Monitoring Redis

This guide helps you configure Monitoring to monitor Redis.

Redis is an open source advanced key-value store. It is often referred to as a data structure server since values can contain strings, hashes, lists, sets and sorted sets. For more information, visit redis.io.

Discovery

Monitoring discovers Redis services running in your Cloud Platform project if you have the following:

  • VM instances with redis in their names.
  • Firewall rules that open port 6379.

To see the metrics for Redis, go to Monitoring:

Go to Monitoring

  • If Resources appears in the navigation pane, select Resources and then select Redis.

  • Otherwise, select Dashboards and then select the Redis dashboard from the list.

Configuring Redis monitoring

The Monitoring agent uses the hiredis client library to monitor Redis. After installing Redis, install hiredis by running the following commands:

  • RHEL and CentOS

        sudo yum install epel-release
        sudo yum install hiredis
    
  • Ubuntu 18.04 LTS, 16.04 LTS, and Debian 9

        sudo apt-get install libhiredis0.13
    
  • Other Debian and Ubuntu

        sudo apt-get install libhiredis0.10
    
  • SLES

        sudo zypper install libhiredis0_13
    

Configuring Monitoring

To monitor Redis, perform the following actions on your VM instance after installing the monitoring agent:

  1. Install the Redis configuration file, redis.conf, by running the following command:

    (cd /opt/stackdriver/collectd/etc/collectd.d/ && sudo curl -O https://raw.githubusercontent.com/Stackdriver/stackdriver-agent-service-configs/master/etc/collectd.d/redis.conf)
    

    If you are using a nonstandard host or port for Redis, as root, edit redis.conf by following the instructions at the top of the file.

  2. Restart the monitoring agent by running the following command:

    sudo service stackdriver-agent restart
    

For more information on the collectd redis plugin, see Plugin:Redis.

Redis metrics

The full list of metrics the Redis plugin monitors is at Agent metrics: redis. The actual metrics collected, and the metrics available in the Monitoring menus, can vary.

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