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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Rebuild mysql slave from scratch

I'm having a master/slave mysql setup. This night I had some problems with the master. I needed to recreate all databases again because they were corrupt. Now I stopped my mysql slave but want to ...
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3answers
119 views

How to proceed setting up a secondary mysql linux slave?

I have a mysql database master and slave in production. I want to setup additional mysql slave. There is around 15 Terabyte of data in the database and there are MYISAM and InnoDB tables in the ...
0
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4answers
691 views

Rebuilding corrupt slave by copying mysql folder

Rebuilding an existing slave from a master using cold-copying of /var/lib/mysql, would this be the proper process/order? Anything missing? master mysql> SHOW MASTER STATUS\G (take notes) slave ...
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0answers
14 views

RDS MySQL A B replicate across continents?

I have a web app that I run for Australian customers hosted on AWS using RDS. Can I bi-directional replicate in realtime the database to the USA and Europe AND expect to be able to have a single ...
5
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2answers
107 views

MySQL package upgrades (Debian apt-get) always break master-master replication due to changes in mysql schema

I have master-master replication set up on 2 Debian servers, and they replicate everything, including the mysql database itself (so that new users and such also replicate). This generally works very ...
4
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3answers
96 views

Replicating a linux web server

I'm planning on replicating a web server for high availability purposes. The server is running as a Ubuntu 15.04 virtual machine in Hyper-V and has MariaDB 10.0, Apache 2.4 and PHP-FPM 5.6 installed. ...
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1answer
44 views

MySQL replication ignoring BINLOG statements for certain table

I'm trying to make MySQL Replication work, but my slave is constantly stopping because of constraint fails. This errors occurs because the replication of one particular table is not working. If I ...
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2answers
993 views

PowerDNS Master Slave Transfer method

I would like to know which is the better option to transfer the domains & their updates between a master & slave PowerDNS server. I have seen many old posts from 2006 saying using the MySQL ...
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3answers
2k views

MariaDB Galera Cluster

I ma trying setup MariaDB in cluster but looks like I stuck on this error: #mysqld -u mysql 130407 21:36:24 InnoDB: The InnoDB memory heap is disabled 130407 21:36:24 InnoDB: Mutexes and rw_locks use ...
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1answer
44 views

Current setup maxing CPU. Need help designing AWS architecture and MySQL Clustering via AWS RDS instances

My company runs a mid-sized eCommerce (30,000-50,000 unique views monthly) shopping cart using X-Cart as a back-end. We are in the processing of redesigning and upgrading our back-end software. We are ...
4
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2answers
4k views

MySQL slave replication reset with no Master Downtime (using MyISAM)

Root of the issue: In all instructions for creating a slave on a running master requires flush tables with read lock. We use MyISAM, so we can't just use --single transaction to get consistent table ...
5
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1answer
654 views

Recovery strategy for Master-Master replication

I have implemented a HA solution for mysql based on master-master replication. There is a mechanism on the front end part which guarantees that only one db will be read/written to at a given time ...
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1answer
33 views

MariaDB Replication server disk usage drop

I have a MariaDB master-slave setup on 2 CentOS 7.0 servers. Today, I extended a LVM volume on the master server (because it was getting full). After extending the partition, I rebooted the server and ...
0
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1answer
47 views

RDS replication from a remote master outside of my VPC

I'm attempting to replicate from an external MySQL master to an RDS instance. I don't really want to be sending data in the clear over the Internet, so I have an EC2 instance that I have set up an ssh ...
0
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1answer
104 views

Seconds_behind_master value keeps on increasing in MySQL replication slave

We have a MySQL 5.0.77 Master-Slave replication. The replication was not properly running for the past few weeks and it was giving Duplicate entry error 1062. The Set Global Skip-counter option didn't ...
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2answers
1k views

ERROR 1130 (HY000): Host 'host' is not allowed to connect to this MySQL server, only on slave

So I have a master and a slave in a mysql cluster, the syntonization works as it should however I am not able to connect to the slave from any host except from the server it self. I have no problems ...
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1answer
38 views

Is it possible to safely edit mysql-bin.index file while mysql server is running

I changed location of mysql bin-log files. I copied them so mysql started fine, because they where in both locations, but then removed them from old location. I forget about correcting the path in ...
1
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1answer
54 views

MySQL - Unable to enable binary logging

I'm trying to enable binary logging so that I can set up master-slave replication between two servers. I'm working with an existing server with lots of data and I'm trying to dump the data with the ...
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2answers
49 views

MySQL slave attaches production database name to new views

I have a slave database that bears a different name than it's production counterpart. (We are using the replicate-rewrite-db option.) When I run a mysqldump from the slave (which I do for making dev ...
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0answers
69 views

Trying to replicate a MySQL 5.6 master, the replication server crashes

We run a MySQL 5.6 server that acts as a replication master. Recently, due to some other bug in upgrading from 5.5 the replication seems out of sync so we're trying to create a new replication on a ...
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1answer
87 views

MySQL 5.6 replicate live master WITHOUT down time

Following the steps to replicate an existing server, it seems most methods rely on the ability to either completely stop the master server or at least prevent it from writing using flush tables with ...
0
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2answers
225 views

Replication server crash - > 18:39:32 UTC - mysqld got signal 11

Below you can see the part of the log showing the crash. The replication server is 5.6 and the master 5.5 but this setup has worked with warnings for the last week or so. Now, after trying to change ...
0
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1answer
146 views

MySQL replication or MySQL cluster?

Currently i'm running Rails 3 web application with MySQL on one first server and Rails API application on second server that connects to the MySQL database from first server. I'm not happy that API ...
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2answers
58 views

mysql replication setup but not working

I'm experiencing some trouble setting up mysql replication between a master & a slave.. I did the setup successfully, but data doesn't update. Master : show master status; [File]: ...
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1answer
128 views

why is my mysql-proxy always doing selects on master?

My selects are always going to master and if i stop master I got some 'Cannot connect, all backends are down.' [read_query] 89.216.31.228:64166 current backend = 0 client default db = nivo client ...
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1answer
30 views

Force a connect to mysql

My Mysql server instance has crashed (I assume its been 10 hours and its not running) - I have tried show full processlist but the new connection can't connect. I've tried using mysqladmin and that ...
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0answers
121 views

Mysql table doesnt exist error after trying run from lvm snapshot

I'm trying to set up mysql replication by making lvm snapshot of master datadir and copying it to slave. The procedure is quite simple, on master server I execute "FLUSH TABLES WITH READ LOCK" and on ...
2
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1answer
3k views

MySQL replication error: Error_code: 1032

I setup MySQL read replica that is read only. Both master and slave are running MySQL 5.6. The slave never gets written to directly, but I can't seem to keep it synced for more than an hour or two. ...
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1answer
39 views

MySQL - data inside vm on shared storage? [closed]

I'm planning on moving all my VMs to shared storage, and I have a question about how to deal with a MySQL VM: Currently the size of the VM image is 100GB, where most of the space is taken up by the ...
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0answers
24 views

Amazon RDS MySQL Replication for Backup

I was thinking of setting up Amazon RDS for MySQL as a slave MySQL server for backing up MySQL databases from my dedicated server. The server will be programatically brought online for replication and ...
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1answer
50 views

MySQL Replication Logs Filling Partition

We have MySQL replication setup from site-to-site. The slave is just a backup used for reporting etc(No write). Everything is going well as far as I can tell. However, the server is quickly running ...
0
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1answer
51 views

Slave Failover to other Master in MySQL Master-Master-Slave Scenario

I have a Master-Master MySQL Setup (5.6) with an additional Slave attached to Master 1: Master 1 (alive) <---> Master 2 (alive) | Slave 1 Now when Master 1 dies, i want the Slave to ...
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1answer
64 views

MySQL backups/Replication using xtrabackup and Native Mysql Replication

This aspect of using Percona Xtrabackup over Native Replication has been in my head for sometime now and I just cant seem to find an answer to this, I am posting this as a last resort seeking advice ...
0
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1answer
130 views

Can I do zero downtime MySQL replication if I have archive tables present?

I've read the question and answers at How to setup MySQL replication with minimal downtime. It looks like I can get a slave DB into sync without down time if I am using only Innodb tables. My ...
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0answers
109 views

Why does freshly created MySQL slave keep throwing foreign key errors?

We are running Ubuntu-14.04 LTS with its stock mysql-5.5.40 and mysql-utilities-1.3.5 and we are setting up some master/slaves couples. Some of them get up without any issues just like usual, but some ...
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1answer
41 views

MySQL Replicator requirements

I have a simple MySQL Master-Slave replication setup, but always get an unaccaptable huge slave lag. That means that the slave lag will get higher than the expire_logs_days of 14 and the replication ...
0
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1answer
59 views

MySQL replication slave got 2147483647 (INT32_MAX) in a column for time stamp

I have set up two replication slaves, one on CentOS(x86_64 5.1.37), the other on Ubuntu LTS(x86_64 mysql 5.5.38). Both of them seem to replicate most of the Master db (CentOS i686, mysql 5.5.37) ...
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66 views

How to link my local MySQL DB to remote MySQL on the internet

Please I need some suggestions or advice on how to how to link my local MySQL DB to remote MySQL on the internet. I developed a Conference Management System for my client and they want us to setup 2 ...
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0answers
206 views

How to restore a corrupted MySQL master database from a slave database?

I recently discovered that the master db in a setup I'm running became corrupted. The slave was getting all of the data correctly so I have a solid backup. What I'd like to do is use replication to ...
0
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2answers
67 views

MySQLD is using 175% of the cpu

On one of the servers, I have mysqld running as slave DB. The CPU usage is 175% at the moment used by mysqld. Here are the results of SHOW PROCESSLIST; ...
0
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2answers
5k views

Slave SQL Thread not running

My replication suddenly went offline. SHOW SLAVE STATUS shows me that I/O Thread is running, while SQL thread is not. I have error message: Fatal error: Found table map event mapping table id 0 ...
6
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3answers
17k views

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 > ...
2
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1answer
103 views

MySQL replication slowing master

We are currently running MySQL 5.1 Quick Overview We use 5 web servers ( Apache ) all connected to 1 DB server ( MySQL ) hosted on the cloud. The DB server running on the cloud ( Master ) ...
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9answers
64k views

How can I export the privileges from MySQL and then import to a new server?

I know how to export/import the databases using mysqldump & that's fine but how do I get the privileges into the new server. For extra points, there are a couple of existing databases on the new ...
0
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0answers
93 views

How to fix MySQL replication on one table

I have a rather large MySQL database with a handful of replicating slaves. Recently I ran the percona toolkit checksum and found a couple of tables out of sync. What is the best way to get them back ...
0
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1answer
247 views

MySQL Master-Master Replication Issue

I have two databases that sync data through Master-Master replication. The setup was created using the following guide: ...
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1answer
85 views

Unable to start MySQL server while configuring MySQL Cluster using its auto installer GUI?

We are trying to configure MySQL Cluster using its Auto Installer GUI. When we click on 'Deploy and Start MySQL Cluster' button, it showing a small popup with progress. Once it is reached at 57%, ...
0
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0answers
39 views

MySQL Cluster replication: NDB$MAX_DELETE_WIN() changes always applied in primary

I am building TWO mysql clusters (A & B) with master-master replication: A --> B --> A I followed the official MySQL doc to setup conflict resolution. Eventually we may have more than 2 ...
2
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1answer
331 views

High Mysql Connections

Having a challenge discovering why results are as they are. Perhaps missing something obvious. Sorry this isn't very specific. But if anyone has an pointers on areas to focus on that would be very ...
0
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1answer
50 views

Mysql database restore

My mysql backup is running everyday at 4 am & accidently my database got corrupted at 7am. Now how to restore data updated between time period of 4am & 7am