Installing tcollector on Fedora CoreOS Latest

In this tutorial, we will go through the steps required to install tcollector on the latest version of Fedora CoreOS. Tcollector is a data collection framework that is used to collect system statistics and send them to OpenTSDB.

Prerequisites

  • Access to a Fedora CoreOS Latest instance with root privileges
  • A working internet connection
  • OpenJDK 8 or above installed on the system

Step 1: Install necessary packages

Before proceeding with the installation of tcollector, let's first make sure that all necessary packages are installed on the system.

Run the following command to install the required packages:

sudo dnf install -y git python3-setuptools gcc python3-devel

This will install the following packages:

  • git: Required to clone tcollector from GitHub
  • python3-setuptools: Required to install tcollector
  • gcc: Required to compile and install certain Python modules
  • python3-devel: Required to build Python modules that have C extensions

Step 2: Clone tcollector repository

Next, we will clone the tcollector repository from GitHub.

Run the following command to clone the repository:

sudo git clone https://github.com/opentsdb/tcollector.git /opt/tcollector

This will clone the tcollector repository to the /opt/tcollector directory on your system.

Step 3: Install tcollector

To install tcollector, navigate to the /opt/tcollector directory and run the following command:

sudo /opt/tcollector/build.sh

This will compile and install the necessary Python modules and scripts required by tcollector.

Step 4: Configure tcollector

Once tcollector has been installed on your system, you need to configure it.

To configure tcollector, create a configuration file in the /opt/tcollector/collectors/ directory. For example, let's create a configuration file called cpu.cfg:

sudo nano /opt/tcollector/collectors/cpu.cfg

In this file, you can configure which metrics you want to collect and how often you want tcollector to send the data to OpenTSDB.

For example, to collect the CPU usage every 10 seconds, add the following line to your cpu.cfg file:

/etc/tcollector/collectors/0/60/cpu/percent="*/10 * * * * root /usr/bin/env python3 /opt/tcollector/collectors/cpu.py"

Note that the /etc/tcollector/collectors/0/60/cpu/percent is the metric name that will be used in OpenTSDB, and /opt/tcollector/collectors/cpu.py is the script that will collect the CPU usage.

Save and close the file when you are done.

Step 5: Test tcollector

To test tcollector, run the following command:

sudo /opt/tcollector/startstop start

This will start tcollector and begin collecting system statistics.

You can verify that tcollector is working by checking the logs in the /var/log/tcollector/ directory.

Conclusion

In this tutorial, we have shown you how to install tcollector on the latest version of Fedora CoreOS. By following the steps outlined in this tutorial, you should now be able to collect system statistics and send them to OpenTSDB using tcollector.