自動部署到F5負載平衡環境

Question

我們目前正在使用TeamCity進行CI構建，我們也嘗試設置自動化部署。

我目前正試圖部署的項目是一個位於F5負載平衡器下的Windows服務。在未來，我們還希望自動部署我們也位於F5下的IIS網站。

從TeamCity中，我們可以執行PowerShell腳本來取消所有服務器上的Windows服務，將文件推送到它，然後重新安裝服務。

但是，我很難弄清楚如何處理負載平衡器。我們希望一次禁用1個節點，注意所有連接的丟棄，然後部署我們的代碼並使節點恢復。

這看起來似乎是一個非常普遍的問題，但我卻發現了關於如何去做的驚人的小信息。

謝謝！

回答

感謝喬納森·羅西爲的iControl PowerShell命令！

對於其他用戶的緣故，這裏是關停，監測連接砸，推碼，然後通過PowerShell腳本

這些腳本工作，你義無反顧的F5負載均衡器的樣品首先必須從安裝在回答以下

#PULL IN OUR F5 UTILITY FUNCTIONS 
. .\F5Functions.ps1 


#DEFINE LOGIC TO DEPLOY CODE TO A NODE THAT HAS ALREADY BEEN REMOVED FROM THE LOAD BALANCER 
function Deploy(
    [F5Node]$Node 
) 
{ 
    Write-Host "Deploying To: "$Node.Name 
    #TODO: Remotely shut down services, push code, start back up services 
} 


#DEFINE NODES 
$nodes = @() 
$nodes += New-Object F5Node -ArgumentList @("TestNode1", "1.1.1.1") 
$nodes += New-Object F5Node -ArgumentList @("TestNode2", "1.1.1.2") 

#DEPLOY 
DeployToNodes -Nodes $nodes -F5Host $F5Host -F5UserName $F5UserName -F5Password $F5Password 

提供的鏈接F5的iControl cmdlet和這裏是可重複使用的F5Functions腳本

#Load the F5 powershell iControl snapin 
Add-PSSnapin iControlSnapin; 

Write-Host "Imported F5 function!!!" 

Add-Type @' 
    public class F5Node 
    { 
     public F5Node(string name, string address){ 
      Address = address; 
      Name = name; 
     } 
     public string Address {get;set;} 
     public string Name {get;set;} 
     public string QualifiedName {get{return "/Common/" + Name;}} 
    } 
'@ 

function DeployToNodes(
    [string]$F5Host = $(throw "Missing Required Parameter"), 
    [string]$F5UserName = $(throw "Missing Required Parameter"), 
    [string]$F5Password = $(throw "Missing Required Parameter"), 
    [F5Node[]]$Nodes = $(throw "Missing Required Parameter"),  
    [int]$MaxWaitTime = 300 #seconds... defaults to 5 minutes 
){ 
    Authenticate -F5Host $F5Host -F5UserName $F5UserName -F5Password $F5Password 

    foreach($node in $Nodes){ 
     DisableNode -Node $node 

     WaitForConnectionsToDrop -Node $node -MaxWaitTime $MaxWaitTime 

     #Assume the Script that included this script defined a Deploy Method with a Node param 
     Deploy -Node $node  

     EnableNode -Node $node 
    } 
} 

function Authenticate(
    [string]$F5Host = $(throw "Missing Required Parameter"), 
    [string]$F5UserName = $(throw "Missing Required Parameter"), 
    [string]$F5Password = $(throw "Missing Required Parameter") 
) 
{ 
    Write-Host "Authenticating to F5..." 
    Initialize-F5.iControl -HostName $F5Host -Username $F5UserName -Password $F5Password 
    Write-Host "Authentication Success!!!" 
} 

function ParseStatistic(
     [iControl.CommonStatistic[]]$StatsCollection = $(throw "Missing Required Parameter"), 
     [string]$StatName = $(throw "Missing Required Parameter") 
    ) 
{ 
    for($i=0; $i -lt $StatsCollection.Count; $i++){ 
     if($StatsCollection[$i].type.ToString() -eq $StatName){ 
      return $StatsCollection[$i].value.low 
      break 
     }      
    } 
} 

function GetStats(
     [F5Node]$Node = $(throw "Missing Required Parameter") 
    ) 
{ 
    $arr = @($Node.QualifiedName) 
    $nodeStats = (Get-F5.iControl).LocalLBNodeAddressV2.get_statistics($arr) 
    return $nodeStats.statistics.statistics 

    #foreach($memberStats in $poolStats.statistics){ 
    # if($memberStats.member.address.ToString() -eq $Node -and $memberStats.member.port -eq $Port){ 
    #  return $memberStats.statistics 
    # } 
    #} 
} 

function GetStatistic(
     [F5Node]$Node = $(throw "Missing Required Parameter"), 
     [string]$StatName = $(throw "Missing Required Parameter") 
    ) 
{ 
    $stats = GetStats -Node $Node 
    $stat = ParseStatistic -StatsCollection $stats -StatName $StatName 

    return $stat 
} 

function DisableNode(
    [F5Node]$Node = $(throw "Missing Required Parameter") 
) 
{  
    Disable-F5.LTMNodeAddress -Node $Node.Address 
    Write-Host "Disabled Node '$Node'" 
} 

function EnableNode(
    [F5Node]$Node = $(throw "Missing Required Parameter") 
) 
{ 
    Enable-F5.LTMNodeAddress -Node $Node.Address 
    Write-Host "Enabled Node '$Node'" 
} 

function WaitForConnectionsToDrop(
    [F5Node]$Node = $(throw "Missing Required Parameter"), 
    [int]$MaxWaitTime = 300 
) 
{ 
    $connections = GetCurrentConnections -Node $Node 

    $elapsed = [System.Diagnostics.Stopwatch]::StartNew(); 
    while($connections -gt 0 -and $elapsed.ElapsedMilliseconds -lt ($MaxWaitTime * 1000)){   

     Start-Sleep -Seconds 10 

     $connections = GetCurrentConnections -Node $Node 
    } 
} 

function GetCurrentConnections(
    [F5Node]$Node = $(throw "Missing Required Parameter") 
) 
{ 
    $connections = GetStatistic -Node $Node -StatName "STATISTIC_SERVER_SIDE_CURRENT_CONNECTIONS" 
    $name = $Node.Name + ":" + $Node.Address 
    Write-Host "$connections connections remaining on '$name'" 
    return $connections 
} 

Answer 1

我還沒有使用它，但是你看過了由F5提供的F5 iControl Web服務API和F5 iControl PowerShell cmdlets。自從2007開始PowerShell cmdlet已經出現，可以從F5 DevCentral下載。

它看起來像有Enable-Member和Disable-Member cmdlet，你可以使用。