You can setup the system in such case that on fabric fence, the node is
rebooted which will allow it to 'unfence' itself afterwards.
For details check https://access.redhat.com/solutions/3367151 or
https://access.redhat.com/node/65187 (You may use RH developer subscription in
order to acess
Are gou using sharding for glusterfs ?
I would put libvirt service and glusterfs service in a systemd dependency as
your libvirt relies on gluster being available.
Also, check if you got 'backup-volfile-servers' mount option if using FUSE.With
libgfapi, I got no clue how to configure that.
Your
i would go with a VM hosting all resources and setup a 3-node Virtualization
cluster.
The concept that the cluster should keep your resources up even if another 7
nodes died is not good -> there could be a network issue or other cases where
this approach won't (and should not) work.
As Antony
In order to test properly, use firewall rules to drop the corosync traffic.I
remember that this test (ifdown NKC) was inefficient in previous versions of
corosync.
If you wish to be more safe, try to setup ocf:pacemaker:ping.
Best Regards,Strahil Nikolov
On Fri, Sep 3, 2021 at 5:09, 重力加速度
Won't something like this work ? Each node in LA will have same score of 5000,
while other cities will be -5000.
pcs constraint location DummyRes1 rule score=5000 city eq LA
pcs constraint location DummyRes1 rule score=-5000 city ne LA
stickiness -> 1
Best Regards,Strahil Nikolov
Out of
Yes.INFINITY= 100 (one million)-INFINITY=-100(negative one mill)
Set stickiness > 100 .
Best Regards,Strahil Nikolov
> The `location` section overwrites the stickiness?
___
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I've setup something similar with VIP that is everywhere using the
globally-unique=true (where cluster controls which node to be passive and which
active). This allows that the VIP is everywhere but only 1 node answers the
requests , while the WEB server was running everywhere with config and
> name="statusurl" value="http://localhost/server-status"/>
Can you show the apache config for the status page ? It must be accessible only
from localhost (127.0.0.1) and should not be reachable from the other nodes.
Best Regards,
Strahil Nikolov
___
>Because Asterisk at cityA is bound to a floating IP address, which is held
>onone of the three machines in cityA. I can't run Asterisk on all
>threemachines there because only one of them has the IP address.
That's not true. You can use a cloned IP resource with 'globally-unique=true'
which
So far, I never had a cluster with nodes directly connected to the same
switches. Usually it's a nodeA -> switchA -> switchB -> nodeB and sometimes
connectivity between switches goes down (for example a firewall rule).
Best Regards,
Strahil Nikolov
В сряда, 28 юли 2021 г., 15:51:36 ч.
Firewall issue ?
Did you check on corosync level if all nodes reach each other ?
Best Regards,
Strahil Nikolov
В сряда, 28 юли 2021 г., 16:32:51 ч. Гринуич+3, S Sathish S via Users
написа:
Hi Team,
we are trying to add node03 to existing cluster after adding we could see
1/html/Clusters_from_Scratch/_move_resources_manually.html
Best Regards,Strahil Nikolov
On Tue, Aug 3, 2021 at 22:16, Ervin Hegedüs wrote: Hi,
On Tue, Aug 03, 2021 at 05:46:51PM +, Strahil Nikolov via Users wrote:
> Yes.INFINITY= 100 (one million)-INFINITY=-100(negative one mi
, Andrei Borzenkov wrote:
> On Wed, Aug 4, 2021 at 5:03 PM Antony Stone wrote:
> > On Wednesday 04 August 2021 at 13:31:12, Andrei Borzenkov wrote:
> > > On Wed, Aug 4, 2021 at 1:48 PM Antony Stone wrote:
> > > > On Tuesday 03 August 2021 at 12:12:03, Strahil N
I still can't understand why the whole cluster will fail when only 3 nodes are
down and a qdisk is used.
CityA -> 3 nodes to run packageA -> 3 votesCityB -> 3 nodes to run packageB ->
3 votesCityC -> 1 node which cannot run any package (qdisk) -> 1 vote
Max votes:7Quorum: 4
As long as one city
Ah... That's the first thing I change.In SLES, that is defaulted to 10s and so
far I have never seen an environment that is stable enough for the default 1s
timeout.
Best Regards,Strahil Nikolov
On Sat, Oct 9, 2021 at 9:59, Jehan-Guillaume de Rorthais
wrote:
Le 9 octobre 2021 00:11:27
What do you mean by 1s default timeout ?
Best Regards,Strahil Nikolov
On Fri, Oct 8, 2021 at 16:02, damiano giuliani
wrote: ___
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ClusterLabs home:
Erm,
in my corosync.conf I got also 'name: the-name-of-the-host' and 'nodeid:
' .
I don't see these 2 in your config .
Best Regards,
Strahil Nikolov
В вторник, 28 септември 2021 г., 02:39:20 ч. Гринуич+3, Neitzert, Greg A
написа:
Hello,
We have an issue with a 2 node cluster
Yeah,
it seems I missed the nodeid, so can you try setting the "name: hostname" in
the corosync.conf ?
Best Regards,
Strahil Nikolov
В вторник, 28 септември 2021 г., 10:34:41 ч. Гринуич+3, Strahil Nikolov via
Users написа:
Erm,
in my corosync.conf I got also 'name
Dif you try the 'ionice -c 2 -n 7 nice cp ' ?
Best Regards,Strahil Nikolov
On Thu, Sep 30, 2021 at 14:58, Lentes,
Bernd wrote:
- On Sep 30, 2021, at 3:55 AM, Gang He g...@suse.com wrote:
>>
>> 1) No problems during this step, the procedure just needs a few seconds.
>> reflink
These 'dirty' sysctl settings are configureable. For large sequential I/O it's
desirable 'dirty' ratio/bytes to be bigger, while for small files/random I/O
it's better to be kept low.
Best Regards,
Strahil Nikolov
В вторник, 5 октомври 2021 г., 08:52:20 ч. Гринуич+3, Ulrich Windl
I would use something liek this:
ionice -c 2 -n 7 nice cp XXX YYY
Best Regards,
Strahil Nikolov
В понеделник, 27 септември 2021 г., 13:37:31 ч. Гринуич+3, Lentes, Bernd
написа:
Hi,
i have a two-node cluster running on SLES 12SP5 with two HP servers and a
common FC SAN.
Most of my
Hey Ken,
how should someone set the maintenace via pcs ?
Best Regards,Strahil Nikolov
On Mon, Sep 27, 2021 at 19:56, Ken Gaillot wrote: On
Mon, 2021-09-27 at 12:37 +0200, Lentes, Bernd wrote:
> Hi,
>
> i have a two-node cluster running on SLES 12SP5 with two HP servers
> and a common FC
, Nov 21, 2021 at 8:47, Andrei Borzenkov wrote:
On 21.11.2021 00:39, Strahil Nikolov via Users wrote:
> Nope, as long as you use SBD's integration with pacemaker. As the 2 nodes can
> communicate between each other sbd won't act. I thinkt it was an entry like
> this in the /etc/sysc
You can also use this 3rd node to provide iSCSI and then the SBD will be
disk-full :D . The good thing about this type of setup is that you do won't
need to put location constraints for the 3rd node.
Also, check the ping resource -> you can set it up to "kick-out" all resources
on failure of
, 2021 at 08:33:26PM +,
Strahil Nikolov via Users wrote:
> You can also use this 3rd node to provide iSCSI and then the SBD will
> be disk-full :D . The good thing about this type of setup is that you
> do won't need to put location constraints for the 3rd node.
Wouldn't that make the i
Have you tried with a Fedora package from the archives?
I found
https://dl.fedoraproject.org/pub/archive/fedora/linux/releases/23/Everything/x86_64/os/Packages/p/pacemaker-1.1.13-3.fc23.x86_64.rpm
&
Also, check what 'drbdadm' has to tell you. Both nodes should be in sync,
otherwise pacemaker will prevent the failover.
Best Regards,Strahil Nikolov
On Sun, Nov 14, 2021 at 20:09, Andrei Borzenkov wrote:
On 14.11.2021 19:47, Neil McFadyen wrote:
> I have a Ubuntu 20.04 drbd nfs
Have you tried with ping and a location constraint for avoiding hosts that
cannot ping an extrrnal system.
Best Regards,Strahil Nikolov
On Mon, Nov 15, 2021 at 0:07, S Rogers wrote:
Using on-fail=fence is what I initially tried, but it doesn't work
unfortunately.
It looks like this is
Have you checked the options in /etc/sysconfig/pacemaker as recommended in
https://documentation.suse.com/sle-ha/15-SP3/html/SLE-HA-all/app-ha-troubleshooting.html#sec-ha-troubleshooting-log
?
Best Regards,
Strahil Nikolov
В неделя, 31 октомври 2021 г., 13:33:43 ч. Гринуич+2, Andrei
At least it's worth trying (/etc/sysconfig/pacemaker):PCMK_trace_files=*
Best Regards,Strahil Nikolov
On Sun, Oct 31, 2021 at 18:10, Vladislav Bogdanov
wrote: ___
Manage your subscription:
https://lists.clusterlabs.org/mailman/listinfo/users
I think Ulrich was ment the "dirty" buffers like the ones described at
https://www.suse.com/support/kb/doc/?id=17857
Based on my experience, you should lower the background dirty tunable as low as
possible (let's say 500-600MB) and increase the other tunable at least the
double.
Keep in
Hi,
consider using a 3rd system as a Q disk. Also, you can use iscsi from that node
as a SBD device, so you will have proper fencing .If you don't have a hardware
watchdog device, you can use softdog kernel module for that.
Best Regards,Strahil Nikolov
On Wed, Jul 21, 2021 at 1:45, Digimer
Yep, just set the stickiness to something bigger than '0' (max is INFINITY ->
100)
Best Regards,Strahil Nikolov
On Thu, Jul 15, 2021 at 15:02, Ervin Hegedüs wrote: Hi
there,
I have to build a very simple cluster with only one resource: a virtual IP.
The "challenge":* there are two
you're talking
about, but less-experienced admins need to run cluster commands
occasionally.
On Tue, 2022-01-11 at 12:17 +, Strahil Nikolov via Users wrote:
> To be honest, I don't see any benefit.
> Even if you have the stack translated, when a more complex setup is
> needed -> you
To be honest, I don't see any benefit.Even if you have the stack translated,
when a more complex setup is needed -> you will always have to search in the
source/github issues/documentation/mailing list history and rely on English.
Best Regards,Strahil Nikolov
On Tue, Jan 11, 2022 at 9:23,
, 2022 at 11:15, Jehan-Guillaume de Rorthais
wrote: On Wed, 9 Feb 2022 17:42:35 + (UTC)
Strahil Nikolov via Users wrote:
> If you gracefully shutdown a node - pacemaker will migrate all resources away
> so you need to shut them down simultaneously and all resources should be
>
You can try creating a dummy resource and colocate all clones with it.
Best Regards,Strahil Nikolov
On Tue, Mar 15, 2022 at 20:53, john tillman wrote: > On
15.03.2022 19:35, john tillman wrote:
>> Hello,
>>
>> I'm trying to guarantee that all my cloned drbd resources start on the
>> same
You can bump the 'token' to a higher value (for example 10s ) and adjust the
consensus based on that value. See man 5 corosync.conf
Don't forget to sync the nodes and reload the corosync stack.
Of course proper testing on non-Prod is highly recommend.
Note: Both parameters use milliseconds (at
To be honest, I always check
https://documentation.suse.com/sle-ha/15-SP3/html/SLE-HA-all/cha-ha-storage-protect.html#sec-ha-storage-protect-watchdog-timings
for sbd and timings.
Best Regards,Strahil Nikolov
On Wed, Feb 16, 2022 at 19:31, Klaus Wenninger wrote:
Also,there is a way to tell the cluster to cleanup failures -> failure-timeout
Best Regards,Strahil Nikolov
On Sat, Feb 19, 2022 at 1:52, Jehan-Guillaume de Rorthais
wrote: Hello,
On Fri, 18 Feb 2022 21:44:58 +
"Larry G. Mills" wrote:
> ... This happened again recently, and the
man votequorum
auto_tie_breaker: 1 allows you to have quorum with 50%, yet if for example
Aside (node with lowest id) dies, B side is 50% but won't be able to bring back
the resources as the node with lowest id is in A side.If you want to avoid
that, you can bring a qdevice on a VM in third
I always used this one for triggering kdump when using
sbd:https://www.suse.com/support/kb/doc/?id=19873
On Fri, Feb 25, 2022 at 21:34, Reid Wahl wrote: On Fri,
Feb 25, 2022 at 3:47 AM Andrei Borzenkov wrote:
>
> On Fri, Feb 25, 2022 at 2:23 PM Reid Wahl wrote:
> >
> > On Fri, Feb
Token timeout -> network issue ?
Just run a continious ping (with timestamp) and log it into a file (from each
host to other host + qdevice ip).
Best Regards,Strahil Nikolov
On Thu, Feb 17, 2022 at 11:38, Sebastien BASTARD
wrote: Hello CoroSync's team !
We currently have a proxmox
I haven't heard about removal of the libgfapi, so most probably ot's a
packaging issue.
The FUSE mount point can be setup via a cloned Filesystem resource and there
should be no problems with it and live migration should work.
Best Regards,Strahil Nikolov
On Tue, Feb 15, 2022 at 19:16,
Strangely I can't see any timeouts set in at the example in
https://pve.proxmox.com/wiki/Fencing ?
Best Regards,Strahil Nikolov
On Tue, Feb 22, 2022 at 18:54, Sebastien BASTARD
wrote: Hello Strahil,
I don't have pcs software (corosync is embedded in proxmox), but I have "pvecm
Is the qdevice on a VM ?
Best Regards,Strahil Nikolov
On Tue, Feb 22, 2022 at 15:03, Sebastien BASTARD
wrote: ___
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ClusterLabs home: https://www.clusterlabs.org/
What kind of fencing are you using ?
Best Regards,Strahil Nikolov
On Tue, Feb 22, 2022 at 15:24, Sebastien BASTARD
wrote: Hello Strahil Nikolov,
Qdevice is not a vm. It is a Linux Debian, physical server.
Best regards.
Le mar. 22 févr. 2022 à 14:20, Strahil Nikolov a écrit :
Is the
fencing is the reboot mechanism
pcs status
Best Regards,Strahil Nikolov
On Tue, Feb 22, 2022 at 16:44, Sebastien BASTARD
wrote: Hello Strahil,
As I don't know the kind of fencing, here is the current configuration of
corosync :
logging {
debug: off
to_syslog: yes}
nodelist {
node
Also xmllint has '--xpath' (unless you are running something as old as RHEL6)
and is available on every linux distro.
Best Regards,Strahil Nikolov
On Mon, Mar 21, 2022 at 15:41, Ken Gaillot wrote: On
Mon, 2022-03-21 at 08:27 +0100, Ulrich Windl wrote:
> > > > Ken Gaillot schrieb am
Corosync rings are never enough , especially when the network team has such
naughty hands.
Best Regards,Strahil Nikolov
On Mon, Mar 28, 2022 at 16:55, Ulrich
Windl wrote: >>> Strahil Nikolov via Users
schrieb am 28.03.2022 um
15:49 in Nachricht <1758982440.55908
One huge benefit of the new stack is that you can have 8 corosync rings, which
is really powerful.
Best Regards,Strahil Nikolov
On Mon, Mar 28, 2022 at 9:27, Christine caulfield wrote:
On 28/03/2022 03:30, Somanath Jeeva via Users wrote:
> Hi ,
>
> I am upgrading from corosync
What about if you disable the enable-startup-probes at fencing (custom fencing
that sets it to false and fails, so the next fencing device in the topology
kicks in)?
When the node joins , it will skip startup probes and later a systemd service
or some script check if all nodes were up for at
I think there is pcs cluster edit --scope=resources (based on memory).Can you
try to delete it from there ?
Best Regards,Strahil Nikolov
On Sat, Jan 29, 2022 at 7:12, Digimer wrote:
___
Manage your subscription:
I know... and the editor stuff can be bypassed, if the approach works.
Best Regards,Strahil Nikolov
On Sat, Jan 29, 2022 at 15:43, Digimer wrote:On
2022-01-29 03:16, Strahil Nikolov wrote:
I think there is pcs cluster edit --scope=resources (based on memory). Can you
try to
Are you using HA-LVM or CLVM ?
Best Regards,Strahil Nikolov
On Thu, Jan 27, 2022 at 16:10, Ulrich
Windl wrote: Hi!
I know this is semi-offtopic, but I think it's important:
I've upgraded one cluster node being a Xen host from SLES15 SP2 to SLES15 SP3
using virtual DVD boot (i.e. the
If you gracefully shutdown a node - pacemaker will migrate all resources away
so you need to shut them down simultaneously and all resources should be
stopped by the cluster.
Shutting down the nodes would be my choice.
Best Regards,Strahil Nikolov
On Wed, Feb 9, 2022 at 12:52, Lentes,
Shouldn't you use kind ' Mandatory' and simetrical TRUE ?
If true, the reverse of the constraint applies for the opposite action (for
example, if B starts after A starts, then B stops before A stops).
Best Regards,Strahil Nikolov
On Fri, Feb 11, 2022 at 9:11, Ulrich Windl
wrote: >>>
efaults rsc-options: \
resource-stickiness=1000 \
migration-threshold=5000
op_defaults op-options: \
timeout=600 \
record-pending=true \
no-quorum-policy=ignore
On Fri, 11 Feb 2022 at 21:29, Klaus Wenninger wrote:
On Fri, Feb 11, 2022 at 9:13 AM Strahi
You can use 'kind' and 'symmetrical' to control order constraints. The default
value for symmetrical is 'true' which means that in order to stop dummy1 , the
cluster has to stop dummy1 & dummy2.
Best Regards,Strahil Nikolov
On Fri, Apr 8, 2022 at 15:29, ChittaNagaraj,
Raghav wrote:
debug start is doing the described in
https://wiki.clusterlabs.org/wiki/Debugging_Resource_Failures
Best Regards,Strahil Nikolov
On Mon, Apr 11, 2022 at 7:21, Aj Revelino wrote: Hi
Strahil, Yes I went through the documentation from Azure. In fact, we have 6
production clusters running
It's not like that.
Let's assume you have a resource Dummy1 with prefference to nodeA (score 10).If
your stickiness is 20 - the resource will not fall back to nodeA (after a
failure) when it returns as nodeA = 10, current node = 20 (due to stickiness.
If your stickiness is '1' , while nodeA has
You can use pcs resource debug-start, but you have to shut it down before that.
Have you used some documentation for the setup ? Usually I reffer to the
vendor's documentation. Go over it and check for a step that was not
implemented.
RH's latest version is:
Set the corosync token to 1 miliseconds and adjust the consensus as per the
man 5 corosync.conf and give it a try.
Don't forget to sync the corosync settings among the cluster.
Best Regards,Strahil Nikolov
On Fri, Apr 15, 2022 at 15:27, vitaly wrote: Hello
Everybody.
I am seeing
Well, you can always make a single-node cluster with the quorum device's host
and setup systemd resource to keep the service up and running.With SBD, that
single-node cluster will suicide in case the machine ends in a unresponsive
state.
Best Regards,Strahil Nikolov
On Fri, Jul 15, 2022
You can use a meta attribute to expire failures . The attribute name is
'failure-timeout'I have used it for my fencing devices as during the night the
network was quite busy.
Best Regards,Strahil Nikolov
On Tue, Apr 26, 2022 at 23:54, Hayden, Robert via
Users wrote:
Robert Hayden |
What is the output of 'gfs2_edit -p jindex /dev/shared_vg1/shared_lv1 |grep
journal
Source:
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/configuring_gfs2_file_systems#proc_adding-gfs2-journal-creating-mounting-gfs2
Best Regards,Strahil Nikolov
On
Why do you use Linstor and not DRBD ?As far as I know Linstor is more suitable
for Kubernetes/Openshift .
Best Regards,Strahil Nikolov
On Thu, Apr 28, 2022 at 8:19, Eric Robinson wrote:
This is probably off-topic but I’ll try anyway. Do we have any Linstor gurus
around here? I’ve read
Have you checked with drbd commands if the 2 nodes were in sync?
Also consider adding the shared dir, lvm,etc into a single group -> see
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/high_availability_add-on_administration/s1-resourcegroupcreatenfs-haaa
Best
In clouds you can't just use VIPs.Use azure-lb resource instead.
Best Regards,Strahil Nikolov
On Fri, Jul 29, 2022 at 23:21, Reid Wahl wrote: On Fri,
Jul 29, 2022 at 1:02 PM Reid Wahl wrote:
>
> On Fri, Jul 29, 2022 at 12:52 PM Ross Sponholtz
> wrote:
> >
> > I’m running a RHEL
Also both SuSE and Red Hat documentation is quite extensive and can be
considered as a good start.
Best Regards,Strahil Nikolov
On Wed, Aug 10, 2022 at 18:41, Turritopsis Dohrnii Teo En
Ming wrote: On Wed, 10 Aug 2022 at 23:37, Reid Wahl
wrote:
>
> On Wed, Aug 10, 2022 at 8:13 AM
My rule number 1 is to put all DNS entries in /etc/hosts or use dnsmasq for
local DNS caching.Rule number 2 , add cluster nodes as ntp/chrony peers (with
'prefer' for the ntp servers) to avoid node drift if time source is down for a
long time.
Should the cluster take care of unstable infra ->
Hi All,
This is my first cluster in the cloud and I have 2 questions that I'm hoping to
get a clue.
1. Where I can find the 'gcloud-ra' binary on EL9 system ? I have installed
resource-agents-cloud but I can't find it.
2. Is gcp-vpc-move-vip a good approach to setup the VIP ?
Best
On Mon, Feb 19, 2024 at 10:16 AM lejeczek via Users
wrote:
>
>
>
> On 19/02/2024 09:06, Strahil Nikolov via Users wrote:
> > Hi All,
> >
> > Is there a specific setup I missed in order to setup the
> > web interface ?
> >
> > Usually, you just login
Hi All,
Is there a specific setup I missed in order to setup the web interface ?
Usually, you just login with the hacluster user on https://fqdn:2224 but when I
do a curl, I get an empty response.
Best Regards,Strahil Nikolov___
Manage your
Hello All,
I will soon build my first cluster in the cloud and I was wondering if I can
still use IPAddr2 resource in GCP or I really have to use
ocf:heartbeat:gcp-vpc-move-route & ocf:heartbeat:gcp-vpc-move-vip ?
I'm still trying to find a guide, so I can understand the idea behind those
Hi Oyvind
I found your e-mail in my spam folder.It seems 'gcloud-ra' doesn't exits and
it's not needed for the fence agent or the gcp-vpc-move-vip.
Best Regards,Strahil Nikolov
On Wed, Feb 7, 2024 at 13:26, Oyvind Albrigtsen wrote:
On 07/02/24 11:15 +, Strahil Nikolov via Users wrote
Hi All,
I'm starting this thread in order to warn you that if you updated recently and
'google-cloud-cli' rpm was deployed (obsoletes 'google-cloud-sdk'), fencing
won't work for you despite that fence_gce and 'pcs stonith fence' report
success.
The VM stays in a odd status (right now I don't
Hi All,
I'm sorry for the previous post. Most probably it's not google-cloud-cli as
even after downgrading, fencing still doesn't work all the time.
Best Regards,
Strahil Nikolov
В сряда, 27 март 2024 г. в 15:39:06 ч. Гринуич+2, Strahil Nikolov via Users
написа:
Hi All,
I'm
The interesting part is that after repeating the process (update the file, stop
& start pcsd and pcs host auth ) everything is working fine including the web
UI.
Best Regards,
Strahil Nikolov
On Mon, Apr 15, 2024 at 17:20, Strahil Nikolov via
Users wrote: Hi All,
I need your
Hi All,
I need your help to change the pcsd port.I set the port in /etc/sysconfig/pcsd
on all nodes:PCSD_PORT=3500
Yet, the daemon is not listening on it.
Best Regards,
Strahil Nikolov___
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