Replication enables data from one MySQL database server (the master) to be replicated to one or more MySQL database servers (the slaves).

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Mysql varchar issue on replication [closed]

This issue is showing it a duplicate key, but when I verify I could understand that one column having varchar(5) and the insert is having more than 5 character, normally it will get truncated and will ...
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596 views

MySQL slave server from dumps

I've created a slave server from live machine which is acting as a master now. I use the following procedure to create it: mysqldump --opt -Q -B --master-data=2 --all-databases > dump.sql then ...
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85 views

MySQL SSL replication

I'm currently testing MySQL replication over SSL. I have two mysql-slave pairs. I would like to configure second slave server for each pair in different data centre: Do I have to generate ...
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1answer
895 views

RDS slave (read replica) not replication

It appears overnight our Master RDS mysql server went offline for 3-4 minutes. When it came back online the replication was broken. On the slave, issuing SHOW SLAVE STATUS\G; "Got fatal error 1236 ...
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3k views

Redundant FreeRADIUS + MySQL

I’m working on some web service having it’s AAA implemented by FreeRADIUS + MySQL on Debian. The problem I’m working right now is HA & scalability of RADIUS. If the FreeRADIUS machine or MySQL ...
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1answer
714 views

Mysql replicate-rewrite-db not working

Been "slaving" on this issue all day. I have a master/slave setup that works, but when I try to replicate to a different database name on the slave it fails. This is what my.cnf looks like: ...
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3answers
217 views

MySQL replication automation?

I was wondering if there are any MySQL replication automators or managers that can take over the tasks of deploying MySQL slaves from a master. I come from an old school server management background, ...
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279 views

mysql relay log corrupted, How to recover?

I am running with one master and two slaves in a chain. ie Master-->Primary Slave-->Secondary Slave. The relay log of primary slave got corrupted. How can I recreate the relay log of ...
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4answers
672 views

Replicate main MySql db to a development server to play with real data

I have a main architecture with a MySql db, replication and backup, it's working fine. Now I also have a development server where I play with the code and I would like to use the data from the main db ...
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1k views

MySQL to PostgreSQL replication

Is there way to replicate in near-realtime MySQL changes to equal PostgreSQL database?
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46 views

Mysql Master-ColdMaster

I explain my case: I'm at Amazon AWS and I want to be fault tolerant on a entire region failure. My basic problem is to have the db in sync with 2 regions. My options: Master-Master (high lag) ...
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1answer
113 views

MySQL master-master replication between database running on 3 different server

I am trying to implement a master-master replication between 3 MySQL Databases running on 3 different servers. I implemented master-master replication for 2 servers, but can't figure out how can I ...
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2answers
151 views

MySQL replication not working on leap day

Though out of my "core" knowledge I maintain a two-way replicated MySQL database (primary and backup). It's been working fine mostly. All changes are almost instantly replicated between the two ...
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392 views

[MySQL]multiple-masters single-slave

Is is possible to have a setup where multiple mysql servers (containing different databases) are replicated in a single mysql slave server ? If yes, how to do it ?
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1answer
81 views

Backups from MySQL slave server — Good idea or bad?

I'm have one MySQL master and two MySQL slaves set up to replicate. I'm running my database backup process, consisting of an Xtrabakup (via the perl wrapper Innobackupex) backup and an atomic ...
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2answers
483 views

What do you think about this Debian Backup strategy? [closed]

I am not really a sys admin, I am mainly a developer with some unix knowledge, and because we don;t have any competent sysadmin , I have been delegated the task to implement the backup strategy. We ...
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2answers
352 views

Mysql Replicated database UPDATE not working

I have been trying to start replication in a MySQL database. I followed all the steps from the MySQL manual to setup and configure the replication. ...
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0answers
330 views

MySQL Replication not working on binlog-do-db

I set up MySQL master-master replication on my 2 Ubuntu VM. Configuration and connection done correctly according to this guide. Here is my problem. I print the master status on master 1 and it ...
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1answer
196 views

Automatic promotion of slave in MySQL master-slave replication

In a master-slave replication environment, what is required to automatically promote the slave as the master if the master goes down. What are common practice used to change the database reference ...
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154 views

Client to use the slave when the master is down in MySQL replication

Is it possible for the client to use the slave when the master is down in mysql replication? I have already set up a simple MySQL replication having a master and a slave. The client connects to the ...
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3answers
473 views

MySQL Master-Master Replication Lag

I have configured two MySQL servers (MySQL-1, MySQL-2) in master-master replication in the same datacenter using a local backend connection with the following options: ...
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3answers
16k views

How to sync two MySQL tables (on demand or via cron)

I have seen Cron sync mysql tables . But I cannot use replication. I used to use percona-toolkit and it worked perfectly. I could run the sync command on demand or just run it via cron. It would ...
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1answer
115 views

Setup MySQL replication - multiple machines?

i read a lot of mysql server repliaction tutorials, but there's no hint, if the slave server is on a second machine or on the same server but just another mysqld process? any advice? thanks in ...
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1answer
361 views

MySQL is failing to connect

I am building two mysql machines in master-slave config. Master has: mysql> create user 'repl'@'%.%.%.abc.mydomain.com' identified by 'mypassword'; mysql> grant replication slave on *.* to ...
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Recover a crashed MySQL master server from the slave

we are building a simple master/slave MySQL configuration using asynchronous replication, with MySQL enterprise 5.5.17 on both servers and innoDB based tables. In case of a crash of the master server ...
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1answer
2k views

Where can I find documentation on my.cnf directives?

I'm skimming through how to set up a basic master/slave replication in mysql. http://crazytoon.com/2008/01/29/mysql-how-do-you-set-up-masterslave-replication-in-mysql-centos-rhel-fedora/ However ...
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3answers
301 views

MySQL incremental backups and database replication

We have some servers that runs a tomcat app with a MySQL database. These servers are in different cities and the web app is used locally by our customers. On these servers a crontab job runs twice a ...
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1k views

MySQL on VMware for High Availability

Given a choice between the current database-level HA options for MySQL, like Master-Master, Cluster, or Galera, and vSphere HA for the machine running the MySQL master, which would you use or combine ...
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Is there a difference between the mysql native master/slave replication setup versus one that uses percona xtrabackup?

The reason I ask is because these instructions seem to indicate that setting up a slave is different when using xtrabackup.
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1answer
90 views

SQL Server 2005 to Mysql Replciation DATA duplication

I set up Replication between SQL Server 2005 and Mysql 5 using following articles : http://ratecontrol.blogspot.com/2010/12/one-way-transactional-replication-from.html and error setting up ...
2
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1answer
49 views

Finding binary log position to start replication

I'm setting up master/slave replication on a non-trivally-sized schema (around 3Gb of data) and I'm trying to work out the best way to go about it. I have a backup script working on the master that ...
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1answer
48 views

How to check if data are the same between to Mysql servers setup as master-master replication

I have two servers using Mysql Master-Master replication. Actually, only one server receives write orders. One of the databases is out of sync. Several tables don't have the same numbers of records, ...
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1answer
68 views

MySQL two master databases for two seperate apps

We have two different websites one is hosted in asia datacenter called it asiadata.com and other site is hosted in europe datacenter called it europedata.com. Currently we have only one master ...
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3answers
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What causes the MySQL error 1062 - duplicate entry when starting slave?

MySQL Master version: 5.5.16-1 MySQL Slave version: 5.5.18-1 The master's snapshot is created by: mysql> FLUSH TABLES WITH READ LOCK; shell> mysqldump --all-databases --master-data > ...
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1answer
81 views

Aggregating data from multiple MySQL servers

I have 10 MySQL servers and each one holds a database that needs to be replicated to a single, centralised MySQL server. The complexity is that each server must replicate its database to the same ...
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Measuring MySQL Replication Delay

How to measure MySQL replication delay between 2 MySQL servers ( 1 Master 1 Slave ) ? Given that two Xeon E5620 grade 1U servers are separate machine in same network segment, using MySQL Community ...
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1answer
464 views

making slave server as master for another server

I have three servers, Server X, Y, and Z. I have the main mysql DB on X (innodb DB). now I have created Master-Slave from X to Y. everything is working fine here. and now i set Y as a master for Z. ...
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2answers
1k views

Mysql Cluster not working on Ubuntu

I am unable to setup MySQL Cluster on ubuntu servers. As a starting point I started from the link but I am not successful and the tar ball version I download is 6.3.45. As I wanted to test the mysql ...
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1answer
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log error in mysql replication [closed]

I use mysql replication. At slave, i read in aa.err Statement may not be safe to log in statement format. Statement: update idv_product set visit = visit+1 where id = '173' limit 1 I don`t understad, ...
2
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1answer
171 views

my.cnf file makeup, does the [] headers matter?

I've got a pretty basic question, I am making a configuration script for mySQL replication between 2 new blank servers, now to make it a bit more failsafe I added the lines: sed '/log-bin/d' ...
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3answers
184 views

How do I quickly create new instances of complex MySQL database?

I'm managing an enterprise web application that uses Amazon's RDS as our database server. Our architecture is such that when a user signs up for a new account we create a brand new database for them ...
2
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1answer
355 views

Replication stops

I have 2 CentOS 5.5 servers runnig Mysql 5.5, configured as master-master replication. When on one server i have network problems, on another i see messages in log: 111105 2:38:30 [Note] Stop ...
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MySQL master-master replication: “Lock wait timeout exceeded”

I am setting up master-master replication with MySQL. Writes are done only to Master1. Master2 is slave of Master1 and is replicating perfectly. When I set Master1 as slave of Master2, I get lots of ...
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1answer
360 views

MAMP MySql Master Slave Replication on local machine [closed]

Has anyone got a good tutorial or info how to make a master slave replication on a local machine with MAMP 2.0? Should I install multiple MySQL instances or can I do it with one installation? Thanks ...
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2answers
108 views

MySQL Master Slave Replication Not Working

I setup MySQL master slave replication, but none of the databases, tables, and data is being copied over to the slave from the master. Here is the relevant configuration on the master: server-id=1 ...
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2answers
228 views

mysql master master master

I have n servers and I am planning to setup n master servers using master-master configuration. What architecture will be the best one ? Also I need to take care of auto-increment table things... ...
0
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1answer
47 views

msyql replication time

I am planning to setup mysql master-master or master-slave configuration. Yet to be decided. But my question is, is there any way to specify in the slave or master saying that it needs to check for ...
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2answers
958 views

Broken Slave (MySQL replication)

Last night one of the developer ran a wrong mySQL statement (Query inserting a row with duplicate primary key) on master machine. Suddenly the replication to its slave stopped. Slave started writing ...
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3answers
405 views

Is it possible with MySQL to have a database-specific Master Binary Log setup?

Is it possible for me to have a unique binary log per MySQL database on my MySQL server? I've done some googling and can't seem to find any solutions. Surely there's a way!!
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1answer
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mysql performance optimization after enabling replication

Over the weekend I upgrade my Ubuntu server from 9.10 to 10.04 which also updated my MySQL server. I also enabled MySQL replication over to another server as slave. I have not yet moved any ...