MySQL failover - Master to Master Replication
My company is trying to implement a MySQL failover mechanism, to achieve higher availability in our webservices tier - we commercialize a SaaS solution. To that end we have some low-end VMs scattered...
View Articlemongodb replication node stuck at “STARTUP2” with optimeDate as 1970
i have just setup replica sets with three nodes . the third node is stuck at stateStr STARTUP2 with "optimeDate" : ISODate("1970-01-01T00:00:00Z"). However its showing no error message. Is this...
View ArticleMySQL Replication: Waiting to reconnect after a failed registration on master
I have two MySQL servers in a master-master setup. The setup is exactly the same (following the process I wrote last time) but is not working as expected. I am receiving the messages: Slave_IO_State:...
View ArticleIssue With Web Synchronization & Merge Replication Microsoft SQL Server /...
I am extending our network by placing a xenserver box at a remote location to reduce outages for our web resources. All our servers are on xenserver, with MS Server 2008r2 and SQL Server 10. I must add...
View ArticleMongodb, all replSet stuck at Startup2
I have mongodb replication set with 2 node(node0, node1), one day one of it(node1) crash. considering deleting all data of node1 and restart it will take a long time, I shutdown node0 and rsync data to...
View Articlepgpool2 not working on my Ubuntu i686 athlon i386 GNU/Linux
I am trying to implement replication and load balancing on my Ubuntu i686 athlon i386 GNU/Linux.for creating database clustures I have installed postgresql contrib 9.1.11 having initially database...
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Cannot start SQL Server replication as already running
I'm trying to configure a sql replication on the sql server 2012 . I am logged in as "sa", when I attempt to start replication i get the following error : How can I stop this job and restart the...
View ArticleMySQL 5.6 replication causes 'waiting for table lock'
All of the sudden queries on slave server stopped with status "Waiting for table level lock" I restart mysql service and stop replications and locking does not show up anymore. Once I turn replications...
View ArticleSQL Server 2008R2 - how to install replication components
I am trying to install the Replication components for SQL Server 2008R2, on technet website it says: On the computer that is running IIS, insert the SQL Server 2008 R2, SQL Server 2008, or SQL Server...
View ArticleHow to disable redis replication in cluster
I have my Redis cluster set up successfully. However, it seems like one or more of my slaves are always syncing from their respective master. I am always getting "LOADING Redis is loading the dataset...
View ArticleWhat happens to read/write operations during automatic client failover in...
We have setup a 3 node replication set configuration for MongoDB. I want to know what happens to read/write operations during primary switchover. To be more explicit, few read/write operations were...
View Articleis there a tool for MSSQL to MongoDb replication? [on hold]
I need to replicate my database to certain collection in mongodb database
View Articlepostgresql bucardo master-slave replication
I've got a postgresql (9.3.5) db that I'd like to replicate. The db consists of several tables, most of which have a primary key and a few dont. Im using bucardo 5.4.0 and so far I have done this...
View ArticleMongo replicated shard member not able to recover, stuck in STARTUP2 mode
I have following setup for a sharded replica set in Amazon VPC: mongo1: 8G RAM Duo core (Primary) mongo2: 8G RAM Duo core (Secondary) mongo3: 4G RAM (Arbiter) Mongo1 is the primary member in the...
View ArticleSQL Server replication service in Amazon RDS
I have a local infrastructure with multiple SQL Servers. Some of the servers have replications services to copy some data to a master database. Is it possible to have the replication services to work...
View Article"Oneway" Replication from Oracle DB to TimesTen
currently I'm really stuck into a problem and I not able to finde a nice way to realize that. I need a suggestion to replicate from oracle db (some tables) to a TimesTen. A connection is only possible...
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Solr slave replication is not well after replication
I set to the Master/Slave configuration in Solr and try to replication on slave sever "Solr Management screen" by pushing "Replication Now" button. But I push "Replication Now" button again to again ,...
View Articlemysql GTID replication
i try to use GTID and backdump mysql -u root -h xx.xxx.xxx.xx -p < 2015-10-30_all_database.sql Enter password: ERROR 1840 (HY000) at line 24: @@GLOBAL.GTID_PURGED can only be set when...
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MongoDB replica set: members with different versions of mongod
The primary is running mongod 3.0.6 and the secondaries running mongod 3.0.7 is a mixing of versions allowed in the same replica set? For upgrade it's best practise to not all nodes the same time.
View ArticleMongodb slave shut down
i started a mongodb master slave but due to technical issues the slave server crashed. I restarted it and the mongod proccess as well with the host parameter, but for some reason the slave isnt...
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