Question

mysql 5 innodb replication dual master

Asked by: sanatci

Dear Sirs,
I'm trying replication between two servers on mysql. Both OS is ubuntu, machines are same subnet. I used some documents for to do. When i change some records replication is working. But when i add new records not working, just one server storing data. I wait about 12 hours but not replicated.
Please see the codes.
1) How can work replication, what is the problem ?
2) Now, two database have different records, how can i merge it ?
Thanks a lot.

#my.cnf first server
[client]
port		= 3306
socket		= /var/run/mysqld/mysqld.sock
password        = *******
[mysqld_safe]
socket		= /var/run/mysqld/mysqld.sock
nice		= 0
 
[mysqld]
server-id=2
replicate-same-server-id=0
auto_increment_increment=10
auto_increment_offset=2
master-host = 192.168.0.18
master-user = repl
master-password=********
replicate-do-db=pts2008
replicate-ignore-table=pts2008.faturatahsilattoplami
replicate-ignore-table=pts2008.musteriemaillistesi
replicate-ignore-table=pts2008.qrygonderiac
replicate-ignore-table=pts2008.qrymypts
replicate-ignore-table=pts2008.qryschfiyat
replicate-ignore-table=pts2008.tablelist
replicate-ignore-table=pts2008.trpostaliste
 
log-bin = /var/log/mysql/mysql-bin.log
binlog-do-db = pts2008
relay-log = /var/log/mysql/slave-relay.log
relay-log-index = /var/log/mysql/slave-relay-log.index
expire_logs_days        = 10
max_binlog_size         = 500M
user		= mysql
pid-file	= /var/run/mysqld/mysqld.pid
socket		= /var/run/mysqld/mysqld.sock
port		= 3306
basedir		= /usr
datadir		= /var/lib/mysql
tmpdir		= /tmp
language	= /usr/share/mysql/english
skip-external-locking
key_buffer		= 16M
max_allowed_packet	= 16M
thread_stack		= 128K
thread_cache_size	= 8
max_connections        = 250
table_cache            = 256
thread_concurrency     = 10
query_cache_limit       = 16M
query_cache_size        = 256M
default-storage-engine=INNODB
expire_logs_days	= 10
max_binlog_size         = 100M
skip-bdb
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
innodb_buffer_pool_size=1536M
innodb_flush_log_at_trx_commit = 0
[mysqldump]
quick
quote-names
max_allowed_packet	= 16M
[mysql]
[isamchk]
key_buffer		= 16M
!includedir /etc/mysql/conf.d/
 
 
 
*********************   2. Serverl  ***************************
 
# my.cnf  second server
[client]
port		= 3306
socket		= /var/run/mysqld/mysqld.sock
password        = *******
[mysqld_safe]
socket		= /var/run/mysqld/mysqld.sock
nice		= 0
 
[mysqld]
server-id=2
replicate-same-server-id=0
auto_increment_increment=10
auto_increment_offset=2
master-host = 192.168.0.18
master-user = repl
master-password=*******
replicate-do-db=pts2008
replicate-ignore-table=pts2008.faturatahsilattoplami
replicate-ignore-table=pts2008.musteriemaillistesi
replicate-ignore-table=pts2008.qrygonderiac
replicate-ignore-table=pts2008.qrymypts
replicate-ignore-table=pts2008.qryschfiyat
replicate-ignore-table=pts2008.tablelist
replicate-ignore-table=pts2008.trpostaliste
 
log-bin = /var/log/mysql/mysql-bin.log
binlog-do-db = pts2008
relay-log = /var/log/mysql/slave-relay.log
relay-log-index = /var/log/mysql/slave-relay-log.index
expire_logs_days        = 10
max_binlog_size         = 500M
user		= mysql
pid-file	= /var/run/mysqld/mysqld.pid
socket		= /var/run/mysqld/mysqld.sock
port		= 3306
basedir		= /usr
datadir		= /var/lib/mysql
tmpdir		= /tmp
language	= /usr/share/mysql/english
skip-external-locking
key_buffer		= 16M
max_allowed_packet	= 16M
thread_stack		= 128K
thread_cache_size	= 8
max_connections        = 250
table_cache            = 256
thread_concurrency     = 10
query_cache_limit       = 16M
query_cache_size        = 256M
default-storage-engine=INNODB
expire_logs_days	= 10
max_binlog_size         = 100M
skip-bdb
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
innodb_buffer_pool_size=1536M
innodb_flush_log_at_trx_commit = 0
[mysqldump]
quick
quote-names
max_allowed_packet	= 16M
[mysql]
[isamchk]
key_buffer		= 16M
!includedir /etc/mysql/conf.d/

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Asked On: 2009-08-23 at 23:47:13ID24675731
Tags: mysql replication
,; innodb
,; master to master
,; my.cnf
,; database
,; ubuntu
Topics: MySQL Server
,; Databases Miscellaneous
Participating Experts: 1
Points: 500
Comments: 8

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Answers

by: theGhost_k8Posted on 2009-08-24 at 23:29:36ID: 25174931

First thing I noted is "server-id=2" why they are same on both config?

by: theGhost_k8Posted on 2009-08-24 at 23:45:53ID: 25175006

In case of master-master replication why both cnf have same "master-host = 192.168.0.18" !!
Avoid specifying connection parameters for replication in config. file - rather use CHANGE MASTER TO command.

Keep habit of checking error log in case of problem.

You may just confirm steps explained in following tutorials:
- http://www.experts-exchange.com/articles/Database/Miscellaneous/Quick-multi-mysql-server-installation-with-master-master-replication-on-same-windows-box.html
- http://www.howtoforge.com/mysql_master_master_replication

by: sanatciPosted on 2009-08-25 at 02:49:08ID: 25175842

Sorry, this i sent wrong config file for first server. I'll change tomorow.

by: theGhost_k8Posted on 2009-08-25 at 04:55:57ID: 25176501

Refer: http://www.maatkit.org/doc/mk-table-sync.html for syncing tables.

by: sanatciPosted on 2009-08-26 at 03:45:02ID: 25186107

This is first server my.ini.
Sorry for late answer.
Regards.

[client]
port		= 3306
socket		= /var/run/mysqld/mysqld.sock
password        = ***********
[mysqld_safe]
socket		= /var/run/mysqld/mysqld.sock
nice		= 0
 
[mysqld]
server-id=1
replicate-same-server-id=0
auto-increment-increment=10
auto-increment-offset=1
master-host=192.168.0.26
master-user=repl
master-password=********
master-connect-retry=60
replicate-do-db=pts2008
replicate-ignore-table=pts2008.faturatahsilattoplami
replicate-ignore-table=pts2008.musteriemaillistesi
replicate-ignore-table=pts2008.qrygonderiac
replicate-ignore-table=pts2008.qrymypts
replicate-ignore-table=pts2008.qryschfiyat
replicate-ignore-table=pts2008.tablelist
replicate-ignore-table=pts2008.trpostaliste
log-bin = /var/log/mysql/mysql-bin.log
binlog-do-db = pts20008
relay-log = /var/log/mysql/slave-relay.log
relay-log-index = /var/log/mysql/slave-relay-log.index
expire_logs_days        = 10
max_binlog_size         = 500M
 
user		= mysql
pid-file	= /var/run/mysqld/mysqld.pid
socket		= /var/run/mysqld/mysqld.sock
port		= 3306
basedir		= /usr
datadir		= /var/lib/mysql
#tmpdir=/mysqltemp
language	= /usr/share/mysql/english
#skip-external-locking
key_buffer		= 16M
max_allowed_packet	= 16M
#thread_stack=64
#thread_cache_size	= 8
max_connections        = 120
#table_cache=384
table_cache=512
# thread_concurrency     = 4
# alt sat1r 05 Kas1m 2008   dei_tirildi 1M idi 64K oldu
query_cache_limit=16K
query_cache_size=512M
#default-storage-engine=myisam
expire_logs_days	= 10
max_binlog_size         = 100M
skip-bdb
sql-mode="STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
#alt sat1r 1536 idi 2048 yapt1m
innodb_buffer_pool_size=1536M
innodb_flush_log_at_trx_commit=0
# alt sat1r 05 Kas1m 2008   dei_tirildi 0 d1 1 oldu
innodb_table_locks=0
#Size of a memory pool InnoDB uses to store data dictionary information and other internal data structures. A sensible value for this might be 2M, but the more tables you have in your application the more you will need to allocate here. If InnoDB runs out of memory in this pool, it will start to allocate memory from the operating system, and write warning messages to the MySQL error log.
#innodb_additional_mem_pool_size=8M
#Timeout in seconds InnoDB transaction may wait for a lock before being rolled back. InnoDB automatically detects transaction deadlocks in its own lock table and rolls back the transaction. If you use the LOCK TABLES command, or other transaction-safe storage engines than InnoDB in the same transaction, then a deadlock may arise which InnoDB cannot notice. In cases like this the timeout is useful to resolve the situation.
innodb_lock_wait_timeout=90
#This is relevant only if you use multiple tablespaces in InnoDB. This specifies the maximum how many .ibd files InnoDB can keep open at one time. The minimum value for this is 10. The default is 300.
innodb_open_files=200
#Number of file I/O threads in InnoDB. Normally, this should be 4, but on Windows disk I/O may benefit from a larger number.
#innodb_file_io_threads=8
#Helps in performance tuning in heavily concurrent environments.
# innodb_thread_concurrency=8
#Percentage of dirty pages allowed in bufferpool
#innodb_max_dirty_pages_pct=75
#Log all queries that have taken more than long_query_time seconds to execute to file.
# alttaki sat1rda 10 idi 60 yapt1m 21 ekim 2008 sal1
long_query_time=10
#The number of seconds the mysqld server is waiting for a connect packet before responding with 'Bad handshake'
#connect_timeout=0
#Number of seconds to wait for more data from a connection before aborting the read
# net_read_timeout=30
#Number of seconds to wait for a block to be written to a connection  before aborting the writ
# net_write_timeout=60
 
#Path to the temporary directory.
# tmpdir=/tmp  ramdrive temp için
# tmpdir=/dev/shm
tmpdir=/tmp
set-variable = tmpdir=/var/tmp
#Each thread that needs to do a sort allocates a buffer of this size.
# sort_buffer_size=4M
sort_buffer_size=16M
 
#Number of file I/O threads in InnoDB. Normally, this should be 4, but on Windows disk I/O may benefit from a larger number.
# innodb_file_io_threads=6
innodb_file_io_threads=4
#Helps in performance tuning in heavily concurrent environments.
#innodb_thread_concurrency=10
innodb_thread_concurrency=6
#Enter a name for the slow query log. Otherwise a default name will be used.
log-slow-queries=
#Permits the application to give the threads system a hint for the desired number of threads that should be run at the same time
#thread_concurrency=8
thread_concurrency=6
#How many threads we should keep in a cache for reuse.
#thread_cache_size=200
thread_cache_size=100
#When reading rows in sorted order after a sort, the rows are read through this buffer to avoid a disk seeks. If not set, then it's set to the value of record_buffer.
#read_rnd_buffer_size=64M
read_rnd_buffer_size=128M
#If an in-memory temporary table exceeds this size, MySQL will automatically convert it to an on-disk MyISAM table.
tmp_table_size=256M
#Don't allow creation of heap tables bigger than this.
max_heap_table_size=256M
 
 
#If no specific storage engine/table type is defined in an SQL-Create statement the default type will be used.
#default-storage-engine=innodb
 
 
[mysqldump]
quick
quote-names
max_allowed_packet	= 16M
[mysql]
[isamchk]
key_buffer		= 16M
!includedir /etc/mysql/conf.d/

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by: theGhost_k8Posted on 2009-08-26 at 06:57:49ID: 25187706

Is there anything specific said in error log?

Check proper variable names: Its not "underscore".
auto-increment-increment
auto-increment-offset

by: sanatciPosted on 2009-08-26 at 07:05:51ID: 25187797

I fixed underscores on second server. After restart i saw following log records.
Thanks.

*****   mysql restart log ****
Aug 26 17:02:23 anadolu mysqld[11677]: 090826 17:02:23 [Note] /usr/sbin/mysqld: Normal shutdown
Aug 26 17:02:23 anadolu mysqld[11677]: 
Aug 26 17:02:23 anadolu mysqld[11677]: 090826 17:02:23 [Note] Slave I/O thread killed while reading event
Aug 26 17:02:23 anadolu mysqld[11677]: 090826 17:02:23 [Note] Slave I/O thread exiting, read up to log 'mysql-bin.000004', position 98
Aug 26 17:02:23 anadolu mysqld[11677]: 090826 17:02:23 [Note] Error reading relay log event: slave SQL thread was killed
Aug 26 17:02:23 anadolu mysqld[11677]: 090826 17:02:23  InnoDB: Starting shutdown...
Aug 26 17:02:26 anadolu mysqld[11677]: 090826 17:02:26  InnoDB: Shutdown completed; log sequence number 2 1007450206
Aug 26 17:02:26 anadolu mysqld[11677]: 090826 17:02:26 [Note] /usr/sbin/mysqld: Shutdown complete
Aug 26 17:02:26 anadolu mysqld[11677]: 
Aug 26 17:02:26 anadolu mysqld_safe[24207]: ended
Aug 26 17:02:28 anadolu mysqld_safe[24290]: started
Aug 26 17:02:28 anadolu mysqld[24293]: 090826 17:02:28 [Warning] The syntax for replication startup options is deprecated and will be removed in MySQL 5.2. Please use 'CHANGE MASTER' instead.
Aug 26 17:02:29 anadolu mysqld[24293]: 090826 17:02:29  InnoDB: Started; log sequence number 2 1007450206
Aug 26 17:02:29 anadolu mysqld[24293]: 090826 17:02:29 [Note] Slave SQL thread initialized, starting replication in log 'mysql-bin.000004' at position 98, relay log '/var/log/mysql/slave-relay.000085' position: 235
Aug 26 17:02:29 anadolu mysqld[24293]: 090826 17:02:29 [Note] /usr/sbin/mysqld: ready for connections.
Aug 26 17:02:29 anadolu mysqld[24293]: Version: '5.0.75-0ubuntu10.2-log'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  (Ubuntu)
Aug 26 17:02:29 anadolu mysqld[24293]: 090826 17:02:29 [Note] Slave I/O thread: connected to master 'repl@192.168.0.18:3306',  replication started in log 'mysql-bin.000004' at position 98
Aug 26 17:02:30 anadolu /etc/mysql/debian-start[24344]: Upgrading MySQL tables if necessary.
Aug 26 17:02:30 anadolu /etc/mysql/debian-start[24353]: Looking for 'mysql' as: /usr/bin/mysql
Aug 26 17:02:30 anadolu /etc/mysql/debian-start[24353]: Looking for 'mysqlcheck' as: /usr/bin/mysqlcheck
Aug 26 17:02:30 anadolu /etc/mysql/debian-start[24353]: This installation of MySQL is already upgraded to 5.0.75, use --force if you still need to run mysql_upgrade
Aug 26 17:02:30 anadolu /etc/mysql/debian-start[24358]: Checking for insecure root accounts.
Aug 26 17:02:30 anadolu /etc/mysql/debian-start[24362]: Triggering myisam-recover for all MyISAM tables

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by: theGhost_k8Posted on 2009-08-27 at 23:16:16ID: 25205307

This log don't show any problem - Is the replication working correctly?
From 192.168.0.26 --> 192.168.0.18 and reverse? Or atleast one master-slave is working correctly?
Do you see any thing on your error logs of both servers?

20120131-EE-VQP-002

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mysql 5 innodb replication dual master

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