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welshstew/cpu-memory-allocated-as-percentage.sh

Last active July 22, 2023 07:17
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cpu and memory utilization on Openshift nodes
Raw
cpu-memory-allocated-as-percentage.sh
#NodeName, cpu requests, cpu limits, memory requests, memory limits
[root@host ~]# oc get node --no-headers | while read node stat role age ver; do echo -ne "$node\t"; oc describe node $node | egrep '^ (cpu|memory)' | sed -r 's/\(|\)//g' | while read lbl x p1 y p2; do echo -n \ $p1 $p2 ; done; echo ""; done
master0 43% 0% 28% 3%
master1 40% 0% 23% 3%
master2 44% 0% 27% 3%
worker0 33% 8% 17% 3%
worker1 35% 8% 19% 3%
worker2 22% 2% 15% 4%
Raw
cpu-req-cpu-lim-mem-req-mem-lim-age-per-node.sh
#NodeName, CPU Requests CPU Limits Memory Requests Memory Limits AGE (from oc describe node)
[root@host ~]# oc get node --no-headers | while read node stat role age ver; do oc describe node $node | egrep '.+(%.+){3}' | sed -r 's/\(|\)//g' | while read line; do echo $node $line; done; echo ""; done | column -t
master0 openshift-apiserver-operator openshift-apiserver-operator-7bcd69678-9r8fl 10m 0% 0 0% 50Mi 0% 0 0% 45h
master0 openshift-apiserver apiserver-bjgqh 150m 4% 0 0% 200Mi 1% 0 0% 45h
master0 openshift-cloud-credential-operator cloud-credential-operator-75f696fdf7-fwggh 10m 0% 0 0% 150Mi 0% 0 0% 45h
master0 openshift-cluster-machine-approver machine-approver-854544ff4d-h9wbm 10m 0% 0 0% 50Mi 0% 0 0% 45h
master0 openshift-cluster-node-tuning-operator tuned-pxp9v 10m 0% 0 0% 50Mi 0% 0 0% 45h
master0 openshift-cluster-version cluster-version-operator-cb6bf8766-2cdsh 20m 0% 0 0% 50Mi 0% 0 0% 45h
master0 openshift-controller-manager-operator openshift-controller-manager-operator-b6856d4ff-nvc9c 10m 0% 0 0% 50Mi 0% 0 0% 45h
# REDACTED
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oc-adm-top-pod.sh
[root@host ~]# oc adm top pod --all-namespaces
NAMESPACE NAME CPU(cores) MEMORY(bytes)
openshift-apiserver apiserver-729wn 4m 111Mi
openshift-apiserver apiserver-bjgqh 7m 113Mi
openshift-apiserver apiserver-cv94b 5m 115Mi
openshift-apiserver-operator openshift-apiserver-operator-7bcd69678-9r8fl 3m 31Mi
openshift-authentication oauth-openshift-7469964dbb-7h6w2 1m 20Mi
openshift-authentication oauth-openshift-7469964dbb-r65bj 1m 20Mi
openshift-authentication-operator authentication-operator-55f4b64744-9csk9 4m 48Mi
openshift-cloud-credential-operator cloud-credential-operator-75f696fdf7-fwggh 1m 60Mi
openshift-cluster-machine-approver machine-approver-854544ff4d-h9wbm 0m 13Mi
openshift-cluster-node-tuning-operator cluster-node-tuning-operator-56485dcbb4-5gg7p 0m 28Mi
#REDACTED
Raw
oc-adm-top.node.sh
[root@host ~]# oc adm top node
NAME CPU(cores) CPU% MEMORY(bytes) MEMORY%
master0 408m 11% 3377Mi 21%
master1 546m 15% 2772Mi 17%
master2 448m 12% 3325Mi 21%
worker0 238m 6% 2151Mi 13%
worker1 257m 7% 2188Mi 14%
worker2 128m 3% 1367Mi 11%
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oc-describe-node.sh
[root@host ~]# oc describe node/master0
Name: master0
Roles: master
Labels: beta.kubernetes.io/arch=amd64
beta.kubernetes.io/os=linux
#REDACTED
Allocated resources:
(Total limits may be over 100 percent, i.e., overcommitted.)
Resource Requests Limits
-------- -------- ------
cpu 1520m (43%) 0 (0%)
memory 4389Mi (28%) 512Mi (3%)
ephemeral-storage 0 (0%) 0 (0%)
Events: <none>
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