Questions tagged [master]
The master tag has no usage guidance.
29
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59
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Does slave bind9 DNS server answer with dhcpd DDNS updates included?
When I set up ISC dhcpd with a primary and secondary as failover and I have bind9 set up as master/slave and I configure the dhcpd so that it sends the ddns updates also to the slave dns that is set ...
- 13
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64
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K3S master does not start due to v1.Event to any object conversion error
I'm running k3s 1.26.4 on a small 4 nodes home lab cluster (1 master/worker + 3 workers).
Today, the master node crashed, and a forced reboot was the only solution.
Since then, the master node refuses ...
1
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0
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550
views
Retrieving the current PTP settings of an Ubuntu machine
I have an Ubuntu machine (18.04) with PTPd installed. I want to write a script that can determine what PTP settings have been set previously.
Specifically, I want to find information on the master PTP ...
- 113
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2k
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postfix/master[1908]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling
I'm getting this error message for quite sometime and unable to find I exactly missed in the postfix mail configuration. Please see my master.cf and main.cf below.
MASTER.CF
Postfix master process ...
- 11
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1
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2k
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Two domains in one DNS zone file
I manage an authoritative DNS server for my organizations DNS.
We recently purchased additional domain names which end in a different domain than the one my organization has.
For example, my ...
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1
answer
3k
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MySQL: One database slave, multiple masters
My question is:
Am I able to have one database server as slave to more than one master servers with different databases. So for example:
DB-Server-1 contains database Apple
DB-Server-2 contains ...
- 1,048
1
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2
answers
2k
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 ...
- 688
3
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1k
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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 ...
- 31
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2
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922
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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
1
answer
3k
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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
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1
answer
675
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-...
- 131
1
vote
2
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854
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 ...
- 13
1
vote
1
answer
3k
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 ...
- 145
1
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0
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3k
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 ...
- 11
2
votes
1
answer
755
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 ...
- 73
3
votes
2
answers
850
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 ...
- 33
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1
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930
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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, ...
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-3
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1
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64
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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 ?
- 612
3
votes
2
answers
2k
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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 ...
- 31
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1
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261
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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 ...
- 1,386
3
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1
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2k
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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 ...
- 31
2
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1
answer
1k
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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 ...
- 43
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1
answer
519
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 ...
- 3
0
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1
answer
957
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
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2
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7k
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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 ...
- 977
1
vote
1
answer
2k
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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 ...
- 167
1
vote
2
answers
99
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 ...
- 461
9
votes
4
answers
31k
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How to find slave's IP address and user name from Master server?
I am writing code to extract the IP address and username of all slave servers in a MySQL replication environment.
Does anyone know any function, variable, or something else that I can run in the ...
- 321
2
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4
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4k
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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 ...
- 123