MariaDB replication 구성을 하고 운영하던 중 binary log 파일이 계속 쌓여
파일 시스템이 차게 되었다.
binary log 를 지우는 방법과 위치를 변경하는 방법을 알아보자.
● bin log 삭제
mysql c;lient 에서 명령어로 지울수 있다.
mysql -u root -proot123
MariaDB [(none)]> show binary logs;
+--------------------+-----------+
| Log_name | File_size |
+--------------------+-----------+
| mariadb-bin.000001 | 353 |
| mariadb-bin.000002 | 330 |
+--------------------+-----------+
2 rows in set (0.00 sec)
MariaDB [(none)]> purge master logs to 'mariadb-bin.000002';
Query OK, 0 rows affected (0.01 sec)
MariaDB [(none)]> show binary logs;
+--------------------+-----------+
| Log_name | File_size |
+--------------------+-----------+
| mariadb-bin.000002 | 330 |
+--------------------+-----------+
1 row in set (0.00 sec)
mariadb-bin.000002 이전까지의 로그들을 삭제한다.
● MariaDB bin log 위치 변경
1. 설정 변경 ( my.cnf)
- service mysqld stop
- vi /etc/my.cnf 아래 내용 추가
---------------------------------------------
log_bin=/DATA/binlog/mariadb-bin ## /DATA/binlog 까지가 경로
## mariadb-bin 는 포맷
binlog_cache_size = 2M
max_binlog_size = 50M
expire_logs_days = 10
---------------------------------------------
2. 폴더 생성
cd /DATA
mkdir binlog
touch mariadb-bin.index
3. DB 재기동
[mysql@oracdb binlog]$ service mysqld start
Starting mysqld (via systemctl): ==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ===
Authentication is required to manage system services or units.
Authenticating as: root
Password:
==== AUTHENTICATION COMPLETE ===
[ OK ]
[mysql@oracdb binlog]$ cd /DATA/binlog
[mysql@oracdb binlog]$ ls -l
total 8
-rw-rw----. 1 mysql mysql 330 Dec 26 15:49 mariadb-bin.000001
-rw-rw-r--. 1 mysql mysql 34 Dec 26 15:49 mariadb-bin.index
4. Replication 재설정
@master
[mysql@oracdb binlog]$ ifconfig
ens160: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.10.10.48 netmask 255.255.255.0 broadcast 10.10.10.255
inet6 fe80::250:56ff:fe01:147 prefixlen 64 scopeid 0x20<link>
ether 00:50:56:01:01:47 txqueuelen 1000 (Ethernet)
RX packets 18041 bytes 1460721 (1.3 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 13598 bytes 1529832 (1.4 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
MariaDB [(none)]> show master status;
+--------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+--------------------+----------+--------------+------------------+
| mariadb-bin.000002 | 330 | | |
+--------------------+----------+--------------+------------------+
@slave
stop slave;
CHANGE MASTER TO MASTER_HOST='10.10.10.48',
MASTER_USER = 'replicant',
MASTER_PASSWORD = 'replicant',
MASTER_PORT=3306,
MASTER_LOG_FILE = 'mariadb-bin.000002',
MASTER_LOG_POS = 330;
START SLAVE;
5. 서비스 확인
MariaDB [(none)]> use mysql
Database changed
MariaDB [mysql]> SELECT variable_value
-> FROM information_schema.global_status
-> WHERE variable_name='SLAVE_RUNNING';
+----------------+
| variable_value |
+----------------+
| ON |
+----------------+
1 row in set (0.01 sec)
MariaDB [mysql]>
끗. 공감구걸
