This commit adds an authentication mechanism to inter peer connection
(rafthttp). If the cert based peer auth is enabled and a new option
`--peer-cert-allowed-cn` is passed, an etcd process denies a peer
connection whose CN doesn't match.
The golang/time package tracks monotonic time in each time.Time
returned by time.Now function for Go 1.9.
Use time.Time to measure whether a lease is expired and remove
previous pkg/monotime. Use zero time.Time to mean forever. No
expiration when expiry.IsZero() is true.
* flag: improve StringFlags by support set default value when init
when init flagSet, set default value should be moved to StringFlags init
func, which is more friendly
personal proposal
* flag: code improved for StringFlags
Leak detector is catching goroutines trying to close files which appear
runtime related:
1 instances of:
syscall.Syscall(...)
/usr/local/golang/1.8.3/go/src/syscall/asm_linux_386.s:20 +0x5
syscall.Close(...)
/usr/local/golang/1.8.3/go/src/syscall/zsyscall_linux_386.go:296 +0x3d
os.(*file).close(...)
/usr/local/golang/1.8.3/go/src/os/file_unix.go:140 +0x62
It's unlikely a user goroutine will leak on file close; whitelist it.
Calling a WaitGroup.Done() in a defer will sometimes trigger the leak
detector since the WaitGroup.Wait() will unblock before the defer
block completes. If the leak detector runs before the Done() is
rescheduled, it will spuriously report the finishing Done() as a leak.
This happens enough in CI to be irritating; whitelist it and ignore.
The IP SAN check would always do a DNS SAN check if DNS is given
and the connection's IP is verified. Instead, don't check DNS
entries if there's a matching iP.
Fixes#8206
The go runtime won't always reinstall the default signal handler on the
SIGTERM path, so it's possible the signal won't terminate the process.
Instead, force SIG_DFL for the signal.
Computing the snapshot file path is error prone; snapshot recovery was
constructing file paths missing a path separator so the snapshot
would never be loaded. Instead, refactor the backend path handling
to use helper functions where possible.
Trying to decouple the v2 client from SRV code. Can't move
into discovery/ since that creates a circular dependency. So,
give up and move all the SRV code into a new package.
This changes the baseConfig used when creating tls Configs to utilize
the GetCertificate and GetClientCertificate functions to always reload
the certificates from disk whenever they are needed.
Always reloading the certificates allows changing the certificates via
an external process without interrupting etcd.
Fixes#7576
Cherry-picked by Gyu-Ho Lee <gyuhox@gmail.com>
Original commit can be found at https://github.com/coreos/etcd/pull/7784
