livrare lot 2

backend/services/data-layer/didiDatabase/ha-cluster/haproxy/haproxy.cfg

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+# HAProxy for DIDI PostgreSQL HA — routes by Patroni REST health checks.
+# Mirrors the production LB config (10.11.50.166/169 → VIP 167).
+#
+#   :5000 → the ONE node whose Patroni answers 200 on /primary (leader, RW)
+#   :5001 → nodes answering 200 on /replica (round-robin, RO)
+#
+# On failover Patroni flips the health endpoints; HAProxy reroutes in
+# (inter × fall) ≈ 9s worst case without client config changes.
+
+global
+    maxconn 300
+    log stdout format raw local0
+
+defaults
+    log global
+    mode tcp
+    retries 2
+    timeout client 30m
+    timeout connect 4s
+    timeout server 30m
+    timeout check 5s
+
+listen stats
+    mode http
+    bind *:7000
+    stats enable
+    stats uri /
+
+listen postgres_write
+    bind *:5000
+    option httpchk GET /primary
+    http-check expect status 200
+    default-server inter 3s fall 3 rise 2 on-marked-down shutdown-sessions
+    server pg-node1 pg-node1:5432 check port 8008
+    server pg-node2 pg-node2:5432 check port 8008
+    server pg-node3 pg-node3:5432 check port 8008
+
+listen postgres_read
+    bind *:5001
+    balance roundrobin
+    option httpchk GET /replica
+    http-check expect status 200
+    default-server inter 3s fall 3 rise 2 on-marked-down shutdown-sessions
+    server pg-node1 pg-node1:5432 check port 8008
+    server pg-node2 pg-node2:5432 check port 8008
+    server pg-node3 pg-node3:5432 check port 8008