server: trim autoscale Windows VM hostname #11327

shwstppr · 2025-07-29T10:16:01Z

Description

Fixes #9505

Trim the generated name to take the last 15 characters.

Types of changes

Breaking change (fix or feature that would cause existing functionality to change)
New feature (non-breaking change which adds functionality)
Bug fix (non-breaking change which fixes an issue)
Enhancement (improves an existing feature and functionality)
Cleanup (Code refactoring and cleanup, that may add test cases)
build/CI
test (unit or integration test code)

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Fixes apache#9505 Signed-off-by: Abhishek Kumar <[email protected]>

codecov · 2025-07-29T10:23:54Z

Codecov Report

❌ Patch coverage is 66.66667% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 17.36%. Comparing base (7d59bfe) to head (16240b9).
⚠️ Report is 27 commits behind head on main.

Files with missing lines	Patch %	Lines
...ava/com/cloud/network/as/AutoScaleManagerImpl.java	66.66%	4 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##               main   #11327   +/-   ##
=========================================
  Coverage     17.35%   17.36%           
- Complexity    15232    15237    +5     
=========================================
  Files          5885     5886    +1     
  Lines        525618   525694   +76     
  Branches      64157    64163    +6     
=========================================
+ Hits          91225    91269   +44     
- Misses       424094   424124   +30     
- Partials      10299    10301    +2

Flag	Coverage Δ
uitests	`3.63% <ø> (ø)`
unittests	`18.40% <66.66%> (+<0.01%)`	⬆️

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Signed-off-by: Abhishek Kumar <[email protected]>

shwstppr · 2025-07-30T06:22:40Z

@blueorangutan package

blueorangutan · 2025-07-30T06:24:04Z

@shwstppr a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

blueorangutan · 2025-07-30T08:56:52Z

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ debian ✔️ suse15. SL-JID 14463

github-actions · 2025-07-31T11:58:30Z

This pull request has merge conflicts. Dear author, please fix the conflicts and sync your branch with the base branch.

weizhouapache · 2025-08-25T10:47:55Z

@shwstppr
is this ready for review ?

shwstppr · 2025-08-25T11:02:10Z

@weizhouapache yes, though I wanted to confirm if it is a good idea to use the last 15 characters of the long generated name. Not using the first 15 as they can turn out to be the same.

weizhouapache · 2025-08-25T11:18:31Z

@weizhouapache yes, though I wanted to confirm if it is a good idea to use the last 15 characters of the long generated name. Not using the first 15 as they can turn out to be the same.

@shwstppr
looks ok to me. I could not find a better solution to be honest.

is it possible the first letter is unaccepted (for example -) after the truncation ?

Signed-off-by: Abhishek Kumar <[email protected]>

DaanHoogland · 2025-08-25T13:59:12Z

server/src/main/java/com/cloud/network/as/AutoScaleManagerImpl.java

+        if (Character.isLetterOrDigit(hostName.charAt(0))) {
+            return new Pair<>(hostName, name);
+        }
+        String temp = name.substring(0, Math.max(0, name.length() - 15)).replaceAll("[^a-zA-Z0-9]", "");


edge case: all of the last 15 chars are special chars or whitespace. I think we better do a replace first and then take the last 15.

@DaanHoogland I don't think this case can happen.
The only user-defined part in the VM name is the name of the autoscale group, and we've checks for that to only contain letters, numbers and hyphen. checkAutoScaleVmGroupName` does that

Signed-off-by: Abhishek Kumar <[email protected]>

shwstppr · 2025-08-26T04:52:44Z

@blueorangutan package

blueorangutan · 2025-08-26T04:54:04Z

@shwstppr a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

blueorangutan · 2025-08-26T06:53:43Z

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ debian ✔️ suse15. SL-JID 14730

weizhouapache · 2025-08-26T07:24:20Z

server/src/main/java/com/cloud/network/as/AutoScaleManagerImpl.java

        }
-        return new Pair<>(hostName, displayName);
+        String hostName = name.substring(Math.max(0, name.length() - 15));
+        if (Character.isLetterOrDigit(hostName.charAt(0))) {


it seems digit it not supported as first char ? @shwstppr

cloudstack/server/src/main/java/com/cloud/vm/UserVmManagerImpl.java

Lines 4104 to 4109 in 1272b13

public void checkNameForRFCCompliance(String name) {

if (!NetUtils.verifyDomainNameLabel(name, true)) {

throw new InvalidParameterValueException("Invalid name. Vm name can contain ASCII letters 'a' through 'z', the digits '0' through '9', "

+ "and the hyphen ('-'), must be between 1 and 63 characters long, and can't start or end with \"-\" and can't start with digit");

}

}

server: trim autoscale Windows VM hostname

36e636a

Fixes apache#9505 Signed-off-by: Abhishek Kumar <[email protected]>

boring-cyborg bot added the component:networking label Jul 29, 2025

shwstppr added 2 commits July 30, 2025 11:11

fix

0c34a76

Signed-off-by: Abhishek Kumar <[email protected]>

fix imports

aa21706

Signed-off-by: Abhishek Kumar <[email protected]>

github-actions bot added the status:has-conflicts label Jul 31, 2025

Merge remote-tracking branch 'apache/main' into fix-autoscalewinvm

b97ef66

github-actions bot removed the status:has-conflicts label Aug 1, 2025

Merge branch 'main' into fix-autoscalewinvm

4c9de62

shwstppr marked this pull request as ready for review August 25, 2025 11:02

improve

4c9ff4c

Signed-off-by: Abhishek Kumar <[email protected]>

DaanHoogland reviewed Aug 25, 2025

View reviewed changes

return if okay

16240b9

Signed-off-by: Abhishek Kumar <[email protected]>

weizhouapache reviewed Aug 26, 2025

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server: trim autoscale Windows VM hostname #11327

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shwstppr commented Jul 29, 2025 •

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	public void checkNameForRFCCompliance(String name) {
	if (!NetUtils.verifyDomainNameLabel(name, true)) {
	throw new InvalidParameterValueException("Invalid name. Vm name can contain ASCII letters 'a' through 'z', the digits '0' through '9', "
	+ "and the hyphen ('-'), must be between 1 and 63 characters long, and can't start or end with \"-\" and can't start with digit");
	}
	}

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Description

Types of changes

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

Bug Severity

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?

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shwstppr commented Jul 30, 2025

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shwstppr commented Jul 29, 2025 •

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