mysql5.1.73 主從複製的設定套路
2、修改主伺服器master:
#vi /etc/my.cnf
[client]
#password = your_password
port = 3306
socket = /tmp/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
port = 3306
socket = /tmp/mysql.sock
skip-locking
key_buffer_size = 384M
max_allowed_packet = 128M
table_open_cache = 512
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size = 32M
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 8
server-id = 1
[mysqldump]
quick
max_allowed_packet = 128M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[myisamchk]
key_buffer_size = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
3、修改從伺服器slave:
#vi /etc/my.cnf
[client]
#password = your_password
port = 3306
socket = /tmp/mysql.sock
# Here follows entries for some specific programs
# The MySQL server
[mysqld]
port = 3306
socket = /tmp/mysql.sock
skip-locking
key_buffer_size = 384M
max_allowed_packet = 128M
table_open_cache = 512
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size = 32M
# Try number of CPU's*2 for thread_concurrency
thread_concurrency = 8
log-bin=mysql-bin
server-id = 2
[mysqldump]
quick
max_allowed_packet = 128M
[mysql]
no-auto-rehash
[myisamchk]
key_buffer_size = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
改完之後,兩臺雞雞都要重啟一下mysql
service mysqld restart
登入一下主機的MYSQL
mysql -u root -p
GRANT REPLICATION SLAVE ON *.* TO 'root' @'%' IDENTIFIED BY '密碼';
SHOW MASTER STATUS;
檢視一下position 的值
然後再另一個從伺服器上配置
CHANGE MASTER TO MASTER_HOST='172.16.108.71',MASTER_USER='root',MASTER_PASSWORD='',MASTER_LOG_FILE='mysql-bin.000005',MASTER_LOG_POS=position的ID;
然後啟動
START SLAVE;
檢視狀態,主要看看有沒有什麼錯誤
SHOW DATABASES;
SHOW SLAVE STATUS;
SHOW VARIABLES LIKE 'server_id'; --這個是檢查ID是否重複
下面是測試工作:
主伺服器Mysql，建立資料庫，並在這個庫中建表插入一條資料：
mysql> create database t_test;
Query OK, 1 row affected (0.00 sec)
mysql> use t_test;
Database changed
mysql>create table t_test(id int(3),name varchar(20));
Query OK, 0 rows affected (0.00 sec)
mysql> insert into t_test values(23,'zhangs');
Query OK, 1 row affected (0.00 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| t_test |
| mysql |
| test |
+--------------------+
4 rows in set (0.00 sec)
在從伺服器Mysql查詢：
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| t_test |
| mysql |
| test |
+--------------------+
4 rows in set (0.00 sec)
mysql> use t_test
Database changed
mysql> select * from t_test; //在從伺服器上檢視主伺服器上新增的具體資料
+------+-------+
| id | name |
+------+-------+
| 23|zhangs|
+------+------+
1 row in set (0.00 sec)
關閉slave伺服器： stop slave/start slave
再停止mysql 服務，service mysqld stop
編寫一shell指令碼，用nagios監控slave的兩個yes（Slave_IO及Slave_SQL程序），如發現只有一個或零個yes，就表明主從有問題了，發簡訊警報