websocket connection seems to cause nginx to not reload
me at nanaya.pro
Tue Apr 16 03:14:42 UTC 2019
On Tue, Apr 16, 2019, at 07:14, Andrea Y Ma wrote:
> Seeing nginx not picking up changes to its configuration. Running
> `nginx -t` does not reveal any errors and no errors generated when
> running `nginx -s reload`. However nginx access logs show that the old
> IPs from the previous configuration are still being served. Upon closer
> inspection seeing that nginx defunct process are occurring each time a
> `nginx -s reload` is run.
> Also seeing that it seems related to a websocket application as when
> that websocket application is stopped, then the nginx -s reload
> completes successfully.
> Andrea Ma
As websocket connections are persistent, the old processes will stay up until the last connection disconnects. It also applies to normal http (for example when someone is downloading/uploading large file) but it's way more visible with websocket.
(or at least that's how I understand it)
More information about the nginx