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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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
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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 ...
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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.
[...
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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 ...
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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: ...
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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 ...
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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 ...
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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 ...
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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 ...
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Problems with MySQL 8.0.29 Data Corruption, Need Upgrade Path Advice
I have a master and 3 slaves running the buggy 8.0.29 version of MySQL. Yesterday 2 of my slaves stopped synchronizing and I couldn't complete a full resync from a fresh dump because I kept getting &...
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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 ...
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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 ...
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PostgreSQL Subscribers and Publishers (Multi-Master Scenario)
I'm currently trying to develop a solution that would be trying to focus on Multi-Master Databases
So here is how it's supposed to operate
I want so that whenever an Agent makes a change to a database,...
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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 ...
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Hyper-V replication to Multiple servers
i have 2 hosts that have VM's running on them. i have been able to enable replication from host A and B to 1 replica. they are not on a domain and i have had to configure certificate based ...
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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 ...
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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 ...
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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....
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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 ...
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SQL Server - Peer to Peer Transactional Replication not available on Linux, why? Any alternatives?
As written on the following page: https://docs.microsoft.com/en-us/sql/linux/sql-server-linux-replication?view=sql-server-ver16, Peer-to-Peer replication is not available on Linux, anyone knows why?
...
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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:...
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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 ...
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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 ...
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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 ...
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2
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73
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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 ...
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574
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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 ...
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527
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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://...
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216
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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 ...
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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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643
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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/...
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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 ...
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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 ...
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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 ...
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662
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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 ...
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328
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AWS EC2 MySQL Replication: Config To Query Slave From Master
I have successfully set up a MySQL master-slave situation on separate AWS EC2 instances.
The slave is running and is successfully replicating the master.
So far so good.
Now I want to be able to query ...
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239
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hyperv replica multiple sites
I wanted to know if that is possible with a hyper-v replica before I start with the implementation.
I have 3 sites hosting 3 stand-alone hyper-v servers (acting as primary) and I wanted to set up a ...
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652
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OpenLDAP replication error
I have 2 OpenLDAP servers with replication activated and everything used to work fine.
A few days ago, the "replica" account's password expired. And since then I was unable to make ...
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2nd lvl slave can't conect to 1st lvl slave mysql replication
Simple exercise but not working. Help me plase.
Context:
Lptp1, Lptp2 -> Ubuntu20.4 both
Lptp1 dbmaster, Lptp2 dbslavetwo, Lptp1 dvsubslave -> all Ver 8.0.24 for Linux on x86_64 (MySQL Community ...
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How to Mirror MariaDB schema into Mysql? [closed]
We are using MariaDB for our main service and Mysql on another for our ATM machines, I trying to fetch all the data and to have all the transactions available.
I don't know if this is possible because ...
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Data missing after ZFS replication on FreeNAS/TrueNAS
In order to use the new encryption method in TrueNAS 12 I copied all data from a legacy encrypted FreeNAS pool to a newly formatted pool via a replication task.
After replication there seems to be ...
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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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keepalived delay before bringing ip up
Is it possible to configure a delay before bringing the virtual IP up in keepalived?
Background:
I have multiple Master/Master MySQL Setups. Only one Master is used at time. Keepalived is used for VIP ...
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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 ...
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How to setup a master-slave connection with an invisible master? [closed]
I know, the question may sound weird at first but let me explain some things, I'm sure you will understand my problem after that:
I have a raspberry pi recording all data from my weather station at ...
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Prevention of replication in Azure blob storage
I have a ton of Azure storage accounts. I would like to prevent any of my users from replicating data to a storage account outside the subscription e.g. they can replicate to another region for the ...
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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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Replication Working in AD
I recently studied the concept of replication in Active directory. My doubt is, which one initiates the replication?
For example, I had DC-1 and DC-2 server. I update the user object's name attribute ...
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How can I transfer a dedicated bare metal server into a VM?
I have the following problem: We have a dedicated (bare metal) hardware server (Debian 10) on which we have no direct physical access. Now I want to transfer all data and applications that are on this ...
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How does one go about using master to master replication along with something like rsync to keep two identical copies of an application identical?
I have servers that do things for me at home, for instance they keep copies of my bookmarks in the way that del.icio.us used to (nextCloud) and keep copies of my code (gitea).
Initially I thought that ...
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Numbers of bricks is not a multiple of replica count - glusterfs
I have 10 servers and want to use all as storage so tried to create volume with following command but its throwing error
gluster volume create gv0 replica 3 server1:/data/brick1/gv0 server2:/data/...
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