Remove Web Application Proxy Server From Cluster Access

# On the node being removed systemctl stop keepalived systemctl disable keepalived Before physically decommissioning, block port 443 on the node to ensure zero stray traffic:

# Temporarily mark the server as down in the upstream block upstream backend_wan server 10.0.0.10:80; # Keep this server 10.0.0.11:80 down; # Mark removal node as down remove web application proxy server from cluster

- name: Clean ADFS trust (run on ADFS server) win_shell: | Remove-WebApplicationProxyEndpoint -TargetProxyFQDN " ansible_fqdn " delegate_to: adfs_internal_server Removing a web application proxy server from a cluster is not merely a matter of turning off a switch. It is a process of quiescing, disconnecting, cleaning, and validating . The difference between a professional team and an amateur one is visible in the post-removal state. # On the node being removed systemctl stop

WAP, particularly in Microsoft-centric environments (acting as a reverse proxy for Active Directory Federation Services - ADFS), is not a stateless load balancer. It holds specific configuration ties, certificate dependencies, and publishing rules. This guide provides a comprehensive, vendor-agnostic approach with specific emphasis on ADFS/WAP, NGINX, and HAProxy clusters. and HAProxy clusters.

# Uninstall the Web Application Proxy role Uninstall-WindowsFeature Web-Application-Proxy Wait for completion. This removes the configuration but does not clean the ADFS side.