0
votes
0answers
64 views

glusterfs mounts get unmounted when 1 of the 2 bricks goes offline

I have an odd case where 1 of the 2 replicated glusterfs bricks will go offline and take all of the client mounts down with it. As I understand it, this should not be happening. It should fail over ...
3
votes
1answer
284 views

Redis sentinel + HAProxy failover

I am looking to implement a HA redis implementation using Master-Slave redis servers. The web servers will connect to these through an HAProxy instance installed on each box. The situation is easy ...
2
votes
0answers
143 views

Openldap Mirror Mode replication failover

We have currently one master ldap server and around 400 slave servers which are partially replicated through that master.All openldap versions are same and 2.4.31 What we want is actually if master ...
1
vote
2answers
431 views

MongoDB replicaSet failover incurs 1000x query response time increase

I'm testing a production MongoDB replica set failover. When I manually fail one of the instances I see an approx. 1000x (one thousand x) decrease in response times of my PHP queries. I'm on the ...
1
vote
1answer
75 views

Is failover with only two servers possible?

I'm trying to set up a basic high-availability solution with HAproxy and mysql. Currently it looks like this In case of host1 failing, the host2 is supposed to get it's IP and traffic (using feature ...
1
vote
1answer
313 views

postgreSQL replication and failover with repmgr on Ubuntu

I'm new to Linux and have been tasked with setting up a redundant Linux DB server with PostgreSQL. preferably the fail-over needs to be automatic, but a manual process will be fine for now. What I ...
2
votes
4answers
95 views

Looking for a solid redirection infrastructre [closed]

We have critical servers (webservers and databases) that are fully replicated, except for the reverse proxy that we use to hide the internal stuff. This proxy is acting like a router that filters and ...
0
votes
1answer
192 views

hosted failover(proxy?) service - does it exist?

We're in the planning phase to make our web application services redundant. Right now we've got our own physical servers at a colo, running a VMWare cluster connected to an EqualLogic SAN. It's a LAMP ...
0
votes
1answer
218 views

How to use AppScale

There are some wiki which explain how to install and setup AppScale. But I didn't find anything related to the extensive use of AppScale. I mean, what to do in case of major outage ? If the node ...
1
vote
1answer
490 views

MongoDB: Fixing ReplicaSet Error on reconfig - “Server::doWork task:rs Manager exception:unauthorized db:local lock type:2 client”

Question: How do I fix my servers and get them back to the normal ReplicaSet with no error messages? I'd offer a serious bounty, but all my points are on SO :( Details of the Problem I'm running a ...
2
votes
2answers
179 views

What happens if services like DynDNS to control failovers fails? It's probably?

In the next diagram I'm trying to have a backup web page in another datacenter and a service like DynDNS that controls failovers in SERVER A to switch to SERVER B. But, what happens if DynDNS fails? ...
4
votes
1answer
150 views

What is the best way to replicate a large number of SQL 2008 DBs to a failover instance in Amazon Web Services

Our application creates a new sql database for every customer and we will be continually adding new customers and creating new databases every day. These databases can range in size from 3 megabytes ...
3
votes
3answers
2k views

How to: Hot Standby SQL Server in another datacenter?

For our SaaS app, I want to have a system in place for a datacenter wide failure. In the main datacentre, we have two servers set up with MSSQL Database Mirroring (synchronised). This provides us ...
1
vote
6answers
2k views

Does anyone know of a free solution to perform failover for VMware ESXi? [closed]

I would like to setup a free/custom solution to perform failover for VMware ESXi. The setup is as follows: 2x Physical servers each with independent storage. For each physical server there are 2x ...
0
votes
7answers
1k views

How to replicate a windows servers (IIS,Files,ConfigurationState)?

Maybe a better question is: What is the closest competitor for DoubleTake? I am looking to replicate a windows production server in case it fails have a immediate backup. Any idead? NOTE 1: I forget ...
1
vote
4answers
306 views

What is the better way to add extra servers for reliability in our case?

We have the following servers: A. 1 x web server running MySQL (a forum). B. 1 x web server running RT with Postgres. C. 1 x web server running a home grown app with MonetDB as the backend Now of ...