Retrieving data from Azure Monitor REST api with powershell: https://adatum.no/?p=6096

acknowledge-alerts.ps1

# alert handeling
# updating alert status

# get alerts

$alerts = Invoke-RestMethod -Method Get -Uri "https://management.azure.com/subscriptions/$subscriptionId/providers/Microsoft.AlertsManagement/alerts?api-version=2018-05-05" -Headers $headers

# fore every alert I have. get it's ID and acknowledge it.
# pay attention to the method is now POST (one can debate if this should be a PUT)
foreach ($alert in $alerts.value) {
    $alertId = $alert.id

    Invoke-RestMethod -method POST -uri "https://management.azure.com$alertId/changeState?api-version=2018-05-05&newState=Acknowledged" -Headers $headers

}

get-accessToken.ps1

# getting a token from login.microsoft.com

$tenantID = "martinehrnst.onmicrosoft.com"
$subscriptionId = ""
$myCustomAPPID = "https://management.azure.com/.default"
$ClientID = 'fc6e7910-97d9-4bea-8bff-d364ae749502'
$ClientKey = ''
$params = @{
    scope         = $myCustomAPPID;
    grant_type    = 'client_credentials';
    client_id     = $ClientId;
    client_secret = $ClientKey;
}

$AADToken = Invoke-RestMethod -Method Post -Uri "https://login.microsoftonline.com/$tenantID/oauth2/v2.0/token" -Body $params

# creating an authentication header

$headers = @{
    Authorization = "Bearer " + $AADToken.access_token
}

get-configuredAlertRules.ps1

# get current configured alert rules

# classic (old) alert rules
$classic = Invoke-RestMethod -Method Get -Uri "https://management.azure.com/subscriptions/$subscriptionId/providers/microsoft.insights/alertrules?api-version=2016-03-01" -Headers $headers

# metric alert rules
$metricRules = Invoke-RestMethod -Method Get -Uri "https://management.azure.com/subscriptions/$subscriptionId/providers/Microsoft.Insights/metricAlerts?api-version=2018-03-01" -Headers $headers

# activity log alert rules
$activityLogRules = Invoke-RestMethod -Method Get -Uri "https://management.azure.com/subscriptions/$subscriptionId/providers/microsoft.insights/activityLogAlerts?api-version=2017-04-01" -Headers $headers

get-resourceMetrics.ps1

# Getting metrics for a VM

# timespan last 24h
# formatting as sortable ISO string and adding both dates to one variable
$endTime = (get-date).ToString("s")
$startTime = (get-date).AddHours(-24).ToString("s")
$timespan = $startTime + "/" + $endTime
$metricName = "Disk Read Bytes"
$resourceId = "$subscriptionId/resourceGroups/Demo-VMs-RG/providers/Microsoft.Compute/virtualMachines/VMNAME3/" # adding as a variable to make it easier to read URI

Invoke-RestMethod -Method GET -Uri "https://management.azure.com/subscriptions/$resourceId/providers/microsoft.insights/metrics?api-version=2018-01-01&metricnames=$metricName&timespan=$timeSpan" -Headers $headers