Thanks, solved ;) BR, Rafal.
2016-02-03 14:42 GMT+01:00 Richard Stanway <[email protected]>: > You want proxy_buffer_size. > > http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffer_size > > On Wed, Feb 3, 2016 at 2:24 PM, Rafał Radecki <[email protected]> > wrote: > >> Hi All. >> >> I am currently trying to find the source of "upstream sent too big header >> while reading response header from upstream" in my logfiles because nginx >> as a consequence returns "502 Bad Gateway". >> >> Basically I used tcpdump to get the traffic and I compared two cases: >> >> 1) the communication is ok: >> >> 12167 07:03:51.466937 IP 10.10.3.7.80 > 10.10.2.121.43817: Flags [P.], >> seq 1779345520:1779348777, ack 1001934214, win 219, options [nop,nop,TS val >> 2527240108 ecr 619023542], length 3257 >> 12168 E...7.@.@... >> 12169 >> 12170 .. >> 12171 >> 12172 .y.P.)j..p;.M............ >> 12173 ....$...HTTP/1.1 302 Found^M >> 12174 Content-Length: 58^M >> 12175 Content-Type: text/html; charset=utf-8^M >> 12176 Date: Wed, 03 Feb 2016 12:03:51 GMT^M >> 12177 Location: /^M >> 12178 Set-Cookie: rfid-mgt-console=... >> 12179 Set-Cookie: rfid-mgt-console.sig=xxx; path=/; expires=Wed, 03 Feb >> 2016 13:03:51 GMT; httponly^M >> 12180 Vary: Accept, Accept-Encoding^M >> 12181 X-Cf-Requestid: yyy^M >> 12182 X-Powered-By: Express^M >> 12183 ^M >> 12184 <p>Moved Temporarily. Redirecting to <a href="/">/</a></p> >> >> In this case everything up to "Moved T..." is in one response from >> upstream (10.10.3.7). >> >> 2) nginx throws mentioned error to error.log and returns 502 code >> 56874 06:31:45.307207 IP 10.10.3.7.80 > 10.10.2.121.58073: Flags [P.], >> seq 953075345:953079441, ack 3028520986, win 219, options [nop,nop,TS val >> 2526758567 ecr 617097381], length 4096 >> 56875 E..4..@.@... >> 56876 >> 56877 .. >> 56878 >> 56879 .y.P..8...........h...... >> 56880 ..F.$.(.HTTP/1.1 302 Found^M >> 56881 Content-Length: 58^M >> 56882 Content-Type: text/html; charset=utf-8^M >> 56883 Date: Wed, 03 Feb 2016 11:31:45 GMT^M >> 56884 Location: /^M >> 56885 Set-Cookie: rfid-mgt-console=... >> 56886 Set-Cookie: rfid-mgt-console.sig=xxx; path=/; expires=Wed, 03 Feb >> 2016 12:31:45 GMT; httponly^M >> 56887 Vary: Accept, Accept-Encoding^M >> 56888 X-Cf-Requestid: yyy >> >> 56889 06:31:45.307213 IP 10.10.2.121.58073 > 10.10.3.7.80: Flags [.], ack >> 953079441, win 280, options [nop,nop,TS val 617097490 ecr 2526758567], >> length 0 >> 56890 E..4..@[email protected] >> 56891 >> 56892 .y >> 56893 >> 56894 .....P....8.............. >> 56895 $.)...F. >> >> 56896 06:31:45.307218 IP 10.10.3.7.80 > 10.10.2.121.58073: Flags [P.], >> seq 953079441:953079542, ack 3028520986, win 219, options [nop,nop,TS val >> 2526758567 ecr 617097381], length 101 >> 56897 E.....@.@... >> 56898 >> 56899 .. >> 56900 >> 56901 .y.P..8...........JU..... >> 56902 ..F.$.(.503-564da79aecb5^M >> 56903 X-Powered-By: Express^M >> 56904 ^M >> 56905 <p>Moved Temporarily. Redirecting to <a href="/">/</a></p> >> >> In this case response from upstream (10.10.3.7) is much larger because of >> larger "Set-Cookie: rfid-mgt-console=..." returned and is divided into two >> parts. "upstream sent too big header while reading response header from >> upstream" is written to error.log. >> >> For clarity I only pasted the part of the traffic which differs. >> >> Initially in "http" section in nginx.conf: >> >> ... >> http { >> proxy_max_temp_file_size 0; >> >> proxy_buffering off; >> ... >> >> I tried to change it to: >> >> ... >> http { >> proxy_max_temp_file_size 0; >> >> proxy_buffering on; >> >> proxy_buffers 8 256k; >> ... >> >> And I also added: >> >> ... >> proxy_buffering on; >> >> proxy_buffers 8 256k; >> ... >> >> to my "server" sections. I performed a restart but the error did not >> change. >> >> Can someone help me with this one? >> >> BR, >> Rafal. >> >> _______________________________________________ >> nginx mailing list >> [email protected] >> http://mailman.nginx.org/mailman/listinfo/nginx >> > > > _______________________________________________ > nginx mailing list > [email protected] > http://mailman.nginx.org/mailman/listinfo/nginx >
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