Monday, July 23, 2012

How to add a domain user to a sudo group in linux

First you must add your linux in to a windows AD, once it is done, login as root or user that is in wheel group.


Execute this command visudo, that will open etc/sudoers file. if you do vi /etc/sudoers vi will give you an permission error. So besure to use visudo without space.


Find a line that looks like this

%wheel     ALL=(ALL)     ALL

put this just below that like (Yes with \\, in linux \ is an escape charator, so we have to put two \ instead of  one \) this...

domain\\username   ALL=(ALL)

example:   If you want to add a user test1 who is in world.com

world\\test1 ALL=(ALL)

and this is an option you can put just behind the line, so it will not ask for a password if you do sudo. a bit of security issue but if you built a test linux machine gotta do lots of sudo, ye it can be your best friend.

NOPASSWD:  ALL

example: world\\test1 ALL=(ALL)  NOPASSWD: ALL


That is all.



Installing Exchange 2013 preview - quick and dirty

What you will need, a domain controller, a windows server 2008 or R2 or 2012 and some pre-req items

I will use an Windows 2008 R2 x64 Enterprise version for this demo.

Download a Exchange server 2013 preview from here : http://www.microsoft.com/exchange/en-us/exchange-preview.aspx

All Exchange 2010 servers in the organization need to be at Exchange 2010 SP3 orlater, and SP3 is not available at this time (2012, July), so if you try to install it on the current Exchange 2010, you won't be able to install it at all.


Pre-req items list

1. Add RSAT-ADDS

On powershell run

Import-Module ServerManager

Add-WindowsFeature RSAT-ADDS

2. Install IIS 7

On powershell run

Import-Module ServerManager\

Add-WindowsFeature Desktop-Experience, NET-Framework, NET-HTTP-Activation, RPC-over-HTTP-proxy, RSAT-Clustering, RSAT-Web-Server, WAS-Process-Model, Web-Asp-Net, Web-Basic-Auth, Web-Client-Auth, Web-Digest-Auth, Web-Dir-Browsing, Web-Dyn-Compression, Web-Http-Errors, Web-Http-Logging, Web-Http-Redirect, Web-Http-Tracing, Web-ISAPI-Ext, Web-ISAPI-Filter, Web-Lgcy-Mgmt-Console, Web-Metabase, Web-Mgmt-Console, Web-Mgmt-Service, Web-Net-Ext, Web-Request-Monitor, Web-Server, Web-Stat-Compression, Web-Static-Content, Web-Windows-Auth, Web-WMI


3. Install hotfix 2619234

http://support.microsoft.com/kb/2619234


4. Microsoft Unified Communications Managed API 4.0, Core Runtime 64-bit.

http://go.microsoft.com/fwlink/?LinkId=238142

5. KB974405

http://support.microsoft.com/kb/974405


6. Microsoft Office 2010 Filter Packs - Version 2.0

http://go.microsoft.com/fwlink/?LinkID=191548

7. Microsoft Office 2010 Filter Packs - Service Pack 1

http://www.microsoft.com/download/en/details.aspx?id=26604



8. Install Windows Media Encoder

http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.LonghornWmvcoreNotInstalled.aspx


9. .Net framework 4.0
http://www.microsoft.com/en-us/download/details.aspx?id=17718

10. .Net framework 4.5

http://msdn.microsoft.com/en-us/library/5a4x27ek(v=VS.110).aspx

11. Windows Management Framework 3.0

http://www.microsoft.com/en-us/download/details.aspx?id=29939

12. Exchange Server 2013 Preview isn't compatible with Microsoft Visual C++ 11 Beta Redistributable (x64) 11.0.050531. Please uninstall it before you install Exchange 2013 Preview.
Uninstall Microsoft Visual C++ 11 Beta using "programs and feafures"



Installation steps

1. Install all pre-req items, and reboot.

2. Fully patch the new windows 2008 r2 server.

3. Run the exchange-x64.exe, it will ask a place to extract the files.

4. Choose a folder to extract.


5. Go to the folder and execute the setup.exe file

6. On Check for updates, I chose not to check, Next






7. Copying files, Next




8. Introduction screen, Next




9. Accept the license term, Next




10. Error reporting, choose no, and Next




11. On checking required software, Next




12. Installation space and location, Next





13. On Malware protection settings, select Yes to disable it and Next





14. On configure client access server, select , "this client server role will be internet-facing" and fill out the domain information




15. On customer experience improvement program window, click Next.






16. Readiness checks, wait until it finishes its task.





17, Once all check got passed, Next


18, setup will start



19, Installed



If you get "The WS-Management service does not support the request" error when you open the exchange powershell execute the command below on command prompt

%SystemDrive%\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe -ir -enable

and reset the  IIS by runnig

IISReset



2013 OWA with new office 2013 logo




First look of OWA 2013

 

Options page


Installed Apps page






Wednesday, July 18, 2012

CentOS 6 : Using DVD/CD as your local repo #2

Put the dvd in to the cdrom, and we need to mount the dvd.
#mkdir /media/CentOS_6.2_Final

after that mount the dvd with this command:

#mount /dev/cdrom /media/CentOS_6.2_Final
and then Edit CentOS-Media.repo
vi /etc/yum.repos.d/CentOS-Media.repo

You will see something like this

baseurl=file:///media/CenOS/
       and blah blah

Change the "file=:///media/CentOS" to "file=:///media/CentOS_6.2_Final"


Save the file


and install package

yum --disablerepo=\* --enablerepo=c6-media

for example to install perl

yum --disablerepo=\* --enablerepo=c6-media install perl