Install nagios client on a remote windows server

The script will install Nagios client to a remote server. It copies the MSI and the INI file to the remote computer's C drive and then executes it. Once the execution is completed, it will copy the "nsclient.ini" file to the installed folder.

Pre-Requisites:

- The servers are to be domain joined.

- Powershell remoting to be enabled on both servers.

Next Steps:

You can enhance the script, that accepts server list and executes against all the servers.

Tested on: Windows Server 2012 R2

Note: You may have to edit the script if you are changing the name of the MSI file. The script uses: NSCP-0.4.4.19-x64.msi

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<#
AUTHOR:
Manjunath Rao

DESCRIPTION: 
This script will install Nagios client in a remote computer

PARAMETERS:
Nagios_MSI_File_Path --> Absolute file path for NSCP-0.4.4.19-x64.msi
Nagios_INI_File_Path --> Absolute file path for nsclient.ini
PrivateIP --> Private IP address of the remote server. If private IP does not work, use HOSTNAME of the remote computer.

PRE-REQUISITES:
This script expects that the servers are to be domain joined with a stable network connection.

EXAMPLE:
.\install_nagios.ps1 -Nagios_MSI_File_Path "C:\IMI_Tools\IM_tls\IM_tls\Nagios for windows\NSCP-0.4.4.19-x64.msi" -Nagios_INI_File_Path "C:\IMI_Tools\IM_tls\IM_tls\Nagios for windows\nsclient.ini" -PrivateIP NG-SERVER-1

#>

param(
    [Parameter (Mandatory = $true)][String]$Nagios_MSI_File_Path,
    [Parameter (Mandatory = $true)][String]$Nagios_INI_File_Path,
    [Parameter (Mandatory = $true)][String]$PrivateIP
)

#$ErrorActionPreference = 'silentlycontinue'

# Setting up the log file
$Loc = Get-Location
$Date = Get-Date -format yyyyMMdd_hhmmsstt
$logfile = $Loc.path + “\log_”+"$PrivateIP" + "_" + $Date + “.txt”
Write-Host 'The log file path: ' $logfile -ForegroundColor Green

####### Function to write informationn to log file #######
function log($string, $color){

    if ($Color -eq $null) {$color = “white”}
    write-host $string -foregroundcolor $color
    $temp = “: ” + $string
    $string = Get-Date -format “yyyy.MM.dd hh:mm:ss tt”
    $string += $temp
    $string | out-file -Filepath $logfile -append
}


function install_nagios() {

    log "Checking if the input paths for NSCP-0.4.4.19-x64.msi and nsclient.ini exists" -color cyan

    if(!(Test-Path $Nagios_MSI_File_Path)) {
        log "Absolute path for NSCP-0.4.4.19-x64.msi is incorrect. Please provide the correct path and retry. Exiting the script" -color red
        exit
    }

    if(!(Test-Path $Nagios_INI_File_Path)) {
        log "Absolute path for nsclient.ini is incorrect. Please provide the correct path and retry. Exiting the script" -color red
        exit
    }

    log "We are installing Nagios client on mentioned server: " -color cyan

    $destination_path = "\\"+ $PrivateIP + "\c$\"

    # Enabling trust between this server and the remote server
    log "Enabling trust between this server and the remote server" -color cyan
    Set-Item WSMan:\localhost\Client\TrustedHosts –Value $PrivateIP -Force
    Get-Item WSMan:\localhost\Client\TrustedHosts |Format-List

    log "Copying NsClient MSI file from current server to remote server"
    copy-item -Path $Nagios_MSI_File_Path -Destination $destination_path

    log "Copying nsclient.ini from curent server to remote server"
    Copy-Item -Path $Nagios_INI_File_Path -Destination $destination_path

    <#
    log "Creating the destination Nagios MSI file Path"
    # Creating the destination Nagios MSI file Path
    $nagios_msi_file_name_array = $Nagios_MSI_File_Path.Split("\")
    $nagios_msi_file_name = $nagios_msi_file_name_array[-1]
    $destination_nagios_msi_file_path = $destination_path + $nagios_msi_file_name

    log "Creating the destinaton Nagios INI File"
    # Creating the destinaton Nagios INI File
    $nagios_ini_file_name_array = $Nagios_INI_File_Path.Split("\")
    $nagios_ini_file_name = $nagios_ini_file_name_array[-1]
    $destination_nagios_ini_file_path = $destination_path + $nagios_ini_file_name
    #>

    
    log "Executing Invoke-Command cmdlet to install nagios client" -color cyan
    $service_result = invoke-command -computername $PrivateIP -ScriptBlock { 
        # Silent installation of Nsclient MSI file
        powershell.exe msiexec /quiet /i "C:\NSCP-0.4.4.19-x64.msi"

        # Copying the nsclient.ini file to the installed directory
        copy-item -Path "c:\nsclient.ini" -Destination "C:\Program Files\NSClient++\"

        # Confirming if the nscp client is running
        get-service -name nscp | select status, name
        
    }

    log "Below is the status of nscp client:" -color cyan
    log "------------------------------------" -color cyan
    log $service_result

    

}

# Calling function
install_nagios

<# 
AUTHOR: 
Manjunath Rao 
 
DESCRIPTION:  
This script will install Nagios client in a remote computer 
 
PARAMETERS: 
Nagios_MSI_File_Path --> Absolute file path for NSCP-0.4.4.19-x64.msi 
Nagios_INI_File_Path --> Absolute file path for nsclient.ini 
PrivateIP --> Private IP address of the remote server. If private IP does not work, use HOSTNAME of the remote computer. 
 
PRE-REQUISITES: 
This script expects that the servers are to be domain joined with a stable network connection. 
 
EXAMPLE: 
.\install_nagios.ps1 -Nagios_MSI_File_Path "C:\IMI_Tools\IM_tls\IM_tls\Nagios for windows\NSCP-0.4.4.19-x64.msi" -Nagios_INI_File_Path "C:\IMI_Tools\IM_tls\IM_tls\Nagios for windows\nsclient.ini" -PrivateIP NG-SERVER-1 
 
#> 
 
param( 
    [Parameter (Mandatory = $true)][String]$Nagios_MSI_File_Path, 
    [Parameter (Mandatory = $true)][String]$Nagios_INI_File_Path, 
    [Parameter (Mandatory = $true)][String]$PrivateIP 
) 
 
#$ErrorActionPreference = 'silentlycontinue' 
 
# Setting up the log file 
$Loc = Get-Location 
$Date = Get-Date -format yyyyMMdd_hhmmsstt 
$logfile = $Loc.path + “\log_”+"$PrivateIP" + "_" + $Date + “.txt” 
Write-Host 'The log file path: ' $logfile -ForegroundColor Green 
 
####### Function to write informationn to log file ####### 
function log($string, $color){ 
 
    if ($Color -eq $null) {$color = “white”} 
    write-host $string -foregroundcolor $color 
    $temp = “: ” + $string 
    $string = Get-Date -format “yyyy.MM.dd hh:mm:ss tt” 
    $string += $temp 
    $string | out-file -Filepath $logfile -append 
} 
 
 
function install_nagios() { 
 
    log "Checking if the input paths for NSCP-0.4.4.19-x64.msi and nsclient.ini exists" -color cyan 
 
    if(!(Test-Path $Nagios_MSI_File_Path)) { 
        log "Absolute path for NSCP-0.4.4.19-x64.msi is incorrect. Please provide the correct path and retry. Exiting the script" -color red 
        exit 
    } 
 
    if(!(Test-Path $Nagios_INI_File_Path)) { 
        log "Absolute path for nsclient.ini is incorrect. Please provide the correct path and retry. Exiting the script" -color red 
        exit 
    } 
 
    log "We are installing Nagios client on mentioned server: " -color cyan 
 
    $destination_path = "\\"+ $PrivateIP + "\c$\" 
 
    # Enabling trust between this server and the remote server 
    log "Enabling trust between this server and the remote server" -color cyan 
    Set-Item WSMan:\localhost\Client\TrustedHosts –Value $PrivateIP -Force 
    Get-Item WSMan:\localhost\Client\TrustedHosts |Format-List 
 
    log "Copying NsClient MSI file from current server to remote server" 
    copy-item -Path $Nagios_MSI_File_Path -Destination $destination_path 
 
    log "Copying nsclient.ini from curent server to remote server" 
    Copy-Item -Path $Nagios_INI_File_Path -Destination $destination_path 
 
    <# 
    log "Creating the destination Nagios MSI file Path" 
    # Creating the destination Nagios MSI file Path 
    $nagios_msi_file_name_array = $Nagios_MSI_File_Path.Split("\") 
    $nagios_msi_file_name = $nagios_msi_file_name_array[-1] 
    $destination_nagios_msi_file_path = $destination_path + $nagios_msi_file_name 
 
    log "Creating the destinaton Nagios INI File" 
    # Creating the destinaton Nagios INI File 
    $nagios_ini_file_name_array = $Nagios_INI_File_Path.Split("\") 
    $nagios_ini_file_name = $nagios_ini_file_name_array[-1] 
    $destination_nagios_ini_file_path = $destination_path + $nagios_ini_file_name 
    #> 
 
     
    log "Executing Invoke-Command cmdlet to install nagios client" -color cyan 
    $service_result = invoke-command -computername $PrivateIP -ScriptBlock {  
        # Silent installation of Nsclient MSI file 
        powershell.exe msiexec /quiet /i "C:\NSCP-0.4.4.19-x64.msi" 
 
        # Copying the nsclient.ini file to the installed directory 
        copy-item -Path "c:\nsclient.ini" -Destination "C:\Program Files\NSClient++\" 
 
        # Confirming if the nscp client is running 
        get-service -name nscp | select status, name 
         
    } 
 
    log "Below is the status of nscp client:" -color cyan 
    log "------------------------------------" -color cyan 
    log $service_result 
 
     
 
} 
 
# Calling function 
install_nagios