Unix and Linux Stack Exchange
Unix and Linux Stack Exchange

Questions tagged [replication]

43 questions
27
votes
6 answers

how to one-way mirror an entire zfs pool to another zfs pool

I have one zfs pool containing several zvols and datasets of which some are also nested. All datasets and zvols are periodically snapshotted by zfs-auto-snapshot. All datasets and zvols also have some manually created snapshots. I have setup a…
Costin Gușă
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12
votes
1 answer

ZFS on Linux send/receive resume on poor/bad ssh connection

I am using ZFS on Linux, and trying to setup remote replication. But I have bad ssh connection, and zfs send/receive over ssh restarts again. I know there is a issue on ZoL, but I don't know when it will be implemented, or a new stable release come.…
Ural
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7
votes
1 answer

Btrfs/ZFS Network Replication

Is it possible to replicate a ZFS or Btrfs raid volume in real-time (or as close to as possible, network specs aside) over a network? ZFF and Btrfs are ideal because of their CoW properties. I'm thinking something similar to DRBD, but DRBD won't…
DevinM
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5
votes
1 answer

Periodic filesystem replication wih snapshot

I'm looking for a non-realtime replication solution that supports periodic snapshot. Here's my current situation: I have 2 email servers running Ubuntu 12.04 LTS The mail server program I use is Axigen v8.1.1, serving 2000+ mailboxes, with a rate…
pepoluan
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3
votes
2 answers

Unidirectional syncing/replicate large file incrementally

I have a binary file on a Linux server that is being actively appended by a process (written in C with a constantly open file handler and flushing non-ASCII buffer to this file). I would like to replicate this file to another server without locking…
rocketman
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3
votes
1 answer

DRBD Failure: (127) Device minor not allocated

I use wmware workstation to run two virtual machines with OpenVZ 2.6.32-042stab108.2 installed on top on CentOS 6.6. I have created another primary partition, /dev/sda4, to configure it as drbd resource. I also created a filsystem on it. The second…
Tanatos Daniel
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2
votes
2 answers

Copy website from RedHat to CentOS

We currently have our website and website's CMS hosted on a dedicated host which runs Red Hat. We want to remove Red Hat and install CentOS instead. My question: is there a straight forward way of replicating all the server settings, PHP, Apache,…
oshirowanen
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2
votes
1 answer

mysql replication not working

I have two servers A and B I tried to setup replication between two servers for fixed dbs DBA and DBB but it's not working my configurations Tables are not getting updated why??…
harish.venkat
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2
votes
1 answer

Cannot replicate DNS zone data from master on LAN to slave behind firewall in a DMZ

Here is some information about my setup. I have a master DNS server in my LAN subnet running on a Ubuntu 16.04 box. In addition, I have some slave DNS servers on my various other subnets (DMZ subnet, service subnet, etc.). All DNS slave servers run…
Søren Sjøstrøm
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2
votes
1 answer

GlusterFS replicated volume - mounting issue

I'm running GlusterFS using 2 servers (ST0 & ST1) and 1 client (STC), and the volname is rep-volume. I surfed the net, and read all articles explaining how to fix mounting issues but unfortunately nothing could help me. The first time I used the…
Parsa Samet
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2
votes
1 answer

Automating Master/Master replication setup and configuration on two servers

I'm in the middle of writing a script to automate configuring MySQL replication between two servers (Master/Master replication), and was looking for some advice on a few things related to MySQL. The goal is to basically allow the same script to be…
Justin
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2
votes
1 answer

Option --skip-slave-start Not Working with Systemctl

I just started with centos 7. I'm trying to get replication working and am attempting to start mysql without starting the slave (so that I can set the pointers as to where it's supposed to resume replication before it starts). Typically I would…
WXMan
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2
votes
1 answer

Segmentation fault (core dumped) when try to run iptables rhel6

I'm currently trying to set up a MySQL replication and I don't have a /etc/sysconfig/iptables. So I tried to install it with yum install. It showed the following output. Installed Packages Name : iptables Arch : x86_64 Version :…
BlueFox
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1
vote
1 answer

ZFS send/recv full snapshot

I have been backing up my ZFS pool in Server A to Server B (backup server) via zfs send/recv, and using daily incremental snapshots. Server B acts as a backup server, holding 2 pools to Server A and Server C respectively (zfs41 and zfs49/tank) Due…
LooseAlien123
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1
vote
1 answer

(Almost-)Atomic way to merge 2 folders

I'm exploring the different ways to add some consistency to a file deployment operation. The current situation is : A current version folder which contains approximately 100K different files /current /path1 file1 file2 ... /path2 -…
Bil5
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