There are five options 'debug' 'labels' 'cluster-store' 'cluster-store-opts' and 'cluster-advertise' that can be reconfigured, configure any of these options should not affect other options which may have configured in flags. But this is not true, for example, I start a daemon with -D to enable the debugging, and after a while, I want reconfigure the 'label', so I add a file '/etc/docker/daemon.json' with content '"labels":["test"]' and send SIGHUP to daemon to reconfigure the daemon, it work, but the debugging of the daemon is also diabled. I don't think this is a expeted behaviour. This patch also have some minor refactor of reconfiguration of cluster-advertiser. Enable user to reconfigure cluster-advertiser without cluster-store in config file since cluster-store could also be already set in flag, and we only want to reconfigure the cluster-advertiser. Signed-off-by: Lei Jitang <leijitang@huawei.com> Upstream-commit: b9366c9609166d41e987608041b5a2079726aa5f Component: engine
docker.go contains Docker's main function.
This file provides first line CLI argument parsing and environment variable setting.