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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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CDCR Replication is not working in solr 8.11.2

I have setup CDCR IN Azure VM with 3 nodes and 3 zookeeper `My Solr version is 8.11.2 Zookeeper =v3.6.2 I have setup source and target cluster with below configuration in source, We are not able to ...
Pallavi Jagtap's user avatar
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1 answer
48 views

The ipa-replica-install command failed, exception: ScriptError: A replication agreement for this host already exists

We have deployed a FreeIPA server in my company and we would like to deploy a replica. I have followed the procedure to deploy it on a personal server and it worked (https://www.freeipa.org/page/V4/...
NotBeCursed's user avatar
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1 answer
36 views

Why adding a read replica creates a "Writer instance" on AWS?

I've just created an Aurora Read Replica for my RDS database and it shows up as "Writer instance" in the list. That doesn't make much sense to me - any idea if I somehow need to configure it ...
laurent's user avatar
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0 answers
51 views

Recommandation / best practise for site to site replication as cold standby with ESXi Cluster

I have two ESXI clusters at location A, each consisting of 2 ESXi servers. 1 cluster is in the DMZ and one cluster is in the LAN. Various virtual machines are running on them. In total, there are only ...
Opa114's user avatar
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3 votes
2 answers
647 views

ZFS: Handling massive no. of concurrent RW operations and failover

I have a single ZFS/Linux instance with a file that can grow to those crazy sizes supported by ZFS. A large number of concurrent users need to read/write from/to this file over the public inter net. ...
Harry's user avatar
  • 463
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1 answer
117 views

MariaDB Replication on selected columns

I would like to ask a question that I am sure someone who is a lot smart then me can answer. I have a main MariaDB that holds all my tables and columns etc (total of 64 tables) and this is stored on ...
Andrew Gable's user avatar
-1 votes
1 answer
386 views

How to stop/break replication between 2 domain controllers that are in same domain? [closed]

So I was attempting to break replication between 2 domain controllers by editing objects in AD, since I cant just go to powershell and stop it with command, but it was unsuccessfully. I have to stop ...
user23337663's user avatar
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42 views

Can I Ldap Sync replication to a different backend?

My current OpenLDAP backend is BDB can I replicate (syncrepl) this to another server using a MDB backend? Probably a no but thought I'd ask. Thanks, Andy
Andy Fenney's user avatar
1 vote
1 answer
278 views

Get list of VMs NOT enabled for Replication using Powershell?

I want to monitor the Replication status of all VMs on our Hyper-V. All our VMs are replicated. When a replication fails OR the VM is removed from replication, I want to know. I found the following ...
WishIWasACoder's user avatar
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1 answer
153 views

how number of replicas is aligned with crush rule in a ceph cluster

I have some difficulties to understand whether the crush rule is aligned with the number of replicas. So, imagine I create a crush rule named replicate_in_2_racks as follows: ceph osd crush rule ...
gmaggi's user avatar
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484 views

1 Domain Controller(s) with replication in progress

I have 3 DCs (DC01, DC02 and DC03). If I create a group policy on any DC I find it replicated to the others. But I see an error in Group policy management, in domain status if I click “Detect Now” it ...
Mrc89's user avatar
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4 votes
1 answer
441 views

Failover Cluster Disk Replication

We have a Windows failover cluster containing a shared disk assigned to a Role and want to set up replication from it. We tried removing the disk from the cluster to use DFS Replication, however we ...
bShaver's user avatar
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0 answers
287 views

Storage Replica Configuration Failure (error code 0x8009030e)

I`m not able to establish a storage replica between 2 windows servers 2016. #The script I used $SR = @{ SourceComputerName = 'Server-1' SourceRGName = 'RG-1' SourceVolumeName = "A:" ...
marin1466's user avatar
1 vote
0 answers
363 views

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 ...
GingkoFr's user avatar
0 votes
2 answers
739 views

How to Set Intra-site Replication Delay Time (Active Directory)

Cannot configure replication delay. I have 2 domain controllers (DC1 and DC2, Windows Server 2019), both in the same site. I set the replication delay time in the Server Manager snap-in "AD Sites ...
Fancy Shmancy's user avatar
2 votes
1 answer
837 views

Is it possible to have MySQL/MariaDB bidirectional replication?

I am trying to install replication on several MariaDB servers. With no experience at all on this. I am wondering something. Would it be possible to have both servers acting simultaneously as master ...
GingkoFr's user avatar
3 votes
1 answer
234 views

Howto: Block or File replication across 3+ nodes without a SAN

The setup I admin the backend for a website that currently exists on a single node using Nginx (webserver), Neo4J (database) and Wildfly (app server). The website is getting enough traffic that we ...
SiegeX's user avatar
  • 587
0 votes
1 answer
539 views

How to know if an S3 bucket with Cross-Region Replication is fully replicated?

I want to setup my S3 bucket to replicate in another region. Once it's fully replicated, I will make that bucket the main one (the idea is to migrate all data from one region to another). I know how ...
laurent's user avatar
  • 189
0 votes
1 answer
867 views

How to know if an AWS RDS instance is fully replicated?

I setup a replica in a different region for my RDS instance. It seems to be working except that the status is always "Replicating". How can I know that the instances are fully in sync? ...
laurent's user avatar
  • 189
2 votes
0 answers
68 views

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 ...
davidgo's user avatar
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0 votes
1 answer
121 views

How Object-GUID replicated

since Object-GUID is a non replicated attribute, then how All DCs have same object-GUID for an object? how object-GUID is replicated to all DC
Sandy Santhosh's user avatar
0 votes
1 answer
206 views

How to add a new database on replication?

I have a mysql replication with two servers. There are actually 3 databases on it. On master : server-id = 1 log_bin = /var/log/mysql/mysql-bin.log expire_logs_days ...
erwann le guevedec's user avatar
3 votes
2 answers
272 views

How should I automate replication of a production MySQL db onto a read/write dev server for testing while also scrubbing the data first?

I know there are lots of variables here, and they're highly dependent upon the applications in the environment as well as the needs of the org. I read this post first, as the question was similar. [...
EdwinJ's user avatar
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1 answer
17k views

Active Directory Replication Issue

I have 2 DCs in my lab environment. So I just wanted to check the replication status using repadmin /replsummary but it throwed me an error : 1722 The RPC server is unavailable. I forced replication ...
Sushmita Chakraborty's user avatar
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1 answer
2k views

Monitoring of MySQL replication and alerting when replication is not working

I have a question about monitoring of MySQL replication and in particular about alerting using Grafana/Prometheus. We have 2 MySQL(MariaDB to be exact) instances for which replication is configured: ...
Dmitry's user avatar
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0 votes
1 answer
312 views

In terms of replication, can an OpenLDAP consumer act as a provider to another OpenLDAP server?

If I have an OpenLDAP server configured as a replication provider and a second OpenLDAP server configured as a consumer, can I configure the second server to act as a provider for a third OpenLDAP ...
loris's user avatar
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0 votes
1 answer
209 views

Why it asks me to input password here to restart db

I just have done pg_basebackup -h primary_host -p primary_port -D PGDATA -U replication user and I jsut wanted to restart the db, so I did sudo su - postgres sudo service postgres restart and the ...
user15397083's user avatar
2 votes
1 answer
456 views

Snaphot sizes in ZFS and syncoid backups of them

I got a question about ZFS snapshotting: So, as far as I understand, when I take a snaphot of a ZFS dataset, the snapshot will be initially 0 bytes in size, because at the moment of creation, there is ...
heeeresjohnny's user avatar
0 votes
1 answer
334 views

PAM deems Kerberos password as expired

I run Kerberos / LDAP authentication in a small network for years. Kerberos is held in LDAP, which in turn is replicated to another site. Machines at the second site authenticate to the replica, the ...
Lars Hanke's user avatar
0 votes
1 answer
396 views

MariaDB Master-Master replication with 3 servers, no ports open on master

I want three MariaDB database servers, one master and two "slaves". I want to be able to read and write on every server, and have this replicated on the other servers. I read on the internet ...
Niek van der Steen's user avatar
1 vote
3 answers
4k views

openLDAP certificates untrusted or revoked

I've already spent two days on this problem but I can't find any solution. Two openLDAP server run from docker on different hosts in master/master scenario. ldapsearch command or syncrepl process run ...
Bil's user avatar
  • 141
0 votes
0 answers
254 views

MariaDB replication lagging up to a dozen times a day for no obvious reasons

We first set up MariaDB replication using less powerful servers but considering our increased database load we had to rent more powerful servers and that's when the troubles began. Right now the ...
Artem S. Tashkinov's user avatar
1 vote
1 answer
459 views

kubernetes - Running dovecot with serveral replicas

I am in the process of setting up an email server through kubernetes. I managed to get postfix up and running and now am trying to setup dovecot. As I am expecting a bit of traffic for dovecot I want ...
realShadow's user avatar
1 vote
1 answer
659 views

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 ...
adam faris's user avatar
1 vote
0 answers
661 views

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....
NOC_Ninja982134's user avatar
3 votes
1 answer
797 views

How do you handle IP addressing at a DR Site

I've found various tools that handle replicating virtual machines from one physical location to another for disaster recovery purposes. The part that I am struggling to understand is how these tools ...
Brad's user avatar
  • 619
0 votes
1 answer
39 views

mongo secondary node - weird log entries

I have mogodb cluster with 4 nodes, all nodes work on standard 27017 port. I found weird things in my mongod.log on a secondary node: {"t":{"$date":"2022-03-26T23:22:34.593+03:...
Antonio's user avatar
  • 169
0 votes
1 answer
601 views

MySQL 8 replication via non-ssl connecion

I'm trying to setup tiny master-slave environment with percona-server-server.x86_64-8.0.27-18.1.el8. A plan is to use non-ssl connections between the nodes as the servers will communicate in the LAN ...
varas's user avatar
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0 votes
0 answers
198 views

Replicating filesystem Samba and Windows

I'm looking for a way to create a replicating filesystem between Samba and Windows. I thought that DFSR would be the answer but Samba doesn't support SYSVOL replication. I also looked at syncthing ...
Dweeberly's user avatar
  • 101
0 votes
1 answer
741 views

Stretch Cluster File Server with Storage Replica - Partnership not reversing on failure simulation

First off, sorry if this is the wrong place to post this. I have a Storage Replica setup running in a MSCS Stretch Cluster configuration, two sets of two VMs with each set running on a separate ESXi ...
Arcturus's user avatar
  • 101
-1 votes
2 answers
281 views

MySQL replcating huge changing data

Hi I have a master MySQL server with 950 gb of data and slave has stopped for some reason and there is a difference of 80gb of data. so I started to setup new slave . Since the data is changing and ...
Damn devil's user avatar
0 votes
1 answer
1k views

How to send a single parent ZFS filesystem snapshot and all its descendents' same snapshot to a new pool?

If we zfs snapshot -r tank@20220129, all sub-filesystems also get that snapshot. How to send that single snapshot of tank with all sub-fs's to a new pool (no historical base of snapshots)? While zfs ...
math's user avatar
  • 265
0 votes
1 answer
1k views

openldap master/slave replication configuration return TLS error from slave

I am trying to add a TLS secured replication between a master and a slave ldap server. The replication without TLS work well. I encounter this error from the slave : slapd_client_connect: URI=ldap://...
user161458's user avatar
0 votes
1 answer
622 views

Two PDCs, two ADs, two domains - how to replicate one domain/AD to the other?

Here's the history: SERVER2 was a 2016 Essentials Edition server, standalone with no other DCs. The OS became corrupted in a few areas, and so a decision was made to replace it. A standalone clean ...
InteXX's user avatar
  • 765
1 vote
0 answers
79 views

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. ...
James Bowery's user avatar
0 votes
1 answer
1k views

Should replica DB be in 'recovery' - PostgreSQL

I have two databases that are using streaming replication and appear to be in this state postgres 16319 0.0 0.5 137949952 3077260 ? Ss Aug22 0:11 /usr/pgsql-12/bin/postmaster -D /var/lib/pgsql/...
NOC_Ninja982134's user avatar
0 votes
2 answers
101 views

How to replicate growing files?

I need to replicate a bunch of continuously growing large log files from a network file share. Can't use rsync, because I don't have ssh access to the server. Is there any existing Linux tool that can ...
user1411900's user avatar
0 votes
0 answers
58 views

MySQL not saving to separate data directories

Lately I've been struggling with MySQL and it's data directory a lot. At first, I've tried docker for multiple instances but our company doesn't prefer docker no one knows why. So I come up with a ...
emir ko's user avatar
0 votes
1 answer
2k views

How to debug Hyper-V replication issues

We are hosting some VMs that are virtualized with Hyper-V. For these we have set up replication which works fine in the beginning but starts to fail pretty soon. The error it shows when looking at the ...
hypervadmin's user avatar
0 votes
1 answer
1k views

Master DB latency with AWS RDS cross region replication

I have my app setup in 3 regions (EU, AP, US) and the master MySQL RDS resides in eu-west-1, with read replicas in the other regions. This works great for read queries, with the region specific app ...
Ryan's user avatar
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