Reboot unix for network interface changes? I don't think so. This is how Veritas VCS works for hot backup configurations; though it does a little more as well (moun/unmount storage, etc.).
Axton On 10/12/06, McKenzie, James J C-E LCMC HQISEC/L3 <[EMAIL PROTECTED]> wrote:
** 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 DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or HCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any mail and attachments please check them for viruses and defect. ----------------------------------------------------------------------------------------------------------------------- __20060125_______________________This posting was submitted with HTML in it___ __20060125_______________________This posting was submitted with HTML in it___ __20060125_______________________This posting was submitted with HTML in it___ __20060125_______________________This posting was submitted with HTML in it___
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