haproxy Unify the fallback_local frontend name accross http and https

Author: olethanh

packaging/aleph-vm/etc/haproxy/haproxy-aleph.cfg

@@ -108,7 +108,7 @@ backend bk_http
     # For HTTP - Use Host header
     use-server %[var(txn.host),lower,map(/etc/haproxy/http_domains.map)] if { var(txn.host) -m found }
     http-request set-header Host %[req.hdr(host)]
-    server web1 127.0.0.1:4020
+    server fallback_local 127.0.0.1:4020
 
 # Default to fallback to the aleph-vm supervisor
 # Backend to terminate TLS for fallback (uses internal http frontend)

src/aleph/vm/haproxy.py

@@ -272,6 +272,7 @@ def update_haproxy_backends(socket_path, backend_name, map_file_path, weight=1):
     servers_to_remove = set(current_servers) - processed_servers
     # Do not remove the fallback server
     servers_to_remove.discard("fallback_local")
+    servers_to_remove.discard("web1")
     if servers_to_remove:
         logger.info(f"Removing {len(servers_to_remove)} servers no longer in map file")
         for server_name in servers_to_remove: