Apache Cassandra
Ship your Apache Cassandra Metrics via Telegraf to your Logit.io Stack
Follow the steps below to send your observability data to Logit.io
Metrics
Configure Telegraf to ship Apache Cassandra metrics to your Logit.io stacks via Logstash.
Install Integration
Install Telegraf
This integration allows you to configure a Telegraf agent to send your metrics to Logit.io.
Choose the installation method for your operating system:
When you paste the command below into Powershell it will download the Telegraf zip file.
Once that is complete, press Enter again and the zip file will be extracted into C:\Program Files\InfluxData\telegraf\telegraf-1.34.1.
wget https://dl.influxdata.com/telegraf/releases/telegraf-1.34.1_windows_amd64.zip -UseBasicParsing -OutFile telegraf-1.34.1_windows_amd64.zip
Expand-Archive .\telegraf-1.34.1_windows_amd64.zip -DestinationPath 'C:\Program Files\InfluxData\telegraf'or in Powershell 7 use:
# Download the Telegraf ZIP file
Invoke-WebRequest -Uri "https://dl.influxdata.com/telegraf/releases/telegraf-1.34.1_windows_amd64.zip" `
-OutFile "telegraf-1.34.1_windows_amd64.zip" `
-UseBasicParsing
# Extract the contents of the ZIP file
Expand-Archive -Path ".\telegraf-1.34.1_windows_amd64.zip" `
-DestinationPath "C:\Program Files\InfluxData\telegraf"Configure the Telegraf input plugin
The configuration file below is pre-configured to scrape the system metrics from your hosts, add the following code to the configuration file /etc/telegraf/telegraf.conf from the previous step.
# Read Cassandra metrics through Jolokia
[[inputs.cassandra]]
context = "/jolokia/read"
## List of cassandra servers exposing jolokia read service
servers = ["myuser:[email protected]:8778","10.10.10.2:8778",":8778"]
## List of metrics collected on above servers
## Each metric consists of a jmx path.
## This will collect all heap memory usage metrics from the jvm and
## ReadLatency metrics for all keyspaces and tables.
## "type=Table" in the query works with Cassandra3.0. Older versions might
## need to use "type=ColumnFamily"
metrics = [
"/java.lang:type=Memory/HeapMemoryUsage",
"/org.apache.cassandra.metrics:type=Table,keyspace=*,scope=*,name=ReadLatency"
]Read more about how to configure data scraping and configuration options for Apache Cassandra (opens in a new tab)
Configure The Output plugin
Once you have generated the configuration file, you need to set up the output plug-in to allow Telegraf to transmit your data to Logit.io in Prometheus format. This can be accomplished by incorporating the following code into your configuration file:
[[inputs.tail]]
name_override = "nginxlog"
files = ["<Nginx installation directory>/logs/access.log"]
from_beginning = true
pipe = false
data_format = "grok"
grok_patterns = ["%{COMBINED_LOG_FORMAT}"]
[[outputs.http]]
url = "https://@metricsUsername:@metricsPassword@@metrics_id-vm.logit.io:@vmAgentPort/api/v1/write"
data_format = "prometheusremotewrite"
[outputs.http.headers]
Content-Type = "application/x-protobuf"
Content-Encoding = "snappy"Remember to replace <Nginx installation directory> with the directory where your Nginx is located.
Start Telegraf
From the location where Telegraf was installed (C:\Program Files\InfluxData\telegraf\telegraf-1.34.1) run the program
providing the chosen configuration file as a parameter:
.\telegraf.exe --config telegraf.confOnce Telegraf is running you should see output similar to the following, which confirms the inputs, output and basic configuration the application has been started with:
View your metrics
Data should now have been sent to your Stack.
View My DataIf you don't see take a look at How to diagnose no data in Stack below for how to diagnose common issues.
How to diagnose no data in Stack
If you don't see data appearing in your stack after following this integration, take a look at the troubleshooting guide for steps to diagnose and resolve the problem or contact our support team and we'll be happy to assist.
Telegraf Apache Cassandra Overview
In order to efficiently monitor and analyze Apache Cassandra metrics in a distributed environment, it's essential to utilize a trustworthy and effective metrics management solution. Telegraf, an open-source metrics collection agent, fits this role perfectly, capable of extracting Apache Cassandra metrics from a multitude of sources, including operational Cassandra clusters, databases, and other relevant applications.
Telegraf provides an extensive range of input plugins, allowing users to gather metrics from diverse sources such as CPU usage, memory consumption, network activity, and more. For storing and querying these collected metrics, organizations can turn to Prometheus, an open-source monitoring and alerting system noted for its flexible querying language and powerful graphical data visualization capabilities.
To ship Apache Cassandra metrics from Telegraf to Prometheus, organizations need to configure Telegraf to output metrics in the Prometheus format, and then arrange for Prometheus to scrape these metrics from the Telegraf server. This process involves configuring Telegraf to accumulate Apache Cassandra metrics, rendering them in the Prometheus format, setting up Prometheus to retrieve these metrics from the Telegraf server, and then visually interpreting the data using Prometheus's dynamic querying and graphical visualization tools.
Once the metrics are successfully incorporated into Prometheus, further analysis and visualization can be conducted using Grafana. Grafana is an open-source platform renowned for its monitoring and observability capabilities, and is fully compatible with Prometheus. It enables users to construct dynamic and interactive dashboards for a deeper understanding of the metrics data, offering a more comprehensive view of performance trends and potential issues.
If you need any further assistance with shipping your log data to Logit.io we're here to help you get started. Feel free to get in contact with our support team by sending us a message via live chat & we'll be happy to assist.