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List of possible causes for cluster node fail-over?

list of possible causes for cluster node fail-over? (I am looking for answer in regards to RHEL clusters) automatic cluster node fail-over manual cluster fail-over I'm new in clustering I want to ...
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30 views

Server 2012 R2 - Sharing 'cluster shared volume' .VHDX hard drives between two VMs, are they supposed to not live update?

I have a .VHDX volume that's a cluster shared volume in a Server 2012 R2 failover cluster. I'm able to share the hard drive between two VMs. If I create a folder on VM2, it doesn't show in VM1 in the ...
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14 views

Schedule the cPanel Transfer Tool

I'd like to schedule the transfer tool from cPanel, i'd like to do this daily to keep things synced with a failover backup server, identical to the first. I am looking at https://documentation.cpanel....
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1answer
25 views

Move from keepalived to HAProxy

I have four web server under two keepalived load balance server, so I can be sure that the active keepalived server will load balance the traffic on my four web servers, and when it fails the passive ...
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1answer
903 views

DNS load balancing with multiple IPs on the same domain in GoDaddy

Looking for a cheaper solution than amazon CloudFront, I placed two "A" records with different IPs to different servers on the same subdomain in a NameSever managed by GoDaddy in order to achieve some ...
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Failover - folder

Basically I have an application that outputs data to a folder provided as a startup parameter: app -o /path/to/folder The app opens/creates necessary files on startup and then writes to them. The ...
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185 views

Execute script on failover Corosync Pacemaker

I'm searching to execute script on failover with Corosync Pacemaker. I use Centos 7 with pcs, I have 2 server master and slave. I used a copy of Dummy script and this is my code; <shortdesc lang=...
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22 views

failover for a process that must run once on any one of multiple nodes

I am looking for a way to have single process run once on any of multiple nodes. should a node become unavailable, the process should be started on one of the other nodes. Example: Node 0: process X ...
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137 views

pacemaker: Restart clone resource when a regular resource moves

I have a resource A that needs to run on both cluster nodes, so it's set up as a clone set. I also have a resource B that should only run on one node. It's set up as a master/slave set. But A runs ...
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21 views

Syncronize /etc directory between two debian servers

I have two identical debian servers, which I want to keep in sync in order to switch to the 2nd in case of failure of the 1st. I'm going to sync installed debian packages, data directories, mysql (...
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2answers
60 views

Internet failover strategy while hosting services with a staticip

Given you have two networks with statics ips: network A.) 66.xxx.xxx.9 (to reach this network DNS entry is myservice.mydomain.com) and network B.) 66.xxx.xxx.29 ((to reach this network DNS entry ...
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25 views

Building failsafe system

As an assignment I have to realize failsafe webserver using Virtual machine. I have been trying it using a separate java program on host to monitor heartbeat of the vm and redirecting the http ...
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3answers
127 views

Why is UPS technology unreliable? [closed]

Following the UPS issue at SO today I recall my experiences with UPS (uninteruptable power supply) systems in the work place. Typically we would arrive at work in the morning and find all systems ...
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3answers
16k views

Failover two IP addresses and one DNS record

My mail server has two WAN interfaces and I need to set up one DNS A record for my Exchange clients. In case of connection failure of one interface I wish to use the other interface, but how to set up ...
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1answer
171 views

Can a consumer-level (i.e. cheap) UPS trigger a custom script on power failure on Linux?

I am essentially trying to build is a poor mans server failover solution. The non-profit organization I am part of is planning to host several web applications. In order to save on hosting costs we ...
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1answer
1k views

CentOS DHCP server failover won't give out leases

I have followed this tutorial: http://www.madboa.com/geek/dhcp-failover/ However, I can not seem to get a lease at my windows client. I have set both servers (CentOS 6.2) in virtual machines, ...
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1answer
75 views

Can NAT capable modem/router be linked for failover?

There are a total of 7 systems on the network. The network has evolved from two small shops (3-4 computers each) to a single one with a sum total of 7 systems. Historically there were two ISP (which ...
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1answer
559 views

Software load balancing fail-over vs hardware [closed]

Please correct me, but my understanding is that with software load balancing a service must be run on each server while there is one DS that notifies the other servers that a server has gone down and ...
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73 views

ADSL Connections

Can you have two ADSL connections on a single phone line? Or by law of IT, do two Broadband connections require two separate phone lines and BT master sockets?