falcon-linux-install.sh - DPKG race condition

[JamesLochheadCRWD]

If you use falcon-linux-install.sh inside a userdata/cloudinit script that also installs other things using apt/dpkg, there is a race condition that will occasionally occur because other processes still have the dpkg lock. The end result of this is that the instance (occasionally) won't start unless you insert some polling for the dpkg lock prior to using this script.

A more elegant fix may be to to insert -o DPkg::Lock::Timeout=30 into the apt command on line 408:

falcon-scripts/bash/install/falcon-linux-install.sh

Line 408 in 5075ab3

DEBIAN_FRONTEND=noninteractive apt-get -qq install -y "$pkg" >/dev/null

This will mean that apt now waits up to 30 seconds for other processes to release the DPKG lock, rather than failing immediately.

[carlosmmatos]

@JamesLochheadCRWD Thanks for bringing this up! We'll look into it soon.