1. MySQL installieren
#tar -xf mysql-5.7.18-1.el6.x86_64.rpm-bundle.tar #yum localinstall *.rpm
1.1 MySQL-Konfiguration ändern
# For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html [mysqld] # # Remove leading # and set to the amount of RAM for the most important data # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. # innodb_buffer_pool_size = 128M # # Remove leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # log_bin # # Remove leading # to set options mainly useful for reporting servers. # The server defaults are faster for transactions and fast SELECTs. # Adjust sizes as needed, experiment to find the optimal values. # join_buffer_size = 128M # sort_buffer_size = 2M # read_rnd_buffer_size = 2M datadir=/data/mysql socket=/var/lib/mysql/mysql.sock # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid explicit_defaults_for_timestamp=true tmpdir=/tmp [client] default-character-set=utf8mb4 [mysqld] character_set_server=utf8mb4
1.2 Berechtigungsänderung
[root@172 ~]# chown -R mysql:mysql /data [root@172 ~]# chmod 777 -R /data/ [root@172 ~]# chmod -R 777 /tmp
1.3 MySQL-Dienst starten
[root@172 ~]# service mysqld restart Stopping mysqld: [FAILED] Initializing MySQL database: [ OK ] Installing validate password plugin: [ OK ] Starting mysqld: [ OK ]
1.4 Temporäres Passwort anzeigen
more /var/log/mysqld.log |grep temporary
1.5 Root-Passwort ändern
db1
ALTER USER 'root'@'localhost' IDENTIFIED BY '*****'; flush privileges; exit;
db2
ALTER USER 'root'@'localhost' IDENTIFIED BY '*****'; flush privileges; exit;
2. Master-Slave-Synchronisation konfigurieren
| master1 | 172.28.8.187 |
|---|---|
| master2 | 1 72.28.8.18 8 |
2.1 Konfigurieren Sie das verwendete Passwort von Master1, um sich bei Master2 anzumelden
Master1
create user 'repl' identified by '*****'; GRANT REPLICATION SLAVE ON *.* TO 'repl'@'172.28.8.188' IDENTIFIED BY '*****'; FLUSH PRIVILEGES; mysql> create database mydb default charset utf8;
Testen Sie, ob sich der Repuser am 172.28.8.188 bei der Datenbank anmelden kann
mysql -urepl -p -h172.28.8.187
2.1.1 Master1 konfiguriert my.cnf
# For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html [mysqld] # # Remove leading # and set to the amount of RAM for the most important data # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. # innodb_buffer_pool_size = 128M # # Remove leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # log_bin # # Remove leading # to set options mainly useful for reporting servers. # The server defaults are faster for transactions and fast SELECTs. # Adjust sizes as needed, experiment to find the optimal values. # join_buffer_size = 128M # sort_buffer_size = 2M # read_rnd_buffer_size = 2M datadir=/data/mysql socket=/var/lib/mysql/mysql.sock # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid explicit_defaults_for_timestamp=true tmpdir=/tmp character_set_server=utf8mb4 server-id=177 log-bin=/var/log/mysql/mysql-bin.log read-only=0 binlog-ignore-db=mysql binlog-ignore-db=information_schema expire_logs_days= 365 auto-increment-increment = 2 auto-increment-offset = 1 [client] default-character-set=utf8mb4
2.2 Master2 konfiguriert my.cnf
#除server-id外，其他与master1保持一致
2.2.1 Master2 zu Master 1 Erstellen Sie ein Kontopasswort und autorisieren Sie es
Stellen Sie Master2 auf Synchronisierung ein von master1create user 'repl' identified by '*****'; GRANT REPLICATION SLAVE ON *.* TO 'repl'@'172.28.8.187' IDENTIFIED BY '*****'; FLUSH PRIVILEGES;
Wenn es erscheint Die folgenden zwei Elemente zeigen an, dass die Konfiguration erfolgreich ist!
mysql> show master status; +------------------+----------+--------------+--------------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------+----------+--------------+--------------------------+-------------------+ | mysql-bin.000001 | 154 | mydb | mysql,information_schema | | +------------------+----------+--------------+--------------------------+-------------------+ 1 row in set (0.00 sec)
3. Dual-Master-SynchronisationstestGeben Sie die MySQL-Datenbank „master1“ ein.
mysql> show master status; +------------------+----------+--------------+--------------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------+----------+--------------+--------------------------+-------------------+ | mysql-bin.000001 | 154 | mydb | mysql,information_schema | | +------------------+----------+--------------+--------------------------+-------------------+ 1 row in set (0.00 sec)
Geben Sie „master2“ ein, um zu überprüfen, ob eine CRM-Datenbank und eine Mitarbeitertabelle vorhanden sind. mysql>CHANGE MASTER TO MASTER_HOST='172.28.8.188',MASTER_PORT=3306,MASTER_USER='repl',MASTER_PASSWORD='b4l:GGtG3s0*',MASTER_LOG_FILE='mysql-bin.000002',MASTER_LOG_POS=860;
mysql> SHOW SLAVE STATUS\G
mysql> START SLAVE;
mysql> SHOW SLAVE STATUS\G
Überprüfen Sie in Master1, ob gerade Daten in Master2 eingefügt wurden.
mysql>CHANGE MASTER TO MASTER_HOST='172.28.8.187',MASTER_PORT=3306,MASTER_USER='repl',MASTER_PASSWORD='2S1*8pr+BzqH^8T`',MASTER_LOG_FILE='mysql-bin.000003',MASTER_LOG_POS=1497; mysql> SHOW SLAVE STATUS\G mysql> START SLAVE; mysql> SHOW SLAVE STATUS\G
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