Changing the instance hostname with a workflow/task

[cbunge]

Hey @Alex,

So you can utilize the “Configuration Phase”, which triggers calls before the payload is submitted.

1. Create this Groovy task:
   println("${spec.encodeAsJson().toString()}")

2. Put that task in a provisioning workflow under the “Configuration Phase”.

3. Deploy a new VM with that workflow selected. The configuration phase will run and task output will show the type of data you have available.

Essentially, there is a variable spec that is available in this phase. You can modify that JSON payload, and then output it.

Note, you must have your last configuration phase task only output the spec JSON, no other stdout. You must also set the Result Type of the task to “JSON”.

A few examples in the forums:

Edit Instance Configuration Before Deployment

Good morning! I’m attempting to edit a GCP instance deployment to attach a public IP in the Configuration Phase of a Workflow using Python. I feel I’m close but something is just not clicking for it to stick I think. This is my example code with the IP changed (task outputs as JSON): import json newIP="255.255.255.255" morpheus['spec']['config']['externalIpType']=newIP morpheus['spec']['server']['config']['externalIpType']=newIP morpheus['spec']['customOptions']['externalIpType']=newIP json.…

Configuration phase to modify requested instance volume information before deployment

Hello, This is a quick post to share an example configuration phase script that will enforce that the root volume goes to 50GB and then the VM deploys with two additional volumes, regardless of what a user inputs during instance provision. This was for a niche customer use-case, but I thought it might be useful for the community as another example of using the configuration phase. Script: import json configspec = morpheus['spec'] volume1 = None for volume in configspec['volumes']: if vol…

And an example PowerShell Core code I use. This:

1. Requests an IP from an IP Pool via the Morpheus API.
2. Sets a temp name on the request for the IP.
3. Updates the VM hostname based on the IP address hash.
4. Echoes out the spec JSON body to pick the changes up.

$configJson = '<%=spec.encodeAsJson().toString()%>'
$bearer = "<%=morpheus.apiAccessToken%>"
$morphUrl = '<%=morpheus.applianceUrl%>'
$ContentType = 'application/json'
$morphHeader = @{
    "Authorization" = "BEARER $bearer"
}
$poolApi = 'api/networks/pools/'
$configJson = $configJson | convertfrom-json -Depth 10
$pool = $configJson.networkInterfaces.network.pool.id

### Functions
function ipv4ToHexString($ipv4){
 
    # Validation
    $valid = $true
    $ipv4.split(".") | foreach { if([int]$_ -ge 0 -and [int]$_ -le 255) { } else { $valid = $false } }
 
    if($valid -eq $true){
 
        # Conversion
        $hexString = ""
        $hexList = @("0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f")
        $ipv4.split(".") | foreach {
            $mod = [int]$_ % 16
            $first = $hexList[(([int]$_ - $mod) / 16)]
            $second = $hexList[$mod]
            $hexString += $first+$second
        } 
        return $hexString
    }
    else{
        return $false
    }
}

#################################################################################
### Script
$tempName = get-random
$poolBody = @"
{
    "createDns": false,
    "networkPoolIp": {
      "hostname": $tempName
    }
}
"@

# Request IP
$ip = (Invoke-WebRequest -Method POST -Uri ($morphUrl + $poolApi + $pool + '/ips') -SkipCertificateCheck -Headers $morphHeader -Body $poolBody -ContentType $ContentType).content | convertfrom-json
$ip = $ip.networkPoolIp

# Generate Name Hash
$hashName = (ipv4ToHexString -ipv4 $ip.ipAddress).toUpper()
$hashName = "$hashName"

$configJson.instance.name = $hashName
$configJson.instance.hostName = $hashName

$configJson = $configJson | ConvertTo-Json -Depth 10

$spec = @"
{
    "spec": $configJson
}
"@

$spec

#spec #configurationphase