编写yaml文件
[root@holymaster1 redis_yaml]# cat redis.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: redis
namespace: kube-system
spec:
replicas: 1
selector:
matchLabels:
app: redis
template:
metadata:
labels:
app: redis
spec:
containers:
- name: redis
image: redis:4
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 6379
- name: redis-exporter
image: oliver006/redis_exporter:latest
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 9121
---
kind: Service
apiVersion: v1
metadata:
name: redis
namespace: kube-system
annotations:
prometheus.io/scrape: "true"
prometheus.io/port: "9121"
spec:
selector:
app: redis
ports:
- name: redis
port: 6379
targetPort: 6379
- name: prom
port: 9121
targetPort: 9121
执行以上yaml文件
kubectl apply -f redis.yaml
redis 这个 Pod 中包含了两个容器，一个就是 redis 本身的主应用，另外一个容器就是 redis_exporter
由于Redis服务的metrics接口在redis-exporter 9121上，所以我们添加了prometheus.io/port=9121这样的annotation,在prometheus就会自动发现redis了
接下来我们刷新一下Redis的Service配置
[root@holymaster1 redis_yaml]# kubectl apply -f redis.yaml
deployment.apps/redis unchanged
service/redis created
