Axton:
This would require a reboot for most UNIXes.
I still like the idea of a load balancer on the front end feeding to two different ARS servers configured for database sharing. This makes the load balancer responsible when the primary fails. Of course, this depends on where the servers are located.
James McKenzie
________________________________
From: Action Request System discussion list(ARSList) [mailto:[email protected]] On Behalf Of Axton
Sent: Thursday, October 12, 2006 11:47 AM
To: [email protected]
Subject: Re: How to switch DB Server
**
Instead of using DNS to repoint traffic to the backup host, you can disable the ip on the primary node, then reassign the ip to the backup node. Only delay will the the arp requests in this scenario. Multiple ip's can be assigned to both hosts to ensure the machines stay network accessible:
During normal operation (primary active):
hostA (primary):
trunk0: 10.1.1.100, 10.1.1.101
hostB (backup):
trunk0: 10.1.1.111
During failover operation (backup active):
hostA (primary):
trunk0: 10.1.1.101
hostB (backup):
trunk0: 10.1.1.100, 10.1.1.111
Your DNS would then have an A record for the following:
remedy.company.com -> 10.1.1.100
remedy_primary.company.com -> 10.1.1.101
remedy_backup.company.com -> 10.1.1.111
Your users would simply log in to remedy.company.com, regardless of which node is active.
To access the servers using other tools (ssh, sftp, telnet, etc), you can use the other hostnames (e.g., remedy_primary).
Axton Grams
On 10/12/06, McKenzie, James J C-E LCMC HQISEC/L3 <[EMAIL PROTECTED]> wrote:
**
Have you looked at Hot Backup licenses?
Also, you will have to force a DNS update that may take hours, depending on DNS aging and how you setup your internal network.
James McKenzie
L-3 GSI
________________________________
From: Action Request System discussion list(ARSList) [mailto:[email protected] ] On Behalf Of Bellamkonda Viswa Chaitanya
Sent: Thursday, October 12, 2006 11:08 AM
To: [email protected]
Subject: How to switch DB Server
**
Hello List,
We have Remedy Servers installed on 2 separate boxes and have identical setup. Incase of fail over of Server1 We would like to Switch Server2 to the Server1's Database. Can someone please suggest the best way to do implement this switching with minimal down time.
Thanks in advance.
-Viswa
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