<p>Installed Prometheus with:</p>

<p><code>helm install --name promeks --set server.persistentVolume.storageClass=gp2 stable/prometheus</code></p>

<p>Only saw 7 node-exporter pods created but there are 22 nodes.</p>

<p><code>$ kubectl get ds promeks-prometheus-node-exporter</code></p>

<pre><code>NAME                               DESIRED   CURRENT   READY     UP-TO-DATE   AVAILABLE   NODE SELECTOR   AGE
promeks-prometheus-node-exporter   22        7         7         7            7           &lt;none&gt;          11d
</code></pre>

<p><code>$ kubectl describe ds promeks-prometheus-node-exporter</code></p>

<pre><code>$ kubectl describe ds promeks-prometheus-node-exporter
Name:           promeks-prometheus-node-exporter
Selector:       app=prometheus,component=node-exporter,release=promeks
Node-Selector:  &lt;none&gt;
Labels:         app=prometheus
                chart=prometheus-7.0.2
                component=node-exporter
                heritage=Tiller
                release=promeks
Annotations:    &lt;none&gt;
Desired Number of Nodes Scheduled: 22
Current Number of Nodes Scheduled: 20
Number of Nodes Scheduled with Up-to-date Pods: 20
Number of Nodes Scheduled with Available Pods: 20
Number of Nodes Misscheduled: 0
Pods Status:  20 Running / 0 Waiting / 0 Succeeded / 0 Failed
Pod Template:
  Labels:           app=prometheus
                    component=node-exporter
                    release=promeks
  Service Account:  promeks-prometheus-node-exporter
  Containers:
   prometheus-node-exporter:
    Image:      prom/node-exporter:v0.16.0
    Port:       9100/TCP
    Host Port:  9100/TCP
    Args:
      --path.procfs=/host/proc
      --path.sysfs=/host/sys
    Environment:  &lt;none&gt;
    Mounts:
      /host/proc from proc (ro)
      /host/sys from sys (ro)
  Volumes:
   proc:
    Type:          HostPath (bare host directory volume)
    Path:          /proc
    HostPathType:
   sys:
    Type:          HostPath (bare host directory volume)
    Path:          /sys
    HostPathType:
Events:            &lt;none&gt;
</code></pre>

<p>In which Prometheus pod will I find logs or events where it is complaining that 15 pods can't be scheduled?</p>

<p>I was able to recreate your issue, however not sure if root cause was the same.</p>

<p>1)
You can get all events from whole cluster</p>

<pre><code>kubeclt get events
</code></pre>

<p>In your case when have 22 nodes it would be better if you use grep </p>

<pre><code>kubectl get events | grep Warning
</code></pre>

<p>or</p>

<pre><code>kubectl get events | grep daemonset-controller
</code></pre>

<p>2)
SSH to node withoud pod. Use command</p>

<pre><code>docker ps -a
</code></pre>

<p>Locate CONTAINER ID from entry where NAMES include node name.</p>

<pre><code>docker inspect &lt;ContainerID&gt;
</code></pre>

<p>You will get a lot informations about container which may help you define why it is failing.</p>

<p>In my case I had issue with PersistentVolumeClaim (did not have gp2 storage class) and insufficient CPU resources.</p>

<p>Storage class can be obtain by </p>

<pre><code>kubectl get storageclass
</code></pre>
