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Today's Topics:
1. Re: clients internet issue because of different lease time in
dhcp failover (Usman Ahmad)
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)
4. Re: clients internet issue because of different lease time in
dhcp failover (Eugene Grosbein)
5. Re: clients internet issue because of different lease time in
dhcp failover (Usman Ahmad)
----------------------------------------------------------------------
Message: 1
Date: Thu, 3 Jan 2019 04:48:52 +0400
From: Usman Ahmad <usman....@gmail.com>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: clients internet issue because of different lease time in
dhcp failover
Message-ID:
<CALE1tGrHty4o85JwP5dqLr7SKca6US-wY5EtbPdrc=qudvh...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
it was also found that the secondary dhcp server partition (/var) in which
the lease and logs files were writing, it was 100% full. can it also be a
reason for dhcp packet disruption?
regards,
Usman
On Thu, Jan 3, 2019 at 3:16 AM Usman Ahmad <usman....@gmail.com> wrote:
> Dear Users,
>
> Today it was mentioned mistakenly a different value of lease time on my
> two dhcp server which are configured in failover. Customers gets the IP
> address normally but the internet stops working for them.
>
> Could you please explain me that is that a normal behavior or unexpected?
> because as per my understanding; if customerA is sending DHCP request to
> both DHCP servers and accepts the IP address from single server then
> configuration mentioned in that DHCP server should work normally.
>
> please confirm
>
> *--*
> *Regards,*
> Usman Ahmad
>
--
*--*
*Regards,*
Usman Ahmad
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Message: 2
Date: Thu, 3 Jan 2019 11:12:49 +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: <811a7fc3-3b2f-f0cc-1fb4-f6d770b8d...@grosbein.net>
Content-Type: text/plain; charset=windows-1252
03.01.2019 0:38, Bruce Hudson wrote:
> This may be a silly question but, have you tried to change the server
> state manually? You said you restarted the server. However, as you pointed
> out, a "failover peer" stanza is added to the lease file and should put
> the server back into its previous state as soon as the lease file is
> processed. Was there an existing "failover peer" stanza in your file?
Yes, it was.
> One way to restore your state would be through OMAPI, assuming you
> have the listener configured. You want to run something like the code
> below on each server.
My question was not how to restore state but why it does not restore
automatically?
> The other way might be to shut down the server and edit the lease file
> before restarting it.
That's what I did and described in my first port.
------------------------------
Message: 3
Date: Thu, 3 Jan 2019 11:15:02 +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: <24a52633-5fa2-2514-01f3-61d7484f5...@grosbein.net>
Content-Type: text/plain; charset=utf-8
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: 4
Date: Thu, 3 Jan 2019 11:20:21 +0700
From: Eugene Grosbein <eu...@grosbein.net>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: clients internet issue because of different lease time in
dhcp failover
Message-ID: <d93790b1-6820-3d13-e341-5e773e4c4...@grosbein.net>
Content-Type: text/plain; charset=windows-1252
03.01.2019 7:48, Usman Ahmad wrote:
> it was also found that the secondary dhcp server partition (/var) in which
> the lease and logs files were writing, it was 100% full.
> can it also be a reason for dhcp packet disruption?
Yes, it could. You should now check state of both servers: if their state
differ from "normal"?
------------------------------
Message: 5
Date: Thu, 3 Jan 2019 10:30:14 +0400
From: Usman Ahmad <usman....@gmail.com>
To: Users of ISC DHCP <dhcp-users@lists.isc.org>
Subject: Re: clients internet issue because of different lease time in
dhcp failover
Message-ID:
<CALE1tGr1AhvTtiwoJBpNszbLoxo9UMCTjd8mSh1tinXg_O=O=a...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
Yes both are in normal state now.
Thant means the issue happens because the new offered lease time was the
different than the lease time recorded in secondary server lease file which
wasn't updating due to space issue?
On Thu, Jan 3, 2019 at 8:20 AM Eugene Grosbein <eu...@grosbein.net> wrote:
> 03.01.2019 7:48, Usman Ahmad wrote:
>
> > it was also found that the secondary dhcp server partition (/var) in
> which the lease and logs files were writing, it was 100% full.
> > can it also be a reason for dhcp packet disruption?
>
> Yes, it could. You should now check state of both servers: if their state
> differ from "normal"?
>
> _______________________________________________
> dhcp-users mailing list
> dhcp-users@lists.isc.org
> https://lists.isc.org/mailman/listinfo/dhcp-users
>
--
*--*
*Regards,*
Usman Ahmad
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