How do I ask a question or two via this email so I can begin a dialouge?
On 1/26/2017 9:40 AM, leaf-user-requ...@lists.sourceforge.net wrote: > Send leaf-user mailing list submissions to > leaf-user@lists.sourceforge.net > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.sourceforge.net/lists/listinfo/leaf-user > or, via email, send a message with subject or body 'help' to > leaf-user-requ...@lists.sourceforge.net > > You can reach the person managing the list at > leaf-user-ow...@lists.sourceforge.net > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of leaf-user digest..." > > > Today's Topics: > > 1. Re: saving dnsmasq.leases on reboot (David M Brooke) > 2. Re: saving dnsmasq.leases on reboot (Andrew) > 3. Re: saving dnsmasq.leases on reboot (Erich Titl) > 4. Re: saving dnsmasq.leases on reboot (Bob von Knobloch) > 5. Re: saving dnsmasq.leases on reboot (Erich Titl) > 6. Re: saving dnsmasq.leases on reboot (Bob von Knobloch) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 26 Jan 2017 13:18:47 +0000 > From: David M Brooke <l...@davidmbrooke.co.uk> > Subject: Re: [leaf-user] saving dnsmasq.leases on reboot > To: Bering List <leaf-user@lists.sourceforge.net> > Message-ID: <d37ae4e7-2c01-4f19-bd33-7b2f4b099...@davidmbrooke.co.uk> > Content-Type: text/plain; charset=utf-8 > > >> On 26 Jan 2017, at 09:22, Mark Berndt <l...@mechtron.com.au> wrote: >> >> On Tue, 24 Jan 2017 03:35:17 PM John Sager wrote: >>> I think he wants to save it before every reboot rather than manually. >> yes, that is correct - I want to be able to save the ephemeral data that is >> not permanent configuration. >> >>> That would need a crafted script to save it (probably from local.stop), and >>> then reload it on boot up & make sure dnsmasq picked it up. You could put >>> the script in /root as everything there is saved to configdb.lrp. However if >>> the router just died on a power failure then you would end up with an old >>> leases file when it rebooted. Would that be a problem? >> I don't really see a problem with an old file, because the dhcp is fairly >> stable here. > An old file will probably contain expired leases, so it probably won?t work > the way you want. > However, an old file is no worse than no file at all, so not a particular > concern. > >> The problem I get now is that I have no leases after a router reboot which >> seriously effects my semi-permanent devices such as IP cameras, phone etc. I >> can't set them to a really short lease, because if the router is down I lose >> access to them. > To Eric?s point from before, using Static Leases (via dhcp-host= in > /etc/dnsmasq.conf) > ensures a device is given the same IP address consistently, but dnsmasq > doesn?t seem > to add the host to DNS unless there?s an *active* DHCP lease in effect. > So you need to *also* add an entry in /etc/hosts, for the address you know > will get allocated. > > Or we add some facility to save a defined list of ?emphemeral data? files on > a reboot... > >> many thanks >> >> Marko >> >> >>> John >>> >>> On 24/01/17 14:48, Erich Titl wrote: >>>> Hi >>>> >>>> Am 23.01.2017 um 22:46 schrieb Mark Berndt: >>>>> On Thu, 19 Jan 2017 04:52:57 PM Erich Titl wrote: >>>>>> Am 19.01.2017 um 02:24 schrieb Mark Berndt: >>>>>>> When I reboot my leaf system, /var/lib/misc/dnsmasq.leases is lost. >>>>>>> >>>>>>> I added it to my local config so it is saved, but of course this only >>>>>>> happens when save the config. >>>>>>> >>>>>>> What is the best way to preserve this information between reboots? >>>>>> The easiest way is to add it to /vart/lib/lrpkg/local.local >>>>>> >>>>>> cheers >>>>>> >>>>>> ET >>>>> Thanks John & ET. >>>>> How do I save the config from the command line, I want to put it in the >>>>> stop script. Is it possible to just save the local data, not the whole >>>>> config?> >>>> What is local data if not the config. >>>> >>>> To save from the command line have a look at the apkg parameters. >>>> >>>> cheers >>>> >>>> ET >>>> > > > > ------------------------------ > > Message: 2 > Date: Thu, 26 Jan 2017 15:28:35 +0200 > From: Andrew <ni...@seti.kr.ua> > Subject: Re: [leaf-user] saving dnsmasq.leases on reboot > To: leaf-user@lists.sourceforge.net > Message-ID: <4aa08ed9-ffe7-aea7-fb91-03c46990f...@seti.kr.ua> > Content-Type: text/plain; charset=windows-1252; format=flowed > > Hi. > > The best solution will be set shall renew time and big lease time - but > it seems like dnsmasq doesn't support renew time specifying... > > You may try to use some persistent-mounted partition that will store > your leases (not a perfect solution, but it's suitable if this isn't a > boot partition). > > Or you can try to add persistent IP records to dnsmasq config. > > On 26.01.2017 11:22, Mark Berndt wrote: >> On Tue, 24 Jan 2017 03:35:17 PM John Sager wrote: >>> I think he wants to save it before every reboot rather than manually. >> yes, that is correct - I want to be able to save the ephemeral data that is >> not permanent configuration. >> >>> That would need a crafted script to save it (probably from local.stop), and >>> then reload it on boot up & make sure dnsmasq picked it up. You could put >>> the script in /root as everything there is saved to configdb.lrp. However if >>> the router just died on a power failure then you would end up with an old >>> leases file when it rebooted. Would that be a problem? >> I don't really see a problem with an old file, because the dhcp is fairly >> stable here. >> >> The problem I get now is that I have no leases after a router reboot which >> seriously effects my semi-permanent devices such as IP cameras, phone etc. I >> can't set them to a really short lease, because if the router is down I lose >> access to them. >> >> many thanks >> >> Marko >> >> >>> John >>> >>> On 24/01/17 14:48, Erich Titl wrote: >>>> Hi >>>> >>>> Am 23.01.2017 um 22:46 schrieb Mark Berndt: >>>>> On Thu, 19 Jan 2017 04:52:57 PM Erich Titl wrote: >>>>>> Am 19.01.2017 um 02:24 schrieb Mark Berndt: >>>>>>> When I reboot my leaf system, /var/lib/misc/dnsmasq.leases is lost. >>>>>>> >>>>>>> I added it to my local config so it is saved, but of course this only >>>>>>> happens when save the config. >>>>>>> >>>>>>> What is the best way to preserve this information between reboots? >>>>>> The easiest way is to add it to /vart/lib/lrpkg/local.local >>>>>> >>>>>> cheers >>>>>> >>>>>> ET >>>>> Thanks John & ET. >>>>> How do I save the config from the command line, I want to put it in the >>>>> stop script. Is it possible to just save the local data, not the whole >>>>> config?> >>>> What is local data if not the config. >>>> >>>> To save from the command line have a look at the apkg parameters. >>>> >>>> cheers >>>> >>>> ET >>>> >> ------------------------------------------------------------------------------ >> Check out the vibrant tech community on one of the world's most >> engaging tech sites, SlashDot.org! http://sdm.link/slashdot >> ------------------------------------------------------------------------ >> leaf-user mailing list: leaf-user@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/leaf-user >> Support Request -- http://leaf-project.org/ > > > > > ------------------------------ > > Message: 3 > Date: Thu, 26 Jan 2017 14:48:34 +0100 > From: Erich Titl <erich.t...@think.ch> > Subject: Re: [leaf-user] saving dnsmasq.leases on reboot > To: leaf-user@lists.sourceforge.net > Message-ID: <63d553f2-d92c-a41f-0952-0d031e4f6...@think.ch> > Content-Type: text/plain; charset="utf-8" > > Hi > > Am 26.01.2017 um 14:18 schrieb David M Brooke: > ... >> To Eric?s point from before, using Static Leases (via dhcp-host= in >> /etc/dnsmasq.conf) >> ensures a device is given the same IP address consistently, but dnsmasq >> doesn?t seem >> to add the host to DNS unless there?s an *active* DHCP lease in effect. > Set a very short lease time for these important devices. If dnsmasq does > not support this then think about another dhcp daemon and add the leases > to /etc/hosts automagically. This here makes me feel like dnsmasq's dhcp > capabilities show some shortcomings, but then. > > cheers > > Erich > > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: smime.p7s > Type: application/pkcs7-signature > Size: 1928 bytes > Desc: S/MIME Cryptographic Signature > > ------------------------------ > > Message: 4 > Date: Thu, 26 Jan 2017 16:09:27 +0100 > From: Bob von Knobloch <b...@vknobloch.de> > Subject: Re: [leaf-user] saving dnsmasq.leases on reboot > To: leaf-user@lists.sourceforge.net > Message-ID: <537cef88-5c94-40d8-c7b8-7e115cbca...@vknobloch.de> > Content-Type: text/plain; charset=windows-1252; format=flowed > > On 26/01/17 14:48, Erich Titl wrote: >> Hi >> >> Am 26.01.2017 um 14:18 schrieb David M Brooke: >> ... >>> To Eric?s point from before, using Static Leases (via dhcp-host= in >>> /etc/dnsmasq.conf) >>> ensures a device is given the same IP address consistently, but >>> dnsmasq doesn?t seem >>> to add the host to DNS unless there?s an *active* DHCP lease in effect. >> Set a very short lease time for these important devices. If dnsmasq does >> not support this then think about another dhcp daemon and add the leases >> to /etc/hosts automagically. This here makes me feel like dnsmasq's dhcp >> capabilities show some shortcomings, but then. >> >> cheers >> >> Erich > Look at the dnsmasq option (from the manpage): > > -K, --dhcp-authoritative > Should be set when dnsmasq is definitely the only DHCP server on a > network. For DHCPv4, it changes the behaviour from strict RFC compliance > so that DHCP requests on unknown leases from unknown hosts are not > ignored. This allows new hosts to get a lease without a tedious timeout > under all circumstances. It also allows dnsmasq to rebuild its lease > database without each client needing to reacquire a lease, if the > database is lost. For DHCPv6 it sets the priority in replies to 255 (the > maximum) instead of 0 (the minimum). > > Maybe this could help? > > Cheers, > > Bob ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot ------------------------------------------------------------------------ leaf-user mailing list: leaf-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-user Support Request -- http://leaf-project.org/
