Questions tagged [replication]
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.
222
questions with no upvoted or accepted answers
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Copy nginx cache between two servers
I have a nginx caching server with at least 2tb of cache files at any moment, i need to migrate this server to another hosting provider but none of my clients can handle that traffic without cache.
...
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IIS Content and Configuration Sync
We have a Web Farm with IIS 7.5 that has a 3rd party application that syncs IIS Content and Configuration. We used this back in IIS 6 days, when there were no tools in the OS that handled this easily....
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604
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all dfs replication groups failing at the same time
We have 2 pairs of fileshare servers. All servers are virtual Windows 2008 R2. Each pair is replicating over a WAN. Occasionally all DFS replication groups fail at the same time.
I could not find any ...
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2
answers
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Large lag on mysql replication (Relay_Log_Pos and Exec_Master_Log_Pos does not increase)
Today my two slave's (one mysql 5.1 and second MariaDB 5.5, master is mysql 5.1) started lagging. Similar situation are quite often with lags rises to even 10000 seconds, because slaves have worse ...
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On-prem Hyper-V VM replicate to Azure
So I have a question. I'm used to replicating my VMs to azure using site recovery. Im now facing an issue with one of our clients having a very slow upload speed and needing to send the initial copy ...
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GPO says Version Mismatch on Domain Controller when Versions appear to Match
On my primary domain controller, the AD and Syslog version of each of my GPO policies appears to match correctly:
However, when I run a Group Policy Results report, it says that their is an "AD / ...
3
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880
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ZFS over LUKS over (NBD or NFS)? Need encrypted replication solution
I am using ZFS(ZoL) over LUKS on home and on remote server.
All is working perfectly and fast. I do snapshots by cron, but now I want to replicate them to some backup storage.
I have a small 2-HDD ...
3
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1
answer
1k
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remote Powershell script Scheduled task
I am having trouble running a Powershell script as a scheduled task. The script remotely logs into two Hyper-V hosts, queries the replication status and emails the result back to me.
The script works ...
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664
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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 ...
3
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0
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524
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Solution for file data backup, versioning and replication
We have a growing set of data files (.wav files, image files etc) which are data, i.e not part of the application code - uploaded and modified by users. The number of files is in the 1000s and the ...
3
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1
answer
2k
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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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1
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glusterfs mounts get unmounted when 1 of the 2 bricks goes offline
I have an odd case where 1 of the 2 replicated glusterfs bricks will go offline and take all of the client mounts down with it. As I understand it, this should not be happening. It should fail over ...
3
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1
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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 ...
2
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How to fix MARS (Multiversion Asynchronous Replicated Storage) timeout when viewing status?
I'm running MARS (Multiversion Asynchronous Replicated Storage) between 2 remote locations, and for the most part it is running acceptably for my needs.
As part of monitoring I periodically issue a ...
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DRBD - Protocol A slower than B and C
I have a simple, not quite so simple question: why the heck is protocol A slower than B and C in my setup? I mean, I've been stuck on this for over a week now, tried "all" the configurations, played ...
2
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426
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AD Replication error: lingering objects in DomainDnsZones
I manage a small environment (single forest, single domain) with only two Ws2008 R2 DCs. Recently I started having replicationg issues from DC01 to DC02 due to lingering objects in naming context DC=...
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1
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Hyper-V Replica from windows 2012 to windows 2008
My Customer has two hyper-v foc with san storage. one is built on windows 2008 datacenter and the new one is built on windows 2012 datacenter.
can I make a hyper-v replica from a windows 2012 hyper-v ...
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Dovecot dsync replication setup
I'm using dovecot with master/master replication using dsync, and I did the setup as described on
https://wiki.dovecot.org/Replication
What is total unclear to me, and I could not figure it out ...
2
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0
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2k
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Postgres-Repmgr node is marked as inactive after reboot
I'm using using a cluster with 2 psql servers. I'm using repmgr to manage replication and failover.
Replication works fine, and when my master fail, the standby takes the lead. My problem is when I ...
2
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0
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123
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Server 2012 replication error
I have 2 Windows 2012 DCs (DC1 and DC2).
From DC2 replication works while from DC1 I keep getting the error "replication error rpc server is unavailable. I'm attempting to do this from Active ...
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Postgres streaming replication over Internet
all:
I want to set up two PostgreSQL servers, one as master server and the other one as a hot standy, using streaming replication. I have done this before in LAN environments, but I would like to ...
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glusterfs unable to read gsyncd status file
Goal
I wanted to try glusterfs geo-replication in some virtualboxes on my computer for later use distributed on multiple sites.
Configuration
I installed glusterfs 3.6 on ubuntu 32bit servers like ...
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2
answers
2k
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Invalid method Parameter when calling DfsrConnectionInfo->ForceReplication() with WMIC
In our AD infrastructure the SYSVOL is replicated by DFSR. I want to force replication using WMI (ForceReplication method) via WMIC:
wmic /namespace:\\root\microsoftdfs path DfsrConnectionInfo call ...
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202
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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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744
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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 ...
2
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Does windows DFS (DFSR) resume a partial transfer if a WAN link is lost?
Q: Does windows DFS (DFSR) resume a partial transfer if a WAN link is lost?
This seems like an obvious "yes" but, hoping someone here can provide a definitive answer.
Background
The environment ...
2
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0
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3k
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MYSQL master master replication show master status show empty record
Environment: Windows 2008 R2, MySQL 5.051b
Two servers:
server1: 192.168.2.8
server2: 192.168.2.9
server1 > my.ini
[mysqld]
server-id = 1
auto-increment-increment = 2
auto-increment-offset = 1
log-...
2
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0
answers
1k
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Openldap Mirror Mode replication failover
We have currently one master ldap server and around 400 slave servers which are partially replicated through that master.All openldap versions are same and 2.4.31
What we want is actually if master ...
2
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0
answers
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AD Replication Errors / KCC - Between two Domain Controllers
I'm having quite an issue that began a few days ago. Let me just lay out exactly what happened - also I've inherited this environment, please keep that in mind.
1st Domain Controller - Windows ...
2
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1
answer
194
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Using TrueCrypt with File Replication on Windows Server
We have a few folders that are set to replicate to a DR file server off-site. One of these folders contains a file that is a TrueCrypt volume container.
When this file is mounted in TrueCrypt, the ...
2
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2
answers
246
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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 ...
2
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1
answer
156
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For a simple replication over 2 server computers, should I use glassfish replication or ubuntu replication, or something else?
I want to set up a simple replication or exact mirroring, using 2 server computers I just bought, for the following purpose:
I want to set up some websites, which, by design, may eventually need to ...
2
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1
answer
109
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What options for Windows Server 2008/SQL Server 2008 replication/mirroring across data centres?
Our Microsoft web-application processes around 2000 orders per day. I need to support failover to a secondary data centre.
What are the options and experience of implementing a replication/mirroring ...
2
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1
answer
202
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Replicate the same source folder to multiple end points, with a different schedule for each end point
I'm trying to make a set of folders (about 8 gig) that get updated monthly to replicate out to nine branch locations. They are connected via VPN back to head office with 1.5Mbit aDSL links.
I've got ...
2
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1
answer
112
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data replication from a production web server back to the staging web server
Have two web servers, development/staging and production. Code and some documentation is moved from the staging area to production either through on-demand jobs or nightly via a global replication ...
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0
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308
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Using MySQL/MariaDB replication, how to know when the Replica is in a consistent state?
This is a question about MariaDB (mostly) and a replication that I am considering.
For this replication, the Primary database is updated every minute by a process which can take about 15 seconds to ...
1
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1
answer
508
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Hyper V Dedicated Network Traffic for Hyper V Replication between two Hyper V Server
our scenario
The scenario is applied exactly with our planning setting, we need to configure Replica on our VM inside Hyper-V, the issue is how to configure or dedicate a specific network for a ...
1
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0
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612
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Postgresql - Master\Slave Async Replication - How to quickly fail back and forth?
I have two hosts set up as very simple master\slave. All servers connect to the floating IP 10.1.1.10.
Host A:
Designation: Master
Floating IP - 10.1.1.10
Standard IP - 10.1.1.11
relevant pg_hba....
1
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0
answers
77
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Allowing untrusted clients read-only replication of public data in a redis instance?
I've got a database of publicly auditable votes, updated in real time in a redis instance. Nothing else is in that redis instance. It has been separated from related data in a second redis instance. ...
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1
answer
2k
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Upon running repadmin /replsummary more than 15 servers are showing "8606" error
We are having an issue with Error ID "8606" ( Insufficient attributes were given to create an object. This object may not exist because it may have been deleted and already garbage collected)...
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1
answer
373
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Storage Virtualization/Replication for KVM Live Migration on 2 Nodes
at the moment I'm doing some researching on Virtualization on Linux.
My target scenarion would be a 2 Node "Cluster" with replicated storage over IP. (a little Like Windows HCI)
I already ...
1
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0
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VMware to Azure Site Recovery; disable replication failed:
I have a VM that I am replicating to Azure from a VMWare host. I needed to change the hard drive type to SSD Premium, and so started a disable replication, so that I could re-replicate. The disable ...
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0
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34
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MariaDB/MySQL DB tracking another database
If I want to have two servers with one active and one hot standby (and each has it's own database on them), how do I get the secondary to track the primary and be quick/easy to deploy if the main ...
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1
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1k
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Impossibile to replicate MongoDB
we are trying to move a MongoDB from an AWS VM to an on premise machine.
The MongoDB data directory size is over 2.5TB.
The idea is to put the on premise VM in replica with the AWS VM.
The problem is ...
1
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1
answer
696
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Backup & Restore OpenLDAP 2.4 with multi-master replication enabled
We have an openLDAP cluster running with two Master(producers) and one consumer. I read the below guides and got a good enough idea about using slapcat/ldapsearch with slapadd/ldapadd to backup & ...
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0
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202
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Proxmox: How to replicate runnable VMs
I am quite new to Proxmox 6.0 and just started to learn clustering.
I am running a test environment with an HP Proliant and an IBM rackserver (both have just one fat partition and the dataformat is ...
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0
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133
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Setup Local Persistent Volume on physical machines with Kubernetes
Let me make a statement first: I'm new to Kubernetes, please take it easy if I'm asking wrong questions.
Ok, here is what I'm gonna do. I'm planning to build a Kubernetes for my project using some ...
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441
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Converting a file server and Windows File Share to CIFS based share using Netapp Filer
My customer wants to decommission their old Windows Server 2008 file servers. The file shares contain lots of user home folders, group drive and data, application data etc.
I would like to implement ...
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0
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111
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SQL Merge Replication Triggers Missing
In MS SQL Server 2008R2 SP3 Standard, I'm seeing an issue where reinitializing a merge publication with a new snapshot deletes all of the merge triggers from all of the tables, and then when snapshot ...
1
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1
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Replicate On-Premises Hyper-V VM to Microsoft Azure (ASR)
Below is the diagram of my on-premises site connected to Azure site via S2S IPsec VPN.
On-premises and Azure Diagram
I got several questions and woul highly appreciate if someone could clarify them ...