noexec를 사용한 /var/tmp 마운트 문제 해결
Salt SSH is using /var/tmp to deploy Salt Bundle to and execute Salt commands on the client with the bundled Python. Therefore you must not mount /var/tmp with the noexec option. It is not possible to bootstrap the clients, which have /var/tmp mounted with noexec option, with the Web UI because the bootstrap process is using Salt SSH to reach a client.