Gyu-Ho Lee 56e3ab0943 etcd-agent: tidy cleanup before SIGKILL
https://github.com/golang/go/blob/master/src/os/exec_posix.go#L18 shows that
cmd.Process.Kill calls syscall.SIGKILL to the command. But
http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_12_01.html explains
'If you send a SIGKILL to a process, you remove any chance for the process to
do a tidy cleanup and shutdown, which might have unfortunate consequences.'
This sends SIGTERM, SIGINT syscalls to the PID so that the process could
have more time to clean up the resources.

Related to https://github.com/coreos/etcd/issues/4517.
2016-02-16 13:08:22 -08:00
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