我创建了一个Elasticsearch服务，它使用guide在Kubernetes GCP集群中将其像后端一样应用于jaeger跟踪。
我有elasticsearch服务：
~/w/jaeger-elasticsearch ❯❯❯ kubectl get service elasticsearch
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
elasticsearch ClusterIP None <none> 9200/TCP,9300/TCP 8m
~/w/jaeger-elasticsearch ❯❯❯
他们各自的豆荚叫做elasticsearch-0
~/w/jaeger-elasticsearch ❯❯❯ kubectl get pods
NAME READY STATUS RESTARTS AGE
elasticsearch-0 1/1 Running 0 37m
jaeger-agent-cnw9m 1/1 Running 0 2h
jaeger-agent-dl5n9 1/1 Running 0 2h
jaeger-agent-zzljk 1/1 Running 0 2h
jaeger-collector-9879cd76-fvpz4 1/1 Running 0 2h
jaeger-query-5584576487-dzqkd 1/1 Running 0 2h
~/w/jaeger-elasticsearch ❯❯❯ kubectl get pod elasticsearch-0
NAME READY STATUS RESTARTS AGE
elasticsearch-0 1/1 Running 0 38m
~/w/jaeger-elasticsearch ❯❯❯
我已经在GCP上输入了pod配置，可以看到我的elasticsearch-0 pod的资源有限：
apiVersion: v1
kind: Pod
metadata:
annotations:
kubernetes.io/limit-ranger: 'LimitRanger plugin set: cpu request for container
elasticsearch'
creationTimestamp: 2019-01-03T09:11:10Z
generateName: elasticsearch-
然后，我想为其分配特定的CPU请求和CPU限制according to the documentation，然后，我继续修改pod清单，并添加以下指令：
- cpu "2"在args部分：
args:
- -cpus
- "2"
我在容器资源中包含一个resources:requests字段，以便指定0.5 CPU的请求，并且我已经包含一个resources:limits以指定这种方式的CPU限制：
limits:
cpu: "1"
requests:
cpu: "0.5"
我完整的豆荚清单是这个（请参见数字1、2、3、4和5用＃符号注释的数字）：
apiVersion: v1
kind: Pod
metadata:
annotations:
kubernetes.io/limit-ranger: 'LimitRanger plugin set: cpu request for container
elasticsearch'
creationTimestamp: 2019-01-03T09:11:10Z
generateName: elasticsearch-
labels:
app: jaeger-elasticsearch
controller-revision-hash: elasticsearch-8684f69799
jaeger-infra: elasticsearch-replica
statefulset.kubernetes.io/pod-name: elasticsearch-0
name: elasticsearch-0
namespace: default
ownerReferences:
- apiVersion: apps/v1
blockOwnerDeletion: true
controller: true
kind: StatefulSet
name: elasticsearch
uid: 86578784-0f36-11e9-b8b1-42010aa60019
resourceVersion: "2778"
selfLink: /api/v1/namespaces/default/pods/elasticsearch-0
uid: 82d3be2f-0f37-11e9-b8b1-42010aa60019
spec:
containers:
- args:
- -Ehttp.host=0.0.0.0
- -Etransport.host=127.0.0.1
- -cpus # 1
- "2" # 2
command:
- bin/elasticsearch
image: docker.elastic.co/elasticsearch/elasticsearch:5.6.0
imagePullPolicy: Always
name: elasticsearch
readinessProbe:
exec:
command:
- curl
- --fail
- --silent
- --output
- /dev/null
- --user
- elastic:changeme
- localhost:9200
failureThreshold: 3
initialDelaySeconds: 5
periodSeconds: 5
successThreshold: 1
timeoutSeconds: 4
resources: # 3
limits:
cpu: "1" # 4
requests:
cpu: "0.5" # 5
# container has a request of 0.5 CPU
#cpu: 100m
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
volumeMounts:
- mountPath: /data
name: data
- mountPath: /var/run/secrets/kubernetes.io/serviceaccount
name: default-token-96vwj
readOnly: true
dnsPolicy: ClusterFirst
hostname: elasticsearch-0
nodeName: gke-jaeger-persistent-st-default-pool-81004235-h8xt
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
serviceAccount: default
serviceAccountName: default
subdomain: elasticsearch
terminationGracePeriodSeconds: 30
tolerations:
- effect: NoExecute
key: node.kubernetes.io/not-ready
operator: Exists
tolerationSeconds: 300
- effect: NoExecute
key: node.kubernetes.io/unreachable
operator: Exists
tolerationSeconds: 300
volumes:
- emptyDir: {}
name: data
- name: default-token-96vwj
secret:
defaultMode: 420
secretName: default-token-96vwj
status:
conditions:
- lastProbeTime: null
lastTransitionTime: 2019-01-03T09:11:10Z
status: "True"
type: Initialized
- lastProbeTime: null
lastTransitionTime: 2019-01-03T09:11:40Z
status: "True"
type: Ready
- lastProbeTime: null
lastTransitionTime: 2019-01-03T09:11:10Z
status: "True"
type: PodScheduled
containerStatuses:
- containerID: docker://46eb2c664f947a2a0a35ac7799b04c77756aef0a9935855c2dadcf959bd27030
image: docker.elastic.co/elasticsearch/elasticsearch:5.6.0
imageID: docker-pullable://docker.elastic.co/elasticsearch/elasticsearch@sha256:f95e7d4256197a9bb866b166d9ad37963dc7c5764d6ae6400e551f4987a659d7
lastState: {}
name: elasticsearch
ready: true
restartCount: 0
state:
running:
startedAt: 2019-01-03T09:11:13Z
hostIP: 10.166.0.2
phase: Running
podIP: 10.36.0.10
qosClass: Burstable
startTime: 2019-01-03T09:11:10Z
但是当我应用pod清单文件时，我得到以下输出：
Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
Error from server (Conflict): error when applying patch:
.
.
.
for: "elasticsearch-0.yaml": Operation cannot be fulfilled on pods "elasticsearch-0": the object has been modified; please apply your changes to the latest version and try again
~/w/jaeger-elasticsearch ❯❯❯
kubectl apply命令的完整输出如下：
~/w/jaeger-elasticsearch ❯❯❯ kubectl apply -f elasticsearch-0.yaml
Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
Error from server (Conflict): error when applying patch:
{"metadata":{"annotations":{"kubectl.kubernetes.io/last-applied-configuration":"{\"apiVersion\":\"v1\",\"kind\":\"Pod\",\"metadata\":{\"annotations\":{\"kubernetes.io/limit-ranger\":\"LimitRanger plugin set: cpu request for container elasticsearch\"},\"creationTimestamp\":\"2019-01-03T09:11:10Z\",\"generateName\":\"elasticsearch-\",\"labels\":{\"app\":\"jaeger-elasticsearch\",\"controller-revision-hash\":\"elasticsearch-8684f69799\",\"jaeger-infra\":\"elasticsearch-replica\",\"statefulset.kubernetes.io/pod-name\":\"elasticsearch-0\"},\"name\":\"elasticsearch-0\",\"namespace\":\"default\",\"ownerReferences\":[{\"apiVersion\":\"apps/v1\",\"blockOwnerDeletion\":true,\"controller\":true,\"kind\":\"StatefulSet\",\"name\":\"elasticsearch\",\"uid\":\"86578784-0f36-11e9-b8b1-42010aa60019\"}],\"resourceVersion\":\"2778\",\"selfLink\":\"/api/v1/namespaces/default/pods/elasticsearch-0\",\"uid\":\"82d3be2f-0f37-11e9-b8b1-42010aa60019\"},\"spec\":{\"containers\":[{\"args\":[\"-Ehttp.host=0.0.0.0\",\"-Etransport.host=127.0.0.1\",\"-cpus\",\"2\"],\"command\":[\"bin/elasticsearch\"],\"image\":\"docker.elastic.co/elasticsearch/elasticsearch:5.6.0\",\"imagePullPolicy\":\"Always\",\"name\":\"elasticsearch\",\"readinessProbe\":{\"exec\":{\"command\":[\"curl\",\"--fail\",\"--silent\",\"--output\",\"/dev/null\",\"--user\",\"elastic:changeme\",\"localhost:9200\"]},\"failureThreshold\":3,\"initialDelaySeconds\":5,\"periodSeconds\":5,\"successThreshold\":1,\"timeoutSeconds\":4},\"resources\":{\"limits\":{\"cpu\":\"1\"},\"requests\":{\"cpu\":\"0.5\"}},\"terminationMessagePath\":\"/dev/termination-log\",\"terminationMessagePolicy\":\"File\",\"volumeMounts\":[{\"mountPath\":\"/data\",\"name\":\"data\"},{\"mountPath\":\"/var/run/secrets/kubernetes.io/serviceaccount\",\"name\":\"default-token-96vwj\",\"readOnly\":true}]}],\"dnsPolicy\":\"ClusterFirst\",\"hostname\":\"elasticsearch-0\",\"nodeName\":\"gke-jaeger-persistent-st-default-pool-81004235-h8xt\",\"restartPolicy\":\"Always\",\"schedulerName\":\"default-scheduler\",\"securityContext\":{},\"serviceAccount\":\"default\",\"serviceAccountName\":\"default\",\"subdomain\":\"elasticsearch\",\"terminationGracePeriodSeconds\":30,\"tolerations\":[{\"effect\":\"NoExecute\",\"key\":\"node.kubernetes.io/not-ready\",\"operator\":\"Exists\",\"tolerationSeconds\":300},{\"effect\":\"NoExecute\",\"key\":\"node.kubernetes.io/unreachable\",\"operator\":\"Exists\",\"tolerationSeconds\":300}],\"volumes\":[{\"emptyDir\":{},\"name\":\"data\"},{\"name\":\"default-token-96vwj\",\"secret\":{\"defaultMode\":420,\"secretName\":\"default-token-96vwj\"}}]},\"status\":{\"conditions\":[{\"lastProbeTime\":null,\"lastTransitionTime\":\"2019-01-03T09:11:10Z\",\"status\":\"True\",\"type\":\"Initialized\"},{\"lastProbeTime\":null,\"lastTransitionTime\":\"2019-01-03T09:11:40Z\",\"status\":\"True\",\"type\":\"Ready\"},{\"lastProbeTime\":null,\"lastTransitionTime\":\"2019-01-03T09:11:10Z\",\"status\":\"True\",\"type\":\"PodScheduled\"}],\"containerStatuses\":[{\"containerID\":\"docker://46eb2c664f947a2a0a35ac7799b04c77756aef0a9935855c2dadcf959bd27030\",\"image\":\"docker.elastic.co/elasticsearch/elasticsearch:5.6.0\",\"imageID\":\"docker-pullable://docker.elastic.co/elasticsearch/elasticsearch@sha256:f95e7d4256197a9bb866b166d9ad37963dc7c5764d6ae6400e551f4987a659d7\",\"lastState\":{},\"name\":\"elasticsearch\",\"ready\":true,\"restartCount\":0,\"state\":{\"running\":{\"startedAt\":\"2019-01-03T09:11:13Z\"}}}],\"hostIP\":\"10.166.0.2\",\"phase\":\"Running\",\"podIP\":\"10.36.0.10\",\"qosClass\":\"Burstable\",\"startTime\":\"2019-01-03T09:11:10Z\"}}\n"},"creationTimestamp":"2019-01-03T09:11:10Z","resourceVersion":"2778","uid":"82d3be2f-0f37-11e9-b8b1-42010aa60019"},"spec":{"$setElementOrder/containers":[{"name":"elasticsearch"}],"containers":[{"args":["-Ehttp.host=0.0.0.0","-Etransport.host=127.0.0.1","-cpus","2"],"name":"elasticsearch","resources":{"limits":{"cpu":"1"},"requests":{"cpu":"0.5"}}}]},"status":{"$setElementOrder/conditions":[{"type":"Initialized"},{"type":"Ready"},{"type":"PodScheduled"}],"conditions":[{"lastTransitionTime":"2019-01-03T09:11:10Z","type":"Initialized"},{"lastTransitionTime":"2019-01-03T09:11:40Z","type":"Ready"},{"lastTransitionTime":"2019-01-03T09:11:10Z","type":"PodScheduled"}],"containerStatuses":[{"containerID":"docker://46eb2c664f947a2a0a35ac7799b04c77756aef0a9935855c2dadcf959bd27030","image":"docker.elastic.co/elasticsearch/elasticsearch:5.6.0","imageID":"docker-pullable://docker.elastic.co/elasticsearch/elasticsearch@sha256:f95e7d4256197a9bb866b166d9ad37963dc7c5764d6ae6400e551f4987a659d7","lastState":{},"name":"elasticsearch","ready":true,"restartCount":0,"state":{"running":{"startedAt":"2019-01-03T09:11:13Z"}}}],"podIP":"10.36.0.10","startTime":"2019-01-03T09:11:10Z"}}
to:
Resource: "/v1, Resource=pods", GroupVersionKind: "/v1, Kind=Pod"
Name: "elasticsearch-0", Namespace: "default"
Object: &{map["kind":"Pod" "apiVersion":"v1" "metadata":map["selfLink":"/api/v1/namespaces/default/pods/elasticsearch-0" "generateName":"elasticsearch-" "namespace":"default" "resourceVersion":"11515" "creationTimestamp":"2019-01-03T10:29:53Z""labels":map["controller-revision-hash":"elasticsearch-8684f69799" "jaeger-infra":"elasticsearch-replica" "statefulset.kubernetes.io/pod-name":"elasticsearch-0" "app":"jaeger-elasticsearch"] "annotations":map["kubernetes.io/limit-ranger":"LimitRanger plugin set: cpu request for container elasticsearch"] "ownerReferences":[map["controller":%!q(bool=true) "blockOwnerDeletion":%!q(bool=true) "apiVersion":"apps/v1" "kind":"StatefulSet" "name":"elasticsearch" "uid":"86578784-0f36-11e9-b8b1-42010aa60019"]] "name":"elasticsearch-0" "uid":"81cba2ad-0f42-11e9-b8b1-42010aa60019"] "spec":map["restartPolicy":"Always" "terminationGracePeriodSeconds":'\x1e' "serviceAccountName":"default" "securityContext":map[] "subdomain":"elasticsearch" "schedulerName":"default-scheduler" "tolerations":[map["operator":"Exists" "effect":"NoExecute" "tolerationSeconds":'\u012c' "key":"node.kubernetes.io/not-ready"] map["operator":"Exists" "effect":"NoExecute" "tolerationSeconds":'\u012c' "key":"node.kubernetes.io/unreachable"]] "volumes":[map["name":"data" "emptyDir":map[]] map["name":"default-token-96vwj" "secret":map["secretName":"default-token-96vwj" "defaultMode":'\u01a4']]] "dnsPolicy":"ClusterFirst" "serviceAccount":"default" "nodeName":"gke-jaeger-persistent-st-default-pool-81004235-h8xt" "hostname":"elasticsearch-0" "containers":[map["name":"elasticsearch" "image":"docker.elastic.co/elasticsearch/elasticsearch:5.6.0" "readinessProbe":map["exec":map["command":["curl" "--fail" "--silent" "--output" "/dev/null" "--user" "elastic:changeme" "localhost:9200"]] "initialDelaySeconds":'\x05' "timeoutSeconds":'\x04' "periodSeconds":'\x05' "successThreshold":'\x01' "failureThreshold":'\x03'] "terminationMessagePath":"/dev/termination-log" "imagePullPolicy":"Always" "command":["bin/elasticsearch"] "args":["-Ehttp.host=0.0.0.0" "-Etransport.host=127.0.0.1"] "resources":map["requests":map["cpu":"100m"]] "volumeMounts":[map["name":"data" "mountPath":"/data"] map["name":"default-token-96vwj" "readOnly":%!q(bool=true) "mountPath":"/var/run/secrets/kubernetes.io/serviceaccount"]] "terminationMessagePolicy":"File"]]] "status":map["qosClass":"Burstable" "phase":"Running" "conditions":[map["type":"Initialized" "status":"True" "lastProbeTime":<nil> "lastTransitionTime":"2019-01-03T10:29:53Z"] map["type":"Ready" "status":"True" "lastProbeTime":<nil> "lastTransitionTime":"2019-01-03T10:30:17Z"] map["type":"PodScheduled" "status":"True" "lastProbeTime":<nil> "lastTransitionTime":"2019-01-03T10:29:53Z"]] "hostIP":"10.166.0.2" "podIP":"10.36.0.11" "startTime":"2019-01-03T10:29:53Z" "containerStatuses":[map["name":"elasticsearch" "state":map["running":map["startedAt":"2019-01-03T10:29:55Z"]] "lastState":map[] "ready":%!q(bool=true) "restartCount":'\x00' "image":"docker.elastic.co/elasticsearch/elasticsearch:5.6.0" "imageID":"docker-pullable://docker.elastic.co/elasticsearch/elasticsearch@sha256:f95e7d4256197a9bb866b166d9ad37963dc7c5764d6ae6400e551f4987a659d7" "containerID":"docker://e7f629b79da33b482b38fdb990717b3d61d114503961302e2e8feccb213bbd4b"]]]]}
for: "elasticsearch-0.yaml": Operation cannot be fulfilled on pods "elasticsearch-0": the object has been modified; please apply your changes to the latest version and try again
~/w/jaeger-elasticsearch ❯❯❯
如何修改我的pod yaml文件以为其分配更多资源并解决kubernetes.io/limit-ranger: 'LimitRanger plugin set: cpu request for container elasticsearch'消息？
答案 0 :(得分：1)
这是一篇有关如何使用限制范围及其默认值[1]的文章/指南
[1] https://medium.com/@betz.mark/understanding-resource-limits-in-kubernetes-cpu-time-9eff74d3161b