Since CoreOS update to 1248.2.0 (beta channel) , the /etc/lsb-release file as changed the variable DISTRIB_ID.
There some spaces characters in it now and no quotation marks around string.
So we can't source it to use variables.
It causes issues with some infrastructure monitoring scripts that I can't change easily, for example XenServer agent tools.
before 1248.2.0=> DISTRIB_ID=CoreOS
after => DISTRIB_ID=Container Linux by CoreOS
~ $ cat /etc/os-release
NAME="Container Linux by CoreOS"
PRETTY_NAME="Container Linux by CoreOS 1248.2.0 (Ladybug)"
Virtual machine in XenServer 7
$ source /etc/lsb-release
-bash: Linux: command not found