Master ServerThe following steps are required to configure a DATA server as master. The first step is to create an appropriate configuration module. This is done with the following command: | Translations Ignore |
|---|
| Code Block |
|---|
| language | bash |
|---|
| title | Configure MySQL Master |
|---|
| cat <<EOFF > /etc/my.cnf.d/jtel-master.cnf
# Custom MySQL settings for a specific SQL master server
#
# WARNING: This file is specific to the master server
[mysqld]
#
# Replication Options
#
# Specific options for MASTER role
#
server_id = 1
binlog_format = ROW
expire_logs_days = 3
max_binlog_size = 100M
log_bin = binlog
relay_log = mysqld-relay-bin
relay_log_index = mysqld-relay-bin.index
relay_log_info_file = relay-log.info
EOFF |
|
| Note |
|---|
The value server_id appears both in the configuration modules for master servers and in the configuration modules for slave servers. It is important to ensure that this value is unique. No DATA servers in a group may have the same server_id. |
Next, a user is created with which the slave servers can connect to the master server - replace <password> with the corresponding password: | Status |
|---|
| colour | Red |
|---|
| title | Caution Password |
|---|
|
| Translations Ignore |
|---|
| Code Block |
|---|
mysql -u root -p<password> -v -e"CREATE USER 'repl'@'%' IDENTIFIED WITH mysql_native_password BY '<password>'"
mysql -u root -p<password> -v -e"GRANT REPLICATION SLAVE ON *.* TO 'repl'@'%'"
mysql -u root -p<password> -v -e"FLUSH PRIVILEGES" |
|
Afterwards the MySQL server must be restarted so that all settings are applied: | Translations Ignore |
|---|
| Code Block |
|---|
| service mysqld restart |
|
The following steps are required to configure a DATA server as a slave. This is an unencrypted replication setup. The first step is to create an appropriate configuration file. This is done with the following command: | Translations Ignore |
|---|
| Code Block |
|---|
| language | bash | title | Configure MySQL slave |
|---|
| cat <<EOFF > /etc/my.cnf.d/jtel-slave.cnf
# Custom MySQL settings for a specific SQL slave server
#
# WARNING: This file is specific to the slave server
[mysqld]
# Specific options for SLAVE role
#
server_id = 101
log_slave_updates
relay_log = mysqld-relay-bin
relay_log_index = mysqld-relay-bin.index
relay_log_info_file = relay-log.info
skip-log-bin
EOFF |
|
| Note |
|---|
The value server_id appears both in the configuration modules for master servers and in the configuration modules for slave servers. It is important to ensure that this value is unique. No DATA servers in a group may have the same server_id. |
Afterwards the MySQL server must be restarted so that all settings are applied: | Translations Ignore |
|---|
| Code Block |
|---|
| service mysqld restart |
|
| 