Is there anyway to restart an Azure classic cloud service role every interval?

Question

I'm working with an Azure cloud service (classic) that has a couple role processes. One of them is a worker that's become a little unstable after a week so I want to restart it every few days. Eventually the worker role will be made stable but in the meantime it would be nice to auto-restart it every few days if possible.

Is there a way to restart an Azure classic cloud service worker role every day or so? Programmatically or via configuration?

score 2 · Answer 1 · answered Dec 18 '18 at 08:59

2

Absolutely Yes, there are two ways to restart an Azure classic Cloud Service role instance via triggered programmatically per an interval.

Call the REST API Reboot Role Instance with a crontab trigger in programming
You can restart these Virtual Machines of the role via call the REST API Virtual Machines - Restart in programming or directly use the same feature API of Azure SDK for a programming language.

answered Dec 18 '18 at 08:59

Peter Pan

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+1 I posted this question to the Microsoft forum as well and someone mentioned that Automation could be used to do this. – Mark Rogers Dec 18 '18 at 14:21

score 2 · Accepted Answer · edited Jun 20 '20 at 09:12

I asked this question on the Azure forum and on Reddit.

The first response was at the Azure Forum, Marcin said:

You can use for this purpose Azure Automation

https://learn.microsoft.com/en-us/azure/cloud-services/automation-manage-cloud-services

https://gallery.technet.microsoft.com/scriptcenter/Reboot-Cloud-Service-PaaS-b337a06d

Then on Reddit, quentech said:

You can do it with a PowerShell Workflow Runbook:

workflow ResetRoleClassic
{
    Param
    (
        [Parameter (Mandatory = $true)]
        [string]$serviceName,
        [Parameter (Mandatory = $true)]
        [string]$slot,
        [Parameter (Mandatory = $true)]
        [string]$instanceName
    )  

    $ConnectionAssetName = "AzureClassicRunAsConnection"

    # Get the connection
    $connection = Get-AutomationConnection -Name $connectionAssetName        

    # Authenticate to Azure with certificate
    Write-Verbose "Get connection asset: $ConnectionAssetName" -Verbose
    $Conn = Get-AutomationConnection -Name $ConnectionAssetName
    if ($Conn -eq $null)
    {
        throw "Could not retrieve connection asset: $ConnectionAssetName. Assure that this asset exists in the Automation account."
    }

    $CertificateAssetName = $Conn.CertificateAssetName
    Write-Verbose "Getting the certificate: $CertificateAssetName" -Verbose
    $AzureCert = Get-AutomationCertificate -Name $CertificateAssetName

    if ($AzureCert -eq $null)
    {
        throw "Could not retrieve certificate asset: $CertificateAssetName. Assure that this asset exists in the Automation account."
    }

    Write-Verbose "Authenticating to Azure with certificate." -Verbose    
    Set-AzureSubscription -SubscriptionName $Conn.SubscriptionName -SubscriptionId $Conn.SubscriptionID -Certificate $AzureCert 

    Select-AzureSubscription -SubscriptionId $Conn.SubscriptionID

    Write-Verbose "Getting $serviceName Role." -Verbose

    $results = Get-AzureRole -ServiceName $serviceName -InstanceDetails
    Write-Output $results

    Write-Verbose "Resetting Role Instance $instanceName" -Verbose

    $results = Reset-AzureRoleInstance -ServiceName $serviceName -Slot $slot -InstanceName $instanceName -Reboot    
    Write-Output $results
}

I made some minor changes to the parameters and removed the outer braces. And thus was able to use the script as is for the most part.

Is there anyway to restart an Azure classic cloud service role every interval?

2 Answers2

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