HAProxy Backend Layer7无效响应

Question

我正在尝试使用HAProxyv1.8负载平衡两个服务器，但在我的情况下，后端是域名而不是IP地址。

我的HAProxy配置如下:

global
log         /dev/log    local0
log         /dev/log    local1 notice
chroot      /var/lib/haproxy
pidfile     /var/run/rh-haproxy18-haproxy.pid
user        haproxy
group       haproxy
daemon
stats       socket /run/haproxy/admin.sock mode 660 level admin expose-fd listeners
spread-checks  21
# Default SSL material locations
ca-base     /etc/ssl/certs
crt-base    /etc/ssl/private
# Default ciphers to use on SSL-enabled listening sockets.
# For more information, see ciphers(1SSL). This list is from:
#  https://hynek.me/articles/hardening-your-web-servers-ssl-ciphers/
# An alternative list with additional directives can be obtained from
#  https://mozilla.github.io/server-side-tls/ssl-config-generator/?server=haproxy
ssl-default-bind-ciphers ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:RSA+AESGCM:RSA+AES:!aNULL:!MD5:!DSS
ssl-default-bind-options no-sslv3
defaults
mode                    http
log                     global
option                  httplog
option                  dontlognull
option                  http-server-close
option                  redispatch
retries                 3
timeout http-request    10s
timeout queue           1m
timeout connect         10s
timeout client          1m
timeout server          1m
timeout http-keep-alive 10s
timeout check           10s
maxconn                 10000
balance                 roundrobin

frontend https-443
bind *:443
mode http
option httplog
acl ACL_global.domain.com hdr(host) -i global.domain.com
use_backend www-443-app if ACL_global.domain.com
backend www-443-app
balance roundrobin
mode http
option httpchk GET /health
option forwardfor
http-check expect status 200
server backendnode1 app1.domain.com:443 check
server backendnode2 app2.domain.com:443 check
frontend health-443
bind *:8443
acl backend_dead nbsrv(www-443-app) lt 1
monitor-uri /haproxy_status
monitor fail if backend_dead
listen stats # Define a listen section called "stats"
bind :9000 # Listen on localhost:9000
mode http
stats enable  # Enable stats page
stats hide-version  # Hide HAProxy version
stats realm Haproxy Statistics  # Title text for popup window
stats uri /haproxy_stats  # Stats URI
stats auth haproxy:passwd  # Authentication credentials

但是，运行状况检查不通过。当我检查状态页面时，它显示:Layer7 invalid response。

我检查了我是否可以从我的HAProxy服务器连接到后端域，我成功地做到了。

curl -X GET -I https://app1.domain.com/health
HTTP/2 200 
cache-control: no-cache, private, max-age=0
content-type: application/json
expires: Thu, 01 Jan 1970 00:00:00 UTC
pragma: no-cache
x-accel-expires: 0
x-content-type-options: nosniff
x-xss-protection: 1; mode=block
date: Wed, 28 Jul 2021 12:05:09 GMT
content-length: 18
x-envoy-upstream-service-time: 0
endpoint: health
version: 1.0.0
server: istio-envoy

在我的配置中是否缺少一些东西，或者我需要更改一些东西才能使此工作?

Answer 1

您缺少ssl关键字server行。您可能还想设置sni

backend foo
default-server ssl check verify none
server backendnode1 app1.domain.com:443 sni str('app1.domain.com')
server backendnode2 app2.domain.com:443 sni str('app2.domain.com')

您还应该决定是否要验证后端服务器的SSL证书。你能相信这种联系吗?是因为你的人际关系吗?Haproxy鼓励您进行验证，但需要提供CA证书供他们验证。如果您验证证书，您还可以添加verifyhost和check-sni设置:

backend foo
default-server ssl check verify required 
server backendnode1 app1.domain.com:443 sni str('app1.domain.com') check-sni 'app1.domain.com' verifyhost 'app1.domain.com' ca-file /path/to/CA1.pem
server backendnode2 app2.domain.com:443 sni str('app2.domain.com') check-sni 'app2.domain.com' verifyhost 'app2.domain.com' ca-file /path/to/CA2.pem