diff --git a/shared/db/postgres.nix b/shared/db/postgres.nix
index 7722839..87dd8fc 100644
--- a/shared/db/postgres.nix
+++ b/shared/db/postgres.nix
@@ -1,3 +1,11 @@
+## Note: This file wont setup the replication by itself
+## Once deploy follow those instruction to run the streaming replication
+## Execute on each slave (replace major version an ip addr accordingly):
+# 1. sudo systemctl stop postgresql.service
+# 2. sudo rm -r /var/lib/postgresql/17
+# 3. pg_basebackup -h 172.19.1.2 -U replication -p 5432 -D /var/lib/postgresql/17 -P -Xs
+# 4. sudo systemctl restart postgresql.service
+
 { config, pkgs, lib, ... }:
 
 let
@@ -45,7 +53,7 @@ in
         ++ lib.optionals (builtins.elem myName mapping.db.slaves) [
             "host  replication replication ${masterIP}/32 md5"
         ]));
-        ensureUsers = [{
+        ensureUsers = lib.mkIf (myName == mapping.db.master) [{
             name = "replication";
             ensureClauses.replication = true;
         }];
@@ -58,12 +66,13 @@ in
             log_disconnections = true;
         } // lib.optionalAttrs (myName == mapping.db.master) {
             wal_level = "logical";
-            wal_sender_timeout = 10;
+            wal_sender_timeout = "60s";
             max_wal_senders = 16;
             wal_keep_size = 1000; # In MB
         } // lib.optionalAttrs (builtins.elem myName mapping.db.slaves) {
             wal_level = "logical";
-            wal_receiver_timeout = 10;
+            wal_receiver_timeout = "60s";
+            max_wal_senders = 16;
             primary_conninfo = "host=${masterIP} port=5432 user=replication";
             hot_standby = "on";
         };