IT Knowledge Base

Technical Repository

HowTo: Clear out EMC RecoverPoint Upgrade ISO from the Appliance

Login to the EMC RecoverPoint Appliances as boxmgmt and Run the following signed script on each of the RPA that says an ISO is already present: NzUyZWZhNDAyNTdiYTJhMmMyODgxYjcxN2UxOTVhNjcKdW5saW1pdGVkCm5vdF9yZXN0cmljdGVk ClRoZSBpZCBvZiB0aGUgc2NyaXB0IGlzOjI0NjU4ClJlbW92ZSBJU08gZmlsZXMKQnJpYW4KIyEv YmluL3NoIAojSVNPIFNjcmlwdAojUmVtb3ZlcyBJU08gZmlsZXMKcm0gL2hvbWUva29zL2lzby8q Lmlzbwo= # The ISO has now been removed from the RPA’s and the upgrade can continue.

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HowTo: MySQL thread_cache_size Tuning

MySQL> SHOW GLOBAL STATUS LIKE ‘Connections’; +—————+——-+ | Variable_name | Value | +—————+——-+ | Connections | 8608 | +—————+——-+ 1 row in set (0.01 sec) MySQL> SHOW GLOBAL STATUS LIKE ‘Threads_created’; +—————–+——-+ | Variable_name | Value | +—————–+——-+ | Threads_created | 102 | +—————–+——-+ 1 row in set (0.00 sec) MySQL> SHOW GLOBAL STATUS LIKE […]

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HowTo: Enable Linux ZRAM Compression

ZRAM compression ( compressed swap residing in ram / over allocating memory ) A successor to compcache, zram is fully integrated in the Linux kernel and uses lzo compression. Compress memory on the fly to reduce swapping. Uses a small amount of cpu, however the reduced i/o usage more than makes up for this. Note: We […]

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HowTo: Configure Windows Remote Management Service to allow HTTP and Basic Authentication

Run the following command to set the default WinRM configuration values. winrm quickconfig (Optional) Run the following command to check whether a listener is running, and verify the default ports. winrm e winrm/config/listener Enable basic authentication on the WinRM service. Run the following command to check whether basic authentication is allowed. winrm get winrm/config Run […]

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HowTo: Inject Cisco UCS Drivers into Windows 2012 R2 ISO

dism /get-wiminfo /wimfile:”./Workspace\Windows 2012 R2\sources\boot.wim” dism /Mount-Wim /WimFile:”./Workspace\Windows 2012 R2\sources\boot.wim” /Index:2 /MountDir:”./Workspace\Mount” dism /image:”./Workspace\Mount” /Add-Driver /driver:”./Workspace\Drivers” -Recurse dism /unmount-wim /mountdir:”./Workspace\Mount” /commit dism /get-wiminfo /wimfile:”./Workspace\Windows 2012 R2\sources\install.wim” dism /Mount-Wim /WimFile:”./Workspace\Windows 2012 R2\sources\install.wim” /Index:4 /MountDir:”./Workspace\Mount” dism /image:”./Workspace\Mount” /Add-Driver /driver:”./Workspace\Drivers” -Recurse dism /unmount-wim /mountdir:”./Workspace\Mount” /commit

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HowTo: Fix – SCVMM doesn’t show hosts performance

The issue was that in the SCVMM console, the performance view was static, and didn’t show any changes at all. Open a command prompt (Run as Administrator) and fire the following commands: 1) Lodctr /R (this will rebuild the perf counters from system backup store) 2) Winmgmt /resyncperf (this will register the system performance libraries […]

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Howto: Office 365 – Remove Users Profile Pictures

The global administrator can remove the photos for the users with PowerShell in Office 365. For more detailed information, you can refer to the steps below: 1. Connect Windows PowerShell to the Service: http://help.outlook.com/en-us/140/cc952755.aspx 2. Run the following command to remove the photos for the users: Remove-UserPhoto TestUser11. Here is a screenshot about removing photo […]

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HowTo: Windows 2012 R2 Cluster Aware Updating – Enable PowerShell Remote Shutdown

Error when running the Cluster Updating Readiness Analyzer Error: Rule ID: 9 Title: A firewall rule that allows remote shutdown should be enabled on each node in the failover cluster Result: Error Problem: One or more failover cluster nodes do not have a firewall rule enabled that allows remote shutdown Impact: Cluster-Aware Updating may not […]

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HowTo: Run a full directory synchronization with Office 365

The first synchronization with DirSync is a full synchronization. Then all others synchronizations are delta synchronizations and are scheduled every 3 hours. Open the Registry Editor and edit the following key: HKEY_LOCALMACHINE\Software\Microsoft\MSOLCoExistence Change FullSyncNeeded value to 1. Open powershell and run: Import-Module DirSync Start-OnlineCoexistenceSync

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HowTo: Powershell – Enable Active Directory Inheritance on all objects

Import-Module ActiveDirectory $users = Get-ADUser -ldapfilter “(objectclass=user)” -searchbase “ou=Domain Users,dc=DOMAIN,dc=CORP” ForEach($user in $users) { # Binding the users to DS $ou = [ADSI](“LDAP://” + $user) $sec = $ou.psbase.objectSecurity if ($sec.get_AreAccessRulesProtected()) { $isProtected = $false ## allows inheritance $preserveInheritance = $true ## preserver inhreited rules $sec.SetAccessRuleProtection($isProtected, $preserveInheritance) $ou.psbase.commitchanges() Write-Host “$user is now inheriting permissions”; } else […]

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