HAProxy put maintenance mode even backend process return http 200 status
I can put my website on maintenance mode by using 'errorfile' haproxy option. errorfile 503 /etc/haproxy/errorfiles/maintenance503.http . In above case when haproxy receive 503 response code from backend haproxy show 503maintance.html page.
But what I want is even after haproxy receive 200 ok status from backend it should show customize page. I want to keep running backend process but block the access for users via load balancer. I have tried with errorfile 200 /etc/haproxy/errorfiles/maintenance200.http but it is not working.
I can redirect request using redir but I have to host maintenance.html on different server. Does anyone have idea how to achieve this with "errorfile"?
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