DHCP Server Database Corruption

Error on DHCP server running on Windows Server 2008 (DC)

Fix:
run cmd as administrator

• net stop dhcpserver
• cd \windows\system32\dhcp\
• jetpack dhcp.mdb temp.mdb (this copies the existing database, compacts it then copies it back to the original location.
• net start dhcpserver 

What is jetpack?

Utility to pack/defrag and run maintenance on dhcp.
Jetpack.exe is located in c:\windows\system32\

Office 2007 Pro Plus (using VLK) on Terminal Server 2008 - freeze

Installed Office 2007 Pro Plus on Terminal Server 2008 sometimes Excel will freeze on remote users and other times it will work for 2-3 weeks without a freeze.

Investigation, findings and recommendations:
Add winword, excel, etc to DEP

DEP:

• Click Start, click Run, type sysdm.cpl, and then click OK.
• On the Advanced tab, under Performance, click Settings.
• On the Data Execution Prevention tab,
• Make sure The option "Turn on DEP for all programs and services except those I select" is selected
• Example: Add: c:\Program Files (x86)\Microsoft Office\Office12\excel.exe
• Add all exe files for Outlook, word and excel.

Backup SQL Database to Disk

http://msdn.microsoft.com/es-es/library/ms191304.aspx

Nagios and Cacti Integration

Combine Nagios and Cacti

Make sure you have Ubuntu's LAMP Server installed
http://www.ubuntugeek.com/step-by-step-ubuntu-9-10-karmic-lamp-server-setup.html


Reference: http://www.ubuntugeek.com/install-and-configure-cacti-monitoring-tool-in-ubuntu-810-intrepid-ibex-server.html

Cacti - easy tutuorial http://openmaniak.com/cacti_tutorial.php

Sudo apt-get install snmp
Sudo apt-get install cacti
Sudo apt-get install rrdtool


connect to cacti to finish setup

http://hostname/cacti/

user login: admin/admin

Integration
http://theanswersquad.com/?p=212

Cacti is up and running!!

Runing Cacti on Ubuntu 9.10 Server on VirtualBox

http://localhost/cacti/

Ninja for Nagios

https://wiki.op5.org/ninja:docs:quickstart-ubuntu

Nagios backup & upgrade to latest version

INSTALL ZIP & BACKUP Nagios

Install zip
sudo apt-get install zip

Zip Nagios directory
zip -r nagiosbackup.zip /usr/local/nagios/etc/

Create backups directory
mkdir backups

Copy nagios.zip into backups directory
cp nagios.zip /backups

Verify the zip file is in the backups directory


UPGRADE NAGIOS - Download, Extract, Install, Verify, Restart

Download new nagios version
wget http://sourceforge.net/projects/nagios/files/nagios-3.x/nagios-3.2.1/nagios-3.2.1.tar.gz/download


Extract the tar ball

tar xzf nagios-3.2.1.tar.gz

cd /nagios-3.2.1/

./configure --with-command-group=nagcmd

make all

make install 

Verify configurations

/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

Restart Nagios

/etc/init.d/nagios restart