NoDelayProvisionStrategy won't provision after scaling down to 0 instances in auto scaling group about ec2-fleet-plugin HOT 10 OPEN

@cccCody Did you manage to find the cause of this?

from ec2-fleet-plugin.

I was able to get it to work for a single run by setting "Minimum Spare Size" to 1, but then when I started another build after that, it hit the issue when provisioning the first node that time. It seems like, more generally, this is an issue with scaling out shortly after scaling in.

from ec2-fleet-plugin.

We are also seeing this issue. When there are no agents available, meaning they are all scale down. The plugin won
t spin up agents at all.

In the logs it says:

Nov 22, 2023 7:02:32 PM FINE com.amazon.jenkins.ec2fleet.NoDelayProvisionStrategy
label [linux]: queueLength 1 availableCapacity 1 (availableExecutors 0 plannedCapacitySnapshot 1 additionalPlannedCapacity 0)
Nov 22, 2023 7:02:32 PM INFO com.amazon.jenkins.ec2fleet.NoDelayProvisionStrategy apply
label [linux]: No excess workload, provisioning not needed.
Nov 22, 2023 7:02:32 PM FINE com.amazon.jenkins.ec2fleet.NoDelayProvisionStrategy
label [powerful]: queueLength 1 availableCapacity 1 (availableExecutors 0 plannedCapacitySnapshot 1 additionalPlannedCapacity 0)
Nov 22, 2023 7:02:32 PM INFO com.amazon.jenkins.ec2fleet.NoDelayProvisionStrategy apply
label [powerful]: No excess workload, provisioning not needed.

I'm wondering why it actually says that there is availableCapacity when clearly there is none and no scale up is triggered.

from ec2-fleet-plugin.

I encountered a similar problem
I tried the jenkins script console

Jenkins jenkins = Jenkins.getInstance()

jenkins.getLabels().each { Label label ->
    def nodeProvisioner = label.nodeProvisioner
    def pendingLaunches = nodeProvisioner.getPendingLaunches()

     if (pendingLaunches.size() == 0) {
    	return
     }

    println("Label: ${label.name}")
    pendingLaunches.each {
        println("  Planned Node: ${it.displayName}, Executors: ${it.numExecutors}")
    }
}

Output

Label: xxx
  Planned Node: NodeName-xx, Executors: 1
  Planned Node: NodeName-xx, Executors: 1

There were no jobs running
Restarting jenkins solved it

from ec2-fleet-plugin.

I think we are running into the same issue here, with the NoDelayProvisioningStrategy. Digging around in the issues I found #149 - this one reads like a regression. Could that be?

Restarting Jenkins "fixed" the issue, but I suspect it will come back. Then I will run the script console snippet of @snowman-papa to see if we also have "stuck planned" machines.

from ec2-fleet-plugin.

I have faced the same issue on 3.2.0.

Once we have switched to ASG from SpotFleet. My SpotFleet was setup with Min = 0 and Spare = 0 and after it scaled down to 0 instance. For 1.5h it didn't scale up while jobs were waiting in queue.

I needed to increase min and spare in order it to work.

from ec2-fleet-plugin.