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Wednesday, March 5, 2014

Topology Based Correlation using OMi

“I have to write any article to my blog, I have to get back to my audience” this is what consumes my mind during the last year. Although I hadn’t wrote any articles but I had a wonderful challenging year. From time to time, I write articles but they are always saved in the draft.

So it is the time to be back again.

I have a test lab and I had seen some messages that was generated from my domain controller but those events should be taken care by many team; supposing we are in real scenario.

I have disk capacity issue in dive C where Active Directory DIT files are stored.

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At the same time, the Active Directory team is monitoring domain controller with Active Directory related policies and they have been alerted with the below events.

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We need to tell both admins which event are root cause and which event are symptoms.

I will select the four alerts and Click on “Relate Events”

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Select the identified Root event.

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You can see now the event are categorized as root and symptoms under (C)orrelation column.

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When you open any of the events you can see the correlation on “Related Events” tab.

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What I have just done, is just manual correlation.

I have apply the same concept but with automation based on OMi topology based event correlation which Checks the events associated with Health Indicators against Topology relations as in our case we have filesystem connected with node that hosts domain controller. So if events with HI associated with FileSystem and other events with HIs associated with DomainController the can be correlated with the presence of TBEC rule as below.

I will select the events that has the HIs as below.

Note: I have selected one more event related to Node, to ensure that I will have the right topology relations

 

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Then Identified the root cause event.

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Give the Rule Name and description

 

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It is just fun to create correlation rules, and you can let your operators focus on root cause events.

Monday, December 2, 2013

Disable User Account Control in Windows Server 2012 R2

I have recently tried to install application that require UAC to be disabled, I am using Windows Server 2012 R2.

I have launched “User Account Control Settings” from the control panel and selected the lower level.

UAC

I have restarted the Windows, even that it didn’t requested but I realized that it is still disabled, so I found on one of the articles that you have to disable it manually using the registry  modification.

registry

Just change value of EnableLUA  from 1 to 0 in "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system".

restartwarning

We can use command line for not opening the registry editor by typing the command below:

reg add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system /v EnableLUA /t REG_DWORD  /d 0 /f 
 

Friday, July 27, 2012

Having Wireless Bluetooth in Windows 7

I have HP laptop and I purchased a new Bluetooth Jebra and I was trying to connect it to Windows 7 and it was connected but no sound is getting out of Jebra.

I investigated and I found that Microsoft is not supporting Wireless Bluetooth by default, you have to install vendor specific drivers.

Anyway, I found HP driver for Wireless Bluetooth in this link and  I am happy now I can listen to my Computer sound from this new Jebra.

 

Windows 7 driver.

ftp://ftp.hp.com/pub/softpaq/sp48501-49000/sp48538.exe

 

I found this file also but I did not install it but in case you need

ftp://ftp.hp.com/pub/softpaq/sp47001-47500/sp47022.exe

When pairing with Jebra,  drivers are identified automatically.

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Bluetooth details page:

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Tuesday, July 24, 2012

Creating Database on mySQL for HP OO

During HP OO installation, you will be asked for which database to use for HP OO Central.

If you choose to use mySQL

You have to Install mySQL on remote or Local machine and create the database and user that have full access to this database.

Here below are the commands needed to prepare mySQL for HP OO installation

start mySQL client

 

CREATE DATABASE dharma;

GRANT ALL ON dharma.* to dharma_user@localhost IDENTIFIED BY 'password';

The first command creates database named dharma

The second command creates user with full access to dharma db named dharma_user with password is password

 

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Thursday, May 17, 2012

Enable root access to SSH sessions in Solaris

When  Solaris 10 or 11 is installed, by default root can not login from remote machine but normal users can login and can choose to switch to admin using su or sudo.

Root users remote access is disabled on the SSH daemon SSHD level, so simple modify sshd_config file located in /etc/ssh/sshd_config

Locate a line with PermitRootLogin no and replace it with  PermitRootLogin yes

Then restart SSHD by the command below

#svcadm restart svc:/network/ssh:default

Now: you can access Solaris system with root account remotely

Wednesday, March 7, 2012

HP iLO for iPhone and iPad

HP® iLO Mobile Toolbox provides access to the console of your HP ProLiant® server from your iPhone or iPad. Since it interacts directly with the HP Integrated Lights-Out (HP iLO) chip on ProLiant servers, this mobile app gives you total control over your server at all times. It can be healthy or it can be off with a blank hard-drive. Your server only needs to be plugged in. As an IT administrator you can now fix problems and do deployments while you are on the road from almost anywhere.

iPhone Screenshot 1

Besides what remote desktop applications normally do, this app will also allow you to do the following:

  • Operate the server’s power switch
  • View and interact with the server’s startup.
  • Make BIOS configuration changes.
  • Make option ROM configuration changes.
  • Interact with the operating system as it starts.
  • Install an operating system
  • View what is on the screen if the operating system crashes

iLO Mobile Toolbox also allows to you to mount an ISO CD/DVD image via HP iLO. This ISO will show up on the server as a USB CD/DVD drive. You can boot off of it and deploy an operating system.

iPad Screenshot 3

iLO Mobile Toolbox allows you to launch HP iLO scripts and monitor progress. The scripts are staged on your web server and downloaded into this mobile app as they are run.

http://itunes.apple.com/gb/app/hp-ilo-mobile-toolbox/id497560256?mt=8&ign-mpt=uo%3D2

Wednesday, February 15, 2012