rc.local

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

pendingTime=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | jq -r '.pendingTime');
existingPendingTime=$(cat /etc/pendingTime 2>/dev/null || echo -n '');

echo "pendingTime=$pendingTime"
echo "existingPendingTime=$existingPendingTime"

if [ "$pendingTime" != "$existingPendingTime" ]; then
  echo -n "$pendingTime" > /etc/pendingTime;

  # Force make an ext4 filesystem, but only one force option (will fail if it's mounted).
  mke2fs -F -q -t ext4 /dev/nvme0n1;

  # Reset the fstab to correctly specify the mount drive, then mount it.
  echo "LABEL=cloudimg-rootfs   /        ext4   defaults,discard        0 0" > /etc/fstab;
  echo "/dev/nvme0n1    /var/lib/jenkins    ext4   auto,relatime,nofail   0 0" >> /etc/fstab;
  mount /dev/nvme0n1;

  # Remove the default lost+found.
  rm -rf /var/lib/jenkins/lost+found 2>/dev/null || echo "Nothing to remove";

  # Set the permissions for the new mount.
  chown jenkins:jenkins /var/lib/jenkins;
fi

exit 0