Replication is the process of sharing information so as to ensure consistency between redundant resources, such as software or hardware components, to improve reliability, fault-tolerance, or accessibility.

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Build a IIS and SQL Server replicated cluster [on hold]

I have four Microsoft Windows Server 2012 R2 Standard virtual machines on three physical nodes. Two will be dedicated for IIS, and two for SQL Server 2014 Standard. I have to replicate them (IIS1 to ...
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3answers
747 views

Best Solution for Load Balancing geographically distributed NFS File Access? [on hold]

I'm trying to find an optimum solution for accessing the NFS file share in my company. We have a central file server in North America and has 30GB~50GB of updated data everyday. And it's very slow for ...
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1answer
1k views

SQL Server replication pending transactions

I'm having a problem with a transactional replication. I have the publisher in my server and there is a subscriber in another server. In my server, if I go to the details of the subscription I can ...
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1answer
1k views

Can't setup 3 nodes MongoDB recplica set

I just follow instructions in MongoDB document Replica Sets - Basics to setup a 3-node Replica set. Everything goes fine when I do the initiate and add first node in the primary. [foo@host-a ...
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2answers
177 views

System Requirements of a write-heavy applications serving hundreds of requests per second

NOTE: I am a self-taught PHP developer who has little to none experience managing web and database servers. I am about to write a web-based attendance system for a very large userbase. I expect ...
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11 views

hyper v replication destination on

I want to test out 2012R2's Hyper V replication feature but I don't want to have to fork out for a new dedicated Hyper V host until I'm sure that the built in replication is fit for my needs. We have ...
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1answer
19 views

Trying Non-Authoritative restore but CN=DFSR-LocalSettings is missing

I have a single Domain with one Windows 2011 SBS Domain Controller and a newly joined and DC promoted Windows Server 2012 Standard. Forest and Domain functional levels are both Windows Server 2003. ...
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1answer
114 views

OpenLDAP syncrepl probblem with password policies

Recently I have been working to get slapd syncrepl working using an LDAP backend (push based replication). While I have had fantastic results with syncrepl doing pull based, the push based is killing ...
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3answers
2k views

Logon Failure: the target account name is incorrect after making a ghost image of a server

I recently replaced a failing SCSI drive in a Windows 2000 server with an IDE drive. I made an image of the SCSI drive and Ghosted it. The purpose of the machine was to give out DHCP at one location ...
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1answer
5k views

How do I fix issue causing “incomplete startup packet” log message trying to implement replication in Postgresql?

I've got two cloud servers running Ubuntu 13.04 and PostgreSQL 9.2. I've primarily used this blog post to aid me in setting things up. However, to do the initial database dump to the slave I'm using ...
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992 views

The Destination Server is Currently Rejecting replication Request - Error Event ID1864. Warning ID 2092

hope some one can help me with the subject mentioned error. My current set is that I have physical Win2k8R2 Box and a Virtual server with the same configuration. recently I am having replication ...
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0answers
58 views

Hyper-V Replica Capacity Planner stuck getting VM information

I'm trying to use the Capacity Planner for Hyper-V Replica tool to estimate requirements for a replica site. It keeps getting stuck "Getting the VM and VHD from primary site, this can take upto ...
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1answer
2k views

Ubuntu 12.04 glusterfs volume failed to mount at boot time

I have just setup 7 KVM guests, all running Ubuntu 12.04 LTS 64bit Minimal server to test out glusterfs 3.2.5 from the Ubuntu official repo. Two of them form a mirrored pair (i.e. replica 2), and five ...
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0answers
32 views

Why does Hyper V differs in authentication methods for live-migration and replication

Hyper-V provides different authentication methods for replication and live migration (2012 R2 based). Live Migration is using CredSSP and Kerberos and replication Kerberos or PKI-based authentication. ...
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14 views

Replica for the free/busy folder is missing - Event 14029

Recently, we migrated an Exchange 2003 server to Exchange 2010. Everything is working fine, except that Event 14029 is logged very often. Event ID 14029: Couldn't find an Exchange 2010 or later ...
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3answers
7k views

MySQL simple replication problem: 'show master status' produces 'Empty set'?

I've been setting up MySQL master replication (on Debian 6.0.1) following these instructions faithfully: http://www.neocodesoftware.com/replication/ I've got as far as: mysql > show master ...
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1answer
42 views

MySQL replication shuts down after rotate of binlog

I have following issue. I had successfull setup of master-replica(row-based). It has been running for 2-3 hours. After bin-log was rotated -> mysql-bin.index file got corrupted on master. Here is ...
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5answers
2k views

SQL Server 2008 R2 transactional replication over VPN

I'm having difficulty setting up replication over a VPN. I have a SQL Server 2008 R2, Enterprise Edition database on a Windows 2008 R2 Server. SQL Server is running on a non-standard port. I have ...
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1answer
76 views

Read Only Domain Controller not replicating after writable domain controller outage

I have a RO domain controller that replicates with a writable DC which is at another site. The other week the writable DC was out for about 2 days because of maintenance at that site. After this ...
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1answer
69 views

Amazon RDS replication with external slave

I've recently configured a replication with an external MySQL master and RDS as slave but now I need to reverse that config and use RDS as master and the other instance as slave. Actually I use a vpn ...
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1answer
79 views

GlusterFS replication between DCs without unnecessary overhead?

For testing purpose, I installed four GlusterFS nodes and created a replicated volume with a replicate count of 4. Two Gluster nodes reside in DC A, while the other Gluster nodes reside in DC B. Now ...
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32 views

Removing a replication group

I am trying to un-install DFS on Windows Server 2012, that way I can try to re-install it as my servers won't talk to each other when attempting to replicate. I keep getting an error message that says ...
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1answer
252 views

DFSr detected that a file was changed on multiple servers, but “winning” file and that moved to conflicts folder have same hash

We've just deployed a new DFS replication system between two Windows 2012 R2 servers. We cloned the DFSr database using MS's recommendations ...
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28 views

Add security/authentication to mongodb (2.6) without downtime?

We have a 3 node replica set (running 2.6.1) that's running mostly defaults. We'd like to add authentication, but do it without downtime. I'm fine with restarting the nodes one-by-one and even ...
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24 views

SQL 2008 over the internet replication

Please excuse me for the (probably) stupid question, but SQL Server is not my main proficiency here... I have 2 SQL Server 2008 R2 servers, one in an AzureVM and another one in my local datacenter. ...
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1answer
66 views

Mysql - best setup for 4 replication databases and another standalone

we would like to merge on one server 2 mysql instances coming from 2 different server : 4 databases on the first instance, which is a replication slave, which are replicated from a master 1 database ...
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3answers
2k views

Subversion cluster / replication / HA

What's a good way of making SVN highly available? We take backups of our Subversion server, but this is not enough, as svn is very important. We would like to implement some HA mechanmism for ...
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49 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
30 views

Missing DomainControllers in Active Directory Object

We are setting up a new network environment that will have two domain controllers and ran into an issue with Windows not recognizing the existing domain controllers (DC-01 and DC-02) as Domain ...
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3answers
2k views

SYSVOL replication over DFS-R

When we migrate our production DCs to Server 2008 I would also like to move away from FSR to DFS-R for SYSVOL replication. My problem is that I setup a quick lab to test it out but it's not going as ...
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2answers
325 views

SQL 2005 replication not working

I am in the process of creating replication between 2 remote servers, server 1 is the distributor and publisher and server 2 is the subscription Server 1 windows 2003 server 192.168.10.1 connected ...
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0answers
74 views

LDAP Replica with TLS

I'm having trouble to run the replica LDAP with TLS, without TLS, all works !! Provider and Consumer are identical CentOS release 6.5 rpm -qa | grep ldap openldap-clients-2.4.23-34.el6_5.1.x86_64 ...
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1answer
76 views

My Active Directory replication settings don't look right

I have recently added a new site to my Active Directory domain (single forest, single domain). I have mapped subnets to the sites, and added one DC to the new site with our remaining 4 on the original ...
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1answer
48 views

Replication Issues in Active Directory - Computer Objects showing up in multiple OUs

There seems to be replication issues in the domain , but there is a strange occurrence. Some computer objects are moved to a different OU ; after a day when i searched for those computer objects in ...
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0answers
48 views

MSSQL Server 2008R2 Replication stall, no latency, no errors, missing data on subscriber

This morning after performing a routine database deployment of two new tables I noticed that transactional replication had stopped for more than 3 hours. When replication resumed it picked up 3+ hours ...
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37 views

sql web replication ?diag errors

Trying to configure web replication, and running into a number of issues. When running replisapi.dll?Diag, I receive the following errors: CLSID_SQLReplErrors FAILED 0x80040154 replrec.dll classes ...
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3answers
1k views

MySQL per-database replication?

So, my problem is interesting: we want to migrate from one server to another. We made a master-slave replication, but my boss came with the idea to make migration one database at a time. So he asked ...
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1answer
2k views

How to setup replication between my two ISPConfig3 servers

I'm follow the excellent tuto ISPconfig3 web server on Debian 6 and I try to run it on a replication server. My purpose is to make a rescue server who, when my master server down, take over. ...
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0answers
60 views

Dovecot Replication(between CentOS vms) not working

I have the following configuration: 2 Virtual Machines(set up using Vagrant) with CentOS 7( master_1 - 127.0.0.1:2222 and master 2 - 127.0.0.1:2200). Each has installed postfix + dovecot 2.2.10. My ...
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0answers
120 views

Hyper-V Replication of VMs with Symantec Endpoint Protection Manager and Symantec Mail Security

I'm hoping for some advice on replicating Hyper-V VMs which are running Symantec Endpoint Protection Manager (SEPM) and Symantec Mail Security for Microsoft Exchange (SMSMSE). The problem is the large ...
2
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1answer
124 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 ...
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1answer
78 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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2answers
155 views

How to clone a linux live server with no stopping it?

This is my current situation:+ A linux server containing several web applications that cannot be stopped, with no physical access to it, only via ssh. This is what I need: I need to replicate it to a ...
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1answer
60 views

how to use mysql database replication to backup a single database

Suppose I want to replicate a single database in mysql on my slave, the master might be creating and writing to multiple databases. is this possoible? or does the replication slave have to replicate ...
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1answer
62 views

MySQL : How to lock all write in all databases? [closed]

I need to block all writes (insert , update, delete) on all databases. How can I do that ? Put all database in Read Only for a period time.
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2answers
749 views

MySQL: Replicating the MySQL database

I have a primary write server (server1) which replications to two servers (server2 and server3) which are query servers. I am replicating all databases to these servers including the MySQL database. ...
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0answers
64 views

Why is MSSQL 2008 saying @filter_clause is invalid and that articles do not exist when creating a new publication from a script?

I have a snapshot publication on a test server with a pull subscription set up on another test server (both SQL Server 2008 R2). This publication takes a snapshot of a few columns in a few tables for ...
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1answer
40 views

Can bad DNS replication cause a user to loose connectivity to a shared drive [closed]

We have multiple users that loose connections to shared drives on a particular server. I am able to ping the server hosting the files but can not see the host, or directories. Also its not 1 user, its ...
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0answers
87 views

Replicated MongoDB server slower than simple shards

I tried to compare the performance of a sharded configuration against a sharded and replicated configuration. The sharded configuration consists of 8 shards each running on three different machines ...
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1answer
266 views

DFS Replication Manager on Failover Cluster Nodes

I currently have a VM architecture setup for high availability / manageability. The one point of failure is that I have a single windows 2008 machine that runs DFS replication across the servers in my ...