PS. sorry, it's the resource-agents rpm, not EPEL, so keep in mind
redhat may update it and overwrite your custom build if you're not careful.
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On 2015-04-03 17:03, Lars Ellenberg wrote:
You can use heartbeat 3.0.6 (if you only use haresources mode).
You can google for ticket # but basically epel heartbeat maintainer
replied to my rfa with I don't use heartbeat anymore so no. I meant to
post that here but forgot.
So there is no
On 02/10/2015 03:24 PM, Lars Ellenberg wrote:
...
After 3½ years since the last officially tagged release of Heartbeat,
I have seen the need to do a new maintenance release.
Yay! Thank you Lars.
- heartbeat.service file for systemd platforms
RFA submitted to EPEL-7.
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the latter, I think you want pacemaker, not heartbeat. Dunno what
pacemaker might have for monitoring an IB connection, with heartbeat R1
I'd do something like grep for LinkUp in the output of ibstat.
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! replicated iscsi
block device, so ...
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shine on top of a 10Gb network. Or
better, three 10Gb networks. DRBD works just fine over a crossover piece
of cat-5e.
Again, my understanding only, I could be wrong.
Oh, it's a pure speculation on my part. Any resemblance to the actual
RedHat is purely coincidental and all that. ;)
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On 09/04/2014 09:23 AM, Ulrich Windl wrote:
2) You can use an IP address as interface for -I
3), but you cannot use a hostname (resolving to the same IP address as in 2)):
ping: unknown iface hostname
Uhmm... ping -I `host hostname | awk '{print $NF;}'` ?
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scripts, use new corosync/pacemaker
hotness instead of old and busted heartbeat/haresources.
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, please provide a counter-example
to prove (in mathematical sense) they're full of it. I promise I won't
feel slighted.
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On 06/02/2014 03:42 PM, Jay G. Scott wrote:
On Thu, May 29, 2014 at 12:43:49PM -0500, Dimitri Maziuk wrote:
What do you intend to run in HA mode?
3. bind/named/dns, possible some fortran programs.
Uhmm... why not just run 2 nameservers?
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.
What do you intend to run in HA mode?
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. Not
sure what RH is doing with their channels this week, so... presumably
yum list \*pace\* should work?
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On 01/23/2014 11:14 AM, Christian Richter wrote:
Hello,
i'm looking for the right way to integrate postfix in my 2 node cluster.
The right way is don't. Read e.g.
http://serverfault.com/questions/303554/how-to-build-a-high-availability-postfix-system
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On 1/4/2014 10:39 AM, Lars Marowsky-Bree wrote:
On 2014-01-03T20:56:42, Digimer li...@alteeve.ca wrote:
causing a lot of reinvention of the wheel. In the last 5~6 years, both teams
have been working hard to unify under one common open-source HA stack.
Pacemaker + corosync v2+ is the result of
-effect of RedHat going all entrerprisey with
OpenStack (RDO) and having to bite the pacemaker bullet as a result. I'm
told heartbeat resource scripts have been just wrappers around
pacemaker's resource-agents for some time -- but RedHat's packages
haven't been touched in years. Until now.
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On 2013-11-27 20:15, Jefferson Ogata wrote:
It's nicer, however, when Red Hat takes a conservative position with the
Tech Preview. They could have shipped a minimal set of resource agents
in the first place, so people would have a better idea what they had to
provide on their own end, instead
if I
wait just a little bit longer I can upgrade to ceph and openstack -- or
retire, whichever comes first ;)
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On 11/27/2013 06:29 PM, Jefferson Ogata wrote:
On 2013-11-28 00:12, Dimitri Maziuk wrote:
Hey, upgrading to pacemaker wouldn't necessarily help. Red Hat broke
that last month by dropping most of the resource agents they'd initially
shipped. (Don't you love Technology Previews?)
Dunn about
6.4)
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.
Analogy: don't build a skyscraper, do a log cabin.
If you have to do 2.1.4, use haresources mode. You'll need to do your
own monitoring (use mon).
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On 06/12/2013 05:27 PM, Andrew Beekhof wrote:
Yes, but haresources doesn't support the master/slave concept does it.
So not very good advice.
You could argue master+slave is the only concept it does support.
;)
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On 05/03/2013 12:24 AM, Ulrich Windl wrote:
I wonder how they could fly to the moon without XML ;-)
They couldn't. That's why they had to film the whole thing on a sekret
base in Arizona.
Kids these days...
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) pings going over the
crossover cable as well, so I don't specifically monitor that link or
drbd status. I do monitor eth0 (for 'link detected' in the output of
ethtool).
I also have nagios checking drbd for UpToDate/UpToDate, but that's not
part of the cluster.
HTH
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On 3/14/2013 11:15 AM, Alberto Alonso wrote:
That's what I thought. The emails from 2009 seemed to indicate
that it was possible to run multiple instances.
I've always had difficulties with the concept: the way I see it if your
hardware fails you want *all* your 200+ services moved. If you
200 services independently sounds
like a new project.
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are crashing all the time during
normal operation. If I needed a solution for that, HA would be fairly
low on my list of things to look at.
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to
know. ;-)
(I'd still argue that a full vm solution should have less maintenance
overhead in the long run -- or at least it looks that way now.)
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anything that can deal with i/o. I recently spent a
couple of weeks poking at ceph, it doesn't live up to the sales brochure
either... I expect if you can roll out a dedicated 10GBe network for
your iscsis you might get usable i/o speeds. :(
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On 3/14/2013 9:44 AM, GGS (linux ha) wrote:
... I always laugh when people talk
about having hundreds or thousands of servers, because
switching to a stack model and proper utilization
of hardware resources can save a ton of money.
The flip side is when caps on the mobo go dry you lose
(default)[1960]: info: Running
/etc/ha.d/resource.d/IPaddr 144.92.167.233 start
...
15:53:52 cuttlefish
/usr/lib/ocf/resource.d//heartbeat/IPaddr(IPaddr_144.92.167.233)[2267]:
INFO: Success
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On 1/22/2013 10:31 PM, Digimer wrote:
A stray iptables rule would knock you out without dropping the link layer.
Presumably it wasn't there when you configured, tested, and burned in
the node.
Tie-breaker ain't gonna help with gremlins living in the cluster,
self-modifying firewalls, or
On 1/22/2013 7:39 PM, David Lang wrote:
I've also had network connectivity restored (switch got rebooted,
someone noticed a loose cable and plugged it in, etc)
What I would do would be to look into defining a ping node that could be
used as the tie-breaker (but that ping node needs to be HA
On 1/20/2013 7:09 PM, Alex Sudakar wrote:
I'm setting up a very basic two-node active/passive cluster using
Pacemaker 1.1.7 and Corosync 1.4.1 under Red Hat Enterprise Linux 6.3.
The cluster is running a web application that needs to be accessed by
our separate LAN of desktops.
With only
On 12/26/2012 10:17 PM, Miles Fidelman wrote:
Does this make sense, or is it totally crazy?
Simple stupid is usually the best. Twisty maze of little layers of
indirection tends to be fragile and unmaintainable.
Over here 95% of downtime is caused by maintenance reboots (kernel/libc
upgrades)
On 12/20/2012 2:31 PM, Lars Marowsky-Bree wrote:
On 2012-12-20T10:50:11, Dimitri Maziuk dmaz...@bmrb.wisc.edu wrote:
Well, they'll be wrong unless there's a way nfs-export an unmounted
filesystem. A reasonable question would be why not symlink mount point
- export point ;)
That'd miss
On 12/20/2012 1:55 AM, Ulrich Windl wrote:
Lars Marowsky-Bree l...@suse.com schrieb am 19.12.2012 um 18:29 in
Nachricht
20121219172929.gg29...@suse.de:
On 2012-12-19T10:59:12, Ulrich Windl ulrich.wi...@rz.uni-regensburg.de
wrote:
Unfortunately there was an update to SLES11 SP2 release
, but ISTR there were problems with using the same
interface for drbd and pacemaker. You're not doing that by any chance?
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ordering a full stop. But in the latter case you could
probably find the stop action in the RA and replace it with (e.g.)
logger 'AIE ***I did not want this***' and then see what gets logged.
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On 12/03/2012 12:03 PM, Rodrigo Abrantes Antunes wrote:
Simple setup: put it all on one filesystem and put that on DRBD. See
http://www.drbd.org/users-guide-8.3/s-heartbeat-r1.html[1]
Also recommended: drbdlinks.
HTH
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as part of the process,
but that takes extra hardware.
I was thinking about rsync trought heartbeat's network interface to
sincronize them too, without drbd, what do you think?
Drbd is easier and safer.
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.
HTH
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: a copyright lawyer.
IMO
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can go a lot with a few lines of perl to
make sure you don't get double the e-mail.
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On 11/15/2012 02:03 PM, Dimitri Maziuk wrote:
Apologies for bad cun-n-paste:
Where'd security products come from? Do you mean you nagios+mysql
setup is doing some sort of security monitoring? The good thing about
heartbeat is it's not being developed anymore. So what you've learned
about
,
all there is is localhost and localhost6. (And I think RHEL5 install
scripts may or may not put it there dep. on the install mode: DVD vs
netboot or something.)
*Using the hostname* is against best practices. Reading it from
/etc/hosts is an automatic F on unix network programming.
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and phase of the moon.
None of my RH6 machines have the hostname in /etc/hosts
anymore anyway, all there is is localhost and localhost6.
(And I think RHEL5 install scripts may or may not put it
there dep. on the install mode: DVD vs netboot or something.)
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I only have 30
On 11/14/2012 11:56 AM, Dimitri Maziuk wrote:
I have 29 centos 6 servers and workstations and none of them has it.
They're all a) installed off netinst, b) had valid dns records for their
ips at install time, and c) I run system-config-network first thing
(after 'selinux off' + reboot
owners/operators but in surprisingly
many respects aren't).
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to wonder if the cause of problem is your systems are bogged
down by iowait resulting from all that logging and are e.g. dropping
packets.
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crm mode. The difference now is that
haresources option is much harder to find.
So we don't know what OP's doing and why. Again the right answer here
is not seriously.
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PS. but for the most part, like you said: you *have* people stuck on
2.1.4 and you keep supporting them much as you hate it. I don't think OP
had any indication of it being a new deployment or an old system they're
stuck with, so, yes. Seriously.
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On 10/24/2012 02:22 PM, Lars Marowsky-Bree wrote:
On 2012-10-24T13:23:09, Dimitri Maziuk dmaz...@bmrb.wisc.edu wrote:
PS. but for the most part, like you said: you *have* people stuck on
2.1.4 and you keep supporting them much as you hate it.
Yes, but on SLES10, that was an actually
will be in production phase until 2017. People will be stuck with
2.1.4 until 2017. Get used to it already.
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be sure your service will
start on the recently upgraded node with the old data version.
I think if your requirements are zero downtime and a database engine
that's not compatible with itself, your only option is to not upgrade.
Otherwise one or the other has to go.
HTH
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and obscure variables in them is one
of the reasons I'm sticking to heartbeat-r1 in the first place.
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here too.
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is for when ldirectord is too hard.
One is for when multiple servers won't all reply at once because only
one of them is visible to the reachable network, the other has a fixed
rule that decides which server answers which clients.
And so on.
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another ip address is added to the
system. So once your ip's migrated you need to restart apache (kill -HUP
may do it, I'm not sure).
In general if you want to do that you also want to clone the ip --
currently being discussed in the other thread, take a look.
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.)
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See also
scenario easily.
Me too, only s/most/all/.
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On 08/20/2012 04:19 PM, Yount, William D wrote:
No ideas?
You lost me at I would like the IP address to run on both servers at
the same time -- IME pacemaker not letting you do that is a feature.
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really help you there.
I don't understand how it could be called an Active/Active cluster
if you aren't allowed to run the IP address on two servers at once.
You are not allowed to run the IP address on two servers at once, full
stop. Complain to Rob Kahn and Vint Cerf.
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On 8/20/2012 7:32 PM, Andrew Beekhof wrote:
On Tue, Aug 21, 2012 at 8:49 AM, Dimitri Maziuk dmaz...@bmrb.wisc.edu wrote:
You are not allowed to run the IP address on two servers at once, full
stop. Complain to Rob Kahn and Vint Cerf.
Thats not strictly true.
In the same way it's
are running inside messing with software installs and configs, then of
course you don't want autostart.
- If your main concern is hardware failure and main reason for reboot: a
manual os update, then you probably want autostart.
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?
If you're on 3.x why not use ceph and ditch the whole drbd/pacemaker
thing altogether? It can't be worse than ext3 on dual-primary drbd using
haresources mode.
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at the switch and let it sit until someone comes in to
kick it. Assuming you don't have multiple redundant NICs, you do have
the someone, and so on and so forth.
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On 7/20/2012 4:42 AM, Caspar Smit wrote:
Hi Dimitri,
I got some test results for you.
I built the setup as described (two servers with LSI 9200-8e cards,
One Supermicro 847E26-RJBOD1, connected expander 1 to server 1 and
expander 2 to server 2).
When I plug in a SAS disk both servers see
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
dj mko...@gmail.com wrote:
Greetings!
I am new to setting up Linux Clusters. I am setting up a two node HA
cluster (RHEL 5.8) for Postgres. We like to have NFS
mount fail over from node 1 to 2.
My understanding is that DRBD needs shared DISK we
?
In my R1 clusters I have a mon script that greps for link detected:
yes in the output of ethtool. Obviously, if both go off (e.g. the
switch loses power), that's gonna screw things up, but then I'll have
bigger problems anyway.
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On 5/20/2012 7:54 AM, Willi Fehler wrote:
Hi all,
I would like to upgrade my cluster to DRBD-8.4.1. Currently my cluster
is using DRBD-8.3.12 on CentOS-6.2.
FWIW I've been using 8.4.0 from ATrpms for a while now without problems.
Never tried upgrading a live cluster from 8.3 to 8.4, though.
On 05/09/2012 07:07 AM, Dejan Muhamedagic wrote:
Hi,
On Wed, May 02, 2012 at 06:25:55PM -0500, Dimitri Maziuk wrote:
[heartbeat] doesn't seem to run that particular script: it starts
pure_uploadscript from resource.d and mon from init.d, but not the one
in between. What's weird is I now
now have it happening on 2 clusters:
centos 5 w/ heartbeat 2.1.4, and centos 6 w/ heartbeat 3.0.4. The only
common thing is bacula version: 5.
Any ideas?
TIA
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.)
(I can't be more specific because I'm using R1 configs here, not crm.)
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on one node at a time. That one's simple: use drbdlinks to
keep everything incl. /etc/samba on the drbd filesystem and fire up smbd
and nmbd after drbdlinks -- pretty much like any other daemon backed by
drbd storage.
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on failover.)
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On 04/06/2012 06:15 AM, Dejan Muhamedagic wrote:
On Thu, Apr 05, 2012 at 11:54:44AM -0500, Dimitri Maziuk wrote:
How well the server is performing implies that it's up and running, so
it's a valid test -- in the same sense that counting ice cubes in the
freezer compartment is a valid test
On 3/17/2012 7:06 AM, Charles Williams wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
Hey all,
I have been looking all over for a way to do this and have yet to find
anything.
I have a symlink resource that links an nfs share to /var/spool/cron
(/var/spool/cron -
to my satisfaction.
That may be true if you offer only completely stateless services over
UDP on the cluster IP address. Or running some interesting network stack
on top of IP. According to my (admittedly fading) memory of networking
101 TCP-based services don't quite work that way.
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/passive on 5 nodes?
As far as rsync goes, the difference is between rsync x rsync://foo/x
and for i in foo bar baz ; do rsync x rsync://${i}/x ; done -- i.e. a
non-issue really.
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address. Now I'm trying to find a
way to run this app in my cluster. So far, I'm not seeing an RA already
set up to do this.
Why not make it static? I think you might even be able to exclude them
from dynamic pool via /proc/sys/net/ipv4, but don't quote me on this.
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On 01/27/2012 02:48 PM, David Gersic wrote:
On 1/27/2012 at 02:37 PM, Dimitri Maziuk dmaz...@bmrb.wisc.edu wrote:
Why not make it static?
Yeah, I could, but I didn't want to. I wanted to make it part of the
resource group so it'll even be there if I add a new cluster node and
move
forever. If you're seeing that
with active/active, then either your other node isn't really active or
routing's messed up or something else's broken.
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is although
SMTP RFCs start with reliable and efficiently, e-mail delivery has
always been best effort -- so I would not build a business plan on the
assumption that e-mail is or will ever be reliable.
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for online sales and product
delivery so our solution - what ever it be - must allow for one location to
completely lose power and still deliver client emails.
One solution is called backup generator and a big fuel tank. Another
one is called gmail.
HTH
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of 'Linux-HA' spells
Solaris.
I actually know how to build gnuware on solaris, so if my employer told
me to do that I'd first try to talk them out of it. And if that failed,
I'd seriously consider changing jobs.
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Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http
will be forwarded from the public static IP 62.2.208.170 to
the IP 10.0.0.3
so what else coud the problem?
Did it work when 10.0.0.1 was up? Does it work from 10.0.0.1 now?
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Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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On 12/13/2011 12:48 PM, Elvis Altherr wrote:
Am 13.12.2011 19:05, schrieb Dimitri Maziuk:
On 12/13/2011 09:38 AM, Elvis Altherr wrote:
Node 10.0.0.2 takes over the ressources and reserves the virtual IP 10.0.0.3
now if i access the Website from external (p.a. via office) i't dosen't work
i
On 12/13/2011 01:45 PM, Elvis Altherr wrote:
ok i will check.. but i think this ins't the problem cause if a do a
portforwarding (NAT) to the webserver (mail2 = Node1) it works fine
Try this, then:
http://lists.linux-ha.org/pipermail/linux-ha/2008-March/031612.html
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Dimitri Maziuk
On 11/30/2011 2:01 AM, Ulrich Windl wrote:
Dimitri Maziukdmaz...@bmrb.wisc.edu schrieb am 29.11.2011 um 19:36 in
Nachricht4ed52637.9080...@bmrb.wisc.edu:
On 11/29/2011 07:49 AM, Lars Marowsky-Bree wrote:
(But the mdadm operations the RA does also shouldn't cause data
corruption. That
or later.
It's only MD bug in a sense that MD can't actually stop you from
shooting yourself.
HTH
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Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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Linux-HA
of the unmanaged resource, /without/ monitoring.
I'd of thunk the un in unmanaged means none of its business.
(Would the cluster also like to know what my grandmother's maiden name
was between 1939 and 1945?)
--
Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
On 11/01/2011 07:17 AM, Nick Khamis wrote:
We
will need to turn SELINUX
back soon.
You know you won't be able to ssh in as root if you do that, right?
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Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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On 11/01/2011 01:45 PM, Nick Khamis wrote:
Should be possible to sudo?
As long as you don't need xauth
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Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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and
methods bit)
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Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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On 10/31/2011 7:14 AM, Lars Ellenberg wrote:
Yes, basically that is what happens: it kills everything it
spawned, makes sure it sleeps for at least deadtime,
then re-execs the itself as new master control process.
Re-exec itself? Cute. I never seen that -- but that again, the only time
I
On 10/28/2011 6:18 AM, Lars Ellenberg wrote:
On Tue, Oct 25, 2011 at 02:29:55PM -0500, Dimitri Maziuk wrote:
I guess he's confused or trolling because in v1 there's no way heartbeat
can restart itself.
No, absolutely not.
...
Which is supposed to result in all started resources
On 10/24/2011 10:49 PM, Hai Tao wrote:
In case heartbeat communication is lost, brain split then happened, both
nodes (a two nodes cluster for a simple example) are having the vip and other
resources.
When the heartbeat commnication comes back, what will happen?
1. both nodes will still
because in v1 there's no way heartbeat
can restart itself.
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Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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those broken symlinks after every software update on the passive node.
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Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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Linux-HA
Straw poll:
1. how long did it take you to get your first corosync/pacemaker/drbd
cluster up and running the way you wanted?
2. are you, or have you ever been a developer working on linux-ha projects?
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Dimitri Maziuk
Programmer/sysadmin
BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu
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