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-2
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2answers
49 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
81 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 ...
6
votes
1answer
544 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
78 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
202 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 ...
0
votes
1answer
103 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 ...
4
votes
1answer
980 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 ...
1
vote
1answer
110 views

mySQL: Slave not able to connect to Master for replication

On my master, I did: GRANT REPLICATION SLAVE ON *.* TO 'repluser'@'%' IDENTIFIED BY 'mypassword'; On my slave, I see: mysql> show slave status \G; *************************** 1. row ...
1
vote
1answer
73 views

Percona xtradb cluster with asynch slaves

I have a Percona xtradb cluster set up with 3 nodes. Node 1 is also set up as a master with an asynchronous slave. When I make an update to Node 1, it is replicated to the cluster as well as the ...
0
votes
1answer
63 views

Replicate from slaves to master and viceversa

I've a great dilema here and didn't know how to solve it. I need to replicate a few tables from MySQL DB (slaves) to MySQL DB (master). Take as an example this: MySQL DB (master) table1 table2 ...
3
votes
1answer
511 views

Configure fallback redis server

I am using redis as a cache server. Can I somehow configure multiple redis servers, that the cache is fully functional (read/write) even if some of them go offline? I looked into master->slave, but ...
1
vote
2answers
176 views

Overwrite SOA expiry in a bind9 slave name server.

I run a slave name server of a domain that I do not have full control over (i.e. changing the SOA is not possibly). The SOA specifies an expiry time of one week. For various reasons, I’d like to ...
0
votes
1answer
120 views

Moving Redis persistence to a slave

Redis' background AOF rewrites are killing performance of our service. The general consensus is to move AOF persistence to a slave in a separate VM and disable it on master. There is a problem with ...
2
votes
1answer
616 views

BIND no longer responds to AXFR Requests

Recently we moved our primary external DNS server. It has three caching DNS slaves in front of it provided by our ISP. They've told us they've started getting access denied requests when doing zone ...
6
votes
2answers
1k views

Magento hosting on a budget

I have to do a setup for Magento. My constraint is primarily ease of setup and fault tolerance/fail over. Furthermore costs are an issue. I have three identical physical servers to get the job done. ...
1
vote
2answers
582 views

Ulimit settings in Oracle 11g on Linux 5

Is there an issue with "Ulimit -Hn" being set too low (at 1024) when (Oracle recommend 65536)? This is for Oracle 64-bit 11g on Linux 5. It is one of the settings that appears to be woefully short ...
2
votes
1answer
296 views

Using Amazon RDS (or similar) as a slave

Officially, RDS instances can't be directly set up to slave non-RDS databases. My production master is MySQL running on Hetzner and I want an RDS instance to closely follow it for backup purposes, ...
0
votes
3answers
328 views

Design a DNS Master/Slave with SVN

I am looking for a good design of a master, slave DNS servers with SVN. Few doubts bothering me are: Would it be good if I have a post-commit hook to replicate/rsync the DNS master data to the ...
3
votes
1answer
414 views

MongoDB -what's the safest and most efficient way to change from Master-Slave to ReplicaSet?

I now have two mongo servers with a Master-Slave configuration (all read-writes are done with the Master, the Slave is just a cold backup) serving a pretty demanding web app. I want to switch to ...
1
vote
1answer
174 views

MongoDB ReplicaSet Elections when some nodes are down

I'm trying to get into ReplicaSet concept, and found something weird in mongoDB Documentation: For a node to be elected primary, it must receive a majority of votes. This is a majority of all ...
5
votes
1answer
2k views

BIND, Master, Slaves and Notify

It might seem like a very basic question, but, how is a master DNS server aware of its slaves? I mean, does it parse the zone file and determine where to send the NOTIFY message? And if that is the ...
2
votes
2answers
2k views

--log-slave-updates is OFF but some updates are still logged to the slave binary log?

MySQL version 5.5.14 According to the document, by the default, slave does not log to its binary log any updates that are received from a master server. Here are my config. on the slave: # egrep ...
2
votes
1answer
943 views

pgpool2+streaming replication failover on only 2 servers?

I am trying to configure pgpool2 and postgresql 9.1 to handle failover. I currently have streaming replication running, and are using pgpool2 for read-only load balancing. I have 2 servers in my ...
1
vote
1answer
78 views

Backups from MySQL slave server — Good idea or bad?

I'm have one MySQL master and two MySQL slaves set up to replicate. I'm running my database backup process, consisting of an Xtrabakup (via the perl wrapper Innobackupex) backup and an atomic ...
3
votes
2answers
778 views

How to slave real-time data from two MySQL sources merging in to one MySQL destination?

I have two different MySQL instances that I would like to 'slave' to a third instance. (so I can do easy joins on the third instance) eg. mysql1> show databases db1 db2 mysql2> show databases ...
0
votes
1answer
186 views

Can I turn eNom in to a slave, or somehow work side by side?

I ran out of space at eNom, and can add no more sub domains. Now I'am setting up bind9 on my server and was wondering, can I turn eNom in to a slave. I would have preferred running my dns server as ...
1
vote
1answer
165 views

making slave server as master for another server

I have three servers, Server X, Y, and Z. I have the main mysql DB on X (innodb DB). now I have created Master-Slave from X to Y. everything is working fine here. and now i set Y as a master for Z. ...
1
vote
3answers
487 views

Can DNS do failover switch for a domain?

I have heard about round robin solution. But that one is making different request to different ips to do load balancing. What I want is making one IP as master, only if it dies, the DNS server switch ...
0
votes
2answers
85 views

MySQL Master Slave Replication Not Working

I setup MySQL master slave replication, but none of the databases, tables, and data is being copied over to the slave from the master. Here is the relevant configuration on the master: server-id=1 ...
1
vote
1answer
305 views

mysql replication - slave seems up to date but data not synchronized

I have a master-slave setup with 2 servers over a network. Due to an error, the slave IO thread stopped, though I could get it started and running, the slave is way behind the master. Also, SHOW SLAVE ...
0
votes
0answers
351 views

Error 'Unknown table engine 'InnoDB'' on query. after restarting mysql

I have mysql DB on server S1 (mysql version 5.1.41-3ubuntu12.7-log), i have created master-slave for this DB on server S2 (mysql version 5.1.54-1ubuntu4-log). the DB on S1 was using one data file ...
3
votes
2answers
405 views

Online Schema Change Strategies for Large MySQL Tables

I'm curious to hear strategies and methods people use for performing alters on very large tables in MySQL. Large could be any number of rows or size that would be impacting to alter. For the sake of ...
8
votes
3answers
5k views

Bind zone transfer refused

UPDATE: BIND Version: [root@10.224.45.130] $ named -v BIND 9.3.6-P1-RedHat-9.3.6-16.P1.el5 Operating System: CentOS release 5.6 (Final) After running [root@10.224.45.131] $ dig @10.224.45.130 ...
1
vote
3answers
564 views

MySQL slave reporting incorrect values for Seconds_Behind_Master

I have a MySQL slave that when it is 0 seconds behind the master, it correctly reports 0 Seconds_Behind_Master. However, if it gets even 1 seconds behind, it reports 14401 Seconds_Behind_Master (which ...
4
votes
2answers
3k views

MySQL slave replication reset with no Master Downtime (using MyISAM)

Root of the issue: In all instructions for creating a slave on a running master requires flush tables with read lock. We use MyISAM, so we can't just use --single transaction to get consistent table ...
0
votes
2answers
191 views

I can't enable binlog in MySQL

I am trying to enable binary log in order to create master slave for my DB. MySQL version is 5.1.41-3ubuntu12.10-log I have added this to my.cnf log_bin = /var/log/mysql/mysql-bin.log ...
1
vote
1answer
179 views

Erratic Seconds_Behind_Master

One of my MySQL slaves will at one moment, report 57 seconds behind master, and the next will show 0. I am also monitoring with mk-heartbeat which shows an average of less than 1 second. MySQL and ...
0
votes
1answer
54 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.
0
votes
1answer
97 views

High Availability MySQL question

So I'm currently testing a new DB topology before moving it into a production environment, and I've run into a rather odd problem. The current setup is as follows: 5 server instances. 2 are MySQL DBs ...
0
votes
1answer
31 views

add additional mysql master

I currently have 2 mysql servers running, 1 as master and 1 as slave as in the mysql manual http://dev.mysql.com/doc/refman/5.0/en/replication-howto.html master->slave What I want to do is add a new ...
3
votes
2answers
407 views

Why does MySQL replication break on missing row, then continue after “START SLAVE”?

The title is a bit confusing, but I can't think of a better one. What I have is a simple vanilla MySQL replication, with the slave occasionally failing, with this error: Error 'Can't find record in ...
3
votes
2answers
1k views

mk-table-sync in a master-slave scenario: Changes not replicated to the slave

I have being employing mk-table-sync to synchronise tables from a master to slave on mysql 5.1. Unfortunately, while differences are correctly detected, modifications done on the master ...
4
votes
3answers
6k views

Automated failover strategy for master-slave Mysql replication - why would this not work?

I'd like some feedback about this failover strategy for a couple of MySQL servers I'm speccing up for a cluster, and I want to check if there's something obvious I'm not missing here. One app server ...
0
votes
1answer
1k views

Master Server Bind i's OK but Slave NO

I install two dns server (BIND 9) was the first master, the second is slave. In Master Server: The file /etc/bind/named.conf.local zone "globaltic.tk" { type master; file ...
3
votes
4answers
297 views

Old, stale DNS slave server considered harmful?

Its been a while since I was dabbling in DNS setups, so my knowledge might be a bit outdated. We have a domain for which master server is administered by our team, and slave server is provided by the ...
3
votes
2answers
5k views

MySQL simple replication problem: 'show master status' produces 'Empty set'?

I've been setting up MySQL master replication (on Debian 6.0.1) following these instructions faithfully: http://www.neocodesoftware.com/replication/ I've got as far as: mysql > show master ...
3
votes
1answer
586 views

M-M or M-S replication of EBS volume across multiple EC2 instances

I would like to share EBS backed file system of size up to 20GB in 200K files across multiple EC2 instances. Master-master would be ideal, but I'd be happy with master-slave solution too. I know that ...
-2
votes
2answers
88 views

Given three dedicated servers how do I implement a development cycle?

I am a beginner to server administration and network design. Following is the requirement: I have three dedicated servers. These three servers need to accomplish following: There is a master DB ...
0
votes
2answers
355 views

MySQL Incremental backups with Master-Slave replication

we have a MySQL system in Master-slave replication mode. Currently we are doing full backups with mysqldumps to a remote disk server. I think is best to do one full dump and many small incremental ...
0
votes
1answer
203 views

How to setup geographically different primary/secondary, master/slave DNS services at domain registrar?

This is a followup question to my previous post Multiple free dns services redundant as name servers of a website? I would like to setup DNS services as primary/secondary, master/slave and would like ...