Add MySQL docs

MySQL.md

@@ -0,0 +1,53 @@
+# MySQK
+
+## Replication
+
+### Primary server
+
+Config-file
+<pre><code>[mysqld]
+server_id = 1
+log_bin = "/path/to/MySQL-bin.log"
+# disable_log_bin
+binlog_do_db = database-to-replicate
+</code></pre>
+
+SQL
+<pre><code>
+CREATE USER 'replication'@'%' IDENTIFIED WITH mysql_native_password BY 'password';
+GRANT REPLICATION SLAVE ON *.* TO 'replication'@'%';
+FLUSH PRIVILEGES;
+SHOW MASTER STATUS;
+</code></pre>
+
+### Slave server
+
+Config-file
+<pre><code>[mysqld]
+server_id = 2
+log_bin = "/path/to/MySQL-bin.log"
+# disable_log_bin
+binlog_do_db = database-to-replicate
+relay-log = "/path/to/relay.log"
+</code></pre>
+
+SQL
+<pre><code>
+-- For MySQL > 8.0
+CHANGE REPLICATION SOURCE TO SOURCE_USER='replication', SOURCE_PASSWORD='password', SOURCE_HOST='192.168.0.2', SOURCE_LOG_FILE='MySQL-bin.000001', SOURCE_LOG_POS=155;
+
+-- For MySQL <= 8.0
+CHANGE MASTER TO
+  MASTER_HOST='192.168.0.2',
+  MASTER_USER='replication',
+  MASTER_PASSWORD='password',
+  MASTER_PORT=3306,
+  MASTER_LOG_FILE='MySQL-bin.000001',
+  MASTER_LOG_POS=466,
+  MASTER_CONNECT_RETRY=10;
+  
+START REPLICA;
+STOP REPLICA;
+
+SHOW REPLICA STATUS;
+</code></pre>