Monitor Redis DB in Kubernetes

Overview

Redis running in kubernetes can be monitored in SnappyFlow using following steps.

Redis monitoring with sfKubeAgent

sfKubeAgent is run as a sidecar with the configMap shown below. The config map instantiates plugins for metrics.

apiVersion: v1
kind: ConfigMap
metadata:
  name: redis-config-map
data:
  redis-config: |
    maxmemory 2mb
    maxmemory-policy allkeys-lru
    cluster-enabled yes
  config.yaml: |-
    key: <profile_key> 
    metrics:
        plugins:
        - name: kube-sfagent-redisdb
          enabled: true
          interval: 30
          config:
            documentsTypes:
              - keyspaceStat
              - redisDetails
              - redisPersistenc
              - redisStat
              - slowLogs
            password: "a-very-complex-password-here"
            port: 6379
            user: "admin"
 

The example of Redis pod with redis cluster and sfKubeAgent containers is shown below

you can change redis container version and configuration based on customer usecase

apiVersion: v1
kind: Pod
metadata:
  name: redis
  labels:
    snappyflow/appname: <app_name> 
    snappyflow/projectname: <project_name>
spec:
  containers:
  - name: redis
    image: redis:5.0.4
    command:
      - redis-server
      - "/redis-master/redis.conf"
    env:
    - name: MASTER
      value: "true"
    ports:
    - containerPort: 6379
    resources:
      limits:
        cpu: "0.1"
    volumeMounts:
    - mountPath: /redis-master-data
      name: data
    - mountPath: /redis-master
      name: config
  - name: sfagent-container
    image: snappyflowml/sfagent:latest
    imagePullPolicy: Always
    command:
      - /app/sfagent
      - -enable-console-log
    env:
      - name: APP_NAME
        value: <app_name>
      - name: PROJECT_NAME
        value: <project_name>
    volumeMounts:
      - name: configmap-sfkubeagent
        mountPath: /opt/sfagent/config.yaml
        subPath: config.yaml
  volumes:
  - name: data
    emptyDir: {}
  - name: config
    configMap:
      name: redis-config-map
      items:
      - key: redis-config
        path: redis.conf
  - name: configmap-sfkubeagent
    configMap:
      name: redis-config-map
      items:
      - key: config.yaml
        path: config.yaml

Viewing data and dashboards

• Data generated by plugin can be viewed in browse data page inside the respective application under plugin=redisdb  and  documentType=serverDetails 
• Dashboard for this data can be instantiated by Importing dashboard template RedisDB to the application dashboard