[DRBD-user] DRBD 8.3.15 on RHEL5

Pankaj Kumar pankaj at cdot.in
Wed Sep 25 07:30:20 CEST 2013

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Dear Team,



I am trying to build Linux HA Cluster for DRBD Disk on 2XRHEL5.7 Servers.

Server Details as below.

OS RHEL 5.7 (64bit)

Kernel 2.6.18.274



DRBD version(8.3.15-2.el5-CentOS) installed and configured success



I am unable install/configure  heartbeat and related components.

Pls. help.



I've tried using RHCS also but in vain.



On Wed, 25 Sep 2013 01:13:54 +0200, drbd-user-request wrote

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> Today's Topics:

> 

>    1. Fwd: how to place secondary node in maintenance mode

>       (Gabriel Sosa)

>    2. Re: Fwd: how to place secondary node in maintenance mode

>       (Dan Barker)

>    3. Re: Fwd: how to place secondary node in maintenance mode

>       (Gabriel Sosa)

>    4. Adding a third node (Paul O'Rorke)

> 

> ----------------------------------------------------------------------

> 

> Message: 1

> Date: Tue, 24 Sep 2013 12:08:16 -0300

> From: Gabriel Sosa <sosagabriel at gmail.com>

> Subject: [DRBD-user] Fwd: how to place secondary node in maintenance

> 	mode

> To: drbd-user at lists.linbit.com

> Message-ID:

> 	<CABTgo4ZGqmU7bKe2NaRM1azrDov9ZBH=XkF=zqsGEa3-nUT_cw at mail.gmail.com>

> Content-Type: text/plain; charset="utf-8"

> 

> We have a pretty standard setup

> 

> MASTER <---> SLAVE (STANDBY)

> 

> both nodes are in sync without much issue now but during this week our DC

> will perform some maintenance tasks that might incur in some connectivity

> issues between both nodes.

> 

> How can put the slave node in maintenance (or any other mode) in order to

> avoid any split brain situation?

> 

> I've been reading [1] and [2] but I can't find a clear answer to this.

> 

> should I just take down the service on the SLAVE node performing a *service

> drbd stop* or instead disable the resource using *drbdadm down resourcename*

> 

> versions:

> MASTER -> version: 8.0.16 (api:86/proto:86)

> SLAVE -> version: 8.3.15 (api:88/proto:86-97)

> 

> Thanks

> 

> [1] http://www.drbd.org/users-guide/ch-admin.html

> [2] http://www.geekpeek.net/drbd-management-command-usage/

> 

> -- 

> Gabriel Sosa

> Sometimes the questions are complicated and the answers are simple. -- Dr.

> Seuss

> -------------- next part --------------

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> 

> ------------------------------

> 

> Message: 2

> Date: Tue, 24 Sep 2013 20:19:49 +0000

> From: Dan Barker <dbarker at visioncomm.net>

> Subject: Re: [DRBD-user] Fwd: how to place secondary node in

> 	maintenance mode

> To: "drbd-user at lists.linbit.com" <drbd-user at lists.linbit.com>

> Message-ID:

> 	<7d44cd4318b945dab045d56b695e201a at BN1PR04MB060.namprd04.prod.outlook.com>

> 	

> Content-Type: text/plain; charset="utf-8"

> 

> Wow! Those are some old versions!

> 

> Just ?drbdadm disconnect all? on the Primary node before the maintenance and 

> ?drbdadm connect all? afterwards. All else is magic!

> 

> Dan

> 

> From: drbd-user-bounces at lists.linbit.com [mailto:drbd-user-

> bounces at lists.linbit.com] On Behalf Of Gabriel Sosa Sent: Tuesday, September 

> 24, 2013 11:08 AM To: drbd-user at lists.linbit.com Subject: [DRBD-user] Fwd: how 

> to place secondary node in maintenance mode

> 

> We have a pretty standard setup

> MASTER <---> SLAVE (STANDBY)

> 

> both nodes are in sync without much issue now but during this week our DC will 

> perform some maintenance tasks that might incur in some connectivity issues 

> between both nodes. How can put the slave node in maintenance (or any other 

> mode) in order to avoid any split brain situation? I've been reading [1] and 

> [2] but I can't find a clear answer to this. should I just take down the 

> service on the SLAVE node performing a *service drbd stop* or instead disable 

> the resource using *drbdadm down resourcename*

> 

> versions:

> MASTER -> version: 8.0.16 (api:86/proto:86)

> SLAVE -> version: 8.3.15 (api:88/proto:86-97)

> Thanks

> 

> [1] http://www.drbd.org/users-guide/ch-admin.html

> [2] http://www.geekpeek.net/drbd-management-command-usage/

> 

> --

> Gabriel Sosa

> Sometimes the questions are complicated and the answers are simple. -- Dr. Seuss

> -------------- next part --------------

> An HTML attachment was scrubbed...

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> 

> ------------------------------

> 

> Message: 3

> Date: Tue, 24 Sep 2013 17:29:42 -0300

> From: Gabriel Sosa <sosagabriel at gmail.com>

> Subject: Re: [DRBD-user] Fwd: how to place secondary node in

> 	maintenance mode

> To: Dan Barker <dbarker at visioncomm.net>

> Cc: "drbd-user at lists.linbit.com" <drbd-user at lists.linbit.com>

> Message-ID:

> 	<CABTgo4ZWsQQWZ-xYZzFWrvx+vok_sAMrVE81u56mTzd3yvwEmQ at mail.gmail.com>

> Content-Type: text/plain; charset="utf-8"

> 

> So the slave will catch up afterwards. Excellent.

> 

> Thanks

> 

> On Tue, Sep 24, 2013 at 5:19 PM, Dan Barker <dbarker at visioncomm.net> wrote:

> 

> >  Wow! Those are some old versions!****

> >

> > ** **

> >

> > Just ?drbdadm disconnect all? on the Primary node before the maintenance

> > and ?drbdadm connect all? afterwards. All else is magic!****

> >

> > ** **

> >

> > Dan****

> >

> > ** **

> >

> > *From:* drbd-user-bounces at lists.linbit.com [mailto:

> > drbd-user-bounces at lists.linbit.com] *On Behalf Of *Gabriel Sosa

> > *Sent:* Tuesday, September 24, 2013 11:08 AM

> > *To:* drbd-user at lists.linbit.com

> > *Subject:* [DRBD-user] Fwd: how to place secondary node in maintenance

> > mode****

> >

> > ** **

> >

> > We have a pretty standard setup****

> >

> > MASTER <---> SLAVE (STANDBY)

> > ****

> >

> > ** **

> >

> > both nodes are in sync without much issue now but during this week our DC

> > will perform some maintenance tasks that might incur in some connectivity

> > issues between both nodes.****

> >

> > How can put the slave node in maintenance (or any other mode) in order to

> > avoid any split brain situation?****

> >

> > I've been reading [1] and [2] but I can't find a clear answer to this.****

> >

> > should I just take down the service on the SLAVE node performing a

> > *service drbd stop* or instead disable the resource using *drbdadm down

> > resourcename*****

> >

> > ** **

> >

> > versions:****

> >

> > MASTER -> version: 8.0.16 (api:86/proto:86)****

> >

> > SLAVE -> version: 8.3.15 (api:88/proto:86-97)****

> >

> > Thanks****

> >

> >

> > [1] http://www.drbd.org/users-guide/ch-admin.html

> > [2] http://www.geekpeek.net/drbd-management-command-usage/****

> >

> > ** **

> >

> >

> > --

> > Gabriel Sosa

> > Sometimes the questions are complicated and the answers are simple. -- Dr.

> > Seuss ** **

> >

> > _______________________________________________

> > drbd-user mailing list

> > drbd-user at lists.linbit.com

> > http://lists.linbit.com/mailman/listinfo/drbd-user

> >

> >

> 

> -- 

> Gabriel Sosa

> Sometimes the questions are complicated and the answers are simple. -- Dr.

> Seuss

> -------------- next part --------------

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> 

> ------------------------------

> 

> Message: 4

> Date: Tue, 24 Sep 2013 15:28:18 -0700

> From: Paul O'Rorke <paul at tracker-software.com>

> Subject: [DRBD-user] Adding a third node

> To: DRBD Users <drbd-user at lists.linbit.com>

> Message-ID: <52421202.2030303 at tracker-software.com>

> Content-Type: text/plain; charset=windows-1252; format=flowed

> 

> Hi all,

> 

> I have a 2 node set up with both nodes in my server room using a GB 

> Ethernet direct connection between NICs for the DRBD resources using 

> Protocol C and single primary. It's working nicely.

> 

> We want now to add a third node using probably Protocol A at an off site 

> location to be used primarily for disaster recovery should the office 

> burn to the ground...

> 

> I used a direct CAT6 connection between the first 2 nodes and I want to 

> extend that now to do exactly this: 

> http://www.drbd.org/users-guide-8.3/s-three-way-repl.html but I'm 

> struggling to find documentation on how to move forward with that given 

> I already have the "Lower Layer" in place and functional.

> 

> Any suggested reading/resources would be appreciated, I'm a little 

> concerned that I should have started out with a stacked set up in the 

> first place. Is it possible to add this to an existing set up?

> 

> Please and thanks

> 

> --

> 

> *Paul O?Rorke*

> Tracker Software Products

> paul at tracker-software.com <mailto:paul.ororke at tracker-software.com>

> 

> ------------------------------

> 

> _______________________________________________

> drbd-user mailing list

> drbd-user at lists.linbit.com

> http://lists.linbit.com/mailman/listinfo/drbd-user

> 

> End of drbd-user Digest, Vol 110, Issue 17

> ******************************************





Regards,



-pankaj kumar.

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