Fix “could not find any applicable instance type to scale up” for pending headroom tasks

Title

You may see a warning similar to the following that the autoscaler can’t find an applicable instance type when it tries to launch headroom:

WARN, AutoScaler - Attempt Scale Up, Task service:spotinst-headroom-task... 
is pending but could not find any applicable instance type to scale up in order to schedule the pending Task.

This happens when there aren’t enough instance types in your virtual node group to support your manual headroom configuration.

As a result, the pending headroom task can’t be scheduled.

Solution

Add more instance types to the virtual node group.
- Adding additional or larger instance types gives the autoscaler more scaling options and helps reduce costs.
- Go to the virtual node group and update the list of supported instance types.
Reduce headroom resource requirements.
- In the console, go to Ocean > Cloud clusters and select your cluster.
- Open the Virtual node groups tab and select your node group.
- Go to Advanced > Headroom and decrease the Reserve, CPU, or Memory values. Lower values make it easier for the autoscaler to match available instance types.

Outcome

After adding more instance types or adjusting resource requirements, the autoscaler can select an applicable instance type and launch the pending headroom.

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Support Hub

Product

Ocean

Visibility

Guest

URL Name

Fix-could-not-find-any-applicable-instance-type-to-scale-up-for-pending-headroom-tasks

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Case id: 00001065