<p>Running <code>kubectl get all</code> returns Throttling request errors</p>
<p>How can I debug and fix this issue?</p>
<pre><code>I0223 10:28:04.717522   44883 request.go:655] Throttling request took 1.1688991s, request: GET:https://192.168.64.2:8443/apis/apps/v1?timeout=32s
I0223 10:28:14.913541   44883 request.go:655] Throttling request took 5.79656704s, request: GET:https://192.168.64.2:8443/apis/authorization.k8s.io/v1?timeout=32s
I0223 10:28:24.914386   44883 request.go:655] Throttling request took 7.394979677s, request: GET:https://192.168.64.2:8443/apis/cert-manager.io/v1alpha2?timeout=32s
I0223 10:28:35.513643   44883 request.go:655] Throttling request took 1.196992376s, request: GET:https://192.168.64.2:8443/api/v1?timeout=32s
I0223 10:28:45.516586   44883 request.go:655] Throttling request took 2.79962307s, request: GET:https://192.168.64.2:8443/apis/rbac.authorization.k8s.io/v1?timeout=32s
I0223 10:28:55.716699   44883 request.go:655] Throttling request took 4.600430975s, request: GET:https://192.168.64.2:8443/apis/node.k8s.io/v1beta1?timeout=32s
I0223 10:29:05.717707   44883 request.go:655] Throttling request took 6.196503125s, request: GET:https://192.168.64.2:8443/apis/storage.k8s.io/v1?timeout=32s
I0223 10:29:15.914744   44883 request.go:655] Throttling request took 7.99827047s, request: GET:https://192.168.64.2:8443/apis/acme.cert-manager.io/v1alpha2?timeout=32s
</code></pre>

<p>To diagnose kubectl commands, you select a level of verbosity when running the command.
If you run <code>kubectl -v=9</code> you'll get a load of debug output.</p>
<p>If you look in there you may find the permissions for your cache directory within .kube are invalid.</p>
<pre><code>I0511 09:28:13.431116  260204 cached_discovery.go:87] failed to write cache to /home/$USER/.kube/cache/discovery/CLUSTER_NAME/security.istio.io/v1beta1/serverresources.json due to mkdir /home/$USER/.kube/cache/discovery: permission denied
</code></pre>
<p>To resolve this I simply set the permissions to allow the cache data to be written.</p>
<pre><code>chmod 755 -R ~/.kube/cache
</code></pre>
<p>This resolved the problem for me - hope it helps others.</p>
