Public/New-DatabricksCluster.ps1
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.SYNOPSIS Creates a new Databricks cluster .DESCRIPTION Creates a new cluster .PARAMETER BearerToken Your Databricks Bearer token to authenticate to your workspace (see User Settings in Databricks WebUI) .PARAMETER Region Azure Region - must match the URL of your Databricks workspace, example northeurope .PARAMETER SparkVersion Spark version for cluster. Example: 4.0.x-scala2.11 See Get-DatabricksSparkVersions .PARAMETER NodeType Type of worker for cluster. Example: Standard_D3_v2 See Get-DatabricksNodeTypes .PARAMETER DriverNodeType Type of Driver for cluster. Example: Standard_D3_v2. If not set it will default to $NodeType See Get-DatabricksNodeTypes .PARAMETER MinNumberOfWorkers Min number of workers for cluster that will run the job. If the same as $MaxNumberOfWorkers autoscale is disabled. .PARAMETER MaxNumberOfWorkers Max number of workers for cluster that will run the job. If the same as $MinNumberOfWorkers autoscale is disabled. .PARAMETER CustomTags Custom Tags to set, provide key value pair array as Json string. Example: '{"key": "CreatedBy", "value": "simon"}', '{"key":"Date","value":"1st Jan 2000"}' .PARAMETER InitScripts Init scripts to run post creation. Example: '{"key": "Script1", "value": "dbfs:/script/script1"}', '{"key":"Script2","value":"dbfs:/script/script2"}' .PARAMETER SparkEnvVars An object containing a set of optional, user-specified environment variable key-value pairs. Key-value pairs of the form (X,Y) are exported as is (i.e., export X='Y') while launching the driver and workers. Example: '{"key": "SPARK_WORKER_MEMORY", "value": "28000m"}', '{"key":"SPARK_LOCAL_DIRS","value":"/local_disk0"}' .PARAMETER AutoTerminationMinutes Automatically terminates the cluster after it is inactive for this time in minutes. If not set, this cluster will not be automatically terminated. If specified, the threshold must be between 10 and 10000 minutes. You can also set this value to 0 to explicitly disable automatic termination. .PARAMETER UniqueNames Switch. By default Databricks allows duplicate cluster names. By setting this switch a check will be completed to see if this cluster exists. If it does exist an error will be thrown making the script idempotent. Defaults to False. .PARAMETER Update Switch. If the cluster name exist then update the configuration to this one. Defaults to False. .PARAMETER PythonVersion 2 or 3 - defaults to 2. .NOTES Author: Simon D'Morias / Data Thirst Ltd #> Function New-DatabricksCluster { [cmdletbinding()] param ( [parameter(Mandatory = $true)][string]$BearerToken, [parameter(Mandatory = $true)][string]$Region, [parameter(Mandatory = $true)][string]$ClusterName, [parameter(Mandatory = $true)][string]$SparkVersion, [parameter(Mandatory = $true)][string]$NodeType, [parameter(Mandatory = $false)][string]$DriverNodeType, [parameter(Mandatory = $true)][int]$MinNumberOfWorkers, [parameter(Mandatory = $true)][int]$MaxNumberOfWorkers, [parameter(Mandatory = $false)][int]$AutoTerminationMinutes, [parameter(Mandatory = $false)][string]$Spark_conf, [parameter(Mandatory = $false)][string[]]$CustomTags, [parameter(Mandatory = $false)][string[]]$InitScripts, [parameter(Mandatory = $false)][string[]]$SparkEnvVars, [parameter(Mandatory = $false)][switch]$UniqueNames, [parameter(Mandatory = $false)][switch]$Update, [parameter(Mandatory = $false)][ValidateSet(2,3)] [string]$PythonVersion=2 ) [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 $InternalBearerToken = Format-BearerToken($BearerToken) $Region = $Region.Replace(" ","") $Mode = "create" $Body = @{"cluster_name"=$ClusterName} If ($UniqueNames) { $ClusterId = (Get-DatabricksClusters -Bearer $BearerToken -Region $Region | Where-Object {$_.cluster_name -eq $ClusterName}) if ($ClusterId){ if ($Update){ $Mode = "edit" $Body['cluster_id'] = $ClusterId.cluster_id Write-Warning "Cluster already exists - it will be updated to this configuration" } else { Write-Error "Cluster with name $ClusterName already exists. Change name or remove -UniqueNames" return } } } $Body['spark_version'] = $SparkVersion $Body['spark_conf'] = $Spark_conf | ConvertFrom-Json $Body['node_type_id'] = $NodeType If ($PSBoundParameters.ContainsKey('DriverNodeType')) { $Body['driver_node_type_id'] = $DriverNodeType } If ($MinNumberOfWorkers -eq $MaxNumberOfWorkers){ $Body['num_workers'] = $MinNumberOfWorkers } else { $Body['autoscale'] = @{"min_workers"=$MinNumberOfWorkers;"max_workers"=$MaxNumberOfWorkers} } If ($PSBoundParameters.ContainsKey('CustomTags')) { If ($CustomTags.Count -eq 1) { $CustomTags += '{"DummyKey":"1"}' } $CustomTags2 = $CustomTags | ConvertFrom-Json $Body['custom_tags'] = $CustomTags2 } If ($PSBoundParameters.ContainsKey('InitScripts') -and (!($InitScripts -eq $null))) { If ($InitScripts.Count -eq 1) { $InitScripts += '{"DummyKey":"1"}' } $InitScripts2 = $InitScripts | ConvertFrom-Json $Body['init_scripts'] = $InitScripts2 } If ($PSBoundParameters.ContainsKey('AutoTerminationMinutes')) {$Body['autotermination_minutes'] = $AutoTerminationMinutes} If ($PythonVersion -eq 3){ $SparkEnvVars += '{"key":"PYSPARK_PYTHON","value":"/databricks/python3/bin/python3"}' } If ($SparkEnvVars.Count -gt 0) { If ($SparkEnvVars.Count -eq 1) { $SparkEnvVars += '{"DummyKey":"1"}' } $SparkEnvVars2 = $SparkEnvVars | ConvertFrom-Json $Body['spark_env_vars'] = $SparkEnvVars2 } Try { $BodyText = $Body | ConvertTo-Json -Depth 10 $BodyText = Remove-DummyKey($BodyText) Write-Verbose $BodyText Invoke-RestMethod -Method Post -Body $BodyText -Uri "https://$Region.azuredatabricks.net/api/2.0/clusters/$Mode" -Headers @{Authorization = $InternalBearerToken} } Catch { Write-Output "StatusCode:" $_.Exception.Response.StatusCode.value__ Write-Output "StatusDescription:" $_.Exception.Response.StatusDescription Write-Error $_.ErrorDetails.Message } } |