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Send data via Golang Metrics to your Logstash instance provided by Logit.io

Golang Metrics

Collect and ship Golang server metrics to Logstash and Elasticsearch.

Metricbeat is a lightweight shipper that helps you monitor your Golang servers by collecting metrics running on the Golang server. Configure Metricbeat using the pre-defined examples below to collect and ship Go programming language service metrics and statistics to Logstash or Elasticsearch.

Step 1 - Install MetricbeatCopy

deb (Debian/Ubuntu/Mint)

curl -L -O https://artifacts.elastic.co/downloads/beats/metricbeat/metricbeat-oss-7.8.1-amd64.deb
sudo dpkg -i metricbeat-oss-7.8.1-amd64.deb

rpm (CentOS/RHEL/Fedora)

curl -L -O https://artifacts.elastic.co/downloads/beats/metricbeat/metricbeat-oss-7.8.1-x86_64.rpm
sudo rpm -vi metricbeat-oss-7.8.1-x86_64.rpm

macOS

curl -L -O https://artifacts.elastic.co/downloads/beats/metricbeat/metricbeat-oss-7.8.1-darwin-x86_64.tar.gz
tar xzvf metricbeat-oss-7.8.1-darwin-x86_64.tar.gz

Windows

  • Download the metricbeat Windows zip file from the official downloads page.
  • Extract the contents of the zip file into C:\Program Files.
  • Rename the metricbeat-<version>-windows directory to metricbeat.
  • Open a PowerShell prompt as an Administrator (right-click the PowerShell icon and select Run As Administrator). If you are running Windows XP, you may need to download and install PowerShell.
  • Run the following commands to install metricbeat as a Windows service:
cd 'C:\Program Files\metricbeat'
.\install-service-metricbeat.ps1
If script execution is disabled on your system, you need to set the execution policy for the current session to allow the script to run. For example: PowerShell.exe -ExecutionPolicy UnRestricted -File .\install-service-metricbeat.ps1.
My OS isn't here! Don't see your system? Check out the official downloads page for more options (including 32-bit versions).

Step 2 - Locate configuration fileCopy

deb/rpm /etc/metricbeat/metricbeat.yml
mac/win <EXTRACTED_ARCHIVE>/metricbeat.yml

Step 3 - Configure outputCopy

We'll be shipping to Logstash so that we have the option to run filters before the data is indexed.
Comment out the elasticsearch output block.

## Comment out elasticsearch output
#output.elasticsearch:
#  hosts: ["localhost:9200"]

Uncomment and change the logstash output to match below.

output.logstash:
    hosts: ["your-logstash-host:your-ssl-port"]
    loadbalance: true
    ssl.enabled: true

Step 4 - Validate configurationCopy

Let's check the configuration file is syntactically correct by running metricbeat directly inside the terminal. If the file is invalid, metricbeat will print an error loading config file error message with details on how to correct the problem.

deb/rpm

sudo metricbeat -e -c /etc/metricbeat/metricbeat.yml

macOS

cd <EXTRACTED_ARCHIVE>
./metricbeat -e -c metricbeat.yml

Windows

cd <EXTRACTED_ARCHIVE>
.\metricbeat.exe -e -c metricbeat.yml

Step 5 - Enable moduleCopy

There are several built in metricbeat modules you can use. To enable the golang module, run the following:

deb/rpm

metricbeat modules list
metricbeat modules enable golang

macOS

./metricbeat modules list
./metricbeat modules enable golang

Windows

PS > .\metricbeat.exe modules enable golang

The golang module collects metrics by submitting HTTP GET requests to golang-expvar-api.

Step 6 - Configure moduleCopy

Each module has its own configuration file where different metricsets can be enabled / disabled. Locate the configuration file for the Golang module.

deb/rpm /etc/metricbeat/modules.d/golang.yml

mac/win ~/<EXTRACTED_ARCHIVE>/modules.d/golang.yml

By default the following metricsets are disabled. To enable or disable a metric simply comment or uncomment the line out.

- module: golang
  #metricsets:
   # - expvar
   # - heap
  period: 10s
  hosts: ["localhost:6060"]
  heap.path: "/debug/vars"
  expvar:
    namespace: "example"
    path: "/debug/vars"

Step 7 - Start MetricbeatCopy

Ok, time to start gathering metrics!

deb/rpm

sudo systemctl enable metricbeat
sudo systemctl start metricbeat

macOS

./metricbeat

Windows

PS C:\Program Files\Metricbeat> Start-Service metricbeat

Step 8 - Golang Module DashboardCopy

The Golang module comes with a predefined Kibana dashboard. To view your dashboards for any of your Logit stacks, launch Kibana and choose Dashboards.

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