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Questions tagged [master]

The tag has no usage guidance.

0
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1answer
1k views

Upgrading XenServer 6.5 to 7.1

I'm currently running XenServer 6.5 on seven Dell PowerEdge Blade Servers. I'm looking to upgrade to XenServer 7.1. From what I've read online the upgrade is pretty simple - download the iso, reboot ...
3
votes
0answers
694 views

Kubernetes - Best Practices for Physical Network Segmentation

Based on the following design constraint, does anyone have any best practices or recommendations regarding how to deploy Kubernetes across multiple network zones? What is the most common and accepted ...
0
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2answers
63 views

Cannot figure out DNS Master Error:

I am attempting to use zone transfer between my Master and Slave DNS servers however I am unable to start my named service and receive the following error: [root@balsam named]# systemctl status named....
1
vote
1answer
1k views

Redis cluster master restarting after a time period

I have a Redis cluster with 3 masters and 3 slaves. I can add data to the cluster and get data back, no problems. The issue comes when the data is saved to a master node. After a while the master ...
0
votes
1answer
316 views

What is best method for fixing a out of sync mysql slave when pt-online-schema-change, pt-table-sync, xtrabackup do not work?

We all know, there are several methods for syncing data from a mysql master to a slave. After reading many blogs about this issue, two common tools always come up: pt-online-schema-change pt-table-...
0
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2answers
136 views

DNS / Update slaves without NOTIFY from master

If I have a master zone which is configured not to send any NOTIFY's, can the slaves still query the master, check the serial and get a zone-transfer? I thought there were 2 possibilities: Master ...
1
vote
1answer
933 views

PowerDNS error with slave

I have a PowerDNS 3.3 server installed on Ubuntu 14.04 (for testing). It should be master only. No slave exists. I keep on getting this error: Received NOTIFY for mydomain.com from 82.91.23.176 but ...
1
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0answers
2k views

Nginx/PHP5-FPM master process - high CPU usage

I've been having some weird issues with PHP-FPM and high CPU usage from the master process. I normally have CPU spikes from traffic since we have a lot of websites but I also run heavy caching with ...
2
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1answer
611 views

Setup a non-CA Puppet Master

I would like to set up an additional puppet master to act as a non-CA server. I’ve have installed and am successfully using Passenger. The servers in question are all running CentOS 6.6 and are all ...
3
votes
2answers
718 views

Static master in Redis replication

I'm running replicated Redis that includes a master and just one slave. My goal is to implement a replication (using Redis sentinels) in which the slave becomes master when the master goes down, but ...
0
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1answer
851 views

Xen.org Master/Slave in a pool with HA-Lizard

I have a pool of 3 servers with XCP only, each with 1 VM running on them, and managing them through XenCenter. Since the opensource version of xen does not have support for HA, I am using HA-lizard, ...
-3
votes
1answer
40 views

how to run postfix by hand

I compiled postfix 2.9.5 with mysql backend.You know postfix daemons are ran with postfix, So i don't know main postfix daemon to run by hand. What's main daemon ?
1
vote
2answers
1k views

Is it possible to create a mysql slave from start of masters binlog without copying data first?

info: my tables are all innodb. i know i can create a mysql slave by copying the data from master to slave and noting the position in the binlog and set that on the slave. thus the slave should be ...
0
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1answer
218 views

Move MySQL master

I currently have a master db server (lets call it db1) and 6 slaves (slave1-6). I've setup a new server (db2) as a slave of db1 and it's in sync. I want to change all the slaves to use db2 instead of ...
2
votes
1answer
1k views

Can I restore master to a different name as a user database

I need to look at the contents of sysdatabases from an older backup of master, but I do not want to overwrite my master databse. Can I use the rename option of the restore command to restore master ...
2
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1answer
420 views

MySQL Replication: Move slave to be slave of another slave, without any (or least possible) downtime

I have the following setup: M1 = Master 1 S1 = Slave 1 S2 = Slave 2 S3 = Slave 3 Where all slaves are replicating directly from M1. I would like to move S2 and S3 to be slaves of S1. I'm not sure ...
0
votes
1answer
409 views

bind9 and multiple zone master based on domains

Is it possible to setu bind9 as a caching server, but for specific domains to use one zone master and for the nonspecified to use another zone master? Our setup: Inhouse there is a DNS-server, which ...
0
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1answer
752 views

mysql - replicating to db with a different name

Can a mysql db named statsDb on server1.example.com be replicated to a db named newNameDb on server2.example.com ? server2.example.com already has a statsDb. Thanks for your help.
1
vote
2answers
6k views

Is replication from MySQL 5.5 master to a 5.1 slave possible?

Short Version: Is replication from 5.5 master to a 5.1 slave possible? Long Version: We did a large scale upgrade from 5.0 to 5.5. It was a long process if dumping the 400gb dbs and importing them ...
0
votes
1answer
1k views

Bind master/slave, with public and local views, after sync slaves share private on public

I have a master/slave dns system in place using bind. The master has 2 views, a local and a public. There are 2 slave servers that have these same views (Copied the config file to the slaves and ...
1
vote
2answers
82 views

App for managing/testing code on remote cluster of machines

(Not sure if this is the right group) I have a situation where I have a number of apps that get created/built. These apps change over time, so they need to be tested. I have a number of distributed ...
2
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4answers
16k views

How to find slave's IP address and user name from Master server?

I am writing a code to extract the ip address and username of slave server in a MySQL replication environment. Does anyone know any function, variable, or something that I can run on the console and ...
2
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4answers
3k views

Mysql replications: slave is not readonly

After setting up mysql replications with master/slave db scheme, I noticed that the slave db server is not read-only. Of cause, after that I configured it manually in /etc/my.cnf file. I just can't ...