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Troubleshooting Disk Utilization

The ability to diagnose and resolve issues on a Linux system is a skill that every administrator needs to cultivate. In this lab, we cover using various reporting and monitoring utilities to troubleshoot issues with disk utilization on the system.

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Path Info

Level
Clock icon Advanced
Duration
Clock icon 30m
Published
Clock icon Mar 13, 2020

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Table of Contents

  1. Challenge

    Install the Monitoring and Reporting Utilities (`sysstat`)

    Install the sysstat package using the following commands:

    sudo -i
yum install -y sysstat

  2. Challenge

    Use the Monitoring and Reporting Utilities to Diagnose the Issue

    This is a list of possible steps to take in order to find the source of the issue. All of these can be used, but they are not all required. Once located, the offending process should be copied to /home/cloud_user/.

    top
vmstat 1 4
iostat -y 1 3
iostat -dy -p xvdg 1 3
lsblk
lsof | grep “mount point or device major,minor number”
ps -ef | grep (PID of dalinar.sh)
pstree -p (PID of dalinar.sh)
cp /mnt/roshar/dalinar.sh /home/cloud_user/

  3. Challenge

    Terminate the Offending Process

    Once the PID of the offending process has been located (dalinar.sh), use the kill command to terminate it.

    kill -15 (PID of dalinar.sh)
A Cloud Guru - Labs - Troubleshooting Disk Utilization
Author
A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

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