[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
This issue has been verified to work both on upgrade and fresh install, and has been QA'd. Marking verification-done. ** Tags removed: verification-needed ** Tags added: verification-done -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
Hello Christian, or anyone else affected, Accepted maas into utopic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/maas/1.7.5+bzr3369-0ubuntu1~14.10.1 in a few hours, and then in the -proposed repository. Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users. If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision. Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance! ** Tags added: verification-needed -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
This bug was fixed in the package maas - 1.7.0+bzr3299-0ubuntu2 --- maas (1.7.0+bzr3299-0ubuntu2) vivid; urgency=medium * debian/maas-common.postinst: Ensure that the maas user gets its home directory created in /var/lib/maas. (LP: #1399016) -- Andres Rodriguez andres...@ubuntu.com Thu, 04 Dec 2014 12:24:18 -0500 ** Changed in: maas (Ubuntu) Status: Confirmed = Fix Released -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
** Changed in: maas Status: Fix Committed = Fix Released -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
This was confirmed fixed today by Juan Ciarlante and will go out with 1.7.0. Fantastic! -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
** Branch linked: lp:~gmb/maas/backport-restrict-to-slash-16-1.7 -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
** Branch linked: lp:~andreserl/maas/pkg_rc1_bzr3285 -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
** Branch linked: lp:~andreserl/maas/pkg_rc1_bzr3294 -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
** Branch linked: lp:~gmb/maas/restrict-dynamic-range-to- slash-16-bug-1382190 -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
** Branch linked: lp:~gmb/maas/backport-generate-directives-to-1.7 -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
** Changed in: maas Status: In Progress = Fix Committed ** Branch linked: lp:~gmb/maas/generate-dns-for-dynamic-pool-bug-1382190 -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
Using $GENERATE statements, I get the following results: /16 dynamic range: 10.0.0.1 - 10.0.255.255 - Reverse Zone: http://paste.ubuntu.com/8721352/ - Forward Zone: http://paste.ubuntu.com/8721358/ /24 dynamic range: 10.0.0.1 - 10.0.0.255 - Reverse zone: http://paste.ubuntu.com/8721363/ - Forward zone: http://paste.ubuntu.com/8721366/ /25 dynamic range: 10.0.0.128 - 10.0.0.255 - Reverse zone: http://paste.ubuntu.com/8721391/ - Forward zone: http://paste.ubuntu.com/8721403/ Weird dynamic range: 10.0.0.1 - 10.0.1.33: - Reverse zone: http://paste.ubuntu.com/8721501/ - Forward zone: http://paste.ubuntu.com/8721503/ Note that there's what looks like a weird inefficiency in the /24 (1-255) and others. That's because I'm using netaddr.IPRange() internally to create an IP range to work from, and then converting that into a set of IPNetworks to ensure we get full coverage of weird corner-case networks (and so that I don't have to do all the maths myself). Thing is, .1-.255, although we identify it as a /24 by sight, isn't actually a /24; it's only 254 addresses, so IPRange breaks it down into individual CIDRs rather than just covering it with a /24. It's a weirdness we can live with, I think. For a /16/ we still see only 260-odd $GENERATES as opposed to 65,000 which I'd call an improvement :). -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
I like this! I would like it even more if we found a way to avoid multiple GENERATEs for /24s. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
Status changed to 'Confirmed' because the bug affects multiple users. ** Changed in: maas (Ubuntu) Status: New = Confirmed -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
** Changed in: maas Status: Triaged = In Progress -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
Ah, so, the light of day: $GENERATE is only useful for networks with an address range /24 — i.e. up to 255 addresses. After that it breaks down, because: $GENERATE 1-254 $.$.0.10.in-addr.arpa. IN PTR no-name-yet-$.$.maas. Only generates 255 addresses; it's not recursive. You just get 10.10.0.10.in-addr.arpa. 300 IN PTR no-name-yet-10-10.maas. 100.100.0.10.in-addr.arpa.300 IN PTR no-name-yet-100-100.maas. 101.101.0.10.in-addr.arpa.300 IN PTR no-name-yet-101-101.maas. 102.102.0.10.in-addr.arpa.300 IN PTR no-name-yet-102-102.maas. 103.103.0.10.in-addr.arpa.300 IN PTR no-name-yet-103-103.maas. 104.104.0.10.in-addr.arpa.300 IN PTR no-name-yet-104-104.maas. 105.105.0.10.in-addr.arpa.300 IN PTR no-name-yet-105-105.maas. Etc. Which means that for a /16 we'd need 256 $GENERATEs; for a /8, 65536 of them. That's… suboptimal. Options: 1. We could say We'll generate PTR records for /24 dynamic ranges only. Advantages: Pretty easy to do Disadvantages: We're forcing users into a particular configuration. 2. We limit the dynamic range to /16 for IPv4 (similar to before when we enforced a /16 network). Advantages: 256 lines isn't the *worst*, performance wise, so we could probably get away with it. Disadvantages: We still have to write those 256 lines on every deployment. 3. We add the PTR record when we parse the DHCP lease Advantages: No bloat; pretty much as we already do now for static IPs. Disadvantages: Noticeable lag between the node acquiring a lease and getting a PTR. None of these options is lovely. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
(I'd say that option 3 is the most tasteful, as long as we can solve the lag problem). -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
I think #1 is too limited. This will only satisfy a subset of users, and it's confusing to an outsider trying to deploy their charms, why won't RabbitMQ deploy in cluster $x when it deploys fine in cluster $y?. The answer is not easily discoverable, and the MAAS administrator may not realise that the size of the cluster's network is relevant to the frustrated user unless he/she has fully understood the release notes. The lag in #3 may cause hard to diagnose problems. There are also a lot more moving parts to line up. I say go for #2. Rendering 256 lines is a tiny blip in performance, especially compared to rendering ~65k lines without $GENERATE. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
I don't think #3 is that bad actually; remember that's how we used to do it before static IP days so it's tried and tested (although admittedly the DNS was in place by the time commissioning ended). #2 is also good, but you have to calculate which lines to generate based on the netmask. I'd go for #2 on balance. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
Let's try #2, though we will need to limit the size of the dynamic range as part of that. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
Re: [Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
On 23 October 2014 11:04, Julian Edwards 1382...@bugs.launchpad.net wrote: I don't think #3 is that bad actually; remember that's how we used to do it before static IP days so it's tried and tested (although admittedly the DNS was in place by the time commissioning ended). Yeah, #3 doesn't work for the use case of LXC containers that come up relatively quickly, aren't going through commissioning, and just want to Get Stuff Done. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
Andres and I have discussed this further, and he pointed out that the LXCs can take a *long* time to start. That would be sufficient time for us to parse the leases file and update the DNS with a PTR for the new node (option #3). I've tested this out locally. The LXC container took ~30minutes to start from `juju deploy mysql --to lxc:0`, and it acquired an IP address ~5 minutes before the juju agent showed as started. It was another 5 minutes until the mysql unit showed as started. This is more than enough time for us to create DNS entries for the container, with a hostname either based on its IP address (e.g. maas- dynamic-1.maas) or based on the client-hostname field in the lease (e.g. juju-machine-0-lxc-0-dynamic.maas). The second is more meaningful, but it's also more code. Andres and I agreed that this was a better solution than #2 above. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
** Branch linked: lp:~gmb/maas/add-ptr-records-bug-1382190 -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
Re: [Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
On Thursday 23 Oct 2014 15:40:51 you wrote: Andres and I have discussed this further, and he pointed out that the LXCs can take a *long* time to start. That would be sufficient time for us to parse the leases file and update the DNS with a PTR for the new node (option #3). I've tested this out locally. The LXC container took ~30minutes to start from `juju deploy mysql --to lxc:0`, and it acquired an IP address ~5 minutes before the juju agent showed as started. It was another 5 minutes until the mysql unit showed as started. I bet it was quicker for the next one, right? The first one that is done ends up downloading the lxc images. This is more than enough time for us to create DNS entries for the container, with a hostname either based on its IP address (e.g. maas- dynamic-1.maas) or based on the client-hostname field in the lease (e.g. juju-machine-0-lxc-0-dynamic.maas). The second is more meaningful, but it's also more code. Andres and I agreed that this was a better solution than #2 above. Assuming that the juju seeding part is taking up all the time after the LXC comes up, this is indeed a better solution. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
Well, whatever we do let's please not race with the lxc creation. That would be worse than fixing this bug. :) -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
We've agreed that as a fix for the problem — since it's going to potentially break a lot of charms on customer deployments — we're going to put PTR records back in for dynamic-pool IP addresses. I'm going to investigate using the bind GENERATE directive to make this simpler [1]. [1] http://www.thedumbterminal.co.uk/?action=showArticlearticleId=116 ** Changed in: maas Status: Incomplete = Triaged ** Changed in: maas Assignee: Julian Edwards (julian-edwards) = Graham Binns (gmb) -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
I started out by poking the $GENERATE directive into my reverse zone file manually: ; Zone file modified: 2014-10-21 18:24:59.654931. ; Note that the modification time of this file doesn't reflect ; the actual modification time. MAAS controls the modification time ; of this file to be able to force the zone to be reloaded by BIND. $TTL300 @ INSOA maas. nobody.example.com. ( 000260 ; serial 600 ; Refresh 1800 ; Retry 604800 ; Expire 300 ; TTL ) IN NS maas. $GENERATE 1-100 $.0.0.10.in-addr.arpa. IN PTR no-name-yet-$.maas. 129.0.0.10.in-addr.arpa. IN PTR devoted-minute.maas. 128.0.0.10.in-addr.arpa. IN PTR dismayed-clown.maas. This works perfectly: graham@dodger:~⟫ dig +noall +answer -x 10.0.0.128 @10.0.0.1 128.0.0.10.in-addr.arpa. 300IN PTR dismayed-clown.maas. graham@dodger:~⟫ dig +noall +answer -x 10.0.0.129 @10.0.0.1 129.0.0.10.in-addr.arpa. 300IN PTR devoted-minute.maas. graham@dodger:~⟫ dig +noall +answer -x 10.0.0.100 @10.0.0.1 100.0.0.10.in-addr.arpa. 300IN PTR no-name-yet-100.maas. So, now all we need to do is have the DNSReverseZoneConfig add this for the dynamic range (I say all we need to do; obviously that's 1 task, but I'll divide it up in the morning). -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
I think this will work for IPv6 too, but as Kiko pointed out on IRC so will wildcards — the main reason I'd like to stick with $GENERATE for both is that it's one less bit of code to write ;) -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
Re: [Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
On 22 October 2014 22:03, Graham Binns graham.bi...@canonical.com wrote: This works perfectly: Awesome, that's great. Sort of brain-dump follows: How does this work for networks that don't line up with IPv4 octets? For example, for a dynamic range that covers 192.168.0.0/23, would we need to write the following? $GENERATE 1-254 $.0.168.192.in-addr.arpa. IN PTR no-name-yet-$.maas. $GENERATE 1-254 $.1.168.192.in-addr.arpa. IN PTR no-name-yet-$.maas. A /16 would need 256 lines. Is this expanded macro-like within BIND, or is it compiled into a rule? It may make a difference to performance. I assume we'll do this only for IPv4? If it's compiled to a rule, we /could/ do it for IPv6 too, but that may be a slope down which we don't want to slip. Ultimately we want to steer people towards reserving IP addresses via MAAS's API. Is this enough to satisfy RabbitMQ? Some services like to make sure that they can round-trip through DNS, i.e. that the PTR record resolves to a name that then resolves back to the starting address. We could choose the prefix to encourage people to reserve addresses. For example, dynamic-$, anon-$, temporary-$, or do-not-use-$, in order of severity. Unfortunately this is bikeshed territory, so I'm going to put myself out of the running by voting for do-not-rely-on-this-you-get-to-keep-the-pieces-and-give-me-one-million-dollars-$. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
Re: [Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
On 22 October 2014 23:19, Gavin Panella gavin.pane...@canonical.com wrote: On 22 October 2014 22:03, Graham Binns graham.bi...@canonical.com wrote: This works perfectly: Awesome, that's great. Sort of brain-dump follows: How does this work for networks that don't line up with IPv4 octets? For example, for a dynamic range that covers 192.168.0.0/23, would we need to write the following? $GENERATE 1-254 $.0.168.192.in-addr.arpa. IN PTR no-name-yet-$.maas. $GENERATE 1-254 $.1.168.192.in-addr.arpa. IN PTR no-name-yet-$.maas. A /16 would need 256 lines. If I'm reading [1] right (and I may not be; it's late), we could do something like this: $GENERATE 1-254 $.$.0.10.in-addr.arpa. IN PTR no-name-yet-$.$.maas. But a quick check of that on my local MAAS suggests it doesn't work. I'll dig further tomorrow. Is this expanded macro-like within BIND, or is it compiled into a rule? It may make a difference to performance. AFAICT, it's expanded rather than compiled into a rule. I assume we'll do this only for IPv4? If it's compiled to a rule, we /could/ do it for IPv6 too, but that may be a slope down which we don't want to slip. Ultimately we want to steer people towards reserving IP addresses via MAAS's API. True. That said, if we fix this for v6 too it means that some very nasty hacks in charms can be canned, and that's not a terrible thing for our users. If it's easy to do, I say we might as well be consistent. If v6 causes (as I suspect it will) considerable headaches here, then we'll stick with v4 and push for everyone to use APIs as they should be doing. Is this enough to satisfy RabbitMQ? Some services like to make sure that they can round-trip through DNS, i.e. that the PTR record resolves to a name that then resolves back to the starting address. I haven't checked that out yet, but it's a good point. We could always use $GENERATE to generate the forward zone too, though, if your first point doesn't make that entirely onerous. We could choose the prefix to encourage people to reserve addresses. For example, dynamic-$, anon-$, temporary-$, or do-not-use-$, in order of severity. Unfortunately this is bikeshed territory, so I'm going to put myself out of the running by voting for do-not-rely-on-this-you-get-to-keep-the-pieces-and-give-me-one-million-dollars-$. use-this-at-your-peril-$.maas. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
Re: [Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
On 22 October 2014 23:56, Graham Binns graham.bi...@canonical.com wrote: $GENERATE 1-254 $.$.0.10.in-addr.arpa. IN PTR no-name-yet-$.$.maas. But a quick check of that on my local MAAS suggests it doesn't work. I'll dig further tomorrow. Nope, scratch that, it works fine. Well, named-checkzone generates a perfectly valid set of rules, but strangely the reverse lookup itself doesn't work. Definitely more poking to be done on the morrow. For a /23 (or some other such fun thing), yes, I think we'd have to write $GENERATE 1-254 $.0.168.192.in-addr.arpa. IN PTR no-name-yet-$.maas. $GENERATE 1-254 $.1.168.192.in-addr.arpa. IN PTR no-name-yet-$.maas. Again. More `dig`ing (geddit?) tomorrow. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
Re: [Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
On Wednesday 22 Oct 2014 23:18:24 you wrote: On 22 October 2014 23:56, Graham Binns graham.bi...@canonical.com wrote: $GENERATE 1-254 $.$.0.10.in-addr.arpa. IN PTR no-name-yet-$.$.maas. But a quick check of that on my local MAAS suggests it doesn't work. I'll dig further tomorrow. Nope, scratch that, it works fine. Well, named-checkzone generates a perfectly valid set of rules, but strangely the reverse lookup itself doesn't work. Definitely more poking to be done on the morrow. For a /23 (or some other such fun thing), yes, I think we'd have to write $GENERATE 1-254 $.0.168.192.in-addr.arpa. IN PTR no-name-yet-$.maas. $GENERATE 1-254 $.1.168.192.in-addr.arpa. IN PTR no-name-yet-$.maas. Again. More `dig`ing (geddit?) tomorrow. See the related bug 1356012 about that. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
I think this is a dupe of bug 1274947. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
** Changed in: maas Status: New = Incomplete -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
I agree: this is a clear-cut case for the request-an-address API, but we still lack a request-a-hostname API. Out of curiosity, how did the existing setup(s) obtain these generated hostnames in the first place? To my knowledge they were neither exposed nor documented. MAAS never had much control over which non-node client got which address from DHCP, and that's why we had to re-work DHCP management. These old generated hostnames were no more stable than the IP addresses were: if the container moved to a different IP address, it would also move to a different hostname. So if at all possible, I would address the problem in two discrete steps: 1. Use the container's IP address, not its hostname. It should be about as stable as the hostname was. 2. Request a static IP through the MAAs API, and configure it statically on the container. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
Ah, I see that using the IP address is not an option in this case. So we'll have to add a way to manage DNS entries. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
Out of curiosity, how did the existing setup(s) obtain these generated hostnames in the first place? To my knowledge they were neither exposed nor documented. As Jeroen said, we need to understand this in order to suggest a solution that fits CTS' needs. My guess is that they where deriving the hostname from the IP address manually, having observed the pattern that MAAS uses. Agreed that the path of least resistance at this stage is to improve the new reserve IPAPI to include a hostname and use that in Juju. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
To clarify what's happening with the rabbitmq charm: for its units to be able cluster together, they need to refer to each other by hostname, see [0] which was done based on the observed pattern as per #4,#7 comments above. [0] https://code.launchpad.net/~jjo/charms/trusty/rabbitmq-server/fix- nodename-to-host-dns-PTR -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
As a workaround, can the charm add hostnames for each node in the cluster to /etc/hosts? -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
1.7beta generated named PTR file (fyi all entries there correspond to metal hosts): http://paste.ubuntu.com/8575506/ -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
** Also affects: maas Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
Targeting to 1.7 and assigning to Julian to see what can be done about it. ** Changed in: maas Milestone: None = 1.7.0 ** Changed in: maas Importance: Undecided = Critical ** Changed in: maas Assignee: (unassigned) = Julian Edwards (julian-edwards) -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
So I've looked at this and I think it needs to be a won't-fix as it stands, but I want your opinion first because there's something else MAAS should be doing. LXCs have never been supported as a first class citizen in MAAS, so the fact that a non-MAAS node obtained an IP with a DNS entry is a little bit of a side effect of how it was previously implemented. The DNS entries from dynamically assigned DHCP IPs are dangerous because they can go out of date at any time and MAAS has no way to track that in a timely fashion, and in fact this is exactly what was happening in OIL which pushed us to doing the static IP solution. MAAS has an API to request an IP address separately to whatever the nodes may get assigned. It was intended that juju-created LXCs use this API to get an IP and configure the LXC network interface(s) appropriately. What's missing from MAAS's API is that the IPs obtained on the API don't have the option of being given a DNS entry. If we fix that, and then juju starts using the API, everything will be working perfectly. Let me know what you think. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
[Bug 1382190] Re: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries
Also FTR it's not the static IP work that left LXCs without PTRs, it's the fact that we used to pre-generate the whole zone with fake host names and used CNAMEs for any nodes that MAAS knew about. That came with a raft of its own problems (some charms failed because CNAMEs- IP - reverse lookup - different A record) and IP ranges were limited to /16 because otherwise it took a long time to write the zone every time. There is no doubt that juju needs to move to use the new API. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to maas in Ubuntu. https://bugs.launchpad.net/bugs/1382190 Title: LXCs assigned IPs by MAAS DHCP lack DNS PTR entries To manage notifications about this bug go to: https://bugs.launchpad.net/maas/+bug/1382190/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
