Public/New-DatabricksCluster.ps1
|
<#
.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: 5.5.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 $MinNumberOfWorkers autoscale is disabled. .PARAMETER CustomTags Custom Tags to set, provide hash table of tags. Example: @{CreatedBy="SimonDM";NumOfNodes=2;CanDelete=$true} .PARAMETER InitScripts Init scripts to run post creation. As array of strings - paths must be full dbfs paths. Example: "dbfs:/script/script1", "dbfs:/script/script2" .PARAMETER SparkEnvVars A hashtable 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: @{SPARK_WORKER_MEMORY="29000m";SPARK_LOCAL_DIRS="/local_disk0"} .PARAMETER Spark_conf Hashtable. Example @{"spark.speculation"=$true; "spark.streaming.ui.retainedBatches"= 5} .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 No longer used - cluster names are always unique, if a cluster exists with the name passed it will be updated .PARAMETER Update No longer used - if the cluster exists by name or id it is updated .PARAMETER PythonVersion 2 or 3 - defaults to 3. .PARAMETER ClusterLogPath DBFS Location for Cluster logs - must start with dbfs:/ Example dbfs:/logs/mycluster .PARAMETER InstancePoolId If you would like to use nodes from an instance pool set the pool id https://docs.azuredatabricks.net/user-guide/instance-pools/index.html#instance-pools .PARAMETER InputObject Pipe the contents of Get-DatabricksCluster or a json file .NOTES Author: Simon D'Morias / Data Thirst Ltd #> Function New-DatabricksCluster { [cmdletbinding()] param ( [parameter(Mandatory = $false)][string]$BearerToken, [parameter(Mandatory = $false)][string]$Region, [parameter(Mandatory = $false)][string]$ClusterName, [parameter(Mandatory = $false)][string]$SparkVersion, [parameter(Mandatory = $false)][string]$NodeType, [parameter(Mandatory = $false)][string]$DriverNodeType, [parameter(Mandatory = $false)][int]$MinNumberOfWorkers, [parameter(Mandatory = $false)][int]$MaxNumberOfWorkers, [parameter(Mandatory = $false)][int]$AutoTerminationMinutes, [parameter(Mandatory = $false)][hashtable]$Spark_conf, [parameter(Mandatory = $false)][hashtable]$CustomTags, [parameter(Mandatory = $false)][string[]]$InitScripts, [parameter(Mandatory = $false)][hashtable]$SparkEnvVars, [parameter(Mandatory = $false)][switch]$UniqueNames, [parameter(Mandatory = $false)][switch]$Update, [parameter(Mandatory = $false)][ValidateSet(2,3)] [string]$PythonVersion=3, [parameter(Mandatory = $false)][string]$ClusterLogPath, [parameter(Mandatory = $false)][string]$InstancePoolId, [parameter(ValueFromPipeline)][object]$InputObject ) [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 GetHeaders $PSBoundParameters | Out-Null $Body = @{} $ClusterArgs = @{} if ($InputObject){ if ($InputObject.cluster_id -and (!(Get-DatabricksClusters -ClusterId $InputObject.cluster_id))){ Write-Verbose "Input object contains a cluster id that does not exist - cluster will be created with a new id" $InputObject.PSObject.properties.remove('cluster_id') $Mode = "create" } elseif ($InputObject.cluster_id) { Write-Verbose "Input object contains a cluster id that exists - updating cluster" $Mode = "edit" $ClusterId = $InputObject.cluster_id # $Body['cluster_id'] = $ClusterId $ExistingClusterConfig = Get-DatabricksClusters -ClusterId $ClusterId | ConvertPSObjectToHashtable } else{ Write-Verbose "No cluster with name found - creating new cluster" $Mode = "create" } } else{ $ExistingClusterConfig = Get-DatabricksClusters | Where-Object {$_.cluster_name -eq $ClusterName}| ConvertPSObjectToHashtable if ($ExistingClusterConfig){ Write-Verbose "Cluster name exists - updating cluster" $ClusterId = $ExistingClusterConfig['cluster_id'] $Mode = "edit" $Body['cluster_id'] = $ClusterId } else{ Write-Verbose "No cluster found with this name - creating new cluster" $Mode = "create" } } $ClusterArgs['SparkVersion'] = $SparkVersion $ClusterArgs['NodeType'] = $NodeType $ClusterArgs['MinNumberOfWorkers'] = $MinNumberOfWorkers $ClusterArgs['MaxNumberOfWorkers'] = $MaxNumberOfWorkers $ClusterArgs['DriverNodeType'] = $DriverNodeType $ClusterArgs['AutoTerminationMinutes'] = $AutoTerminationMinutes $ClusterArgs['Spark_conf'] = $Spark_conf $ClusterArgs['CustomTags'] = $CustomTags $ClusterArgs['InitScripts'] = $InitScripts $ClusterArgs['SparkEnvVars'] = $SparkEnvVars $ClusterArgs['PythonVersion'] = $PythonVersion $ClusterArgs['ClusterLogPath'] = $ClusterLogPath $ClusterArgs['InstancePoolId'] = $InstancePoolId $ClusterArgs['ClusterObject'] = $InputObject $Body += GetNewClusterCluster @ClusterArgs if ($ClusterName){ $Body += @{"cluster_name"=$ClusterName} } if ($Mode -eq "create"){ $Body.Remove("cluster_source") $Response = Invoke-DatabricksAPI -Method POST -Body $Body -API "/api/2.0/clusters/create" return $Response.cluster_id } if ($Mode -eq "edit"){ $ExistingClusterConfig = RemoveClusterMeta $ExistingClusterConfig $CompareBody = RemoveClusterMeta $Body if ((HashCompare $ExistingClusterConfig $CompareBody) -gt 0){ $Response = Invoke-DatabricksAPI -Method POST -Body $Body -API "/api/2.0/clusters/edit" } else{ Write-Warning "Cluster unchanged - not deploying to prevent unnecessary restart of cluster" } return $ClusterId } } |