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Today's Topics:
1. Re: Failover dhcpd pair stuck in partner-down/shutdown state
(Thomas Markwalder)
2. Re: Failover dhcpd pair stuck in partner-down/shutdown state
(Eugene Grosbein)
3. Re: Failover dhcpd pair stuck in partner-down/shutdown state
(Eugene Grosbein)
----------------------------------------------------------------------
Message: 1
Date: Thu, 3 Jan 2019 08:26:39 -0500
From: Thomas Markwalder <tm...@isc.org>
To: Eugene Grosbein <eu...@grosbein.net>, Users of ISC DHCP
<dhcp-users@lists.isc.org>
Subject: Re: Failover dhcpd pair stuck in partner-down/shutdown state
Message-ID: <a8025875-a234-6d80-080f-28905f0df...@isc.org>
Content-Type: text/plain; charset=utf-8; format=flowed
There are also a handful of error conditions that can cause a server to
transition to shut_down.
On 1/2/19 11:15 PM, Eugene Grosbein wrote:
> 03.01.2019 3:08, Thomas Markwalder wrote:
>
>> Hello:
>>
>> I suspect that at some point in the past one of the servers was put into the
>> shutdown state
>> by setting it's state to shutdown (8) via omshell. This caused the other
>> server to toggle to partner-down (4).
>> They servers will stay that way until you take them through recovery by
>> setting the partner-down peer's state to recover (6).
>> When a server is set to shutdown state it remains that until you intervene.
>> This is intended to allow you to do maintenance and what not with minimal
>> issues.
> I've never learned how to use omshell, never used it and it is not configured
> here even.
>
>
------------------------------
Message: 2
Date: Fri, 4 Jan 2019 00:04:38 +0700
From: Eugene Grosbein <eu...@grosbein.net>
To: Thomas Markwalder <tm...@isc.org>, Users of ISC DHCP
<dhcp-users@lists.isc.org>
Subject: Re: Failover dhcpd pair stuck in partner-down/shutdown state
Message-ID: <c1430a12-cc18-d74d-656d-5d50d226c...@grosbein.net>
Content-Type: text/plain; charset=utf-8
03.01.2019 20:26, Thomas Markwalder wrote:
> On 1/2/19 11:15 PM, Eugene Grosbein wrote:
>> 03.01.2019 3:08, Thomas Markwalder wrote:
>>> They servers will stay that way until you take them through recovery by
>>> setting the partner-down peer's state to recover (6).
>>> When a server is set to shutdown state it remains that until you intervene.
>>> This is intended to allow you to do maintenance and what not with minimal
>>> issues.
Thanks, I did not know this and could not find a manual page documenting this.
>> I've never learned how to use omshell, never used it and it is not
>> configured here even.
> There are also a handful of error conditions that can cause a server to
> transition to shut_down.
Can you please explain what error conditions can lock a server in shut_down
state?
------------------------------
Message: 3
Date: Fri, 4 Jan 2019 10:28:04 +0700
From: Eugene Grosbein <eu...@grosbein.net>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: Failover dhcpd pair stuck in partner-down/shutdown state
Message-ID: <e70f6a0d-a204-9acc-f240-bca1085c3...@grosbein.net>
Content-Type: text/plain; charset=windows-1252
04.01.2019 4:02, Bruce Hudson wrote:
> On Thu, Jan 03, 2019 at 11:12:49AM +0700, Eugene Grosbein wrote:
>
>> My question was not how to restore state but why it does not restore
>> automatically?
>
> My apologies, I guess I skimmed your first port too quickly. The short
> answer is "design choice". There is a problem in redundant systems called
> "partioning" that cannot generally be solved with only two peers. To avoid it
> you need "half + 1" in the working set. ISC's answer was to make the process
> manual.
Thank you for explaining this. The problem is, the server(s) got stuck in this
state
due to some obscure error all by itself.
------------------------------
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