100/channel-devices@200/disk@1
Specify disk (enter its number): Specify disk (enter its number):
root@nyapdb01 #


Once the above is completed, perform the zpool migration

root@nyapdb01 # zpool replace rpool c0d0s0 c0d1s0
Make sure to wait until resilver is done before rebooting.
root@nyapdb01 # zpool status
pool: rpool
state: ONLINE
status: One or more devices is currently being resilvered. The pool will
continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
scan: resilver in progress since Mon Jul 23 16:14:33 2012
519M scanned out of 179G at 57.7M/s, 0h52m to go
519M scanned out of 179G at 57.7M/s, 0h52m to go
516M resilvered, 0.28% done
config:

NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
replacing-0 ONLINE 0 0 0
c0d0s0 ONLINE 0 0 0
c0d1s0 ONLINE 0 0 0 (resilvering)

errors: No known data errors
root@nyapdb01 #


Once the re-silvering is completed, you will now need to update the eeprom with the new “boot-device” in the LDOM and in the service domain and remove the old LUN from the service domain.

root@nyapdb01 # eeprom boot-device=’nyapdb01_boot2′
root@nyapdb01 # eeprom “use-nvramrc?=true”

Service Domain:

root@chassis37 # ldm set-var boot-device=nyapdb01_boot2 nyapdb01
root@chassis37 # ldm remove-vdisk nyapdb01_boot nyapdb01
root@chassis37 # ldm remove-vdsdev nyapdb01_boot@primary-vds0
root@chassis37 # ldm add-config initial4


I always keep a copy of the LDOM configuration in a file on the service domain in case I need to reference them:

root@chassis37 # cat nyapdb01.ldom.cfg
ldm add-domain nyapdb01
# nyapdb01_boot LUN Replace with nyapdb01_boot2 LUN
# ldm add-vdsdev /dev/rdsk/c0t60A9800064656C33685A6B4A5236622Dd0s2 nyapdb01_boot@primary-vds0
ldm add-vdsdev /dev/rdsk/c0t60060E8016049A000001049A00000017d0s2 nyapdb01_boot2@primary-vds0
ldm add-vcpu 20 nyapdb01
ldm add-mem 32G nyapdb01
ldm add-vnet linkprop=phys-state vnet0 primary-vsw0 nyapdb01
ldm add-vnet linkprop=phys-state vnet1 primary-vsw1 nyapdb01
# nyapdb01_boot LUN Replace with nyapdb01_boot2 LUN
# ldm add-vdisk nyapdb01_boot nyapdb01_boot@primary-vds0 nyapdb01
ldm add-vdisk nyapdb01_boot2 nyapdb01_boot2@primary-vds0 nyapdb01
ldm set-var auto-boot\?=true nyapdb01
ldm set-var boot-device=nyapdb01_boot nyapdb01
ldm bind-domain nyapdb01
ldm start-domain nyapdb01
root@chassis37 #

Verify all your work, and if you have the chance, reboot the LDOM just to be sure.

Ed