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Questions tagged [master-slave]

The tag has no usage guidance.

0
votes
1answer
553 views

Promoting MYSQL Slave to MYSQL Master

I have a MySQL setup with one master (M1) and one slave(S1). Due to some unforeseen issue I need to promote my slave server to master and demote master to slave. My MySQL version is 5.6 in Linux. ...
1
vote
1answer
2k views

Jenkins build happening on master instead of slave

I have been working on an android OS build automation through Jenkins and the repository is massive and the build itself takes a fair amount of time. Therefore, I need to to run on my slave that has ...
3
votes
1answer
2k views

Jenkins windows slave unable to connect

Trying to start Jenkins slave on Windows with Java Web start gives me this: >java -jar agent.jar -jnlpUrl https://jenkins.example.com/computer/slave-office/slave-agent.jnlp -secret ...
0
votes
1answer
256 views

Keepalived loadbalancing with Nginx not working with only backup Nginx alive after Master Nginx dies

I am using 2 Nginx servers on 2 different machines with Keepalived installed respectively on both machines. Below is the configuration for both Keepalived. MASTER KEEPALIVED vrrp_instance VI_1 { ...
0
votes
1answer
114 views

Mysql Master-Slave replication database duplication issue

I have done master-slave replication for performing web-server mirroring. Web contents are getting replicated properly. But I am facing issue in database replication. Database is replicated and slave ...
0
votes
1answer
824 views

MariaDb Master-master replication

I tried master-slave replication of mutliple databases of mariadb-5.5.52-1 in RHEL environment, the mariadb came as a part of nagiosxi application. while replicating from master to slave i had many ...
0
votes
2answers
1k views

MySQL Master-Master with offsets getting ERROR 1872

I'm trying to fix the replication between a master-master MySQL database replication model. Server 1 (with the IP of 192.168.2.6) is configured with: auto-increment-increment = 2 auto-...
0
votes
1answer
149 views

Master/Master and Master/slave replication issues on raspberry pi 3

So for 2 weeks, I've been trying to set a Master/Master replication ( with apache2 web server and mariadb database ) on two Raspberry pi using different methods I've found all over the web ( french ...
1
vote
1answer
297 views

Zone transfer from KNOT (master) to BIND (slave) fails with NAUTH

There is a KNOT DNS master name server that I do not manage myself for my domain. I try to setup a BIND DNS server as a slave in-house. BIND fails to do the zone transfer and reports 31-Dec-2017 16:...
0
votes
1answer
303 views

Centos 7 , Master-slave replication iptables?

This is the iptables on my mysql_slave server: # sample configuration for iptables service # you can edit this manually or use system-config-firewall # please do not ask us to add additional ports/...
0
votes
1answer
254 views

overwrite values with mysql master-slave replication

I have a production database with master-slave replication being done on it. Production DB backups are done off of the slave server. I'd like to make it so that an arbitrary number of development ...
0
votes
1answer
526 views

Domain Slave Zone Definition

I've been using Linode for about a year, and am still confused by 'Master' Domain Zone and 'Slave' Domain Zone terminology on their DNS Manager. The term 'Zone' in conjunction with 'Master' AND 'Slave'...
0
votes
1answer
81 views

Master-Slave semi circle replication not working in MySQL

I didn't know how to describe it so I am calling it semi circle. Here's what I am doing. Server A Server B = This is slave of Server A Server C = This is slave of Server B When I update something ...
0
votes
1answer
2k views

Multi source replication not working in MySQL

I am trying to setup multi source replication. In my slave I have defined following two properties in its configuration file. master-info-repository=table relay-log-info-repository=table These ...
0
votes
1answer
122 views

Making master server slave of another master

I have 4 MySQL servers Master1, Master2, Master3 and Master4. Both Master1 and Master2 are masters of each other while Master3 and Master4 are masters of each other. I want to make Master3 slave of ...
1
vote
2answers
954 views

Why Redis slaves don't take over the master after master fail in Redis Cluster?

I have a Redis Cluster with 2 masters and 4 slaves (2 slaves for each master). After I manually crash a master (i.e. redis-cli -p 6379 debug segfault) slaves doesn't do anything. They detects that ...
0
votes
2answers
78 views

Bind DNS named.config serial- Should it autoincrement? Alternatives to ammending it each time

I'm configuring a DNS service for the first time which involves a master DNS server and a slave DNS server. On investigating why the slave zones were not updating after I make edits to the zones on ...
2
votes
2answers
684 views

Slave DNS server (bind) zone files transffered but data is unreadable

I've set up a slave DNS server on Linux using bind. On starting the named service the zone files transffered to slaves/ but the information in the files looks like its in strange computer symbols (i'm ...
2
votes
1answer
322 views

Port out of range in ReplicatedDB ActiveMQ

I have 3 replicated machines with Zookeeper and ActiveMQ (linux). I can confirm that zookeeper works correctly since I can see their ports (2888 and 3888) listening via netstat. The problem is ...
0
votes
1answer
43 views

creating a consumer by cloning the provider in openldap, anything wrong with that?

I have setup an ldap server on centos 7 as a provider and created a consumer by simply cloning the provider and adding syncrepl.ldif to it and seems to work just fine. In all the documentations and ...
0
votes
1answer
330 views

Can not select multiple LDAP servers with authconfig bug report

There is this bug report "Can not select multiple LDAP servers with authconfig" Red Hat Bugzilla – Bug 1142830; https://bugzilla.redhat.com/show_bug.cgi?id=1142830 which is suppose to be solved on ...
0
votes
1answer
51 views

how a client switches from provider to consmure openldap centos 7

I have setup a basic provider/consumer and client openldap on centos 7. Data does get replicated to the consumer when I add something to the provider and it is all synced up. The client can read info ...
0
votes
1answer
812 views

openldap replication on centos 7 not replicated

I have setup a simple openldap server on centos 7 minimum. Added a couple of users and setup a client that can retrieve the users using getentpasswd and ldapsearch works fine between the two. Then I ...
0
votes
1answer
332 views

Master and slave bind DNS servers with different version

I am having issues with my master-slave setup, so I'm trying to release what is an causing troubles. Master is running on CentOS Linux release 7.1.1503 (Core) and using BIND 9.9.4-RedHat-9.9.4-29....
0
votes
1answer
2k views

Mysql master-slave replication very slow

We're running a MySQL master-slave replication set-up and the slave is very slow at catching up. There seems to be no high network or cpu usage while the slave is going through the masters' logs. ...
0
votes
3answers
876 views

Web Server failover solution [closed]

Sorry for a dumb question but I`m a green hand yet. I have two Linux server: one of it is running Apache with MySQL to serve my web-platform (master server) another one is supposed to be a sort of ...
2
votes
2answers
485 views

The right way to set up master and slave nameservers

I'm wondering about the proper way to set up a master and slave DNS. I read somewhere that your master DNS server should not have an NS record in your zone file - that's sort of secret and then your ...
1
vote
2answers
7k views

MySQL master-slave replication not updating

This is my first time setting up master-slave replication. I am using this as a guide. I followed the steps and all works till the last part when i need to verify the replication. When i create a new ...
0
votes
1answer
356 views

XtraBackup restore gives duplicates on slaving?

We've recently upgraded a MySQL 5.0 master-master setup to Percona 5.6. Slaving went b0rken due to some failures on our side, but we thought we could simply fix it by using xtrabackup to create a ...
1
vote
1answer
1k views

BIND9: Send Notifications on Specific IP Address

I've been trying to implement a bind master->slave setup between two machines, but I've a problem regarding the IP address BIND used on the master to notify my slave machine. Here is my setup: ...
1
vote
1answer
202 views

Best method to ensure Mysql master slave replication is consistent?

I am running a master slave replication system on AWS EC2 systems over ssh. However I came across a couple of best practice articles indicating that even this might allow inconsistencies to creep into ...
0
votes
1answer
828 views

CRUD with MySQL Master-Slave Architecture

I have setup mysql master-slave replication with 1 master and 3 slaves. Now that I have finished setting up the architecture I am curious as to the best way to make my reads. I realize all writes, ...
0
votes
2answers
9k views

ERROR 1130 (HY000): Host 'host' is not allowed to connect to this MySQL server, only on slave

So I have a master and a slave in a mysql cluster, the syntonization works as it should however I am not able to connect to the slave from any host except from the server it self. I have no problems ...
-2
votes
1answer
228 views

Restart periodically two linux server with master slave dependency

My system is configured as follows: database server on a linux server web application on another linux server For sanitation purposes I would like to restart these servers during night at least once ...
2
votes
1answer
110 views

Performance-wise, is a DNS Slave better to have than two duplicate Masters?

I have two bind9 servers that are not setup with duplicate settings and know nothing about each other. Our CPU usage is sitting around 7% - 10%: mostly bind, which I believe is perfectly in range for ...
1
vote
1answer
125 views

How to configure an additional BIND instance for a domain already described by other public name servers?

Background I have a small virtual server hosted by my provider and there I have configured a relatively simple combination of postfix, dovecot and roundcubemail (backed by nginx) that works OK. I ...
0
votes
1answer
36 views

Configuring different read and write targets for OpenLDAP

I have a new piece of infrastructure (a simple LDAP web service) that will be a drop-in replacement for something that currently exists in production. The backend OpenLDAP server will not be upgraded ...
3
votes
1answer
757 views

Howto do VCSA redundancy?

We are currently in the process of setting up a new VMWare environment which is now only in lab phase. We are studying the possibility to have a vCenter cluster with an active and a standby/mirrored/...
6
votes
1answer
6k views

Pacemaker DRBD resource not getting promoted to master on any node

First off, I'm no linux specialist, I've been following tutorials and been working with the help of google, this worked out fine until now, but currently I'm stuck with a problem. I'm using CentOS 6.5 ...
2
votes
3answers
2k views

MySQL - Does the change in MySQL master db password affect on slave db?

I want to change the MySQL DB password on the master db. My question is: do we have to care for the slave DB when changing the master database password?
4
votes
0answers
7k views

Nameserver: Slave can't transfer zones from master [closed]

My slave can't transfer the zones from the master. My configuration: Master server: Ubuntu 12.04 with Plesk 11.5. Plesk uses Bind 9 as nameserver. Slave server: Ubuntu 12.04, Bind 9. To tell the ...
0
votes
3answers
6k views

BIND Slave Receiving Notify From Other Slave?

I have a master nameserver setup with a few slaves as well. Today I was changing one of the slaves to a new server when I came accross a weird error message. After updating the DNS records on the ...
2
votes
1answer
1k views

Bind9 Master Slave replication

I have Bind9 on Debian for NS1 and NS2 They are two virtual machines. I create a file /etc/bind/zones/db.domain.com Then I have to add this to the /etc/bind/named.conf.local zone "domain.com" { ...
-2
votes
2answers
2k views

Is it possible to do mysql replication with one server in internet and another in a intranet?

I have a server in internet that must have all data synced (dont need to be in realtime) from a server from a intranet (obviously has internet connection). Is it possible? How about sync both sides, ...
2
votes
1answer
994 views

I really want a wildcard NS record in BIND. Is there a workaround? [duplicate]

We have a public DNS provider, a private DNS master, and a private DNS slave. The public DNS provides the "example.com" zone, and all of it's subdomains. Our private DNS also provides the "example.com"...
8
votes
2answers
11k views

Mysql Slave stuck in “System lock”

My MySQL slave is spending a lot of time in Slave_SQL_Running_State: System lock. I can see that the system is currently I/O write bound, and that it is processing the log, although slowly. Show ...
0
votes
1answer
367 views

DNS Slave doesnot serve new record while master is down until restart

could anyone explain the behaviour of DNS slave. i am testing dns server, for internal purpose, and after configuring master slave everything works fine, but i am willing to understand the mechanism ...
4
votes
2answers
2k views

How to change the master in a MongoDB cluster without restarting the process?

Reading the documentation of MongoDB about how to configure a master-slave configuration of a cluster (our cluster will have more than 12 nodes, so unfortunately we can't have a replica-set ...
-1
votes
1answer
297 views

understand BIND9, DNS Master and Slave Zones [closed]

edit: (for clarification) I have two servers. Server 1 has a static IP, and server2 has a dynamic hostname using DDNS services. both servers are running Ubuntu 12.04 lts, and virtualmin. on server 1,...
7
votes
3answers
25k views

BIND slave doesn't sync up with master until it is restarted

I have two DNS servers running BIND9, one master and one slave. When the zone file is updated on the master, I want the slave server to immediately start serving the changed record(s), but BIND is ...