From 35478d43d659885e368703c4efd32d8a024ff369 Mon Sep 17 00:00:00 2001
From: colben <colbenlee@gmail.com>
Date: Tue, 20 May 2025 20:17:30 +0800
Subject: [PATCH] update

---
 pgsql/Demo/StreamReplication/README.md | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/pgsql/Demo/StreamReplication/README.md b/pgsql/Demo/StreamReplication/README.md
index 6fb8812..c805b77 100644
--- a/pgsql/Demo/StreamReplication/README.md
+++ b/pgsql/Demo/StreamReplication/README.md
@@ -108,3 +108,16 @@
     # 在 pgsql1 里创建数据库、表或更改数据，在 pgsql2 里可以看到
     ```
 
+- 查看状态
+    ```
+    docker exec -u postgres pgsql1 pg_controldata -D /var/lib/pgsql | grep cluster
+    # 主库(pgsql1)输出: in production
+    docker exec -u postgres pgsql2 pg_controldata -D /var/lib/pgsql | grep cluster
+    # 从库(pgsql2)输出: in archive recovery
+    ```
+
+- 从库提升为主库
+    ```
+    docker exec -u postgres pgsql2 pg_ctl promote
+    ```
+