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Version: Cloud

Monitor Redis Sentinel

Overview​

Redis Sentinel on Instances is monitored using sfAgent Configured with Redisdb Plugin. When Sentinel is Configured.

Redis sentinel plugin was tested with 6.2.6 and 5.0.7 sentinel versions with ubuntu 20.04.4 LTS.

note

The configurations given below apply only to the Redis Sentinel setup on an instance.

Metrics plugin​

Collects metric data organized in following  documentType under metrics index: 

  • redisDetails
  • redisStat
  • redisPersistence
  • masterReplication
  • slaveReplication

Logger plugin​

Collects general logs and slow query logs. General logs are sent to log index whereas slow queries are sent to metrics index under documentType:redisSlowLogs

Pre-requisites ​

Enable Slow Logs  ​

In redis.cnf file, uncomment and configure the variables shown below: 

slowlog-log-slower-than= 1   
slowlog-max-len=100

Or, login to redis with root user and execute below commands  

config set slowlog-log-slower-than= 1;   
config set slowlog-max-len=100;

Configuration ​

Refer to sfAgent to install and automatically generate plugin configurations. User can also manually add the configuration shown below to config.yaml under /opt/sfagent/directory  

Metrics:
  plugins:
    - name: redisdb 
    enabled: true   
      interval: 60   
      config:   
        documentsTypes:   
          - keyspaceStat   
          - redisDetails   
          - redisPersistence 
          - redisStat 
          - slowLogs 
          - masterReplication 
          - slaveReplication 
        password: < password >
        port: 6379   
        user: < username >
        sentinelIp: < Ipaddress >
        sentinelPort: 26379 
        sentinelMaster: < Mastername > 
logging:   
  plugins:   
    - name: redis-sentinel   
      enabled: true   
      config:   
         log_path: /var/log/redis/sentinel.log
 

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 RedisReplication to the application dashboard.