Today I started having a network problem. However, I've already seen this problem in the past, when somebody has a really nasty connection. In my case, today a network node is losing tons of packets.
When this happens, Traefik will, at some point, break the connection. For example, downloading a file with curl, curl failed with:
➤ curl https://www.example.com/web/content/252029-1b9dc64/web.assets_backend.js > /dev/null
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
40 1834k 40 748k 0 0 14742 0 0:02:07 0:00:51 0:01:16 22117
curl: (18) transfer closed with 1112977 bytes remaining to read
At the same time, traefik logged this (important line last):
INFO[2019-10-01T10:55:25Z] Traefik version v1.7.18 built on 2019-09-26_01:56:30PM
INFO[2019-10-01T10:55:25Z]
Stats collection is disabled.
Help us improve Traefik by turning this feature on :)
More details on: https://docs.traefik.io/v1.7/basics/#collected-data
INFO[2019-10-01T10:55:25Z] Preparing server http &{Address::80 TLS:<nil> Redirect:0xc000916e00 Auth:<nil> WhitelistSourceRange:[] WhiteList:<nil> Compress:true ProxyProtocol:<nil> ForwardedHeaders:0xc00089bbc0} with readTimeout=0s writeTimeout=0s idleTimeout=3m0s
INFO[2019-10-01T10:55:25Z] Preparing server https &{Address::443 TLS:0xc0003ffef0 Redirect:<nil> Auth:<nil> WhitelistSourceRange:[] WhiteList:<nil> Compress:true ProxyProtocol:<nil> ForwardedHeaders:0xc00089bc80} with readTimeout=0s writeTimeout=0s idleTimeout=3m0s
INFO[2019-10-01T10:55:25Z] Starting server on :80
INFO[2019-10-01T10:55:25Z] Starting provider configuration.ProviderAggregator {}
INFO[2019-10-01T10:55:25Z] Starting server on :443
INFO[2019-10-01T10:55:25Z] Starting provider *docker.Provider {"Watch":true,"Filename":"","Constraints":null,"Trace":false,"TemplateVersion":2,"DebugLogGeneratedTemplate":false,"Endpoint":"http://dockersocket:2375","Domain":"","TLS":null,"ExposedByDefault":false,"UseBindPortIP":false,"SwarmMode":false,"Network":"","SwarmModeRefreshSeconds":15}
INFO[2019-10-01T10:55:25Z] Starting provider *acme.Provider {"Email":"example@example.com","ACMELogging":true,"CAServer":"https://acme-v02.api.letsencrypt.org/directory","Storage":"/etc/traefik/acme/acme.json","EntryPoint":"https","KeyType":"","OnHostRule":true,"OnDemand":false,"DNSChallenge":null,"HTTPChallenge":{"EntryPoint":"http"},"TLSChallenge":null,"Domains":null,"Store":{}}
INFO[2019-10-01T10:55:25Z] Testing certificate renew...
INFO[2019-10-01T10:55:25Z] Server configuration reloaded on :443
INFO[2019-10-01T10:55:25Z] Server configuration reloaded on :80
INFO[2019-10-01T10:55:26Z] Server configuration reloaded on :80
INFO[2019-10-01T10:55:26Z] Server configuration reloaded on :443
2019/10/01 10:57:30 reverseproxy.go:447: httputil: ReverseProxy read error during body copy: unexpected EOF
ERRO[2019-10-01T11:05:25Z] Provider connection error unexpected EOF, retrying in 450.062643ms
I found https://github.com/moby/moby/issues/30405 which could be related and indicate that this is only Docker problem, but... it's a big problem!
Has anybody faced this issue before? And any clues on fixing it? Thanks!
