Kubernetes 101 - Part11 - Find Kubernetes nodes with DiskPressure

Following are two quick and easy ways to find Kubernetes nodes with disk pressure:

jq:

kubectl get nodes -o json | jq -r '.items[] | select(.status.conditions[].reason=="KubeletHasDiskPressure") | .metadata.name'

jsonpath:

kubectl get nodes -o jsonpath='{range .items[*]} {.metadata.name} {" "} {.status.conditions[?(@.type=="DiskPressure")].status} {" "} {"\n"}'

❯ kubectl get no
NAME                                 STATUS   ROLES                  AGE     VERSION
tkc-btvsm-72hz2                      Ready    control-plane,master   124d    v1.23.8+vmware.3
tkc-btvsm-79xtn                      Ready    control-plane,master   124d    v1.23.8+vmware.3
tkc-btvsm-klmjz                      Ready    control-plane,master   124d    v1.23.8+vmware.3
tkc-workers-2cmvm-5bfcc5c9cd-gmv6m   Ready    <none>                 5d17h   v1.23.8+vmware.3
tkc-workers-2cmvm-5bfcc5c9cd-m44sq   Ready    <none>                 5d17h   v1.23.8+vmware.3
tkc-workers-2cmvm-5bfcc5c9cd-mjjlk   Ready    <none>                 5d17h   v1.23.8+vmware.3
tkc-workers-2cmvm-5bfcc5c9cd-wflrl   Ready    <none>                 5d17h   v1.23.8+vmware.3
tkc-workers-2cmvm-5bfcc5c9cd-xnqvk   Ready    <none>                 5d17h   v1.23.8+vmware.3
❯
❯
❯ kubectl get nodes -o json | jq -r '.items[] | select(.status.conditions[].reason=="KubeletHasDiskPressure") | .metadata.name'
tkc-workers-2cmvm-5bfcc5c9cd-m44sq
tkc-workers-2cmvm-5bfcc5c9cd-wflrl
❯
❯ kubectl get nodes -o jsonpath='{range .items[*]} {.metadata.name} {" "} {.status.conditions[?(@.type=="DiskPressure")].status} {" "} {"\n"}'
 tkc-btvsm-72hz2   False
 tkc-btvsm-79xtn   False
 tkc-btvsm-klmjz   False
 tkc-workers-2cmvm-5bfcc5c9cd-gmv6m   False
 tkc-workers-2cmvm-5bfcc5c9cd-m44sq   True
 tkc-workers-2cmvm-5bfcc5c9cd-mjjlk   False
 tkc-workers-2cmvm-5bfcc5c9cd-wflrl   True
 tkc-workers-2cmvm-5bfcc5c9cd-xnqvk   False
 %
❯

Hope it was useful. Cheers!