HAProxy admin page access via nginx

[Vonng]

Scenario

HAProxy provides a handy admin web UI. And we already have a nginx server on meta node.
So why don't we build an index page for all haproxy instance and make nginx proxy for them?

Proposal

• Add a new domain name h.pigsty for haproxy index pages
• Add new default entry in nginx_upstream

  - { name: haproxy,       host: h.pigsty, url: "127.0.0.1:9091" }

• Setup upstream and proxy in /etc/nginx/conf.d/haproxy.conf

# haproxy instance definition
upstream pg-meta-1 {
    server 10.10.10.10:9101 max_fails=0;
}
upstream pg-test-1 {
    server 10.10.10.11:9101 max_fails=0;
}
upstream pg-test-2 {
    server 10.10.10.12:9101 max_fails=0;
}
upstream pg-test-3 {
    server 10.10.10.13:9101 max_fails=0;
}


# nginx proxy for haproxy admin
server {
    listen       80;
    server_name  h.pigsty;

    location ^~/pg-meta-1/ {
        proxy_pass http://pg-meta-1;
        proxy_connect_timeout 2;
    }
    location ^~/pg-test-1/ {
        proxy_pass http://pg-test-1;
        proxy_connect_timeout 2;
    }
    location ^~/pg-test-2/ {
        proxy_pass http://pg-test-2;
        proxy_connect_timeout 2;
    }
    location ^~/pg-test-3/ {
        proxy_pass http://pg-test-3;
        proxy_connect_timeout 2;
    }

    location / {
        root        //www/;
        index       haproxy.html;
    }
}

• Add index page for all haproxy pages: haproxy.html
• Add auth for haproxy admin web UI: haproxy_admin_auth_enabled

[Vonng]

Resolved