Virtual Machine with performance degraded

Scenario

In this scenario, a Virtual Machine named exercise4 is currently in a running state. The development team has reported performance issues with an application hosted on this VM.

Your task is to investigate the problem by analyzing the VM’s resource usage, including CPU, memory, and other relevant metrics. You are permitted to adjust the VM’s compute resources as needed to resolve the issue; however, a reboot is not permitted.

Analyzing CPU utilization within the virtual machine

04 break01

Analyzing CPU utilization with oc client

04 break02

  • The goal is to identify bottlenecks or misconfigurations and implement optimizations to enhance the application’s efficiency within the virtualized infrastructure.

  • Do not kill any process running inside the virtual machine

  • Do not reboot the virtual machine
Command to check the CPU usage on Virtual Machine
virtctl ssh lab-user@exercise4 \
--command "top -b -n 1 | grep 'Cpu(s)' | awk '{print \$2 \"% Used\"}'"

Executing the lab script

In this exercise setup, ensure you are logged in to OpenShift cluster as user userx.

OpenShift login command
{login_command}

Once connected to the OCP cluster, run the command to break the lab.

Breaking the exercise
lab break exercise4

Console

After the break, you can log in to the OpenShift web console using your username and password or continue using the oc Command line at bastion to begin the troubleshooting process.

{openshift_console_url}

Username
userx
Password
{password}