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HAProxy-健康检查子目录/服务

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HAProxy-健康检查子目录/服务

我有一台服务器，它托管多个站点，但从逻辑上看，它们看起来像是子目录。例如：

 - http://XXX/Site1
 - http://XXX/Site2

如何配置 HAProxy 的健康检查来检查每个“子站点”？

答案1

使用多个后端，每个后端检查 1 个站点。使用 ACL 执行内容切换，即根据 HTTP 请求的某些属性（在本例中为 URL 路径）选择将请求路由到的后端。

例子：

global
    log 127.0.0.1   local0
    log 127.0.0.1   local1 notice
    maxconn 4096
    user haproxy
    group haproxy
    daemon

defaults
    log global
    mode http
    option httplog
    option dontlognull
    retries 3
    option redispatch
    maxconn 2000
    timeout connect 5000
    timeout client  50000
    timeout server  50000

frontend 1.2.3.4-80
    bind 1.2.3.4:80
    mode http
    option http-server-close
    option logasap

    acl url_site1 url_beg /Site1
    acl url_site2 url_beg /Site2

    use_backend site1 if url_site1
    use_backend site2 if url_site2


backend site1
    mode http
    balance roundrobin
    option httpchk HEAD /Site1 HTTP/1.1\r\nHost:\ XXX
    server srv1 1.1.1.1:80 check
    server srv2 2.2.2.2:80 check

backend site2
    mode http
    balance roundrobin
    option httpchk HEAD /Site2 HTTP/1.1\r\nHost:\ XXX
    server srv1 1.1.1.1:80 check
    server srv2 2.2.2.2:80 check

答案2

您可以在 Haproxy 中启用 HTTP 检查来检查 HTTP 服务器

  https://code.google.com/p/haproxy-docs/wiki/httpchk

    backend cluster1
    mode http
        balance roundrobin
    option  httplog
    option httpclose        #Disable keepalive
    option  forwardfor
    option httpchk HEAD /check.txt HTTP/1.0

    backend cluster2
    mode http
        balance roundrobin
    option  httplog
    option httpclose        #Disable keepalive
    option  forwardfor
    option httpchk HEAD /check.txt HTTP/1.0
        # Servers

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