我想把很少的服务放在反向代理之后,简单的服务工作。
当试图到达grafana简单的json数据源(POST + json有效负载)时,会出现502问题。
Grafana本身并不支持反向代理。
当前的haproxy配置:
frontend FRONT.AWS.WEB.PROXY
mode http
bind *:8080
timeout client 1m
option httplog
acl IS_RELE path_beg /release
acl IS_GRAF path_beg /grafana
use_backend BACK.AWS.WEB.ARTIFACTS if IS_RELE
use_backend BACK.AWS.WEB.RTGRAF if IS_GRAF
backend BACK.AWS.WEB.ARTIFACTS
mode http
http-request set-path /
http-response replace-value X-Application-Context (.*)(\release).*$ \1
server AWS.WEB.ARTIFACTS *:5581/ maxconn 1000 check port 5581
backend BACK.AWS.WEB.RTGRAF
mode http
#option forwardfor
#balance source
#option httpclose
#option httpchk HEAD / HTTP/1.0
http-request set-path /
http-response replace-value X-Application-Context (.*)(\grafana).*$ \1
server AWS.WEB.RTGRAF *:5582/ maxconn 1000 check port 5582 grafana中的数据源配置:
http://192.168.56.101:8080/grafana/
这是没有haproxy的工作请求:
curl -d '{"requestId":"Q119","timezone":"utc".....lters":[]}' -H 'Content-Type: application/json' http://localhost:8080/query答得好:
[{"columns":[{"text":"sym","type":"string"}, {"text":"time","type":""}, .... .... {"text":"mode","type":"string"}, {"text":"proto","type":"string"}],"rows":[],"type":"table"}]但与haproxy:
curl -d .... http://localhost:8080/grafana/query502答复:
<h1>502 Bad Gateway</h1>
The server returned an invalid or incomplete response. 但要确认的是,服务本身是有效的:
curl http://localhost:8080/grafana/?2+1响应:
<html><head><style>a{text-decoration:none}a:link{color:024C7E}a:visited{color:024C7E}a:active{color:958600}body{font:10pt verdana;text-align:justify}</style></head><body><pre>3Haproxy日志:
127.0.0.1:42362 [16/Sep/2020:21:57:14.430] FRONT.AWS.WEB.PROXY BACK.AWS.WEB.RTGRAF/AWS.WEB.RTGRAF 0/0/0/3/3 200 274 - - ---- 1/1/0/0/0 0/0 "GET /grafana/?2+1 HTTP/1.1"
127.0.0.1:42418 [16/Sep/2020:21:57:32.038] FRONT.AWS.WEB.PROXY BACK.AWS.WEB.RTGRAF/AWS.WEB.RTGRAF 0/0/0/-1/0 502 214 - - PH-- 1/1/0/0/0 0/0 "POST /grafana/query HTTP/1.1"地堑日志:
INFO[09-16|22:23:02] Request Completed logger=context userId=1 orgId=1 uname=admin method=POST path=/api/datasources/proxy/2/query status=502 remote_addr=192.168.56.1 time_ms=6 size=107 referer="http://192.168.56.101:3000/d/aQPWEJFmz/system-status?orgId=1&refresh=10s"发布于 2021-01-29 09:08:52
找到问题了,对未来的任何人来说,都是给你的!
....................................................caring古开发人员
使用简单的nc
HTTP GET请求错误路径
因此,这需要重写:
backend BACK.AWS.WEB.ARTIFACTS
mode http
http-request set-uri %[url,regsub(^/release/,/,)]
http-response replace-value X-Application-Context (.*)(\release).*$ \1
server AWS.WEB.ARTIFACTS *:5581/ maxconn 1000 check port 5581
backend BACK.AWS.WEB.RTGRAF
mode http
http-response replace-value X-Application-Context (.*)(\grafana).*$ \1
server AWS.WEB.RTGRAF *:5582/ maxconn 1000 check port 5582 https://stackoverflow.com/questions/63966423
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