MySQL master-master – slave replication (Ubuntu 12.04)

mysql-replication
$ aptitude install mysql-server

Will install latest version of mysql server  (do it on all servers)
configure master-1
$ vim /etc/mysql/my.cnf

#

# The MySQL database server configuration file.
#
#
# You can copy this to one of:
# – “/etc/mysql/my.cnf” to set global options,
# – “~/.my.cnf” to set user-specific options.
#
# One can use all long options that the program supports.
# Run program with –help to get a list of available options and with
# –print-defaults to see which it would actually understand and use.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
# This will be passed to all mysql clients
# It has been reported that passwords should be enclosed with ticks/quotes
# escpecially if they contain “#” chars…
# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
prompt = ‘\u@\h [\d] > ‘
default-character-set = utf8
user = root
password = password
# Here is entries for some specific programs
# The following values assume you have at least 32M ram
# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
#
# * Basic Settings
#
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /mnt/db/lib/mysql/
tmpdir = /tmp
lc-messages-dir = /usr/share/mysql
skip-external-locking
character_set_server = utf8
collation_server = utf8_general_ci
character_set_filesystem = utf8
default-storage-engine=innodb
#log-slave-updates =1
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address = 0.0.0.0
#
# * Fine Tuning
#
key_buffer = 16M
max_allowed_packet = 16M
thread_stack = 192K
thread_cache_size       = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover         = BACKUP
#max_connections        = 100
#table_cache            = 64
#thread_concurrency     = 10
#
# * Query Cache Configuration
#
query_cache_limit = 1M
query_cache_size        = 16M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file        = /var/log/mysql/mysql.log
#general_log             = 1
#
# Error log – should be very few entries.
#
log_error = /mnt/db/log/error.log
#
# Here you can see queries with especially long duration
log_slow_queries = /mnt/db/log/mysql-slow.log
long_query_time = 2
#log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
#       other settings you may need to change.
server-id = 1
log_bin = /mnt/db/log/binlog/mysql-bin.log
log_bin_index           = /mnt/db/log/binlog/mysql-bin.index
auto_increment_increment = 2
auto_increment_offset   = 1
sync_binlog             = 1
binlog-format           = mixed
sync_master_info        = 0
relay-log = /mnt/db/log/relay/relay-bin
relay-log-index = /mnt/db/log/relay/relay-bin.index
sync_relay_log          = 0
sync_relay_log_info     = 0
innodb_flush_log_at_trx_commit = 1
innodb_support_xa       = 1
max_connect_errors      = 1000000
expire_logs_days = 8
max_binlog_size         = 1000M
innodb_flush_method            = O_DIRECT
innodb_log_files_in_group      = 2
#binlog_do_db = include_database_name
#binlog_ignore_db = include_database_name
#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!
#
# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
innodb_file_per_table
innodb_buffer_pool_size=3G
# For generating SSL certificates I recommend the OpenSSL GUI “tinyca”.
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem
[mysqldump]
quick
quote-names
max_allowed_packet = 16M
[mysql]
#no-auto-rehash # faster start of mysql but no tab completition
[isamchk]
key_buffer = 16M
#
# * IMPORTANT: Additional settings that can override those from this file!
#   The files must end with ‘.cnf’, otherwise they’ll be ignored.
#
!includedir /etc/mysql/conf.d/

configure master-2

$ vim /etc/mysql/my.cnf

#

# The MySQL database server configuration file.
#
# You can copy this to one of:
# – “/etc/mysql/my.cnf” to set global options,
# – “~/.my.cnf” to set user-specific options.
#
# One can use all long options that the program supports.
# Run program with –help to get a list of available options and with
# –print-defaults to see which it would actually understand and use.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
# This will be passed to all mysql clients
# It has been reported that passwords should be enclosed with ticks/quotes
# escpecially if they contain “#” chars…
# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
prompt = ‘\u@\h [\d] > ‘
default-character-set = utf8
user = root
password = password
# Here is entries for some specific programs
# The following values assume you have at least 32M ram
# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
#
# * Basic Settings
#
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /mnt/db/lib/mysql/
tmpdir = /tmp
lc-messages-dir = /usr/share/mysql
skip-external-locking
character_set_server = utf8
collation_server = utf8_general_ci
character_set_filesystem = utf8
default-storage-engine=innodb
# need for replic works from slave to slavelog-slave-updates =1
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address = 0.0.0.0
#
# * Fine Tuning
#
key_buffer = 16M
max_allowed_packet = 16M
thread_stack = 192K
thread_cache_size       = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover         = BACKUP
#max_connections        = 100
#table_cache            = 64
#thread_concurrency     = 10
#
# * Query Cache Configuration
#
query_cache_limit = 1M
query_cache_size        = 16M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file        = /var/log/mysql/mysql.log
#general_log             = 1
#
# Error log – should be very few entries.
#
log_error = /mnt/db/log/error.log
#
# Here you can see queries with especially long duration
log_slow_queries = /mnt/db/log/mysql-slow.log
long_query_time = 2
#log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
#       other settings you may need to change.
server-id = 2
log_bin = /mnt/db/log/binlog/mysql-bin.log
log_bin_index           = /mnt/db/log/binlog/mysql-bin.index
auto_increment_increment = 2
auto_increment_offset   = 2
sync_binlog             = 1
binlog-format           = mixed
sync_master_info        = 0
relay-log = /mnt/db/log/relay/relay-bin
relay-log-index = /mnt/db/log/relay/relay-bin.index
sync_relay_log          = 0
sync_relay_log_info     = 0
innodb_flush_log_at_trx_commit = 1
innodb_support_xa       = 1
max_connect_errors      = 1000000
expire_logs_days = 8
max_binlog_size         = 1000M
innodb_flush_method            = O_DIRECT
innodb_log_files_in_group      = 2
#binlog_do_db = include_database_name
#binlog_ignore_db = include_database_name
#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!
#
# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
innodb_file_per_table
innodb_buffer_pool_size=3G
# For generating SSL certificates I recommend the OpenSSL GUI “tinyca”.
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem
[mysqldump]
quick
quote-names
max_allowed_packet = 16M
[mysql]
#no-auto-rehash # faster start of mysql but no tab completition
[isamchk]
key_buffer = 16M
#
# * IMPORTANT: Additional settings that can override those from this file!
#   The files must end with ‘.cnf’, otherwise they’ll be ignored.
#

!includedir /etc/mysql/conf.d/

configure slave
vim /etc/mysql/my.cnf

 

#
# The MySQL database server configuration file.
#
# You can copy this to one of:
# – “/etc/mysql/my.cnf” to set global options,
# – “~/.my.cnf” to set user-specific options.
#
# One can use all long options that the program supports.
# Run program with –help to get a list of available options and with
# –print-defaults to see which it would actually understand and use.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
# This will be passed to all mysql clients
# It has been reported that passwords should be enclosed with ticks/quotes
# escpecially if they contain “#” chars…
# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
[client]
port = 3306
socket = /var/run/mysqld/mysqld.sock
prompt = ‘\u@\h [\d] > ‘
default-character-set = utf8
user = root
password = password
# Here is entries for some specific programs
# The following values assume you have at least 32M ram
# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
#
# * Basic Settings
#
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /mnt/db/lib/mysql/
tmpdir = /tmp
lc-messages-dir = /usr/share/mysql
skip-external-locking
character_set_server = utf8
collation_server = utf8_general_ci
character_set_filesystem = utf8
default-storage-engine=innodb
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address = 0.0.0.0
#
# * Fine Tuning
#
key_buffer = 16M
max_allowed_packet = 16M
thread_stack = 192K
thread_cache_size       = 8
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
#myisam-recover         = BACKUP
#max_connections        = 100
#table_cache            = 64
#thread_concurrency     = 10
#
# * Query Cache Configuration
#
query_cache_limit = 1M
query_cache_size        = 16M
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file        = /var/log/mysql/mysql.log
#general_log             = 1
#
# Error log – should be very few entries.
#
log_error = /mnt/db/log/error.log
#
# Here you can see queries with especially long duration
#log_slow_queries = /mnt/db/log/mysql-slow.log
long_query_time = 10
#log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
#       other settings you may need to change.
server-id = 11
#log_bin = /mnt/db/log/binlog/mysql-bin.log
#log_bin_index           = /mnt/db/log/binlog/mysql-bin.index
##auto_increment_increment = 3
##auto_increment_offset   = 1
#sync_binlog             = 1
#binlog-format           = mixed
#sync_master_info        = 0
relay-log = /mnt/db/log/relay/relay-bin
relay-log-index = /mnt/db/log/relay/relay-bin.index
relay-log-info-file = /mnt/db/log/relay/relay-bin.info
#sync_relay_log          = 0
#sync_relay_log_info     = 0
#innodb_flush_log_at_trx_commit = 1
#innodb_support_xa       = 1
#max_connect_errors      = 1000000
#expire_logs_days = 8
#max_binlog_size         = 1000M
#binlog_do_db = include_database_name
#binlog_ignore_db = include_database_name
#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!
#
# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
innodb_file_per_table
innodb_buffer_pool_size=3G
# For generating SSL certificates I recommend the OpenSSL GUI “tinyca”.
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem
[mysqldump]
quick
quote-names
max_allowed_packet = 16M
[mysql]
#no-auto-rehash # faster start of mysql but no tab completition
[isamchk]
key_buffer = 16M
#
# * IMPORTANT: Additional settings that can override those from this file!
#   The files must end with ‘.cnf’, otherwise they’ll be ignored.
#
!includedir /etc/mysql/conf.d/
edit path
$ vim /etc/apparmor.d/usr.sbin.mysqld

 

# vim:syntax=apparmor
# Last Modified: Tue Jun 19 17:37:30 2007
#include <tunables/global>
/usr/sbin/mysqld {
#include <abstractions/base>
#include <abstractions/nameservice>
#include <abstractions/user-tmp>
#include <abstractions/mysql>
#include <abstractions/winbind>
capability dac_override,
capability sys_resource,
capability setgid,
capability setuid,
network tcp,
/etc/hosts.allow r,
/etc/hosts.deny r,
/etc/mysql/*.pem r,
/etc/mysql/conf.d/ r,
/etc/mysql/conf.d/* r,
/etc/mysql/*.cnf r,
/usr/lib/mysql/plugin/ r,
/usr/lib/mysql/plugin/*.so* mr,
/usr/sbin/mysqld mr,
/usr/share/mysql/** r,
/mnt/db/log/mysql.log rw,
/mnt/db/log/mysql.err rw,
/mnt/db/lib/mysql/ r,
/mnt/db/lib/mysql/** rwk,
/mnt/db/log/ r,
/mnt/db/log/relay/ r,
/mnt/db/log/binlog/ r,
/mnt/db/log/* rw,
/mnt/db/log/relay/* rw,
/mnt/db/log/binlog/* rw,
/var/run/mysqld/mysqld.pid rw,
/var/run/mysqld/mysqld.sock w,
/run/mysqld/mysqld.pid rw,
/run/mysqld/mysqld.sock w,
/sys/devices/system/cpu/ r,
# Site-specific additions and overrides. See local/README for details.
#include <local/usr.sbin.mysqld>
}
$ mkdir -p /mnt/db/lib/mysql/; mkdir -p /mnt/db/log/binlog/; mkdir -p /mnt/db/log/relay/
$ touch /mnt/db/log/binlog/mysql-bin.log; touch /mnt/db/log/binlog/mysql-bin.index; touch /mnt/db/log/relay/relay-bin; touch /mnt/db/log/relay/relay-bin.index; touch /mnt/db/log/mysql-slow.log
$ cp /var/log/mysql/error.log /mnt/db/log/error.log

$ chown -R mysql: /mnt/db/
restart mysql service in all servers
$ restart mysql
In all servers in mysql console:
GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO ‘repl’@’%’ IDENTIFIED BY PASSWORD ‘password’;
In Master-1 in mysql console:
CHANGE MASTER to MASTER_HOST=’Server-2.dns.name’,MASTER_USER=’repl’, MASTER_PASSWORD=’password’, MASTER_LOG_FILE=’mysql-bin.000001′,MASTER_LOG_POS=0;
In Master-2 in mysql console:
CHANGE MASTER to MASTER_HOST=’Server-1.dns.name’,MASTER_USER=’repl’, MASTER_PASSWORD=’password’, MASTER_LOG_FILE=’mysql-bin.000001′,MASTER_LOG_POS=0;
In Slave in mysql console:
CHANGE MASTER to MASTER_HOST=’Server-2.dns.name’,MASTER_USER=’repl’, MASTER_PASSWORD=’password’, MASTER_LOG_FILE=’mysql-bin.000001′,MASTER_LOG_POS=0;
In all servers in mysql console:
START SVAVE;

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