[Linux-HA] 8.3.7 Version Advice
Hi there list. I'm about to implement some work with DRBD but there is no posibillity to upgrade the kernel to a newer one, the installations will be performed over RHEL6 with kernel 2.6.33, so , following the table on DRBD weeb page, I try to use the kernel that matches the DRBD version. My questions is, is 8.3.7 stable enought, based on your experience, any advice about know bugs , issues? Thanks for your time and support Best Regards ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] 8.3.7 Version Advice
El 05/24/2012 08:32 PM, Lars Ellenberg escribió: On Thu, May 24, 2012 at 01:56:37PM -0300, Net Warrior wrote: Hi there list. I'm about to implement some work with DRBD but there is no posibillity to upgrade the kernel to a newer one, the installations will be performed over RHEL6 with kernel 2.6.33, so , following the table on DRBD weeb page, I try RHEL6 kernel is 2.6.32 (plus RH patches), not 33. You can build any DRBD version against that kernel, and use that. Of course we would provide you with suitable module packages, if you prefer that. to use the kernel that matches the DRBD version. My questions is, is 8.3.7 stable enought, based on your experience, any advice about know bugs , issues? As for enough, only you can decide what is good enough for you. No way to avoid to make that decision yourself. Known bugs: quite a few. See the changelog. So you are willing to build and use your own 2.6.33 on a RHEL6, but not considering using a more recent DRBD module? Why would you do that. Thanks for your answer. Ok, my bad, kernel 2.6.32, that's right. As long as I know, the module kernel was introduced from 2.6.36 and above, so, lower kernels lack the drbd device modue support, so, I undertood I could not install or build any DRBD version on those kernels. If you say that I can make any build on that kernel, ( 2.6.32 ), DRBD 8.4 included, I'll really appreciate your guidance on that, if there are any already built rpm packages, the better, just cuz you mention you can provide suitable packages :D Thanks for your time and support Best Regards ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
[Linux-HA] Error while creating various disk volumes
Hi there
Reading the documentantion I found that I can have various disk in the
configuration,
and I need to do so, this is my conf
resource myresource {
syncer {
rate 100M;
}
volume 0 {
device/dev/drbd1;
disk /dev/rootvg/lvu02;
meta-disk /dev/rootvg/drbdmetadata[0];
}
volume 1 {
device/dev/drbd2;
disk /dev/rootvg/lvarch;
meta-disk /dev/rootvg/drbdmetadata[0];
}
on node1 {
address x.x.x.x:7789;
}
on node2 {
address x.x.x.x:7789;
}
}
When creating the resource I get the following error
drbd.d/myresource.res:7: Parse error: 'protocol | on | disk | net | syncer
| startup | handlers | ignore-on | stacked-on-top-of' expected,
but got 'volume' (TK 281)
Im using this version
drbd83-8.3.8-1.el4_8
**
Any help on this?
Thanks you very much for your time and support
Regards
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Re: [Linux-HA] Error while creating various disk volumes
Thank you very much!, very kind of you.
I had to configure two resources to accomplish thehe same.
Regards
2012/5/22 Andreas Kurz andr...@hastexo.com
On 05/22/2012 02:12 PM, Net Warrior wrote:
Hi there
Reading the documentantion I found that I can have various disk in the
configuration,
and I need to do so, this is my conf
resource myresource {
syncer {
rate 100M;
}
volume 0 {
device/dev/drbd1;
disk /dev/rootvg/lvu02;
meta-disk /dev/rootvg/drbdmetadata[0];
}
volume 1 {
device/dev/drbd2;
disk /dev/rootvg/lvarch;
meta-disk /dev/rootvg/drbdmetadata[0];
}
on node1 {
address x.x.x.x:7789;
}
on node2 {
address x.x.x.x:7789;
}
}
When creating the resource I get the following error
drbd.d/myresource.res:7: Parse error: 'protocol | on | disk | net |
syncer
| startup | handlers | ignore-on | stacked-on-top-of' expected,
but got 'volume' (TK 281)
this is a DRBD 8.4 feature
Im using this version
drbd83-8.3.8-1.el4_8
**
Any help on this?
Please read the DRBD users guide for version 8.3 and _not_ 8.4 ...
http://www.drbd.org/users-guide-8.3/
Regards,
Andreas
--
Need help with Pacemaker?
http://www.hastexo.com/now
Thanks you very much for your time and support
Regards
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Re: [Linux-HA] DRBD Concept Doubt
El 05/20/2012 10:28 AM, David Coulson escribió:
What is your clustering software and what is the configuration? Also
post your DRBD configuration and the output from cat /proc/drbd during
each stage of your testing which reproduces the issue.
Maybe post some kernel logs too would be helpful. Simply switching
pri/sec on DRBD won't cause a node to go outdated, unless you split
brain the environment.
David
On 5/20/12 9:25 AM, Net Warrior wrote:
Hi there list!
I've got a doubt regariding DRBD usage, at the moment I'm trying to
implement a HA systems with two nodes, is a easy and basic setup
Two servers, running oracle and LVM.
I configured once resource lest's say /dev/rootvg/myoracle-device on
both, this is working fine, I can perform a manual failover as follow
drdbadm secondary node1
umount /dev/drbd1
drdbadm primary node2
mount /dev/drbd1
This works fine and I have both serer sincronized, my problem or doubt
is, when the other node fails,lets say, I power it off, the node2 takes
primary
role, I do it manually, but I have the information Outdated and I loose
lots of information and I have to wait till node1 comes up to syncronize
with it.
So, does DRBD work like that? I thought DRBD was syncronizing in
backround to the other node to have both nodes with the same
information, PLEASE,
correct me if I'm wrong, cuz maybe this solution in not well implemented
configured or I missunderstood what'd DRBD is for.
Thanks for your time and support
Best regards
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Sorry, but there was a configuration issue, now I'm able to syncronize,
anyway I've have some question and I'd like to share my configuration
with you.
This is what I've got
resource myresource {
syncer {
rate 100M;
}
on node1 {
device/dev/drbd1;
disk /dev/rootvg/lv01;
address x.x.x.x:7789;
meta-disk /dev/rootvg/drbdmetadata[0];
}
on node2 {
device/dev/drbd1;
disk /dev/rootvg/lv01;
address x.x.x.x:7789;
meta-disk /dev/rootvg/drbdmetadata[0];
}
}
Cuz I did not want to play expanding the LV and loose the data I have on
it I just created another LV to store the metadada on it
/dev/rootvg/drbdmetadata
which is 512 MB in size.
I was able to perform a manual failover without data loss and I'm happy
with that, now I'd like to add another Logical Volume and now my 2
questions are
1 - Should I add the other LV to my config and restart or do I have to
make again a drbdadm create myresource ?
2 - Is drbdmetadata related to my LV size? any considerations on this
regarding it's size?
Thanks for your time and support
Best Regards
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[Linux-HA] DRBD Concept Doubt
Hi there list! I've got a doubt regariding DRBD usage, at the moment I'm trying to implement a HA systems with two nodes, is a easy and basic setup Two servers, running oracle and LVM. I configured once resource lest's say /dev/rootvg/myoracle-device on both, this is working fine, I can perform a manual failover as follow drdbadm secondary node1 umount /dev/drbd1 drdbadm primary node2 mount /dev/drbd1 This works fine and I have both serer sincronized, my problem or doubt is, when the other node fails,lets say, I power it off, the node2 takes primary role, I do it manually, but I have the information Outdated and I loose lots of information and I have to wait till node1 comes up to syncronize with it. So, does DRBD work like that? I thought DRBD was syncronizing in backround to the other node to have both nodes with the same information, PLEASE, correct me if I'm wrong, cuz maybe this solution in not well implemented configured or I missunderstood what'd DRBD is for. Thanks for your time and support Best regards ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] Heartbeat Failover Configuration Question
Hi Nikita This is the version heartbeat-3.0.0-0.7 My aim is to, if node1 is powered off or losts it's ethernet connection,. node2 wont make the failover automatically, I want to make it manually, but could not find how to accomplish that. Thanks for your time and support Best regards 2012/4/23, Nikita Michalko michalko.sys...@a-i-p.com: Hi, Net Warrior! What version of HA/Pacemaker do you use? Did you already RTFM - e.g. http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained - or: http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Clusters_from_Scratch HTH Nikita Michalko Am Montag, 23. April 2012 02:23:20 schrieb Net Warrior: Hi There I configured heartbeat to failover an IP address , if I for example shutdown one node, the other takes it's ip address, so far so good, now my doubt is if there is a way to configure it not to make the failover automatically and have someone run the failover manually, can you provide any configuration example please? is this stanza the one that does the magic? auto_failback on Thanks for your time and support Best regards ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
Re: [Linux-HA] Heartbeat Failover Configuration Question
True, but even on the most expensive software likve Veritas Cluster or Red Hat Cluster I can configure how I want to failover the resources ( auto or manual ), that's why my curiosity to acomplish the same in here. Thanks for your time Best Regards 2012/4/23, David Coulson da...@davidcoulson.net: Why even use heartbeat then - Just manually ifconfig the interface. On 4/23/12 7:39 AM, Net Warrior wrote: Hi Nikita This is the version heartbeat-3.0.0-0.7 My aim is to, if node1 is powered off or losts it's ethernet connection,. node2 wont make the failover automatically, I want to make it manually, but could not find how to accomplish that. Thanks for your time and support Best regards 2012/4/23, Nikita Michalkomichalko.sys...@a-i-p.com: Hi, Net Warrior! What version of HA/Pacemaker do you use? Did you already RTFM - e.g. http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained - or: http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Clusters_from_Scratch HTH Nikita Michalko Am Montag, 23. April 2012 02:23:20 schrieb Net Warrior: Hi There I configured heartbeat to failover an IP address , if I for example shutdown one node, the other takes it's ip address, so far so good, now my doubt is if there is a way to configure it not to make the failover automatically and have someone run the failover manually, can you provide any configuration example please? is this stanza the one that does the magic? auto_failback on Thanks for your time and support Best regards ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
[Linux-HA] Heartbeat Failover Configuration Question
Hi There I configured heartbeat to failover an IP address , if I for example shutdown one node, the other takes it's ip address, so far so good, now my doubt is if there is a way to configure it not to make the failover automatically and have someone run the failover manually, can you provide any configuration example please? is this stanza the one that does the magic? auto_failback on Thanks for your time and support Best regards ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems
