Replication is the process of sharing any level of information so as to ensure consistency between redundant hardware/software resources to improve reliability, fault-tolerance, and accessibility

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Determining replication traffic

is there any way to determine from server statistics* running MySQL, how much traffic(bits per second) WOULD replication consume between 2 servers, without setting-up the actual replication between ...
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MySQL - Best long read query solution within a replication based system

I'm working on a project where work in a queue requires a database read against heterogeneous table schemas (InnoDB/MyISAM). The queries constructed during the "read" process can result in 10-15 ...
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What synchronizes two delayed replicas, which is part of the replica set, included in sharded cluster?

Please take a look at my mongodb map at http://postimg.org/image/krzvmep4d/ What synchronizes two delayed replicas, which is part of the replica set, included in sharded cluster? How can I use my ...
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Native replication from Percona XtraDB Cluster to a standard stand-alone slave

I'm replicating from one node of a three-member Percona XtraDB cluster to a separate slave, using regular MySQL replication. The node is set to write binlog in ROW mode, with log_slave_updates=true ...
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mysql 5.6 GTID replication 'Got fatal error 1236 from master when reading data from binary log'

I Checked SHOW SLAVE STATUS error is "'Got fatal error 1236 from master when reading data from binary log: ''The slave is connecting using CHANGE MASTER TO MASTER_AUTO_POSITION = 1, but the master ...
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Approaches for Real time copy of database on same SQL Server instance

I have a draft of requirements that look like this: Production database should be copied in real-time to "Pre-prod" database The Pre-prod database should be available to read and update It should be ...
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After adding a slave to Master - Master configuration, slave syncs from only one master

Futher to my previous question, Here is what we have +<------+ | ^ V | S1<---M1 M2 | ^ V | +-------+ what happens is Upon ...
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SQL Server replication conflicts after migration from 2000 to 2008

I got a suggestion over at Stackoverflow to post here....greatful for any and all help. Please bear with me I think this might take a while to explain. For many years now my company has hosted a ...
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Breaking Semisynchronous Replication in MySQL 5.5

I've set up Semisynchronous Replication between two MySQL 5.5 servers running on Windows 7. My application is running and updating the database of the master server and same is being updated in the ...
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687 views

Master to Slave to Slave Configuration in MySQL

We currently have 3 MySQL Servers running; the first which contains production data and is due to be retired mysqld Ver 5.5.28-0ubuntu0.12.04.2 for debian-linux-gnu on x86_64 ((Ubuntu)) mysql> ...
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Change the Existing Topology of a MySQL Replication Setup

I want to be able to edit the topology of an existing replication, is that possible? For example if I have a star topology, I want to edit it to make it a ring one. How can I do that? I'm thinking ...
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MySql proxy to replication configuration

Is there any solution (say a proxy) that makes MySQL replication cluster behave like one database towards developers? And developers then don't need to worry about using master to write and slaves to ...
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Where can I learn about MySQL master/slave, master/master, or clustering setups?

What are the best resources you've read or watched about setting up master/slave or clustering for database replication? I don't know much about this. I have a database that is getting rather large ...
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Some MySQL slave errors?

Master version: mysql-server-5.5.14-1.el5.remi Slave version: Percona-XtraDB-Cluster-server-5.5.24-23.6.340 Binlog format: ROW based I'm using PRM to setup HA for MySQL. Sometime, MySQL slave ...
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JBoss/Alfresco cannot write on slave after failover [duplicate]

Possible Duplicate: JBoss don't fail over MySQL slave using datasource I'm trying to set up an high available MySQL "cluster", using a Master / Slave Replication configuration. I want ...
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Replication Broken, List Out of Sync Tables

In a master-slave setup on MySQL 5.5 on RHEL 6.1, when db replication breaks (for whatever reason), what is a good way to: check (and alert) replication is broken? get a list of tables that are out ...
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Slave settings not working

I have this machine as slave. Below is the command I ran and stuck. I done the change on the config file and set the id=2 too. Anything else I am missing here? slave start; ERROR 1201 (HY000): Could ...
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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 setup a simple mysql replication having a master and a slave. The client connects to the ...
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Mysql master-master permission replication issue

I came to know it's safe to replicate mysql database to have the users and permissions replicated, from a post in ServerFault is-it-ok-to-replicate-mysql-db. I have setup master-master replication ...
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Duplicate entry in mysql slave

I have a mysql master-slave replication setup. when I checked "show slave status", I got the result as "Slave_Sql_running:No" and Last error as "Duplicate entry 'x' on query." But when I tried to ...
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Master port is disabled from Public IP, MySQL log is not getting refreshed

My MySQL Replication setup is over internet. Master is on Public IP. If I stop mysql service in master, immediately an error message is thrown in slave. And when I start the service, slave is ...
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Issue with SQL Server 2008 replication

I'm doing merge replication between two SQL Server 2008 machine.But,when I attempt to do any modification on system,I got the following error. The Merge Agent failed because the schema of the article ...
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“Uninitialized subscription” on replication monitor when creating a subscription on transactional replication [closed]

we have the same question here. However, that does not answer my question below. I'm using SQL Server 2012 and trying to implement transactional replication. I'm using the system stored procedures to ...
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The process is running and is waiting for a response from the server - transactional replication

I could not yet figure it out why one of my transaction replication subscription is constantly coming out with the following annoying message: The process is running and is waiting for a response ...
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Creating SSL certificates for a MongoDB replication set

So I figured out my issues regarding connecting a node to a node or a client to a node in my replication set and now I'm trying to figure out how to bring this together so that all of my nodes can ...
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PostgreSQL synchronous replication time out?

I'm using PostgreSQL 9.3 with synchronous replication. I have 2 synchronous replicators and 1 async replicator. My problem is when 2 synchronous replicators are down, transaction will wait ...
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MySQL Slave not updated

This might be a duplicate of questions on the same problem asked before. But all the suggestions to the previous questions do not seem to work in my case. I have set up Replication using SSH Tunnel. ...
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How to add an article to existing replication

This is the first time I am going to add tables to replication. I have outlined the below steps to add a new table to existing replication. Please correct me if I am wrong. The table is just created ...
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How to copy a table during replication in MySQL?

I have two MySQL servers; db1 and db2. db1 is production and db2 is for reporting. I have setup replication where db1 is master and db2 is slave. This current setup works fine. I was given a new ...
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MySQL SSL encryption

Does setting MASTER_SSL to 1 in change master ensure encryption without specifying options MASTER_SSL_CA, MASTER_SSL_CAPATH, MASTER_SSL_CERT, MASTER_SSL_KEY ? After setting MASTER_SSL to 1, show ...
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Database replication using wamp?

I have created a POS system for our corporation, in the HQ we have a wamp server with the main database, we also have more than 25 branches across the country. I will setup a wamp server on each ...