13 Jul 16 CredSSP authentication problem in Powershell Remote Queries

If you receive the following error while running remote .exe files from in powershell.

UNKNOWN: WEB SERVICE STATUS [vmserver01] Connecting to remote server failed with the following error message : The WinRM client cannot process the request. CredSSP authentication is currently disabled in the client configuration. Change the client configuration and try the request again. CredSSP authentication must also be enabled in the server configuration. Also, Group Policy must be edited to allow credential delegation to the target computer. Use gpedit.msc and look at the following policy: Computer Configuration -> Administrative Templates -> System -> Credentials Delegation -> Allow Delegating Fresh Credentials.  Verify that it is enabled and configured with an SPN appropriate for the target computer. For example, for a target computer name “myserver.domain.com”, the SPN can be one of the following: WSMAN/myserver.domain.com or WSMAN/*.domain.com For more information, see the about_Remote_Troubleshooting Help topic.

Resolution:

Use below cmdlet enable CredSSP on the server by specifying Server in Role

Enable-WSManCredSSP -Role “Server”

 

for more info: https://technet.microsoft.com/en-us/library/hh849872.aspx

07 Jan 16 How to troubleshoot memory issues when executing remote Powershell queries

If you are receiving “Processing data for a remote command failed with the following error message: The WSMan provider” message from the PS Queries (e.g. on the Nagios)

All you have to do is log on the target computer, and run powershell with Administrator Rights. Then you can increase Powershell memory with below commands

You can get current memory size with get-item:

Get-Item WSMan:\localhost\Shell\MaxMemoryPerShellMB

 

And here is the command for change the value:

Set-Item WSMan:\localhost\Shell\MaxMemoryPerShellMB 250 -Force

or

winrm set winrm/config/winrs @{MaxMemoryPerShellMB=”512″}

 

 

In some cases, you need to restart the WinRM service on target system:

Restart-Service winrm

06 Jan 16 best editor for golang

I was looking for a good (and free) GoLang IDE. Then I found fully opensource LITEIDE. It supports code completion and syntax highlighting. Also has a debugger which running in background.

You can download it from below link:
http://code.google.com/p/golangide/

18 Dec 15 Catching Out Of Memory Exceptions in PowerShell

Catch [System.OutOfMemoryException]{
     bla bla bla...
 }

14 Dec 15 How to resize linux logical volume (lvm) in a virtualbox vm

I was installed Fedora VM in to 8 GB Virtual Disk (vdi) but now I need to resize disk to 16 GB

VBoxManage modifyhd “D:\VirtualBox VMs\Fedora\Fedora.vdi” –resize 16384

 

Now the linux part.

You’d have to unmount it to shrink it (which requires a LiveCD / Rescue Mode.)

1. pvresize /dev/sda2 (assuming your LVM partition is sda2. Replace as required.)
2. lvextend /dev/mapper/root -l+100%FREE  (or, whatever your root logical volume is called.)
3. resize2fs /dev/mapper/root (assuming ext2/3/4)

30 Nov 15 Installing Powershell ISE via Powershell commands

Using PowerShell

1. Open Powershell Window

1. Execute following cmdlets.

Import-Module ServerManager

Add-WindowsFeature PowerShell-ISE

Tags: powershell

29 Aug 15 raspberry pi released 5$ model raspberry pi zero!

 

 

Raspberry Pi Zero has released out this week. It’s not powerful as Raspberry Pi 2. However  specs is so good for 5$ computer.

• 1Ghz, Single-core CPU (Broadcom BCM2835 ARMv6 SoC full HD  processor)
• 512MB 400 MHz RAM
• Mini HDMI and USB On-The-Go ports
• Micro USB power
• HAT-compatible 40-pin header
• Composite video and reset headers

Comparison with a playing card

 

For more information : https://www.raspberrypi.org/blog/raspberry-pi-zero/

 

12 Aug 15 Replace a String in Multiple Files in Linux Using Grep and Sed

Example

grep -rl 'old-string' ./ | xargs sed -i 's/old-string/new-string/g'

This will search for the string ‘old-string’ in all files relative to the current directory and replace ‘old-string’ with ‘new-string’ for each occurrence of the string in each file.

28 Apr 15 How to connect Oracle DB with PowerShell

# Load the ODP assembly 
[Reflection.Assembly]::LoadFile("C:\oracle\11.2.0\client_2\odp.net\bin\4\Oracle.DataAccess.dll")|Out-Null

# 
#vars&cons
$stations =@{
"424"="Istanbul";
"421"="İzmir"
}
$dbuser="user"
$dbpasswd="password"

connect to Oracle

$constr =
"
User Id=$dbuser;
Password=$dbpasswd;
Data Source=CITIES
"
$conn= New-Object Oracle.DataAccess.Client.OracleConnection($constr)
$conn.Open()

Create a datareader for a SQL statement

$sql="select stationid
from CITIES.SWITCHPARAMETER
where switchid = '2'
"
$command = New-Object Oracle.DataAccess.Client.OracleCommand( $sql,$conn)
$reader=$command.ExecuteReader()

Write out the results

# 
while ($reader.read()) {
$stationID=$reader.GetString(0)
$stationname=$stations.Get_Item($stationID)
Write-Host
"
Station ID: $stationID ($stationname)"
}

Tags: oracle, powershell

14 Oct 14 finding last edited file on unix CLI

to find last edited file in a folder on unix CLI:

`ls -1t | head -1`

to edit the file:

more `ls -1t | head -1`