ruzickap

# Install blackbox-exporter
apt update
apt install -y prometheus-blackbox-exporter


# Chnage the garfana agent config file /etc/grafana-agent.yaml
cat > /etc/grafana-agent.yaml << EOF
integrations:
  agent:
    enabled: true

ruzickap

ZONE_NAME="test.example.com"

ZONE_ID=$(aws route53 list-hosted-zones --query "HostedZones[?Name==\`${ZONE_NAME}.\`].Id" --output text)
aws route53 list-resource-record-sets --hosted-zone-id "${ZONE_ID}" | jq -c '.ResourceRecordSets[] | select (.Type != "SOA" and .Type != "NS")' |
while read -r RESOURCERECORDSET; do
  aws route53 change-resource-record-sets \
    --hosted-zone-id "${CLUSTER_FQDN_ZONE_ID}" \
    --change-batch '{"Changes":[{"Action":"DELETE","ResourceRecordSet": '"${RESOURCERECORDSET}"' }]}' \
    --output text --query 'ChangeInfo.Id'
done

ruzickap

GET_NODES=$(kubectl get node -o=custom-columns='NAME:metadata.name' | grep -v ^NAME)

for NODE in ${GET_NODES}; do
  echo -en "${NODE}:\t"
  kubectl get po --field-selector=status.phase=Running --all-namespaces -o json | jq -r ".items[] | select(.spec.nodeName==\"${NODE}\") | .metadata.name" | wc -l
done

ruzickap

#!/bin/bash -eu

HEADSET=$(pacmd list-sinks | sed -n 's/.*name: <\(.*output.*Headset.*\)>/\1/p')
HEADSET_MIC=$(pacmd list-sources | sed -n 's/.*name: <\(.*input.*Headset.*\)>/\1/p')

pacmd "set-default-sink ${HEADSET}"
pacmd "set-default-source ${HEADSET_MIC}"

pactl set-sink-mute "${HEADSET}" 0
pactl set-sink-volume "${HEADSET}" 80%

ruzickap

#!/bin/bash -eux

DEVICE="sdc"

lsblk --output NAME,MODEL,MODEL | grep ${DEVICE}

read -r -p "Press enter to remove everything from ${DEVICE}"

curl -L https://downloads.raspberrypi.org/raspios_lite_arm64/images/raspios_lite_arm64-2022-09-26/2022-09-22-raspios-bullseye-arm64-lite.img.xz | xzcat | sudo dd of=/dev/${DEVICE} bs=4M
sudo partprobe /dev/${DEVICE}

ruzickap

# You have defined the "cna.example.cloud" zone in Route53
# You want to create subdomain "${USER}-k8s.cna.example.cloud" and configure proper delegation form parrent zone

echo "* Create DNS zone ${USER}-k8s.cna.example.cloud"

aws route53 create-hosted-zone --output json \
  --name ${USER}-k8s.cna.example.cloud \
  --caller-reference "$(date)" \
  --hosted-zone-config="{\"Comment\": \"Created by ${USER}@example.com\", \"PrivateZone\": false}" | jq

ruzickap

GITHUB_USERNAME="${GITHUB_USERNAME:-ruzickap}"
DESTINATION_DIRECTORY="${DESTINATION_DIRECTORY:-/root/.ssh}"

[[ ! -d "${DESTINATION_DIRECTORY}" ]] && mkdir -v --mode=0700 "${DESTINATION_DIRECTORY}"
wget "https://github.com/${GITHUB_USERNAME}.keys" -O "${DESTINATION_DIRECTORY}/authorized_keys"
chmod 0600 "${DESTINATION_DIRECTORY}/authorized_keys"

ruzickap

kubectl get events --sort-by=.metadata.creationTimestamp

kubectl logs -n monitoring prometheus-prometheus-operator-prometheus-0 --all-containers

ruzickap

git clone git@github.com:ruzickap/check_urls.git
cd check_urls
mkdir -p .github/workflows

cat > .github/workflows/periodic-broken-link-checks.yml << \EOF
name: periodic-broken-link-checks

on:
  schedule:
    - cron: '0 0 * * *'

ruzickap

# Make sure you are using gpg2
git config --global gpg.program gpg2

# Clone empty repository
git clone git@github.com:ruzickap/terraform-gitops.git

# Configure a repository to use git-crypt
cd terraform-gitops
git-crypt init