Tagged Questions

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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6 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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12 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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0answers
16 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
28 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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0answers
26 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
47 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
21 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
15 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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13 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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1answer
27 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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0answers
18 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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1answer
60 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
41 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
35 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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2answers
105 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
47 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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38 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
36 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
58 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
27 views

Hw much gets stored for each GB after replication and backups [closed]

Does Google Drive, Dropbox, or other file storage services generally use Backups or do they rely solely on replication? How many copies do they replicate?
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1answer
90 views

GlusterFS - Replication Over Odd Numbers Of Nodes

I tried to create a replicated volume across my 3-node cluster with the following command: sudo gluster volume create \ replicatedStorage \ replica 2 \ transport tcp \ gluster1.mydomain.com:/data \ ...
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0answers
17 views

PostgreSQL replicate data have different time

I'm notice that when I replicate data between 2 server with different time zone, the time data in PostgreSQL is shifted when I load it to a client (in my case, a Rails console). I thought all ...
0
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1answer
26 views

How to recover a degraded MongoDB sharded cluster?

I've had problems with a MongoDB replica set of my sharded cluster. The current status of the nodes is: node1: primary (but apparently vetoed by node3 that needs to sync) node2: rollback (it was the ...
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0answers
76 views

MySQL replication across availability zones in AWS resulting in lag

I have 3 EC2 instances, each running MySQL. 2 are slaves replicating from the master. The master is located in the availability zone eu-west-1b. One of the slaves is in the same zone, and the other ...
0
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0answers
472 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
30 views

Bucardo status does not feel if the slave is down

I am using bucardo as third party to postgresql replication between two sites. everything ok except buacrdo status <sync_name>. I have a Master-slave sync on master server. when I poweroff the ...
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0answers
24 views

SQL Server 2000: Monitor replication

starting with (Microsoft) SQL Server 2005, there are stored procedures available to monitor replication (http://www.g-productions.nl/index.php?name=sp_replmonitorhelppublication) But as we are a bit ...
1
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1answer
64 views

Do both Active Directory servers need to see each other for replication?

I'm trying to set up a remote DC for DR, and I've chosen to put it in AWS in a VPC with our other servers being backed up. I can restrict that with security groups to only accept traffic from the main ...
1
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1answer
102 views

SAN Synchronous Replication and SQL Server - Is RPO of 0 possible?

I am working on a solution that is using SQL Server 2012 SP2, but without the use of AlwaysOn availability groups. This is due to cross-database transactions, that does not work for this scenario. ...
0
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1answer
53 views

MySql Replication Stored to Central Database

Hi I maybe looking with the wrong terminology. But i have a situation where i need to replicate / copy data to a centralized database. Shop1.dbshop - > Central.dbshop1 Shop2.dbshop - > ...
2
votes
1answer
49 views

New NTDS connections on a site: Need order of operations for local and remote sites

I have two AD sites: Hub and Spoke. ISTG is turned off for both of them, and a new DC is being placed in to the site with no ISTG enabled. What is the correct order of operations to set up manual ...
3
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2answers
108 views

what distributed file system for a two-node failover setup?

I'm trying to set up a redundant setup consisting of two servers that have everything redundant: the database (MySQL master-master in active/passive mode) the file system (distributed/replicated) ...
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0answers
58 views

What database am I seeding from in a stretched DAG?

I have a stretched DAG across 2 sites, with 4 copies. One of the remote copies failed, and I issued a re-seed operation with the remote&working copy as a source. Knowing this, I tried to work ...
1
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1answer
29 views

Factors and approaches for migrating AD across disconnected Data Centres?

I need to specify an approach for migrating a Windows 2008 Active Directory environment to a new data centre. There is not currently connectivity between the two data centres though that could be an ...
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1answer
81 views

What's the best way to sync folders across 03 or more webservers? [closed]

I have 03 servers and I want to sync some folders across them. I'm using DRBD + OCFS2 for a year or so, but it doesn't support more than 02 servers right now. I read about GlusterFS and CEPH, but ...
1
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0answers
23 views

Does having an extreamly high number replication partners in Active Directory pose an issue in 2014?

I'm consulting a network where they have 5 domain controllers in central location and a lot of Read Only controllers in additional locations. SCOM is shouting that there are extremely high number ...
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0answers
86 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 ...
1
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1answer
65 views

Do I need to run db.repairDatabase() on every mongod?

I'm handling a MongoDB (2.4.10) sharded cluster that has only 1 replica set till now. I ran db.repairDatabase() on a mongos. With that, I could reclaim free space on the primary node. But not on the ...
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0answers
97 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 ...
1
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1answer
710 views

How can I set up an Amazon RDS for PostgreSQL database to act as a replica to a non-RDS PostgreSQL database?

I'm trying to set up an PostgreSQL database on Amazon RDS as a replica to another PostgreSQL database that lives on a regular server. Most of the instructions I've found online require shell access so ...
2
votes
1answer
52 views

Testing for Active Directory Schema modification (not upgrade)

I am trying to test a schema modification. That is i need to add one of the attributes to global catalog by modifying schema , initially in a lab which is exact replica.My questions are below; -> ...
1
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1answer
63 views

Replicate data across loadbalanced apache nodes

I am using haproxy that is pointing on 5 apache nodes, the problem is that I want to replicate apache data between those nodes. I have installed DRBD and it worked but on 2 nodes only The rsync is not ...
2
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1answer
133 views

DFS-R broken after renamed upgraded member server

I had an existing 2-way DFS-R replication topology set up, consisting of two servers, one was Windows 2003 R2 and the other Windows 2008 R2. This was working fine. Last week I upgraded the Win 2003 ...
0
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1answer
96 views

How to replicate web site files to web servers over WAN for LB sites?

I am working on a new setup for a a handful of websites of mine. My side business is growing (web hosting and light webdev) and I am working on a new infrastructure design using commodity hardware ...
2
votes
1answer
74 views

Exchange Local Continuous Replication - Seeding Fails

When setting up Local Continous Replication on an Exchange 2007 server's larger database, the wizard consistently fails with a message along the lines of: The log file xxxx for SERVERNAME\Your ...
3
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1answer
57 views

What type of AD replication is needed for a non-mesh Hub and Spoke network?

I'm having AD replication issues (OUs not replicating, FRS, etc) and suspect the issue is that the network admins have modified AD Sites And Services in ways that disabled the ISTG and other aspects. ...
0
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0answers
153 views

mongodb replication with admin authentication

I have three nodes of mongodb replication set 2 servers have the data and the third is an arbiter 54.83.20.44 : 27017 (primary) 54.197.243.55 : 40000 (secondary) 23.21.148.73 : ...
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0answers
53 views

What can be done to prevent “failed to flush master info” in MySQL replication?

I have two MySQL 5.1 servers setup with master/slave replication. I was previously using 5.1.41 for several years without issue. However, since I've upgraded to 5.1.72 (and did some other tweaks ...
1
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1answer
128 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 ...
0
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1answer
73 views

Using Replication for Migration on MongoDB

I'm interesting in using replica set feature on Mongo as a method for smoothly migrating between machines. My Mongo database is currently a standalone instance. I realize the recommended practice is ...