From e3d751833fb31d31a8c1c594771274a37d202f69 Mon Sep 17 00:00:00 2001
From: Yik Teng Hie <tenghie.yik@razer.com>
Date: Wed, 26 May 2021 15:16:43 +0800
Subject: [PATCH] mysql docker persistent data

---
 docker/README.md | 33 +++++++++++++++++++++++++++++++-
 mysql/README.md  | 49 +++++++++++++++++++++++++++++++++++++++++++++++-
 ubuntu/README.md |  3 +++
 3 files changed, 83 insertions(+), 2 deletions(-)

diff --git a/docker/README.md b/docker/README.md
index 092a854..dd64e9f 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -51,7 +51,11 @@
   // restart image
   $ docker-compose restart
   
-  // 
+  // show container mem / io usage
+  $ docker stats
+  
+  // show running process in container
+  $ docker top <container>
   ```
 
   
@@ -194,3 +198,30 @@ $ echo "Container restarted."
 
 ```
 
+
+
+* persistent data setup
+
+```yml
+services:
+
+  db:
+    image: mysql
+    command: --default-authentication-plugin=mysql_native_password
+    restart: always
+    ports:
+      - "3306:3306"
+    environment:
+      MYSQL_ROOT_PASSWORD: root
+    volumes:
+        - ./persistent_data:/var/lib/mysql
+```
+
+
+
+```shell
+
+// stop container and remove volune
+$ docker-compose down -v
+```
+
diff --git a/mysql/README.md b/mysql/README.md
index 24de388..d5e3172 100644
--- a/mysql/README.md
+++ b/mysql/README.md
@@ -1,6 +1,37 @@
 # MySQL
 
+## Basic
 
+* persist data : `/var/lib/mysql`
+
+* `docker run -p -d 3306:3306 -v ./mysql-data:/var/lib/mysql mysql:latest`
+
+* ```yml
+  version: "3.8"
+  services:
+    mysql:
+      image: mysql:5.7.31
+      volumes:
+        - data-volume:/var/lib/mysql
+  volumes:
+    data-volume:
+  ```
+
+* ```shell
+  // stop service
+  sudo /etc/init.d/mysql stop
+  
+  // copy to new location
+  sudo cp -R -p /var/lib/mysql /newpath
+  
+  // update folder location
+  sudo gedit /etc/mysql/my.cnf
+  
+  // start service
+  sudo /etc/init.d/mysql restart
+  ```
+
+* 
 
 ## SSH Tunneling
 
@@ -10,7 +41,7 @@
 $ ssh -L [local port]:[database host]:[remote port] [username]@[remote host]
 
 // example
-$ ssh -L 3307:rr-zf81fzm6ija52q623.mysql.kualalumpur.rds.aliyuncs.com:3306 tenghieyik@172.22.4.252
+$ ssh -L 3306:rr-zf81fzm6ija52q623.mysql.kualalumpur.rds.aliyuncs.com:3306 tenghieyik@172.22.4.252
 ```
 
 * dump
@@ -27,3 +58,19 @@ $ mysql --init-command="SET SESSION FOREIGN_KEY_CHECKS=0;SET UNIQUE_CHECKS=0;" -
 
 ```
 
+## Other
+
+
+
+```sql
+mysql> CREATE USER 'razerpay'@'%' IDENTIFIED BY 'razerpay-singapore';
+mysql> GRANT All PRIVILEGES ON *.* TO 'razerpay'@'%';
+mysql> FLUSH PRIVILEGES;
+
+mysql> SHOW GRANTS FOR 'razerpay'@'%';
+mysql> REVOKE ALL PRIVILEGES ON *.* FROM 'razerpay'@'%';
+mysql> DROP USER 'razerpay'@'%';
+
+// apply this for mysql-8 if encountered PublicKeyRetrieval error
+mysql> ALTER USER 'razerpay'@'%' IDENTIFIED WITH mysql_native_password BY 'razerpay-singapore';
+```
diff --git a/ubuntu/README.md b/ubuntu/README.md
index 8ad1ace..b8bba36 100644
--- a/ubuntu/README.md
+++ b/ubuntu/README.md
@@ -11,6 +11,9 @@ root    ALL=(ALL:ALL) ALL
 newuser ALL=(ALL:ALL)ALL
 
 hold `ctrl` and press `x` to save and exit
+
+// list all running process
+$ ps aux
 ```