Great help! Thank you for your time! Much appreciated!
From: David Coulson
To: Hermes Flying
Cc: Baptiste ; "haproxy@formilux.org"
Sent: Thursday, November 29, 2012 11:13 PM
Subject: Re: HAproxy and detect split-brain (network failures)
?
Should I look into it?
*From:* David Coulson
*To:* Hermes Flying
*Cc:* Baptiste ; "haproxy@formilux.org"
*Sent:* Thursday, November 29, 2012 11:04 PM
*Subject:* Re: HAproxy and detect split-brain (network failures)
Again, you need to talk to the pacemaker people for actual
>primary?
>How does the ping help?
>
>
>
>From: David Coulson mailto:da...@davidcoulson.net
>To: Hermes Flying mailto:flyingher...@yahoo.com
>Cc: Baptiste mailto:bed...@gmail.com; mailto:haproxy@formilux.org
>mailto:haproxy@formilux.org
>Sent: Thursday, Novembe
quot;haproxy@formilux.org"
*Sent:* Thursday, November 29, 2012 10:26 PM
*Subject:* Re: HAproxy and detect split-brain (network failures)
On 11/29/12 3:11 PM, Hermes Flying wrote:
I see now!
One last question since you are using Pacemaker. Do you recommend it
for splitbrain so that I
e other is
down due to network failure of the communcation link
So how does this work for your system?
From: Owen MArinas
To: haproxy@formilux.org
Sent: Thursday, November 29, 2012 10:40 PM
Subject: Re: HAproxy and detect split-brain (network failures)
we ha
27;t and
it is just their communication link that failed? Won't both become primary?
How does the ping help?
From: David Coulson
To: Hermes Flying
Cc: Baptiste ; "haproxy@formilux.org"
Sent: Thursday, November 29, 2012 10:26 PM
Subject: Re:
we have exactly that setup with heartbeat, and 2 floating IPs.
Working in production for 3 years now
Owen
On 29/11/2012 3:26 PM, David Coulson wrote:
On 11/29/12 3:11 PM, Hermes Flying wrote:
I see now!
One last question since you are using Pacemaker. Do you recommend it
for splitbrain so
On 11/29/12 3:11 PM, Hermes Flying wrote:
I see now!
One last question since you are using Pacemaker. Do you recommend it
for splitbrain so that I look into that direction?
Any two node cluster has risk of split brain. if you implement
fencing/STONITH, you are in a better place. If you have
and HAProxy2 in my described
deployment
From: David Coulson
To: Hermes Flying
Cc: Baptiste ; "haproxy@formilux.org"
Sent: Thursday, November 29, 2012 9:29 PM
Subject: Re: HAproxy and detect split-brain (network failures)
Both haproxy instance
nt what can I do?
*From:* David Coulson
*To:* Hermes Flying
*Cc:* Baptiste ; "haproxy@formilux.org"
*Sent:* Thursday, November 29, 2012 9:12 PM
*Subject:* Re: HAproxy and detect split-brain (network failures)
Again, you are mixing everything up.
HAProxy has it's own confi
on
To: Hermes Flying
Cc: Baptiste ; "haproxy@formilux.org"
Sent: Thursday, November 29, 2012 9:12 PM
Subject: Re: HAproxy and detect split-brain (network failures)
Again, you are mixing everything up.
HAProxy has it's own configuration - It defines what nodes your port
80 tra
in distributing the load to all the nodes.
*From:* David Coulson
*To:* Hermes Flying
*Cc:* Baptiste ; "haproxy@formilux.org"
*Sent:* Thursday, November 29, 2012 8:57 PM
*Subject:* Re: HAproxy and detect split-brain (network failures)
You can do that, but haproxy doesn't hav
ubject: Re: HAproxy and detect split-brain (network failures)
You can do that, but haproxy doesn't have anything to do with the failover
process, other than you run an instance of haproxy on one server, and another
instance on your backup system. As I said, neither of the haproxy instanc
ails? I remember
>> reading this. Is this wrong?
>>
>> From: David Coulson
>> To: Hermes Flying
>> Cc: Baptiste ; "haproxy@formilux.org"
>>
>> Sent: Thursday, November 29, 2012 8:39 PM
>> Subject: Re: HAproxy and detect split-brain (netwo
manual for this somewhere?
*From:* David Coulson mailto:da...@davidcoulson.net
*To:* Hermes Flying mailto:flyingher...@yahoo.com
*Cc:* Baptiste mailto:bed...@gmail.com; mailto:haproxy@formilux.org
mailto:haproxy@formilux.org
*Sent:* Thursday, November 29, 2012 8:21 PM
*Subject:* Re: HAproxy and
From: David Coulson
To: Hermes Flying
Cc: Baptiste ; "haproxy@formilux.org"
Sent: Thursday, November 29, 2012 8:39 PM
Subject: Re: HAproxy and detect split-brain (network failures)
You are mixing two totally different things together.
1) HAProxy will do periodic health checks of
mes Flying
*Cc:* Baptiste ; "haproxy@formilux.org"
*Sent:* Thursday, November 29, 2012 8:21 PM
*Subject:* Re: HAproxy and detect split-brain (network failures)
HAProxy only does primary and backup in terms of active backend
systems - You can have a pool of primary that it routes across
manual for this somewhere?
From: David Coulson
To: Hermes Flying
Cc: Baptiste ; "haproxy@formilux.org"
Sent: Thursday, November 29, 2012 8:21 PM
Subject: Re: HAproxy and detect split-brain (network failures)
HAProxy only does primary and backup in te
: Hermes Flying ; "haproxy@formilux.org"
Sent: Thursday, November 29, 2012 3:13 PM
Subject: Re: HAproxy and detect split-brain (network failures)
Hi,
We use Keepalived http://www.keepalived.org/index.html to manage the Virtual IP
address management between our two physical HAproxy s
of HAProxy's primary/backup "protocol" ?
*From:* Baptiste
*To:* Hermes Flying
*Cc:* "haproxy@formilux.org"
*Sent:* Thursday, November 29, 2012 3:02 PM
*Subject:* Re: HAproxy and detect split-brain (network failures)
Hi,
This is not HAProxy's role, this is the t
s Flying
Cc: "haproxy@formilux.org"
Sent: Thursday, November 29, 2012 3:02 PM
Subject: Re: HAproxy and detect split-brain (network failures)
Hi,
This is not HAProxy's role, this is the tool you use to ensure high
availability to do that.
I could see a way where HAProxy can
Hi,
We use Keepalived http://www.keepalived.org/index.html to manage the Virtual IP
address management between our two physical HAproxy servers. It maintains
heartbeat between the servers, and in the event of failure passes ensures that
the VIPs are migrated and the service is brought up. Also
Hi,
This is not HAProxy's role, this is the tool you use to ensure high
availability to do that.
I could see a way where HAProxy can report one interface failing,
maybe this could help you to detect if you're in a split brain
situation.
cheers
On Thu, Nov 29, 2012 at 11:51 AM, Hermes Flying
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