我使用如下所示的命令配置HPA
kubectl autoscale deployment isamruntime-v1 --cpu-percent=20 --min=1 --max=3 --namespace=default
horizontalpodautoscaler.autoscaling/isamruntime-v1 autoscaled
但是，HPA无法识别CPU负载。
pranam@UNKNOWN kubernetes % kubectl get hpa
NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE
isamruntime-v1 Deployment/isamruntime-v1 <unknown>/20% 1 3 0 3s
我读了很多文章，建议安装metrics服务器。所以，我做到了。
pranam@UNKNOWN kubernetes % kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/download/v0.3.6/components.yaml
clusterrole.rbac.authorization.k8s.io/system:aggregated-metrics-reader created
clusterrolebinding.rbac.authorization.k8s.io/metrics-server:system:auth-delegator configured
rolebinding.rbac.authorization.k8s.io/metrics-server-auth-reader configured
apiservice.apiregistration.k8s.io/v1beta1.metrics.k8s.io configured
serviceaccount/metrics-server configured
deployment.apps/metrics-server configured
service/metrics-server configured
clusterrole.rbac.authorization.k8s.io/system:metrics-server configured
clusterrolebinding.rbac.authorization.k8s.io/system:metrics-server configured
我可以看到度量服务器。
pranam@UNKNOWN kubernetes % kubectl get pods -o wide --namespace=kube-system
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
calico-kube-controllers-7d88b45844-lz8zw 1/1 Running 0 22d 10.164.27.28 10.164.27.28 <none> <none>
calico-node-bsx6p 1/1 Running 0 8d 10.164.27.39 10.164.27.39 <none> <none>
calico-node-g229m 1/1 Running 0 8d 10.164.27.46 10.164.27.46 <none> <none>
calico-node-slwrh 1/1 Running 0 22d 10.164.27.28 10.164.27.28 <none> <none>
calico-node-tztjg 1/1 Running 0 8d 10.164.27.44 10.164.27.44 <none> <none>
coredns-7d6bb98ccc-d8nrs 1/1 Running 0 25d 172.30.93.205 10.164.27.28 <none> <none>
coredns-7d6bb98ccc-n28dm 1/1 Running 0 25d 172.30.93.204 10.164.27.28 <none> <none>
coredns-7d6bb98ccc-zx5jx 1/1 Running 0 25d 172.30.93.197 10.164.27.28 <none> <none>
coredns-autoscaler-848db65fc6-lnfvf 1/1 Running 0 25d 172.30.93.201 10.164.27.28 <none> <none>
dashboard-metrics-scraper-576c46d9bd-k6z85 1/1 Running 0 25d 172.30.93.195 10.164.27.28 <none> <none>
ibm-file-plugin-7c57965855-494bz 1/1 Running 0 22d 172.30.93.216 10.164.27.28 <none> <none>
ibm-iks-cluster-autoscaler-7df84fb95c-fhtgv 1/1 Running 0 2d23h 172.30.137.98 10.164.27.46 <none> <none>
ibm-keepalived-watcher-9w4gb 1/1 Running 0 8d 10.164.27.39 10.164.27.39 <none> <none>
ibm-keepalived-watcher-ps5zm 1/1 Running 0 8d 10.164.27.46 10.164.27.46 <none> <none>
ibm-keepalived-watcher-rzxbs 1/1 Running 0 8d 10.164.27.44 10.164.27.44 <none> <none>
ibm-keepalived-watcher-w6mxb 1/1 Running 0 25d 10.164.27.28 10.164.27.28 <none> <none>
ibm-master-proxy-static-10.164.27.28 2/2 Running 0 25d 10.164.27.28 10.164.27.28 <none> <none>
ibm-master-proxy-static-10.164.27.39 2/2 Running 0 8d 10.164.27.39 10.164.27.39 <none> <none>
ibm-master-proxy-static-10.164.27.44 2/2 Running 0 8d 10.164.27.44 10.164.27.44 <none> <none>
ibm-master-proxy-static-10.164.27.46 2/2 Running 0 8d 10.164.27.46 10.164.27.46 <none> <none>
ibm-storage-watcher-67466b969f-ps55m 1/1 Running 0 22d 172.30.93.217 10.164.27.28 <none> <none>
kubernetes-dashboard-c6b4b9d77-27zwb 1/1 Running 2 22d 172.30.93.218 10.164.27.28 <none> <none>
metrics-server-79d847cf58-6frsf 2/2 Running 0 3m23s 172.30.93.226 10.164.27.28 <none> <none>
public-crbro6um6l04jalpqrsl5g-alb1-8465f75bb4-88vl5 4/4 Running 0 11h 172.30.93.225 10.164.27.28 <none> <none>
public-crbro6um6l04jalpqrsl5g-alb1-8465f75bb4-vx68d 4/4 Running 0 11h 172.30.137.104 10.164.27.46 <none> <none>
vpn-58b48cdc7c-4lp9c 1/1 Running 0 25d 172.30.93.193 10.164.27.28 <none> <none>
我使用的是Istio和sysdig。不确定这是否会破坏什么。我的k8s版本如下所示。
pranam@UNKNOWN kubernetes % kubectl version
Client Version: version.Info{Major:"1", Minor:"16", GitVersion:"v1.16.7", GitCommit:"be3d344ed06bff7a4fc60656200a93c74f31f9a4", GitTreeState:"clean", BuildDate:"2020-02-11T19:34:02Z", GoVersion:"go1.13.6", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"17", GitVersion:"v1.17.7+IKS", GitCommit:"3305158dfe9ee1f89f596ef260135dcba881848c", GitTreeState:"clean", BuildDate:"2020-06-17T18:32:22Z", GoVersion:"go1.13.9", Compiler:"gc", Platform:"linux/amd64"}
我的YAML文件是
#Assumes create-docker-store-secret.sh used to create dockerlogin secret
#Assumes create-secrets.sh used to create key file, sam admin, and cfgsvc secrets
apiVersion: storage.k8s.io/v1beta1
# Create StorageClass with gidallocate=true to allow non-root user access to mount
# This is used by PostgreSQL container
kind: StorageClass
metadata:
name: ibmc-file-bronze-gid
labels:
kubernetes.io/cluster-service: "true"
provisioner: ibm.io/ibmc-file
parameters:
type: "Endurance"
iopsPerGB: "2"
sizeRange: "[1-12000]Gi"
mountOptions: nfsvers=4.1,hard
billingType: "hourly"
reclaimPolicy: "Delete"
classVersion: "2"
gidAllocate: "true"
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: ldaplib
spec:
accessModes:
- ReadWriteMany
resources:
requests:
storage: 50M
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: ldapslapd
spec:
accessModes:
- ReadWriteMany
resources:
requests:
storage: 50M
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: ldapsecauthority
spec:
accessModes:
- ReadWriteMany
resources:
requests:
storage: 50M
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: postgresqldata
spec:
storageClassName: ibmc-file-bronze-gid
accessModes:
- ReadWriteMany
resources:
requests:
storage: 50M
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: isamconfig
spec:
accessModes:
- ReadWriteMany
resources:
requests:
storage: 50M
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: openldap
labels:
app: openldap
spec:
selector:
matchLabels:
app: openldap
replicas: 1
template:
metadata:
labels:
app: openldap
spec:
volumes:
- name: ldaplib
persistentVolumeClaim:
claimName: ldaplib
- name: ldapslapd
persistentVolumeClaim:
claimName: ldapslapd
- name: ldapsecauthority
persistentVolumeClaim:
claimName: ldapsecauthority
- name: openldap-keys
secret:
secretName: openldap-keys
containers:
- name: openldap
image: ibmcom/isam-openldap:9.0.7.0
ports:
- containerPort: 636
env:
- name: LDAP_DOMAIN
value: ibm.com
- name: LDAP_ADMIN_PASSWORD
value: Passw0rd
- name: LDAP_CONFIG_PASSWORD
value: Passw0rd
volumeMounts:
- mountPath: /var/lib/ldap
name: ldaplib
- mountPath: /etc/ldap/slapd.d
name: ldapslapd
- mountPath: /var/lib/ldap.secAuthority
name: ldapsecauthority
- mountPath: /container/service/slapd/assets/certs
name: openldap-keys
# This line is needed when running on Kubernetes 1.9.4 or above
args: [ "--copy-service"]
# useful for debugging startup issues - can run bash, then exec to the container and poke around
# command: [ "/bin/bash"]
# args: [ "-c", "while /bin/true ; do sleep 5; done" ]
# Just this line to get debug output from openldap startup
# args: [ "--loglevel" , "trace","--copy-service"]
---
# for external service access, see https://console.bluemix.net/docs/containers/cs_apps.html#cs_apps_public_nodeport
apiVersion: v1
kind: Service
metadata:
name: openldap
labels:
app: openldap
spec:
ports:
- port: 636
name: ldaps
protocol: TCP
selector:
app: openldap
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: postgresql
labels:
app: postgresql
spec:
selector:
matchLabels:
app: postgresql
replicas: 1
template:
metadata:
labels:
app: postgresql
spec:
securityContext:
runAsNonRoot: true
runAsUser: 70
fsGroup: 0
volumes:
- name: postgresqldata
persistentVolumeClaim:
claimName: postgresqldata
- name: postgresql-keys
secret:
secretName: postgresql-keys
containers:
- name: postgresql
image: ibmcom/isam-postgresql:9.0.7.0
ports:
- containerPort: 5432
env:
- name: POSTGRES_USER
value: postgres
- name: POSTGRES_PASSWORD
value: Passw0rd
- name: POSTGRES_DB
value: isam
- name: POSTGRES_SSL_KEYDB
value: /var/local/server.pem
- name: PGDATA
value: /var/lib/postgresql/data/db-files/
volumeMounts:
- mountPath: /var/lib/postgresql/data
name: postgresqldata
- mountPath: /var/local
name: postgresql-keys
# useful for debugging startup issues - can run bash, then exec to the container and poke around
# command: [ "/bin/bash"]
# args: [ "-c", "while /bin/true ; do sleep 5; done" ]
---
# for external service access, see https://console.bluemix.net/docs/containers/cs_apps.html#cs_apps_public_nodeport
apiVersion: v1
kind: Service
metadata:
name: postgresql
spec:
ports:
- port: 5432
name: postgresql
protocol: TCP
selector:
app: postgresql
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: isamconfig
labels:
app: isamconfig
spec:
selector:
matchLabels:
app: isamconfig
replicas: 1
template:
metadata:
labels:
app: isamconfig
spec:
securityContext:
runAsNonRoot: true
runAsUser: 6000
volumes:
- name: isamconfig
persistentVolumeClaim:
claimName: isamconfig
- name: isamconfig-logs
emptyDir: {}
containers:
- name: isamconfig
image: ibmcom/isam:9.0.7.1_IF4
volumeMounts:
- mountPath: /var/shared
name: isamconfig
- mountPath: /var/application.logs
name: isamconfig-logs
env:
- name: SERVICE
value: config
- name: CONTAINER_TIMEZONE
value: Europe/London
- name: ADMIN_PWD
valueFrom:
secretKeyRef:
name: samadmin
key: adminpw
readinessProbe:
tcpSocket:
port: 9443
initialDelaySeconds: 5
periodSeconds: 10
livenessProbe:
tcpSocket:
port: 9443
initialDelaySeconds: 120
periodSeconds: 20
# command: [ "/sbin/bootstrap.sh" ]
imagePullSecrets:
- name: dockerlogin
---
# for external service access, see https://console.bluemix.net/docs/containers/cs_apps.html#cs_apps_public_nodeport
apiVersion: v1
kind: Service
metadata:
name: isamconfig
spec:
# To make the LMI internet facing, make it a NodePort
type: NodePort
ports:
- port: 9443
name: isamconfig
protocol: TCP
# make this one statically allocated
nodePort: 30442
selector:
app: isamconfig
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: isamwrprp1-v1
labels:
app: isamwrprp1
spec:
selector:
matchLabels:
app: isamwrprp1
version: v1
replicas: 1
template:
metadata:
labels:
app: isamwrprp1
version: v1
spec:
securityContext:
runAsNonRoot: true
runAsUser: 6000
volumes:
- name: isamconfig
emptyDir: {}
- name: isamwrprp1-logs
emptyDir: {}
containers:
- name: isamwrprp1
image: ibmcom/isam:9.0.7.1_IF4
ports:
- containerPort: 443
volumeMounts:
- mountPath: /var/shared
name: isamconfig
- mountPath: /var/application.logs
name: isamwrprp1-logs
env:
- name: SERVICE
value: webseal
- name: INSTANCE
value: rp1
- name: CONTAINER_TIMEZONE
value: Europe/London
- name: AUTO_RELOAD_FREQUENCY
value: "5"
- name: CONFIG_SERVICE_URL
value: https://isamconfig:9443/shared_volume
- name: CONFIG_SERVICE_USER_NAME
value: cfgsvc
- name: CONFIG_SERVICE_USER_PWD
valueFrom:
secretKeyRef:
name: configreader
key: cfgsvcpw
livenessProbe:
exec:
command:
- /sbin/health_check.sh
- livenessProbe
initialDelaySeconds: 10
periodSeconds: 10
timeoutSeconds: 2
readinessProbe:
exec:
command:
- /sbin/health_check.sh
initialDelaySeconds: 10
periodSeconds: 10
timeoutSeconds: 2
imagePullSecrets:
- name: dockerlogin
---
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: isamwrprp1-v2
labels:
app: isamwrprp1
spec:
selector:
matchLabels:
app: isamwrprp1
version: v2
replicas: 1
template:
metadata:
labels:
app: isamwrprp1
version: v2
spec:
securityContext:
runAsNonRoot: true
runAsUser: 6000
volumes:
- name: isamconfig
emptyDir: {}
- name: isamwrprp1-logs
emptyDir: {}
containers:
- name: isamwrprp1
image: ibmcom/isam:9.0.7.1_IF4
ports:
- containerPort: 443
volumeMounts:
- mountPath: /var/shared
name: isamconfig
- mountPath: /var/application.logs
name: isamwrprp1-logs
env:
- name: SERVICE
value: webseal
- name: INSTANCE
value: rp1
- name: CONTAINER_TIMEZONE
value: Europe/London
- name: AUTO_RELOAD_FREQUENCY
value: "5"
- name: CONFIG_SERVICE_URL
value: https://isamconfig:9443/shared_volume
- name: CONFIG_SERVICE_USER_NAME
value: cfgsvc
- name: CONFIG_SERVICE_USER_PWD
valueFrom:
secretKeyRef:
name: configreader
key: cfgsvcpw
livenessProbe:
exec:
command:
- /sbin/health_check.sh
- livenessProbe
initialDelaySeconds: 10
periodSeconds: 10
timeoutSeconds: 2
readinessProbe:
exec:
command:
- /sbin/health_check.sh
initialDelaySeconds: 10
periodSeconds: 10
timeoutSeconds: 2
imagePullSecrets:
- name: dockerlogin
---
# for external service access, see https://console.bluemix.net/docs/containers/cs_apps.html#cs_apps_public_nodeport
apiVersion: v1
kind: Service
metadata:
name: isamwrprp1
spec:
type: NodePort
sessionAffinity: ClientIP
ports:
- port: 443
name: isamwrprp1
protocol: TCP
nodePort: 30443
selector:
app: isamwrprp1
---
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: isamwrpmobile
labels:
app: isamwrpmobile
spec:
selector:
matchLabels:
app: isamwrpmobile
replicas: 1
template:
metadata:
labels:
app: isamwrpmobile
spec:
securityContext:
runAsNonRoot: true
runAsUser: 6000
volumes:
- name: isamconfig
emptyDir: {}
- name: isamwrpmobile-logs
emptyDir: {}
containers:
- name: isamwrpmobile
image: ibmcom/isam:9.0.7.1_IF4
ports:
- containerPort: 443
volumeMounts:
- mountPath: /var/shared
name: isamconfig
- mountPath: /var/application.logs
name: isamwrpmobile-logs
env:
- name: SERVICE
value: webseal
- name: INSTANCE
value: mobile
- name: CONTAINER_TIMEZONE
value: Europe/London
- name: AUTO_RELOAD_FREQUENCY
value: "5"
- name: CONFIG_SERVICE_URL
value: https://isamconfig:9443/shared_volume
- name: CONFIG_SERVICE_USER_NAME
value: cfgsvc
- name: CONFIG_SERVICE_USER_PWD
valueFrom:
secretKeyRef:
name: configreader
key: cfgsvcpw
livenessProbe:
exec:
command:
- /sbin/health_check.sh
- livenessProbe
initialDelaySeconds: 10
periodSeconds: 10
timeoutSeconds: 2
readinessProbe:
exec:
command:
- /sbin/health_check.sh
initialDelaySeconds: 10
periodSeconds: 10
timeoutSeconds: 2
imagePullSecrets:
- name: dockerlogin
---
# for external service access, see https://console.bluemix.net/docs/containers/cs_apps.html#cs_apps_public_nodeport
apiVersion: v1
kind: Service
metadata:
name: isamwrpmobile
spec:
type: NodePort
sessionAffinity: ClientIP
ports:
- port: 443
name: isamwrpmobile
protocol: TCP
nodePort: 30444
selector:
app: isamwrpmobile
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: isamruntime-v1
labels:
app: isamruntime
spec:
selector:
matchLabels:
app: isamruntime
version: v1
replicas: 1
template:
metadata:
labels:
app: isamruntime
version: v1
spec:
securityContext:
runAsNonRoot: true
runAsUser: 6000
volumes:
- name: isamconfig
emptyDir: {}
- name: isamruntime-logs
emptyDir: {}
containers:
- name: isamruntime
image: ibmcom/isam:9.0.7.1_IF4
ports:
- containerPort: 443
volumeMounts:
- mountPath: /var/shared
name: isamconfig
- mountPath: /var/application.logs
name: isamruntime-logs
env:
- name: SERVICE
value: runtime
- name: CONTAINER_TIMEZONE
value: Europe/London
- name: AUTO_RELOAD_FREQUENCY
value: "5"
- name: CONFIG_SERVICE_URL
value: https://isamconfig:9443/shared_volume
- name: CONFIG_SERVICE_USER_NAME
value: cfgsvc
- name: CONFIG_SERVICE_USER_PWD
valueFrom:
secretKeyRef:
name: configreader
key: cfgsvcpw
livenessProbe:
exec:
command:
- /sbin/health_check.sh
- livenessProbe
initialDelaySeconds: 10
periodSeconds: 10
timeoutSeconds: 2
readinessProbe:
exec:
command:
- /sbin/health_check.sh
initialDelaySeconds: 10
periodSeconds: 10
timeoutSeconds: 2
imagePullSecrets:
- name: dockerlogin
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: isamruntime-v2
labels:
app: isamruntime
spec:
selector:
matchLabels:
app: isamruntime
version: v2
replicas: 1
template:
metadata:
labels:
app: isamruntime
version: v2
spec:
securityContext:
runAsNonRoot: true
runAsUser: 6000
volumes:
- name: isamconfig
emptyDir: {}
- name: isamruntime-logs
emptyDir: {}
containers:
- name: isamruntime
image: ibmcom/isam:9.0.7.1_IF4
ports:
- containerPort: 443
volumeMounts:
- mountPath: /var/shared
name: isamconfig
- mountPath: /var/application.logs
name: isamruntime-logs
env:
- name: SERVICE
value: runtime
- name: CONTAINER_TIMEZONE
value: Europe/London
- name: AUTO_RELOAD_FREQUENCY
value: "5"
- name: CONFIG_SERVICE_URL
value: https://isamconfig:9443/shared_volume
- name: CONFIG_SERVICE_USER_NAME
value: cfgsvc
- name: CONFIG_SERVICE_USER_PWD
valueFrom:
secretKeyRef:
name: configreader
key: cfgsvcpw
livenessProbe:
exec:
command:
- /sbin/health_check.sh
- livenessProbe
initialDelaySeconds: 10
periodSeconds: 10
timeoutSeconds: 2
readinessProbe:
exec:
command:
- /sbin/health_check.sh
initialDelaySeconds: 10
periodSeconds: 10
timeoutSeconds: 2
imagePullSecrets:
- name: dockerlogin
---
apiVersion: v1
kind: Service
metadata:
name: isamruntime
spec:
ports:
- port: 443
name: isamruntime
protocol: TCP
selector:
app: isamruntime
---
我不知道为什么CPU负载显示为未知。我有没有错过一步或犯了什么错误？有人能帮忙吗？
问候普拉南
根据显示的问题，您似乎没有在delployment.yaml文件中设置资源限制。
如果你去执行kubectl explain deployment，那么你会在容器中看到规范-
resources:
limits:
cpu:
memory:
requests:
cpu:
memory:
如果你在上面提到的密钥上加上值，那么hpa问题肯定会得到的解决
您在定义应用程序部署时是否指定了resources块？我不记得它是在哪里说的，但我有一次遇到这个案子时忘记了。
有关管理容器资源的详细信息：https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/