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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AWS RDS. Upgrade MySQL from 5.5 to 5.6, external replica and Access denied

I want to create external read replica for my RDS instance using this doc: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/MySQL.Procedural.Exporting.NonRDSRepl.html My old instance is running ...
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MySQL Cluster with no access to Data Nodes

I'd like to set up a MySQL Cluster for HA, but the client of the data cannot yet use ClusterJ. I would like create 2 SQL Nodes and access only them from the client. i.e. No access to the NDB Data ...
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MySQL Replication Over SSH - Last_IO_Errno: 2003 - error connecting to master

I have MySQL MASTER/SLAVE replication working on two test boxes (Centos 6.4 / MySQL 5.5.32) over LAN. Securing the connection over ssh causes connection problems from the SLAVE machine: (Sample of ...
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MySQL - Does the change in MySQL master db password affect on slave db?

I want to change the MySQL DB password on the master db. My question is: do we have to care for the slave DB when changing the master database password?
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MySQL replication, slave don't connect

I try in mi LAN with 2 VM a master-to-master replication, configure: #bind-address = 127.0.0.1 server-id = 2 auto_increment_increment = 2 auto_increment_offset = 2 log_bin = ...
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Restore database by files from broken Ubuntu server

I'm pretty lost right now. The RAID controller auf my server broke and all attached hard drives were corrupted. Luckily I copied the plain files off the server right before the crash (phew). I set ...
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273 views

update and insert MySQL DB on AWS RDS with local MySQL DB

I have created an RDS database and have used mysqldump to send all my local data to that remote database using the following commands: $ mysqldump -u root fishDB > localDB.sql $ mysql -h ...
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57 views

MySQL Replication across two mounts on AWS Amazon Linux

Recently we took advantage of the SSD instance stores available on AWS. While these are great, they obviously get deleted when the instance dies. Obviously the performance of non Provision IOPS is ...
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423 views

Duplicating data between two Percona Xtradb clusters using MySQL replication

We currently have a 3 node Percona Xtradb cluster running in a single data center. We want to add fault tolerance in case of disaster to prevent reliance on a single data center and synchronize our ...
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294 views

MySQL Master-Master Replication Slave Thread Issue

I'm currently trying to set up Master-Master MySQL replication between 2 servers, but I'm encountering an unusual issue. I'm getting this error on my MySQL log: Slave: Table 'phpmyadmin.pma_recent' ...
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283 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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2answers
105 views

MySQL Replication threeway

We have MySQL Multi-Master replication setup between two servers ( A & B ). It has been working for a few years now and life is good. The management tool in our office connects directly to ...
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Mysql Master to Master Configuration Steps

In our project currently we are using Mysql Master to Master replication, both mysql server version is mysql 5.1. we are going to upgrade the replication then our requirement is one mysql server ...
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106 views

What is wrong with this iptable for Mysql Replication

I'm not quite used to IPTables and I'm trying to run an iptables script to allow only ssh connection from all and connection to mysql server only from specified IPs. I made a bash script for this, ...
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1answer
30 views

mySQL 'Stop Slave' on Server Reboot

Is there a way in mySQL to issue a 'stop slave' command when the server is rebooted to prevent the replication from getting out of sync? I haven't been able to find anything definitive on this.
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279 views

MySQL replication hung after slave goes offline and comes back online again

I have a master server and several slave servers replicating a single database. I am using in MySQL 5.0 in SLES 11. During fault tolerance testing I found that when the slave's network connection ...
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re-enabling a table for mysql replication

We were able to setup mysql master-slave replication with the following version on both master/slave: mysqld Ver 5.5.28-29.1-log for Linux on x86_64 (Percona Server (GPL), Release 29.1) One day, ...
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92 views

MySQL keeps starting logger and constantly restarts?

Alright, I have updated version 5.1 to version 5.6 without uninstalling the old one by using update-alternatives. This works just fine on our production/master server, but our replication slave seems ...
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216 views

MySQL Replication Stale

I had some interesting problems with Maria DB. 1st I have max_connections in config under section [mysqld] but the value is always 214 (default) after restart. So the problem is I can't defined the ...
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How to reset mysql's replication settings completely, without reinstalling it?

I set up mysql replication by adding references to binlogs, relay logs etc in my.cnf restarted mysql, it worked. I wanted to change it so I deleted all binlog related files including log-bin.index, ...
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Diagnosing Mysql Replication Issues

We have a mysql replication client running on our backup server. Since a power failure last week it's stopped replicating. Before this it was running uninterrupted for several months. I've tried ...
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285 views

Fail safe SSH tunnel Ubuntu (always up)

I need your advise for a very important technical issue on our project. We need to have a SSH tunnel always up between our two servers. We have a MySQL database replication process going between those ...
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239 views

mysql master-master setup as a way to simply master-slave promotion

I'm trying to see if the following plan is viable. Goal here is to be able to do HA (uptime) and not necessarily for load -- writes are fine on one MySQL 5.5 server (with innodb) but not really ...
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Mysql MariaDB replication broken

I have a primary DB and two replicates. replicate1 became corrupted when the linux server was rebooted without stopping mysqld. I want to load replicate1 with a dump I've taken from replicate2 with ...
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Is it safe to lock tables on a mysql replica slave?

I have a master mysql database where the application writes and read production data, and then I setup a slave database just in case something goes wrong with the master database server (and I can do ...
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295 views

What are the options for any SQL Multi Master Master replication?

I am looking for a proper way to do Multi Master Master replication. I am currently using MySQL but open to switching to Postgres or Oracle if needed. So far the only solution I find is ...
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MySQL replication and replicating MySQL users

I have a MySQL Main Server and a slave server which replicates the main server. My question is, the new MySQL users added to the Main Server do not get replicated to the slave server. How can I make ...
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MySQL Master-Slave Replication

I am trying to set up highly-available master-slave MySQL replication. I plan to have two servers on different networks with one running as master and the other running as slave like so: A ...
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How to prevent bad queries from breaking replication?

For my personal experience, mysql replication is fragile. I know that there area many things not to do beacuse they could break replication, but we are humans and an error could always occur. So I ...
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MySQL slave server not removing old relay binlogs

I have a MySQL server with slave replication on another host. Today I stumbled across the high disk usage of the slave host and invastigated what takes up all the space. As it turns out this space is ...
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How to setup MySQL replication with minimal downtime

Basically we have a large MySQL database and we're looking to do replication to a slave (master slave setup). Do you guys have any step-by-step guide on how to do this with MINIMAL downtime on the ...
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269 views

mysql cluster node lost connection shutdown

I'm testing a mysql cluster with VirtualBox using several virtual machines: Each virtual machine (2 in total) has a mysqld and ndbd node. Plus there's a vm for the ndb_mgmd to manage the cluster. I ...
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MySQL Slave not processing relay logs fast enough

I have a Master-Master cluster with 2 Percona 5.5.30 servers. (Lets name them 1 & 2) The OS is FreeBSD 9.1 I have an issue that server 2 is not processing the relay log fast enough. I know that ...
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MySql server master-master seconds_behind_master jumps

I'm running a 4 servers master-master cluster of MySql. (2 servers version 5.1, and 2 version 5.5) While checking the slave status, i see the seconds_behind_master at 0, and half a second after i see ...
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MySQL replication & logrotate

I'm using MySQL Master-Slave replication for backup purposes (for a few days). Today after changing to expire_logs_days = 3 on master and slave I got this message (from slave): ...
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Using Amazon RDS (or similar) as a slave

Officially, RDS instances can't be directly set up to slave non-RDS databases. My production master is MySQL running on Hetzner and I want an RDS instance to closely follow it for backup purposes, ...
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Mysql Multi slave replication

Hi I have a master Mysql server from where i am replicating other 2 slaves. The issue is one of the slave stops with an error frequently. The error message is below. Error 'Duplicate entry ...
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Is there a log to see when a user is trying to access file/directory that he doesn't have permission?

My database is failing to replicate and the only clue in the error log is Operation Not Permitted, which I am guessing is file access permission failure either on donar or joiner. Is there any file ...
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mySQL: Slave not able to connect to Master for replication

On my master, I did: GRANT REPLICATION SLAVE ON *.* TO 'repluser'@'%' IDENTIFIED BY 'mypassword'; On my slave, I see: mysql> show slave status \G; *************************** 1. row ...
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MySQL won't start if I set the log_bin

[mysqld] datadir=/db_vol/datadir socket=/var/lib/mysql/mysql.sock port=3306 server_id=1 log-bin=/db_vol/log/mysql-bin.log binlog-do-db=mydb When I try to start MySQL, I get an error that says MySQL ...
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Single slave - multiple master MySQL replication

I need to replicate different MySQL databases from multiple servers into a single slave server. How can this be done? is there a way to define multiple master hosts?
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How to stream and record MySQL binlog remotely

For data redundancy goals, I want to record the binlog of a few hundred mysql servers in a central location. To run a full replicator for each stream would require lots of resources (multiple servers) ...
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syncing specific tables between two already-replicating MySQL clusters

I have a circularly replicating MySQL cluster, and a newer cluster of Percona XtraDB instances that we're in the process of moving to. During the move, we're running some projects on the old cluster ...
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Mysql Replication Not Working

I setup Mysql Master Slave Replication but on my slave server I am continously getting below error, I tried all possibles but no luck. FYI I am using Percona Mysql 5.0.92-50-log 130405 5:36:54 ...
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MySQL Slave Not Replicating

I had a deleted some data on the master mysql. Looking at the slave status, it shows this: mysql> show slave status \G; *************************** 1. row *************************** ...
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Which binlog format to use for MySQL Replication?

Just about to start using MySQL replication and I'm wondering what kind of binlog format is the best to use? There's Row, Statement and Mixed. I'm going to be using 5.1.49. Row is winning at the ...
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Moving MySQL Data from 1 RDS server to another

How do I go about moving certain data (returned by a simple query) from one database in AWS' RDS to another? An interruption of up to 20 mins is acceptable, although not preferred. My current plan ...
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Make heartbeat check MySQL replication lag before resource takeover

I am using heartbeat with MySQL master-master configuration, and using mon to check up on MySQL health. All works well for detecting downed host or broken MySQL. But the problems start after takeover, ...
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How can I estimate binlog size and whether binlogs should be on a separate disk?

We are about to setup MySQL Master-Slave replication on our production database. We intend to run backups from the slave (at the moment our master lags out for 15 mins every day whilst backups are ...
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PHP mysqlnd on Debian 6

I've installed php5-mysqlnd via: apt-get install php5-mysqlnd This is a brand new virgin Debian install with just apache2 and php5 via: apt-get install apache2 echo "deb ...