On 2013/08/11 15:45, Patrick Hemmer wrote:
> I'm using the %rt field in the "unique-id-format" config parameter
> (the full value is "%{+X}o%pid-%rt"), and am getting lots of
> duplicates. In one specific case, haproxy added the same
> http_request_counter value to 70 different http requests within a span
> of 61 seconds (from various client hosts too). Does the
> http_request_counter only increment under certain conditions, or is
> this a bug?
>
> This is with haproxy 1.5-dev19
>
> -Patrick
This appears to be part of a bug. I just experienced a scenario where
haproxy stopped responding. When I went into the log I found binary
garbage in place of the request ID. I have haproxy configured to route
certain URLs, and to respond with a `errorfile` when a request comes in
that doesn't match any of the configure paths. It seems whenever I
request an invalid URL and get the `errorfile` response, the request ID
gets screwed up and becomes jumbled binary data.
For example: haproxy[28645]: 207.178.167.185:49560 api bad_url/<NOSRV>
71/-1/-1/-1/71 3/3/0/0/3 0/0 127/242 403 PR-- Á + GET / HTTP/1.1
Notice the "Á", that's supposed to be the process ID and request ID
separated by a hyphen. When I pipe it into xxd, I get this:
0000000: 6861 7072 6f78 795b 3238 3634 355d 3a20 haproxy[28645]:
0000010: 3230 372e 3137 382e 3136 372e 3138 353a 207.178.167.185:
0000020: 3439 3536 3020 6170 6920 6261 645f 7572 49560 api bad_ur
0000030: 6c2f 3c4e 4f53 5256 3e20 3731 2f2d 312f l/<NOSRV> 71/-1/
0000040: 2d31 2f2d 312f 3731 2033 2f33 2f30 2f30 -1/-1/71 3/3/0/0
0000050: 2f33 2030 2f30 2031 3237 2f32 3432 2034 /3 0/0 127/242 4
0000060: 3033 2050 522d 2d20 90c1 8220 2b20 4745 03 PR-- ... + GE
0000070: 5420 2f20 4854 5450 2f31 2e31 0a T / HTTP/1.1.
I won't post my entire config as it's over 300 lines, but here's the
juicy stuff:
global
log 127.0.0.1 local0
maxconn 20480
user haproxy
group haproxy
daemon
defaults
log global
mode http
option httplog
option dontlognull
retries 3
option redispatch
timeout connect 5000
timeout client 60000
timeout server 170000
option clitcpka
option srvtcpka
stats enable
stats uri /haproxy/stats
stats refresh 5
stats auth my:secret
listen stats
bind 0.0.0.0:90
mode http
stats enable
stats uri /
stats refresh 5
frontend api
bind *:80
bind *:81 accept-proxy
option httpclose
option forwardfor
http-request add-header X-Request-Timestamp %Ts.%ms
unique-id-format %{+X}o%pid-%rt
unique-id-header X-Request-Id
rspadd X-Api-Host:\ i-a22932d9
reqrep ^([^\ ]*)\ ([^\?\ ]*)(\?[^\ ]*)?\ HTTP.* \0\r\nX-API-URL:\ \2
acl is_1_1 path_dir /1/my/path
use_backend 1_1 if is_1_1
acl is_1_2 path_dir /1/my/other_path
use_backend 1_2 if is_1_2
...
default_backend bad_url
log-format %ci:%cp\ %ft\ %b/%s\ %Tq/%Tw/%Tc/%Tr/%Tt\
%ac/%fc/%bc/%sc/%rc\ %sq/%bq\ %U/%B\ %ST\ %tsc\ %ID\ +\ %r
backend bad_url
block if TRUE
errorfile 403 /etc/haproxy/bad_url.http
