Questions tagged [database-replication]

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Mysql Server, with Mariadb Slaves, disk usage high and many binlog files

I have a Mysql Master server and a few MariaDB slaves connected to it. I have an issue in that my disk usage on the slaves have gone a bit mad. My master server is 163GB with bin log files of 100Mb ...
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1answer
27 views

Can't restore master/slave replication from Percona backup (slave server)

A slave is restored from a master backup created with Percona xtrabackup On the master binlog is set to expire in 14 days and this backup is less than 24 hours old my.cnf (master) expire_logs_days = ...
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How does one go about using master to master replication along with something like rsync to keep two identical copies of an application identical?

I have servers that do things for me at home, for instance they keep copies of my bookmarks in the way that del.icio.us used to (nextCloud) and keep copies of my code (gitea). Initially I thought that ...
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1answer
1k views

How to change hot_standby_feedback parameter for an existing database replica in RDS

I have a primary database instance and its read replica, both running on Amazon RDS for PostgreSQL. Recently the replica started to get a lot of canceling statement due to conflict with recovery ...
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Transfer (replicating?) large tables from remote location

A provides generates periodically data tables in a remote location, that I should have transferred locally (via Internet) in order to trigger a subsequent local process. The problem we have is that ...
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1answer
148 views

Add 3rd server with pglogical replication to a 2 server cluster with stream sync replication and failsafe with patroni

I have 3 servers with Ubuntu 19.10, PostgreSQL 12.2 and Patroni 1.6.4 and I would like to have the following setup: I want to have two servers with synchronised replication and I want to add a 3rd ...
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1answer
39 views

Databases “Synchronized / In Recovery” after adding server to SQL Avaylability Group

I have an SQL AlwaysOn Availabilty Group configured with 2 nodes. The AG works without any problem with this 2 nodes and I can do a failover to/from any of them (this servers are on the same network). ...
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2answers
397 views

Automaticaly restoring SQL replication after power outage

I have two Sql databases, "MASTER" and "SLAVE", and I use Sql replication to get them synchronized. I'm using MariaDB 10 on both databases. The MASTER database is installed on a linux PLC using Docker....
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0answers
29 views

MS SQL 2008R2 Peer-to-Peer replication Zombie data

We have two SQL 2008R2 boxes - each in a geographically separate data center - that stay sync'd using peer to peer replication (with a pair of smaller boxes acting as replication providers). This ...
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1answer
47 views

MongoDB - Database Profiler does not capture queries sent to secondaries replicas

I'm new to MongoDB and need some help to understand how profiler works with replication in Mongo. I have a replica set with three instances and the secondaries are used for read only by the ...
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210 views

Master Master replication between RDS and database instance on EC2 Errno: 1032

I face this error many times with my replication Last_SQL_Error: Could not execute Delete_rows event on table db_name.event; Can't find record in 'event', Error_code: 1032; handler error ...
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1answer
653 views

Mysql Master-Slave replication database duplication issue

I have done master-slave replication for performing web-server mirroring. Web contents are getting replicated properly. But I am facing issue in database replication. Database is replicated and slave ...
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643 views

MongoDB secondary crashes on initial sync because of too many journal files on RAID 10

My secondary DB server went down, so I'm booting up a replacement secondary and trying to perform the initial sync. I've been following the tutorials and advice out there to use RAIS 10 on Amazon EBS ...
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1answer
268 views

how to initiate and maintain mongo shard replica set from mongos server? [closed]

I am trying to initiate a mongo shards replica set from mongos server, I want my mongos to maintain replica set and able to add new server to replication if needed.
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237 views

Moving entire database server to Galera cluster

We currently have more or less the following setup: Three individual MySQL database servers (individual Linux machines) with 15 to 50 logical databases and 20 to 50 GB of data Galera cluster (MariaDB)...
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2answers
510 views

SQL Server Failover strategies

In my infrastructure I have a SQL Server 2014 Standard standalone server. As databases and applications which are using SQL Server are growing up, I want to upgrade to SQL Server 2016 Standard and ...
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1answer
57 views

Local PC to Cloud - Network Connectivity Issue

What I'm trying to do: I trying to setup SQL Server log shipping between my desktop and Oracle Cloud. I have a developer edition of MSSQL installed in both my desktop and Oracle Cloud instance. ...
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2answers
991 views

Using Amazon EC2 for postgres_fdw or BDR replication

I've been tasked to do two proofs of concept with Postgres on Amazon RDS, one with postgres_fdw and another one with BDR (bi-directional replication extension). After many searches on the internet, it ...
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1answer
131 views

mysql replication fail (no error)

I'm doing a replication on a mysql 5.6 server (master) to a slave in mixed mode. The thing is, i connect to mysql trought workbench, i execute querys and are replicated. But if another user connected ...
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1answer
265 views

Is it possible to replicate _users in CouchDB with a non-admin user, but “users_db_public = true”?

Via a non-admin user, I am able to GET any user with users_db_public = true and public_fields set to something valid without authorization problems, as expected. However I am getting 401 (Unauthorized)...
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1answer
4k views

Database server vs NAS for data files

Regarding costs and maintenance speed/simplicity in case of hardwar failures, does it make any sense to keep SQL data files on a NAS server, separate from the SQL Server instance? Our app stores large ...
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1answer
172 views

Is it possible to do database replication on aws s3

I have 4TB database in company. As many different analytics require that full data the current database is not able to handle concurrent session from 100s of users. Is it possible to have databse ...
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229 views

SYNC MYSQL database instantly from one Digital ocean server to another

I have a site (data entry site ) on a Digital Ocean server and its database ( MYSQL ) is being updated with new records every second. I am hosting the public site on another Digital ocean server ...
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1answer
252 views

Error when I run “bucardo add database mybd”

This is the message error: install_driver(Pg) failed: Can't locate DBD/Pg.pm in @INC (@INC contains: /usr/local/lib/perl5 /usr/local/share/perl5 /usr/lib/perl5/vendor_perl /usr/share/perl5/...
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0answers
588 views

How to automate failover of master in PostgreSQL 9.5 on Windows?

I have 4 nodes (version - PostgreSQL 9.5 Beta) in a slot replication set up. Recently the master node, due to less disk space available, PostgreSQL started throwing errors and crashed in the end. As I ...
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1answer
3k views

Postgres 9.5 server not starting due to already active replication slot

I have a Postgres (version - 9.5 Beta) server replication set up where there are 3 slaves and a primary server. After all required configuration is done, I start 1st slave after taking base backup and ...
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1answer
4k views

Slot replication not working in Postgres 9.4

I am using Postgres 9.4 on Windows 2008 server. There are three such instances that I am using. One as master and the rest of the two are slave/standby. The version of Postgres is 9.4 in all the three ...
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1answer
73 views

How to handle replication post SQL Server 2000/2008 migration?

I have two servers; server A host SQL Server 2000 and server B ( a remote server) host SQL Server 2005. I replicate data between these two servers using transactional replication. I recently migrated (...
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2answers
9k views

repmgr - after a failover switch, both nodes act as a master

I have a two node PostgreSQL cluster configured through repmgr. The database topology looks like this: db1 - 10.10.10.50 ( master ) db2 - 10.10.10.60 ( standby ) wit - 10.10.10.70 ( witness ) The ...
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2answers
3k views

CouchDB replicate ALL databases?

I have a CouchDB I'd like to replicate to another server in order to do backup dumps without taxing the production server. The production CouchDB has a varying number of databases and I'd like to sync ...
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0answers
379 views

How can I efficiently create daily write replicas of an RDS instance?

We're looking to create a replica of a postgres RDS instance that our developers can write to (not just a simple read replica that AWS can easily provide). Currently we run a script nightly that ...
4
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1answer
6k views

Mongo secondaries stuck at startup state

I have a MongoDB replica set with secondaries that won't make it past the STARTUP state. The database is large but they should have moved to STARTUP2 by now. The correct ports are open as I can ...
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0answers
497 views

combine two mysql replication log files

So I use a master-master replication of a mysql database and load balance traffic between the two. This results in server A with a binlog of all it's transactions and Server B with a binlog of only ...
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2answers
2k views

Ubuntu 2 Node Cluster Postgresql 9.3 with pacemaker and Streaming Replication

I'm trying to setup a 2 Node Cluster with Postresql 9.3 and Streaming Replication. Streaming Replication is successfully configured. Master is listen up and is sending to slave. I can do failover ...
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1answer
2k views

Postgresql 9.3 Log Shipping on a Hot Standby

My setup I've just set up streaming replication in postgres for the first time (9.3.5), and while the streaming is working as I expect, I'm struggling to get my standby to run the archive_command so ...
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1answer
2k views

mongodb keep looping while trying to sync data

I'm converting my my standalone mongodb into a replica set. I've added one more member (and I want to add two more members later, and to shutdown the primary server). My primary mongodb is running 2....
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1answer
2k views

Communication errors while trying to replicate mongodb

I'm trying to replicate my mongodb database, I've crated 2 VM on my windows azure account. both of them are Ubuntu 14.04. I've opened 27017 port on both of them, and installed mongodb latest version. ...
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1answer
2k views

Multiple Postgres Servers (one writer, multiple reader) with Shared Disk

Here's the scenario: One shard disk (Gluster) Multiple Postgres servers Requirements: Use the shared disk to store the database files Use a configuration which provide maximum efficiency Findings ...
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1answer
723 views

Very strange disk-usage for replica in Mongodb

tl;dr: the new 2.6 replica eats up a lot more disk space than the 2.4 members. We're heavy users of MongoDB's GridFS. We're currently on 2.4, and are intending to upgrade to 2.6 by simply adding a ...
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1answer
403 views

Running a database heavy webapp in the UK and Aus server setup

I am running a webapp from a uk datacenter. Speed is fine as expected. The webapp relies heavily on a database. I would like to open the webapp to Australia and New Zealand but maintain good response ...
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2answers
8k views

Scheduled copy of production database into test database

My question is similar to this one. I've Two different severs (both SQL Server 2014 Std Edition). Production and Test. I want my test server to connect every night to the production server and copy/...
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1answer
595 views

PostgreSQL 9.1 on CentOS 6.5 - recovery.conf causing process exit with error code

I did setup streaming replication on the Ubuntu 12.04 LTS with rsyncing of the WAL files in case of failure. Now I was trying to do the same on the CentOS 6.5. To do this I've added official RPM from ...
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2answers
158 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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0answers
1k views

UDP Overflow / UDP Drops on Standby Postgres Service

I am stumped trying to prevent an overflowing UDP buffer on a standby Postgres service. Any help would be most appreciated. Essentially a UDP buffer associated with the pg_standby process on my ...
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0answers
1k views

SQL Server Replication - How to connect to a system via computer name rather than IP address in Amazon AWS?

In Amazon AWS, VPC, I am trying to setup replication in SQL Server, and have three servers setup with port 1433 RDP open (1 web, two SQL). I can RDC into each server. From the web server, I can ...
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0answers
1k views

CouchDB v1.2.0 - Timeout error on replication

Currently, I have a replication task that looks something like this: { "continuous": true, "create_target": true, "owner": "admin", "source": "https://remote/db/", "target": "db", "...
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1answer
3k views

If a SQL Server Replication Distributor and Subscriber are on the same server, should a PUSH or PULL subsciption be used?

Thanks in advance for any help. I'm setting up a new Microsoft SQL Server replication and I have the Distributor and Subscriber running on the same server. The Publisher is on a remote server (as it ...
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3answers
769 views

Replicating databases using Dell equallogic

Can the Dell Equallogic 6100/4100 replicate databases like mysql, MS SQL 2012, and Oracle 11g? I would like to set up my web applications and their databases in VMWare 5. They would run off the ...
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2answers
329 views

SQL 2012 Server Database Transaction Replication performance issue [duplicate]

We have configured SQL 2012 Server Database Transaction Replication for our client's .NET Web application to distribute SQL transaction and reporting on different SQL servers. We had implemented ...
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2answers
8k views

“Could not create IPv6 socket” postgresql standby error

I'm trying to create Postgresql 9.1 hot-standby using following steps: Configured 2 virtual linux machines. Master's ip: 10.10.10.1, Standby's ip: 10.10.10.2. Ping test passed. Restored the same db ...