Mysql 1 way replication master lost data replication still has
Had a master mysql on (windows) improper shutdown. Many records could not be recovered and investigation found slave had records master did not have. Did not restore over master - left as was. As if by...
View ArticleMySQL Circular Replication
I have this scenario where I have 4 MySQL servers (A,B,C,D), as this: Server (A) is always online, and serves as the main website. Servers (B,C and D) are online on random periods of the day, and not...
View ArticleSQL Server Log File Is Huge
Currently my db logs for my production SQL Server 2008 R2 server is growing out of control: DATA file: D:\Data...\MyDB.mdf = 278859 MB on disk LOG file: L:\Logs...\MyDB_1.ldf = 394542 MB on disk The...
View ArticleHow to share HAProxy configurations between two servers
I have a HAProxy servers that redirect my front IP server to multiple internal servers but my primary concern now is if the server containing HAProxy stops working. The simple way would be to setup the...
View ArticleReplication just failed with 'Error PROCEDURE mydb.SOMEPROC does not exist'...
My MySQL instance in a slave node (set up to sync with a master node via replication) is showing this error when queried via SHOW SLAVE STATUS\G: Error 1304: PROCEDURE mydb.SOMEPROC does not exist' on...
View ArticleMaster and Slave data desynchronizing on MySQL Replication
Versions: OS Debian, Master: MySQL 5.5.40-0, Production Slave: Mysql 5.5.40-0, Local Slave: 5.5.37-0 I have a MySQL Server with 2 slaves, one on the cloud and the other on a local machine. The local...
View ArticleMySQL 2 masters N-slaves replication
I'm trying to set up a two masters, N-slaves replication in MySQL I have setup two masters that works perfectly fine with each other. It breaks when I add a slave for master#1. Creating master#1 :...
View ArticleWill insert work if Live nodes are less than replication factor in Cassandra ?
i have 2 cassandra node i want to give replication factor of 2 . If one node is not up will it not insert ?
View ArticleSQL Server Transactional Replication compatiblity
We are currently planning to upgrade to SQL Server 2014 Current Scenario: Publisher - SQL Server 2008 R2 Distributor - SQL Server 2008 R2 Subscriber - SQL Server 2008 R2 Proposed scenario: Publisher -...
View ArticleReplication in R is not resampling
I am basically trying to create a 2 stage bootstrap where clusters are sampled first and then households within the clusters are sampled and calculations are one on the newly sampled dataset. I want to...
View ArticlePostgres 9.1 Master and Slave Replication Process [on hold]
I have a doubt in master and slave concept, I enabled master and slave process and its working automatically. And my issue is how to change slave to master process when master gets down. Is it possible...
View ArticlePostgresql failover scenario, recover only new data
Generally I work on Oracle databases, but for one of our projects I am expected to build Postgresql system with master slave replication. So far I have successfully built master slave replication and...
View ArticleFinding differences between a master and slave when pt-table-sync fails
I have a table that's showing some differences on a master and slave according to pt-table-checksum (PTC). I've found some verifying differences beyond that. Certain tables in the mix have composite...
View ArticleRelaying changes to a slave from another master with Tungsten on MySQL
I am trying to setup a multi-master type of replication with each master having an additional slave using Tungsten. As an example, lets say I have 4 hosts (A,B,C,D) and hosts A and C are the masters,...
View ArticleWhat are alternatives to Replication to distibute data (Microsoft SQL Server)
Is anyone knowledgeable of alternatives to SQL Server replication? I have a scenario where separate databases will share a lot of the same data which complex queries will match against. We want to...
View ArticleMongoDB to MySQL Replication Automatically
i have Mongodb server and mysql server. i want to use mongodb for "write" and mysql for "read". so i am looking for some tool or some process by which we can tranfer mongodb to mysql server on regular...
View ArticleDifference between row-based and statement-based replication in MySQL?
What is the actual difference between row-based and statement-based replication. I am actually looking in terms of replication's effect on the slave. If I am using row-based replication then what is...
View Articlept-heartbeat showing "Host is blocked because of many connection...
I'm running MySQL in a master-slave configuration. pt-heartbeat is showing "Host is blocked because of many connection errors"...but connections are well under limit (limit is 600 connections, MySQL...
View ArticleMySQL table replication on the same server
I have one the same server (Linux) two databases: db1 and db2 and I want to replicate db1.table1 to db2.table1 I added the following lines to my.cnf and restarted mysql service replicate-do-table =...
View ArticleSQL Replication: Which tables/views should be a part of replication?
We need a reporting Database & the Production Database. The reporting team is unsure of which tables in the database are used in the reporting tools and hence wants us to replicate the complete...
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