<p>I was optimizing cluster (GKE) utilization recently and 2 days ago I've noticed that my nodes are not scaling up or down. Autoscaling config map is in initialization mode:</p>
<pre><code>kubectl describe -n kube-system configmap cluster-autoscaler-status
Name:         cluster-autoscaler-status
Namespace:    kube-system
Labels:       &lt;none&gt;
Annotations:  cluster-autoscaler.kubernetes.io/last-updated: 2020-04-29 14:44:54.363091383 +0000 UTC

Data
====
status:
----
Cluster-autoscaler status at 2020-04-29 14:44:54.363091383 +0000 UTC:
Initializing
Events:  &lt;none&gt;
</code></pre>
<p>The other clusters contain proper autoscaling events. I think that I could overload cluster with the number of pods. It contains ~100 pods / node.</p>
<h1>Update 1:</h1>
<ol>
<li>What GKE version running on master?:
1.14.10-gke.27, but I thought the upgrade to 1.15.11-gke.9 would help (and will master somehow). It didn't help. We have other clusters with those same versions and pools.</li>
<li>Does it happen to any node pools or is it occurring to a specific one?:
Autoscaling config map is kind of &quot;global level&quot;, so all node pools are being affected.</li>
<li>Could you provide the pool sizes, gke-versions and autoscaling settings?</li>
</ol>
<pre><code>default  OK 1.14.10-gke.27  4 (2 per zone) custom-8-45056   Container-Optimized OS (cos)    0 - 8 nodes per zone    
preemptible8-2   OK 1.14.10-gke.27  10 (5 per zone) n1-standard-8   Container-Optimized OS (cos)    0 - 20 nodes per zone   
scalability-stable-2-cpu     OK 1.14.10-gke.27 1 (0 - 1 per zone) n1-standard-2 Container-Optimized OS (cos)    0 - 4 nodes per zone
</code></pre>
<p>Additional information:</p>
<ol>
<li>When it turned off autoscaling and turned on in every node pool, the output of <code>kubectl describe -n kube-system configmap cluster-autoscaler-status has changed</code>.</li>
<li>I thought it might happen when I was changing the settings of the: scalability-stable-2-cpu.</li>
</ol>

sacherus
<p>After 3 days it got back to normal. </p>
