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.

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Replicate In cloud Azure VMs to my on-premises VMware site [closed]

I need a solution to replicate VMs created on azure then offboarding these VMs from cloud Azure site recovery reprotect only the VMs that replicated from on-prem not for the VMs that created on ...
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35 views

How to move ADUser to child domain while preserving original Object for password replication purposes

So, we have one forest with one domain currently, which is working pretty good. Now we got a new remote office for 5 users. They should get their own Domain Controller and Domain. Our original Domain ...
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What would be considered a **high** redo rate for an Oracle Database in logical standby configuration as compared to physical standby configurations

Considering that our 11.2.0.3 Oracle Database Active Data Guard Configuration (in Maximum Availability mode) is able to keep up with a certain amount of redo without any lag. ( 5MB/s for instance ). I ...
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“ldap_modify: Server is unwilling to perform (53) additional info: shadow context; no update referral” ERROR in my ldap server

Iam trying to do multi master replication on my LDAP server on RHEL 7 but I am getting below error while running command: #ldapmodify -Y EXTERNAL -H ldapi:/// -f ldap01.ldif "ldap_modify: Server is ...
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Sybase - SAP ASE - replication server: routing declaration

I'm trying to declare a routing in SAP Replication Server. I have: A server (let's call it S1) with ASE and RS server (let's call it RS1). A server (let's call it S2) with ASE and RS server (let's ...
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SQL Server 2014 not replicating NEW non-clustered indexes

I have an instance of SQL Server 2014 running replication. I have selected the option to copy nonclustered indexes on all tables: When this was first enabled, all existing nonclustered indexes were ...
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Is it possible that the old primary follow the new secondary?

I need to change the roles between two nodes. Circumstance: 2servers: primary: psql01 and standby: psql02 After psql01 stops, psql02 becomes the new primary. After a while, start psql01 On ...
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97 views

AWS RDS Postgres cross-account replication

Is it possible to set up cross-account replication with the AWS RDS Postgres database? The goal is to have a read-only replica in a separate AWS account. I know it's somewhat possible to accomplish ...
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65 views

How to migrate a mysql master/master replication system to a new system

I am using a system with two machines running mysql in master/master replication. I would like to move the systems to new machines who are also doing master/master replication. Is it possible to do ...
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98 views

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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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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Hyper-V merge checkpoint causes disk inaccessibility

We currently have 2 Hyper-V host (Windows Server 2016). One of them contains all of the running machines, while the other contains the same machines, but as powered off replicas. To keep them in ...
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Unable to create cluster with repmgr for postgrSQL

I follow this guide to setup. https://medium.com/@victor.boissiere/how-to-setup-postgresql-cluster-with-repmgr-febc2f10c243 Everythings going fine but when come to here sudo -i -u repmgr rm -rf /...
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39 views

Clean DB from Slony objects

I have old DB server Postgres 8.4 and Slony (slave, to which only a table replicates) I'm trying to migrate to new server with Postgres 9.x without slony and slony deamon, I would later setup other ...
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125 views

How to create a database read replica on AWS Lightsail

I have an existing MySQL database running on AWS Lightsail, I want to create a read replica for that one, how can I do it?
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116 views

How to replace ZFS pool root with a snapshot after replication

I'm replacing some failing disks with new ones, and rather than replace them one by one I have created a new ZFS pool on the new disks, and copied the old pool over to the new one. I did this at the ...
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25 views

AD replication stops

i have a domain controller located in a distance site which has a replication problem. Replication stops after a small period of time (about half an hour). The only way to resolve it is to change the ...
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Replication from Clients to Hyperv cluster offsite

I want to replicate virtual machines that are at client sites to our cluster. Our cluster is 3 hyper-v's clustered together with san as storage. The cluster is in the domain. The replica broker is ...
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OPENLDAP Master/Slave replication stopped

I configured my system in this way: Master OpenLDAP 10.100.1.6 and slave OpenLDAP 10.100.1.7 I used this guide: https://www.itzgeek.com/how-tos/linux/configure-openldap-master-slave-replication.html ...
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GlusterFS multiple bricks replicating on single node

The situation at hand is I have a 4x2tb raid (1 brick), which i'm going to backup to a external usb enclosure (1 brick). I am hoping that GlusterFS will allow me to replicate the main brick on my raid ...
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35 views

Will Mariadb replication master-slave setup work for Joomla/Virtuemart?

I have a Joomla/Virtuemart installation and i want to create a master-slave replication with 1 slave The Slave will be used as a failover in case there is something wrong with the master. The ...
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907 views

AD replication: The target principal name is incorrect. 2146893022

I have three domain controlers, and repadmin /showrepl command outputs the following: C:\Windows\system32>repadmin /showrepl Repadmin: running command /showrepl against full DC localhost Default-...
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78 views

Replication from one Gerrit to another

I want to replicate one project/repository from one Gerrit to another Gerrit. My replication config: [remote "gerrit3"] url = 192.168.1.106:29418/${name} adminUrl = gerrit+ssh://192.168.1.106/ ...
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74 views

DNS Replication & Forwarders

I don't even know how to begin asking this question, but hopefully someone will understand as I'm a noob when it comes to DNS especially. Basically I'm sitting with a Windows 2008 R2 dc with AD,DNS. ...
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462 views

What could be causing the Google Cloud SQL MySQL replica instances to be stuck on a “System lock” state, causing huge replication delays?

Let me explain the problem in detail, We have a Google cloud SQL setup(1 master, 1 failover replica and a read replica). From the last two days, we are facing replication delays on both the replica ...
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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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7 views

Why are Samba policy object owners shown differently on command line between two domain controllers?

Please excuse my n00b question, but I inherited a pair of Samba 4.3 domain controllers (Debian) and I'm trying to fix some syncing problems. After running rsync on the sysvol folder from the primary ...
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Move Hyper-V VM permanently to other server with replication

I have two Hyper-V 2016 servers (HYPERV-A and HYPERV-B) and a VM on it (let's call it VMSQL). VMSQL is replicated regularly from HYPERV-A to HYPERV-B. Due to circumstances I want to move VMSQL ...
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47 views

Can't add an additional DFS target folder

I'm trying to setup DFS replication between 2 servers I have. I've created a shared folder on both servers with the same name and permissions and I've also created a namespace (Server 1 hosts this). I'...
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82 views

MSSQL 2016 Peer to Peer Transactional Replication Broken because distributor cannot alter a system table in the subscriber's database

Our set up is 2016 SQL server and we are using P2P transactional replication among our four servers. Recently one of the servers is reporting that it is trying to apply command “if COLUMNPROPERTY(...
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MariaDB 10.1.37 incorrectly reports zero Seconds_Behind_Master

I have a master MariaDB server and several replicas. All replicas report zero Seconds_Behind_Master. All but one replicas report Master_Log_File and Relay_Master_Log_File equal to that of the master. ...
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307 views

MySQL: One database slave, multiple masters

My question is: Am I able to have one database server as slave to more than one master servers with different databases. So for example: DB-Server-1 contains database Apple DB-Server-2 contains ...
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76 views

HyperV 2016 storage redundancy on non-redundant SANs

We have a setup here consisting of: More or less a dozen of HyperV hosts. Two FC SANS (SAN "A" and SAN "B"). All elements composing this infrastructure are redundant, EXCEPT for the SANs. They are ...
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62 views

Synchronize Oracle database on VM under KVM using DRBD

We have two physical servers and we want to use KVM to create some VMs. One of the VMs will contain an Oracle 12 database and we want to make it highly available. We thought of using DRBD to ...
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56 views

Azure VM Site Replication

I'm looking to set up site replication for our Azure VM's. My question is this, how often are the VM's backed up/replicated to the DR site? Is this replication automated or would I need to kick off ...
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194 views

Hyper-V Replication failing sync

I have enabled Hyper-V replication for our ERP VM between 2 Windows Server 2012 R2. Every 2 months the master server runs out of space because the replication sync fails. It creates many .AVHDX files ...
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36 views

Is it possible for a non-domain administrator to verify AD replication, with only Powershell?

Assume that no administrative tools are installed, and a users rights are limited to running Powershell, and standard user access to Active Directory. Is it possible for a user in this limited ...
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54 views

Differences between two replication agreements in freeIPA

I am back from freeIPA replication documentation you can find here https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/identity_management_guide/ipa-replica-manage I totally ...
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1k views

AD Site link best practices?

I will try and keep this simple. We have 6 sites in our fully routed network. Site 1 - 4 DCs - 1Gbps connection Site 2 - 1 DC - 1Gbps connection Site 3 - 1 DC - 50Mbps connection Site 4 - 1 DC ...
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404 views

LDAP replication works - but user passwords are missing

We created a master / slave environment, where a ldap server replicates another periodically. All entries are replicated correctly, but the attribute 'userPass' is not replicated. We assumed this is ...
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95 views

MariaDB replication and cross database queries

I need to improve backup of databases that won't load production server. I read that good solution to do that is to set database replication and do mysqldumps on slave server. But description of "...
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96 views

Migrating data from a RDS Read Replica to Redshift

I am trying to create a AWS DMS (Data Migration Service) task to migrate the data from a RDS Read Replica running Postgres to a Redshift cluster, however my task is always failing when it is time to ...
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98 views

AWS transfer RDS mysql to another region without loosing data

I wanted to transfer my mysql databaes from us-east-1 (virginia) to eu-east-1 (ireland) without loosing any data. Also, I want to stop virginia after transfering database from one region to other ...
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52 views

Why does the replicated disk become larger than original

We have two physical (one is 2012 R2, the other is running Server 2016) servers with VMs that replicate to the other computer. On Sundays we backup the replicated disks (after creating a shadow copy) ...
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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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108 views

LDAP replication?

to improve resilience, we have replicated an OpenLDAP server. There are only reading rights on the client. After some attempts, there are no more error messages. The data part is apparently ...
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158 views

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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1answer
2k views

Redis: read-only slave vs fail-over slave?

I'm reading a lot of documentation around Redis network configurations, and I'm confused about how it seems the requirements in the architecture mental model I had, don't seem to map with the current ...
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2answers
232 views

MongoDB/ElasticSearch in Kubernetes

I am exploring the Kubernetes toolset and have now my dedicated 3 nodes cluster up and running. Next steps are migrating our company projects to the cluster. As we use MongoDB and ElasticSearch and ...
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20 views

Can I replicate an Azure VM while the said VM is still running? or Will the VM stop while replicating?

I have and Azure VM which is quite critical as it is running services. I wanted to replicate that VM. My question is, Can I replicate an Azure VM while the said VM is still running? or Will the VM ...

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