我在裸机kubernetes集群上设置HPA时遇到问题。
毋庸置疑，DNS和monitoring服务已在运行。
让我添加一些环境信息：
# kubectl version
Client Version: version.Info{Major:"1", Minor:"2", GitVersion:"v1.2.4", GitCommit:"3eed1e3be6848b877ff80a93da3785d9034d0a4f", GitTreeState:"clean"}
Server Version: version.Info{Major:"1", Minor:"2", GitVersion:"v1.2.4", GitCommit:"3eed1e3be6848b877ff80a93da3785d9034d0a4f", GitTreeState:"clean"}
# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
豆荚：
# kubectl describe pods php-apache-580041376-65z45
Name: php-apache-580041376-65z45
Namespace: default
Node: node4/172.16.150.29
Start Time: Thu, 30 Jun 2016 11:23:02 -0300
Labels: pod-template-hash=580041376,run=php-apache
Status: Running
IP: 10.20.10.7
Controllers: ReplicaSet/php-apache-580041376
Containers:
php-apache:
Container ID: docker://d9a98a539fca4b6b93b4c7e065c46e60958e52d8b8b57b1fd5438b03a8a32c23
Image: gcr.io/google_containers/hpa-example
Image ID: docker://beeb6a4e16c80f4ca23132bc2ac06d6bf6a872a9af4307fb1e9dd0f993c1f102
Port: 80/TCP
QoS Tier:
cpu: Burstable
memory: BestEffort
Requests:
cpu: 200m
State: Running
Started: Thu, 30 Jun 2016 11:23:11 -0300
Ready: True
Restart Count: 0
Environment Variables:
Conditions:
Type Status
Ready True
Volumes:
default-token-hu1se:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-hu1se
Events:
FirstSeen LastSeen Count From SubobjectPath Type Reason Message
--------- -------- ----- ---- ------------- -------- ------ -------
59m 59m 1 {default-scheduler } Normal Scheduled Successfully assigned php-apache-580041376-65z45 to node4
59m 59m 1 {kubelet node4} spec.containers{php-apache} Normal Pulling pulling image "gcr.io/google_containers/hpa-example"
59m 59m 1 {kubelet node4} spec.containers{php-apache} Normal Pulled Successfully pulled image "gcr.io/google_containers/hpa-example"
59m 59m 1 {kubelet node4} spec.containers{php-apache} Normal Created Created container with docker id d9a98a539fca
59m 59m 1 {kubelet node4} spec.containers{php-apache} Normal Started Started container with docker id d9a98a539fca
HPA无法设置“当前CPU利用率”：
# kubectl describe hpa php-apache
Name: php-apache
Namespace: default
Labels: <none>
Annotations: <none>
CreationTimestamp: Thu, 30 Jun 2016 11:23:29 -0300
Reference: Deployment/php-apache/scale
Target CPU utilization: 50%
Current CPU utilization: <unset>
Min replicas: 1
Max replicas: 10
Events:
FirstSeen LastSeen Count From SubobjectPath Type Reason Message
--------- -------- ----- ---- ------------- -------- ------ -------
1h 5s 123 {horizontal-pod-autoscaler } Warning FailedGetMetrics failed to get CPU consumption and request: failed to unmarshall heapster response: invalid character 'E' looking for beginning of value
1h 5s 123 {horizontal-pod-autoscaler } Warning FailedComputeReplicas failed to get CPU utilization: failed to get CPU consumption and request: failed to unmarshall heapster response: invalid character 'E' looking for beginning of value
不过，您可以从Heapster服务集群IP获取CPU统计信息：
# kubectl exec busyboxplus -- curl http://10.254.134.145/api/v1/model/namespaces/default/pods/php-apache-580041376-65z45/metrics/cpu-usage
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 1072 100 1072 0 0 932k 0 --:--:-- --:--:-- --:--:-- 1046k
{
"metrics": [
{
"timestamp": "2016-06-30T15:12:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:13:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:14:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:15:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:16:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:17:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:18:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:19:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:20:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:21:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:22:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:23:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:24:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:25:00Z",
"value": 0
},
{
"timestamp": "2016-06-30T15:26:00Z",
"value": 0
}
],
"latestTimestamp": "2016-06-30T15:26:00Z"
}[
有人可以帮我解决这个问题吗？
提前致谢。