Script to install multiple github runners

install_multiple_github_runners.sh

#!/bin/bash
set -e

# Set the number of runners to create at the bottom of script

# Required ENV:
# export MACHINE_NAME=whimby
# export GITHUB_PERSONAL_ACCESS_TOKEN=xxxx
# export RUNNER_LABELS=self-hosted,Linux,X64


install_github_runner() {
  RUNNER_NAME=$1
  USER=$(who am i | awk '{print $1}')
  FOLDER=/home/$USER/actions-runner-$RUNNER_NAME
  mkdir $FOLDER && cd $FOLDER
  LATEST_VERSION=$(curl -I -v -s https://github.com/actions/runner/releases/latest 2>&1 | perl -ne 'next unless s/^< location: //; s{.*/v}{}; s/\s+//; print')
  curl -sL https://github.com/actions/runner/releases/download/v$LATEST_VERSION/actions-runner-linux-x64-$LATEST_VERSION.tar.gz \
      -o actions-runner-linux-x64-$LATEST_VERSION.tar.gz
  tar xzf ./actions-runner-linux-x64-$LATEST_VERSION.tar.gz

  export RUNNER_ALLOW_RUNASROOT=1
  export DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=1
  DATE=$(date '+%Y%m%d')
  HASH=$(openssl rand -hex 2)
  echo "Runner Labels: $RUNNER_LABELS"
  ACTIONS_RUNNER_INPUT_TOKEN=$(curl -s -X POST -H "Authorization: token $GITHUB_PERSONAL_ACCESS_TOKEN" -H 'Accept: application/vnd.github.v3+json' https://api.github.com/orgs/pointivo/actions/runners/registration-token | jq -r .token)
  echo "Github Registration Token: $ACTIONS_RUNNER_INPUT_TOKEN"
  ./config.sh --unattended --url https://github.com/Pointivo --token "$ACTIONS_RUNNER_INPUT_TOKEN" --name "$MACHINE_NAME-runner-$DATE-$RUNNER_NAME-$HASH" --labels "$RUNNER_LABELS"
  sudo ./svc.sh install

  cd .. && chown -R $USER:$USER $FOLDER

  # Add cleanup to cron
  cd /tmp
  touch mycrontab
  crontab -l > mycrontab || true
  MINUTE=$(printf '%02d\n' $((1 + RANDOM % 10)))
  echo "${MINUTE} 05 * * * rm -rf /home/$USER/actions-runner-${RUNNER_NAME}/_work/_temp/* || echo 'true' " >> mycrontab
  crontab mycrontab
  rm mycrontab
}

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