🆙 Add more tuts more to come 🆙

2025-09-21 13:18:46 +02:00
parent 54997b13ce
commit e29ca8c067
3 changed files with 344 additions and 0 deletions
@@ -0,0 +1,109 @@
+### Understanding the Basics
+
+With a 32 GB RAM server, your primary goal is to maximize the use of available memory to reduce disk I/O, which is the slowest part of database operations. The main setting to focus on is the size of the InnoDB buffer pool.
+
+Open your MySQL configuration file, which is typically `my.cnf`. Common locations include:
+
+  * `/etc/mysql/my.cnf`
+  * `/etc/my.cnf`
+  * `/etc/mysql/mysql.conf.d/mysqld.cnf`
+
+Always make a backup of the original file before making any changes.
+
+```bash
+sudo cp /etc/mysql/my.cnf /etc/mysql/my.cnf.bak
+sudo nano /etc/mysql/my.cnf
+```
+
+-----
+
+### Key Settings for 32 GB RAM
+
+Add or adjust the following lines under the `[mysqld]` section of the configuration file. These settings are optimized for a **dedicated database server**. If your server hosts other resource-intensive applications, you should slightly decrease these values.
+
+#### 1\. InnoDB Buffer Pool Size
+
+The **InnoDB buffer pool** is the most critical setting. It's the cache for your data and indexes. A larger buffer pool means MySQL can keep more of your active dataset in fast RAM, drastically improving performance.
+
+For a 32 GB server, allocating about 70-80% of the total RAM is ideal. This leaves enough memory for the operating system and other processes.
+
+```ini
+innodb_buffer_pool_size = 24G
+```
+
+#### 2\. Query Cache
+
+The query cache is known to cause performance issues on busy servers, and it has been removed in MySQL 8.0. **It's best to disable it** on modern systems.
+
+```ini
+query_cache_type = 0
+query_cache_size = 0
+```
+
+#### 3\. Thread Cache Size
+
+The **thread cache** stores threads for reuse, which avoids the overhead of creating new threads for each connection. A higher value is beneficial for a server with many concurrent connections.
+
+```ini
+thread_cache_size = 256
+```
+
+#### 4\. Max Connections
+
+Set `max_connections` to a value that reflects the expected number of concurrent users or application connections. A value of 500 is a good starting point for a busy server.
+
+```ini
+max_connections = 500
+```
+
+-----
+
+### Complete `my.cnf` Example
+
+Here is a summary of the recommended settings. Copy and paste these into your `my.cnf` file under the `[mysqld]` section.
+
+```ini
+[mysqld]
+# Basic settings
+user = mysql
+pid-file = /var/run/mysqld/mysqld.pid
+socket = /var/run/mysqld/mysqld.sock
+port = 3306
+
+# Memory & InnoDB settings
+innodb_buffer_pool_size = 24G
+innodb_log_file_size = 256M
+innodb_flush_log_at_trx_commit = 2
+innodb_file_per_table = 1
+innodb_flush_method = O_DIRECT
+
+# Concurrency & Performance
+max_connections = 500
+thread_cache_size = 256
+
+# Query Cache (recommended to disable)
+query_cache_type = 0
+query_cache_size = 0
+
+# MyISAM (if applicable)
+key_buffer_size = 128M
+
+# Logging
+log_error = /var/log/mysql/error.log
+```
+
+-----
+
+### Applying the Changes
+
+After saving your changes, you must restart the MySQL service to apply the new settings.
+
+```bash
+sudo systemctl restart mysql
+```
+
+You can then check the status of the service to ensure it started successfully.
+
+```bash
+sudo systemctl status mysql
+```