Summary
We have several messages of "/api/v3/users/status" 404 being logged and I am not sure it's related to 404 messages showing up in the users' web interfaces.
Steps to reproduce
Not sure how to reproduce, it just started happening in a new v3.3.0 installation. Just followed the available production documentation for Ubuntu 14.04 with PG and NGINX/Let's Encrypt. Absolutely nothing out of the ordinary.
Expected behaviour
From the System Console, I see several messages like this:
[2016/08/15 13:50:53 UTC] [INFO] Stopping Server...
[2016/08/15 13:50:53 UTC] [INFO] Closing SqlStore
[2016/08/15 13:50:53 UTC] [INFO] Loaded system translations for 'en' from '/home/mattermost/mattermost-dev/i18n/en.json'
[2016/08/15 13:50:54 UTC] [INFO] Current version is 3.3.0 (3.3.0/Fri Aug 12 20:27:37 UTC 2016/20735470185e0b0ac1d15b975041ed9a2e0e43bc/none)
[2016/08/15 13:50:54 UTC] [INFO] Enterprise Enabled: false
[2016/08/15 13:50:54 UTC] [INFO] Current working directory is /home/mattermost/mattermost-dev
[2016/08/15 13:50:54 UTC] [INFO] Loaded config file from /home/mattermost/mattermost-dev/config/config.json
[2016/08/15 13:50:54 UTC] [INFO] Server is initializing...
[2016/08/15 13:50:54 UTC] [INFO] Pinging sql master database
[2016/08/15 13:50:54 UTC] [INFO] Pinging sql replica-0 database
[2016/08/15 13:50:54 UTC] [INFO] Starting Server...
[2016/08/15 13:50:54 UTC] [INFO] Server is listening on :8065
[2016/08/15 13:50:54 UTC] [INFO] RateLimiter is enabled
[2016/08/15 13:51:17 UTC] [EROR] /api/v3/users/status: code=404 ip=177.64.214.185
[2016/08/15 13:51:24 UTC] [EROR] websocket routing error: seq=0 uid=3cmaz6xznfddfdbqa4y6ebxp4w api.web_socket_router.bad_seq.app_error [details: ]
[2016/08/15 13:51:47 UTC] [EROR] /api/v3/users/status: code=404 ip=177.64.214.185
[2016/08/15 13:51:55 UTC] [EROR] /api/v3/users/profiles/: code=404 ip=186.203.7.150
[2016/08/15 13:52:17 UTC] [EROR] /api/v3/users/status: code=404 ip=177.64.214.185
[2016/08/15 13:52:26 UTC] [EROR] websocket routing error: seq=0 uid=3cmaz6xznfddfdbqa4y6ebxp4w api.web_socket_router.bad_seq.app_error [details: ]
[2016/08/15 13:52:47 UTC] [EROR] /api/v3/users/status: code=404 ip=177.64.214.185
[2016/08/15 13:53:17 UTC] [EROR] /api/v3/users/status: code=404 ip=177.64.214.185
[2016/08/15 13:53:27 UTC] [EROR] websocket routing error: seq=0 uid=3cmaz6xznfddfdbqa4y6ebxp4w api.web_socket_router.bad_seq.app_error [details: ]
[2016/08/15 13:53:47 UTC] [EROR] /api/v3/users/status: code=404 ip=177.64.214.185
[2016/08/15 13:54:17 UTC] [EROR] /api/v3/users/status: code=404 ip=177.64.214.185
[2016/08/15 13:54:29 UTC] [EROR] websocket routing error: seq=0 uid=3cmaz6xznfddfdbqa4y6ebxp4w api.web_socket_router.bad_seq.app_error [details: ]
[2016/08/15 13:54:47 UTC] [EROR] /api/v3/users/status: code=404 ip=177.64.214.185
[2016/08/15 13:55:17 UTC] [EROR] /api/v3/users/status: code=404 ip=177.64.214.185
[2016/08/15 13:55:30 UTC] [EROR] websocket routing error: seq=0 uid=3cmaz6xznfddfdbqa4y6ebxp4w api.web_socket_router.bad_seq.app_error [details: ]
[2016/08/15 13:55:47 UTC] [EROR] /api/v3/users/status: code=404 ip=177.64.214.185
[2016/08/15 13:56:07 UTC] [EROR] /api/v3/teams/channels/eybad1jzufbt7e3b3gfknxbgah/: code=404 ip=186.203.7.150
[2016/08/15 13:56:17 UTC] [EROR] /api/v3/users/status: code=404 ip=177.64.214.185
[2016/08/15 13:56:31 UTC] [EROR] websocket routing error: seq=0 uid=3cmaz6xznfddfdbqa4y6ebxp4w api.web_socket_router.bad_seq.app_error [details: ]
[2016/08/15 13:56:47 UTC] [EROR] /api/v3/users/status: code=404 ip=177.64.214.185
[2016/08/15 13:57:17 UTC] [EROR] /api/v3/users/status: code=404 ip=177.64.214.185
[2016/08/15 13:57:33 UTC] [EROR] websocket routing error: seq=0 uid=3cmaz6xznfddfdbqa4y6ebxp4w api.web_socket_router.bad_seq.app_error [details: ]Observed behaviour
I would ignore this but sometimes the users receive a message bar saying that something went wrong and that a 404 occurred. But it is not 1 to 1 to the logs in the server, so I am not sure it's correlated.