view the json piped in metric and evaluate.py #173
thatrajeevkr
started this conversation in
General
Replies: 2 comments 4 replies
-
|
Hi, To see the values piped to your script you can use the For example: evaluate:
type: "shell"
timeout: 2500
shell:
entrypoint: "python"
logStderr: true
command:
- "/evaluate.py"
metric:
type: "shell"
timeout: 2500
shell:
entrypoint: "python"
logStderr: true
command:
- "/metric.py"
runMode: "per-resource"This will log out anything that is written to standard error of the def main():
# Parse spec into a dict
stdin = sys.stdin.read()
spec = json.loads(stdin)
sys.stderr.write(stdin)
metric(spec)
...Then you should be able to see something like this in the logs: (You can feed this into something like jq to get it pretty printed) {
"resource": {
"apiVersion": "apps/v1",
"kind": "Deployment",
"metadata": {
"annotations": {
"deployment.kubernetes.io/revision": "1",
"kubectl.kubernetes.io/last-applied-configuration": "{\"apiVersion\":\"apps/v1\",\"kind\":\"Deployment\",\"metadata\":{\"annotations\":{},\"labels\":{\"numPods\":\"3\"},\"name\":\"hello-kubernetes\",\"namespace\":\"default\"},\"spec\":{\"replicas\":1,\"selector\":{\"matchLabels\":{\"app\":\"hello-kubernetes\"}},\"template\":{\"metadata\":{\"labels\":{\"app\":\"hello-kubernetes\"}},\"spec\":{\"containers\":[{\"image\":\"paulbouwer/hello-kubernetes:1.5\",\"name\":\"hello-kubernetes\",\"ports\":[{\"containerPort\":8080}]}]}}}}\n"
},
"creationTimestamp": "2022-07-06T21:51:55Z",
"generation": 2,
"labels": {
"numPods": "3"
},
"managedFields": [
{
"apiVersion": "apps/v1",
"fieldsType": "FieldsV1",
"fieldsV1": {
"f:spec": {
"f:replicas": {}
}
},
"manager": "custom-pod-autoscaler",
"operation": "Update",
"subresource": "scale"
},
{
"apiVersion": "apps/v1",
"fieldsType": "FieldsV1",
"fieldsV1": {
"f:metadata": {
"f:annotations": {
".": {},
"f:kubectl.kubernetes.io/last-applied-configuration": {}
},
"f:labels": {
".": {},
"f:numPods": {}
}
},
"f:spec": {
"f:progressDeadlineSeconds": {},
"f:revisionHistoryLimit": {},
"f:selector": {},
"f:strategy": {
"f:rollingUpdate": {
".": {},
"f:maxSurge": {},
"f:maxUnavailable": {}
},
"f:type": {}
},
"f:template": {
"f:metadata": {
"f:labels": {
".": {},
"f:app": {}
}
},
"f:spec": {
"f:containers": {
"k:{\"name\":\"hello-kubernetes\"}": {
".": {},
"f:image": {},
"f:imagePullPolicy": {},
"f:name": {},
"f:ports": {
".": {},
"k:{\"containerPort\":8080,\"protocol\":\"TCP\"}": {
".": {},
"f:containerPort": {},
"f:protocol": {}
}
},
"f:resources": {},
"f:terminationMessagePath": {},
"f:terminationMessagePolicy": {}
}
},
"f:dnsPolicy": {},
"f:restartPolicy": {},
"f:schedulerName": {},
"f:securityContext": {},
"f:terminationGracePeriodSeconds": {}
}
}
}
},
"manager": "kubectl-client-side-apply",
"operation": "Update",
"time": "2022-07-06T21:51:55Z"
},
{
"apiVersion": "apps/v1",
"fieldsType": "FieldsV1",
"fieldsV1": {
"f:metadata": {
"f:annotations": {
"f:deployment.kubernetes.io/revision": {}
}
},
"f:status": {
"f:availableReplicas": {},
"f:conditions": {
".": {},
"k:{\"type\":\"Available\"}": {
".": {},
"f:lastTransitionTime": {},
"f:lastUpdateTime": {},
"f:message": {},
"f:reason": {},
"f:status": {},
"f:type": {}
},
"k:{\"type\":\"Progressing\"}": {
".": {},
"f:lastTransitionTime": {},
"f:lastUpdateTime": {},
"f:message": {},
"f:reason": {},
"f:status": {},
"f:type": {}
}
},
"f:observedGeneration": {},
"f:readyReplicas": {},
"f:replicas": {},
"f:updatedReplicas": {}
}
},
"manager": "k3s",
"operation": "Update",
"subresource": "status",
"time": "2022-07-06T21:52:15Z"
}
],
"name": "hello-kubernetes",
"namespace": "default",
"resourceVersion": "897",
"uid": "887aa97a-ed42-47ba-8703-67094a96d03a"
},
"spec": {
"progressDeadlineSeconds": 600,
"replicas": 6,
"revisionHistoryLimit": 10,
"selector": {
"matchLabels": {
"app": "hello-kubernetes"
}
},
"strategy": {
"rollingUpdate": {
"maxSurge": "25%",
"maxUnavailable": "25%"
},
"type": "RollingUpdate"
},
"template": {
"metadata": {
"creationTimestamp": null,
"labels": {
"app": "hello-kubernetes"
}
},
"spec": {
"containers": [
{
"image": "paulbouwer/hello-kubernetes:1.5",
"imagePullPolicy": "IfNotPresent",
"name": "hello-kubernetes",
"ports": [
{
"containerPort": 8080,
"protocol": "TCP"
}
],
"resources": {},
"terminationMessagePath": "/dev/termination-log",
"terminationMessagePolicy": "File"
}
],
"dnsPolicy": "ClusterFirst",
"restartPolicy": "Always",
"schedulerName": "default-scheduler",
"securityContext": {},
"terminationGracePeriodSeconds": 30
}
}
},
"status": {
"availableReplicas": 6,
"conditions": [
{
"lastTransitionTime": "2022-07-06T21:51:55Z",
"lastUpdateTime": "2022-07-06T21:52:03Z",
"message": "ReplicaSet \"hello-kubernetes-ffd764cf9\" has successfully progressed.",
"reason": "NewReplicaSetAvailable",
"status": "True",
"type": "Progressing"
},
{
"lastTransitionTime": "2022-07-06T21:52:14Z",
"lastUpdateTime": "2022-07-06T21:52:14Z",
"message": "Deployment has minimum availability.",
"reason": "MinimumReplicasAvailable",
"status": "True",
"type": "Available"
}
],
"observedGeneration": 2,
"readyReplicas": 6,
"replicas": 6,
"updatedReplicas": 6
}
},
"runType": "scaler"
}Hope that helps! |
Beta Was this translation helpful? Give feedback.
2 replies
-
|
Which logs should i check to see the result? |
Beta Was this translation helpful? Give feedback.
-
|
You can see the result in the logs for the Pod the Autoscaler is using; use |
Beta Was this translation helpful? Give feedback.
-
|
@jthomperoo I am also trying the getting started example. I set up I am using kind on Windows10, don't know if this will affect how things works. |
Beta Was this translation helpful? Give feedback.
2 replies
-
|
I can't see anything obviously wrong with your scaler code - it looks like you are writing to stderr in both of your Are you able to see any logs at all printed by the CPA? You shouldn't need to change the log verbosity since the |
Beta Was this translation helpful? Give feedback.
-
|
Yes I can see the logs printed by CPA by default. I just can't see the logs defined in my own functions. |
Beta Was this translation helpful? Give feedback.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
-
Can you please tell me how to view the json piped into the metric.py script?
In example, I can see an example json piped, but I want to see the json piped into my CPA. Please help me in this.
Beta Was this translation helpful? Give feedback.
All reactions