NTP configuration in HDR environment

Posted in 2010

Summary

Sridip Bhattacharya, on IDS 11.50.FC6 with DRAUTO 2, planned to reconfigure NTP on HDR primary and secondary by stopping both, changing NTP, restarting, then running onmode -d. Amitava Chakraborty and Madison Pruet said the onmode -d steps should not be needed. Paul Watson advised stepping the clock to sync with the NTP server, then starting ntp and letting drift settle.

Auto-generated by Claude from the posts below — may be imperfect; read the full thread.

Topics: High Availability & Replication, Server Administration

SRIDIP BHATTACHARYA — Tue, 19 Oct 2010 07:17:07 — source: IIUG Forums & Mailing Lists

Hi, I want to reconfigure NTP service in the HDR primary & secondary server. Please guide me with the steps. As per my logic: 1. Stop secondary. 2. Stop primary. 3. NTP conf in primary & secondary servers. 4. Start primary. 5. Start secondary. 6. onmode -d primary <secondary> in primary 7. onmode -d secondary <primary> in secondary. Please confirm if I am doing right. Regards, SB

↪ replying to SRIDIP BHATTACHARYA

Amitava Chakraborty — Tue, 19 Oct 2010 07:24:23 — source: IIUG Forums & Mailing Lists

What is your IDS version? What is the Value of DR AUTO ? Step 6 and Step 7 will not be required as per my knowledge. Thanks Amitava "SRIDIP BHATTACHARYA" <sridip@gmail.com> Sent by: ids-bounces@iiug.org 10/19/2010 12:47 PM Please respond to ids@iiug.org To ids@iiug.org cc Subject NTP configuration in HDR environment [21748] Hi, I want to reconfigure NTP service in the HDR primary & secondary server. Please guide me with the steps. As per my logic: 1. Stop secondary. 2. Stop primary. 3. NTP conf in primary & secondary servers. 4. Start primary. 5. Start secondary. 6. onmode -d primary <secondary> in primary 7. onmode -d secondary <primary> in secondary. Please confirm if I am doing right. Regards, SB ******************************************************************************* Forum Note: Use "Reply" to post a response in the discussion forum.

↪ replying to Amitava Chakraborty

SRIDIP BHATTACHARYA — Tue, 19 Oct 2010 08:02:16 — source: IIUG Forums & Mailing Lists

Thanks for the response. Here we are using IDS 11.5 (update 6) i.e., IBM Informix Dynamic Server Version 11.50.FC6WE. And the DRAUTO is set to 2. Regards, Sridip

↪ replying to SRIDIP BHATTACHARYA

Madison Pruet — Tue, 19 Oct 2010 15:17:01 — source: IIUG Forums & Mailing Lists

I suspect that the only thing you'd be wise to do is to bring the two servers down while installing NTP and then bring them back up. I don't think that steps 6 and 7 are needed. From: "SRIDIP BHATTACHARYA" <sridip@gmail.com> To: ids@iiug.org Date: 10/19/2010 01:17 AM Subject: NTP configuration in HDR environment [21748] Sent by: ids-bounces@iiug.org Hi, I want to reconfigure NTP service in the HDR primary & secondary server. Please guide me with the steps. As per my logic: 1. Stop secondary. 2. Stop primary. 3. NTP conf in primary & secondary servers. 4. Start primary. 5. Start secondary. 6. onmode -d primary <secondary> in primary 7. onmode -d secondary <primary> in secondary. Please confirm if I am doing right. Regards, SB ******************************************************************************* Forum Note: Use "Reply" to post a response in the discussion forum.

↪ replying to Madison Pruet

Paul Watson — Tue, 19 Oct 2010 15:26:29 — source: IIUG Forums & Mailing Lists

Assuming they are in the same timezone, then use the standard date to apply a delta and get the machine in sync with the ntp server, then just start ntp - it just works. The key is to let the machine times drift to a sync. Cheers Paul > I suspect that the only thing you'd be wise to do is to bring the two > servers down while installing NTP and then bring them back up. I don't > think that steps 6 and 7 are needed. > > From: "SRIDIP BHATTACHARYA" <sridip@gmail.com> > > To: ids@iiug.org > > Date: 10/19/2010 01:17 AM > > Subject: NTP configuration in HDR environment [21748] > > Sent by: ids-bounces@iiug.org > > Hi, > > I want to reconfigure NTP service in the HDR primary & secondary server. > > Please guide me with the steps. As per my logic: > > 1. Stop secondary. > 2. Stop primary. > 3. NTP conf in primary & secondary servers. > 4. Start primary. > 5. Start secondary. > 6. onmode -d primary <secondary> in primary > 7. onmode -d secondary <primary> in secondary. > > Please confirm if I am doing right. > > Regards, > SB > > > ******************************************************************************* > > Forum Note: Use "Reply" to post a response in the discussion forum. > > > ******************************************************************************* > Forum Note: Use "Reply" to post a response in the discussion forum. > -- Paul Watson Tel: +1 913-674-0360 Mob: +1 913-387-7529 Web: www.oninit.com www.advancedatatools.com Failure is not as frightening as regret. If you want to improve, be content to be thought foolish and stupid.

Glossary

HDR
onmode