k8s全方位监控-prometheus-alertmanager部署
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1、alertmanager告警插件部署
[root@VM_0_48_centos prometheus]# cat alertmanager-pvc.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: alertmanager
namespace: kube-system
labels:
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: EnsureExists
spec:
storageClassName: managed-nfs-storage #必须动态PV，需要改为自己的名字
accessModes:
- ReadWriteOnce
resources:
requests:
[root@VM_0_48_centos prometheus]# cat alertmanager-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: alertmanager
namespace: kube-system
labels:
k8s-app: alertmanager
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
version: v0.14.0
spec:
replicas: 1
selector:
matchLabels:
k8s-app: alertmanager
version: v0.14.0
template:
metadata:
labels:
k8s-app: alertmanager
version: v0.14.0
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ‘‘
spec:
priorityClassName: system-cluster-critical
containers:
- name: prometheus-alertmanager
image: "prom/alertmanager:v0.14.0"
imagePullPolicy: "IfNotPresent"
args:
- --config.file=/etc/config/alertmanager.yml
- --storage.path=/data
- --web.external-url=/
ports:
- containerPort: 9093
readinessProbe:
httpGet:
path: /#/status
port: 9093
initialDelaySeconds: 30
timeoutSeconds: 30
volumeMounts:
- name: config-volume
mountPath: /etc/config
- name: storage-volume
mountPath: "/data"
subPath: ""
resources:
limits:
cpu: 10m
memory: 50Mi
requests:
cpu: 10m
memory: 50Mi
- name: prometheus-alertmanager-configmap-reload
image: "jimmidyson/configmap-reload:v0.1"
imagePullPolicy: "IfNotPresent"
args:
- --volume-dir=/etc/config
- --webhook-url=http://localhost:9093/-/reload
volumeMounts:
- name: config-volume
mountPath: /etc/config
readOnly: true
resources:
limits:
cpu: 10m
memory: 10Mi
requests:
cpu: 10m
memory: 10Mi
volumes:
- name: config-volume
configMap:
name: alertmanager-config
- name: storage-volume
persistentVolumeClaim:
claimName: alertmanager
[root@VM_0_48_centos prometheus]# cat alertmanager-service.yaml
apiVersion: v1
kind: Service
metadata:
name: alertmanager
namespace: kube-system
labels:
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
kubernetes.io/name: "Alertmanager"
spec:
ports:
- name: http
port: 80
protocol: TCP
targetPort: 9093
selector:
k8s-app: alertmanager
type: "ClusterIP"
2、prometheus 配置告警规则通过服务名字调用altermanager 告警。
查看alertmanager服务是否正常
[root@VM_0_48_centos prometheus]# kubectl
get svc -n kube-system
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
alertmanager ClusterIP 10.0.0.176 <none> 80/TCP 46h
原文：https://www.cnblogs.com/xiajq/p/11347217.html
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