williamcaban

from datasets import load_dataset

# Combine 'question' and 'answer' into a single 'text' field
def combine_qa(local_dataset):
    local_dataset['text'] = f"User: {local_dataset['Question']}\nAssistant: {local_dataset['Answer']}"
    return local_dataset

####################################################################################
# main
####################################################################################

williamcaban

#
import sys, json
from pathlib import Path
from datetime import datetime

import pandas as pd

TSTAMP = datetime.now().replace(microsecond=0).isoformat().replace(":", '_')
ILABGEN = "granite-7b-lab-7b-Q4_K_M"+f"_{TSTAMP}"
DEBUG = True

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williamcaban

Simulate Bare-Metal IPMI for VMs in RHEL8 Libvirt

• Install the Virtual BMC package in the machine to use as the vBMC server. Note1: When using OpenStack repos the python3-virtualbmc RPM might be available. These instrucctions do not use that package.

  pip3 install virtualbmc
  

  • The vBMC server can be running in any machine. When using a remote libvirt server it is recommended to have passwordless authentication from the vBMC server to the libvirt machines.
  • For this document the vBMC Server export vBMCServerIP=192.168.1.13

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Using Sushy Tools with Libvirt

• Add linux user to libvirt group

sudo usermod -a -G libvirt <your-user>
sudo -y install libvirt-devel gcc python3-devel

• Login and validate user can execute virsh commands

williamcaban

---
apiVersion: ingressnodefirewall.openshift.io/v1alpha1
kind: IngressNodeFirewallConfig
metadata:
  name: ingressnodefirewallconfig
  namespace: openshift-ingress-node-firewall
spec:
  nodeSelector:
    node-role.kubernetes.io/control-plane: ""
---

williamcaban

Export RHV/Ovirt VM to qcow2 format

1. Configure export domain in RHV or Ovirt

2. Export the VM to the export domain. A new directory with the vdisk uuid will be created and the VM will be exported to it.

   • A sample export /exportfs/export_domain/<vdisk_uuid>/images/<disk_id>

3. Mount the export domain ito a Linux mcahine and go into the <vdisk_uuid>/images

4. In the folder there iwll be a file with a uuid representing the <disk_id> and a meta file

5. Use qemu-img convert to convert to qcow2 format

williamcaban

#!/bin/bash
set -euoE pipefail

# Redfish commands related to Virtual Media.
# Redfish doc reference: https://www.supermicro.com/manuals/other/RedfishRefGuide.pdf

export BMC_ADDRESS=''
export ISO_IMAGE=http://192.168.117.9:8080/ocp4-rwn-1-small.iso
export username_password='Administrator:superuser'

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Troubleshooting CPU isolation

• Identifying cores assigned to a particular container

ID=$(crictl ps --label io.kubernetes.container.name=<name-of-container> -o json | jq -r '.containers[0].id')
PID=$(crictl inspect $ID | jq -r '.info.pid')
taskset -pc $PID 

Troubleshooting

williamcaban

# If $USERNAME and $PASSWORD are not defined
# in the environment prompt for them
if [ -z "${USERNAME+x}" ]; then
    read -p 'Username: ' USERNAME
fi
if [ -z "${PASSWORD+x}" ]; then
    read -sp 'Password: ' PASSWORD
fi

echo -e "\nAttempting to find the K8s API Server and token"