[03:26] <michael2> hi all. does anyone know how to get a load average with  `sar' command?
[03:36] <xtuh> Hello, need some assistance with mdadm / fstab . i have 18.04 server, sda for system, sdb and scd as raid0 md0 device. the first problem is after reboot md0 became md127, is it ok? or i need start over?
[04:14] <sarnold> michael2: no, but here's some reading that you may enjoy http://www.brendangregg.com/Articles/Netflix_Linux_Perf_Analysis_60s.pdf http://www.brendangregg.com/USEmethod/use-linux.html
[06:16] <neildugan> I have setup a server using the 'ubuntu-server' meta package... I am trying to get netplan to create a bridge with a static IP... the method used in every doc. I have found doesn't seem to work... can anyone help here.  The "addresses: [<IP_ADDRESS>/16]" doesn't seem to do anything
[10:20] <rbasak> cpaelzer: did you get an error running "git ubuntu merge start" on your ntp merge?
[12:10] <rbasak> nacc: looks like dpkg-parsechangelog eliminates duplicates, but debian.changelog.Changelog does not. The assertion check caught this for ntp. I have a minimal test case. Additionally I found that the assertion check has an edge case bug when trying to prepare a test case.
[12:11] <rbasak> So I now have two bugs: one where the assertion check fails to assert, and the underlying issue when it does assert due to a duplicate.
[12:11] <rbasak> This is a bit mind bending so I thought I'd share. I'm wondering how to proceed.
[12:11] <rbasak> Use case: git ubuntu merge start fails on ntp because of a historical changelog error
[12:11] <rbasak> In that case it doesn't really matter that the two implementations mismatch
[12:12] <rbasak> However this kind of difference is why we wrote the assertion check in the first place
[12:12] <rbasak> Does this difference affect our algorithm?
[12:40] <m27> Question: is fail2ban supposed to work out of the box? (without any configuration)
[13:16] <cyphermox> neildugan: have you looked at https://netplan.io/examples#bridging ?
[13:17] <cyphermox> neildugan: otherwise you should paste your entire netplan config so we can look at it
[13:45] <Ussat> o/ morning
[13:46] <Ussat> I am REALLY starting to like netplan :)
[13:52] <blackflow> It's awesome, isn't it!
[13:53] <Ussat> yes
[13:54] <Ussat> just took some getting used to
[13:58] <LambdaComplex> hi #ubuntu-server. i have another fun problem. i just tried resizing my ubuntu's / partition (ext4) using centos 7, but resize2fs failed because the filesystem apparently has "unsupported feature(s)"
[13:58] <LambdaComplex> any ideas of which feature(s) could/would be causing this problem?
[13:58] <LambdaComplex> (not sure if i should be asking here or a centos channel tbh...but i assume this place will know more about what features ubuntu uses for ext4 by default)
[14:00] <sdeziel> LambdaComplex: that's a known thing, let me find the bug
[14:01] <LambdaComplex> sdeziel: i found something on the centos mailing list but it devolved into bikeshedding over updating for reboots
[14:01] <LambdaComplex> and i don't think a conclusion was ever reached wrt the original topic
[14:02] <sdeziel> LambdaComplex: https://lists.ubuntu.com/archives/ubuntu-server/2018-March/007671.html
[14:03] <sdeziel> ext4 feature 'metadata_csum'
[14:03] <Ussat> gpartd
[14:04] <sdeziel> LambdaComplex: that said, I always resize the root FS live
[14:04] <LambdaComplex> sdeziel: lol, you said that right as my coworker messaged me something about metadata_csum
[14:04] <LambdaComplex> so i'd say that's definitely the thing
[14:05] <sdeziel> LambdaComplex: so if the partition boundary is moved already (CentOS was probably able to do that part), I'd boot on 18.04 then run "resize2fs /dev/fooX"
[14:05] <sdeziel> live resize never failed me
[14:22] <sandstrom> I'm upgrading from 16.04 to 18.04 and wrestling with systemd-resolved. I need to forward requests under one FQDN to a local DNS server, all other requests should go to the DNS acquired via DHCP. I had this working with dnsmasq previously, but doesn't work after upgrading. Is DNS forwarding per FQDN/domain possible with systemd-resolved? Or do I need to disable it and use dnsmasq only?
[14:23] <sandstrom> If I do disable it, how can I ensure that dnsmasq is setup with the DHCP-acquired dns-server (which I assume may change from time to time)?
[14:25] <sdeziel> sandstrom: systemd-resolved supports per domain forwarders
[14:25] <sdeziel> dunno how to configure it that way though
[14:25] <sandstrom> @sdeziel sounds awesome :)
[14:26] <sandstrom> @sdeziel I've looked through the docs, haven't found anything
[14:28] <sandstrom> @sdeziel there is support for search domains, but that is something else
[14:31] <sdeziel> sandstrom: hmm, maybe I was wrong. systemd-resolved supports per-link resolvers/forwarders
[14:31] <sdeziel> sandstrom: not sure anymore about the per domain
[14:32] <sandstrom> @sdeziel Yeah, I didn't find anything in `man resolved.conf` at least
[14:32] <sandstrom> @sdeziel guess I'll just have to bypass systemd-resolved entirely
[14:33] <sdeziel> sandstrom: have you tried a systemd specific channel?
[14:34] <sandstrom> @sdeziel know of any?
[14:34] <sandstrom> I'll try in #systemd
[14:35] <sdeziel> sandstrom: that's where I'd go ;)
[14:35] <LambdaComplex> cyphermox: my coworker wants to know how he can make netplan "put up a bridge containing only a vlan interface with no addresses assigned?"
[15:35] <Ussat> WAT ?
[15:47] <cyphermox> LambdaComplex: right not, you can't, unless you add another .network file setting ConfigureWithoutCarrier=yes
[15:48] <cyphermox> I'm fixing that very very soon, working on a new release right now
[15:51] <sdeziel> cyphermox: that's good to hear cause I was also missing that feature
[15:59] <cpaelzer> rbasak: I hit all sort of errors during merges
[15:59] <cpaelzer> rbasak: none that I'd not have reported already in one or another form
[15:59] <cpaelzer> rbasak: not sure if the one I hit on ntp was on merge start or later
[16:00] <cpaelzer> rbasak: I quite often have to do the rebase again, which seems due to old merge tags being around
[16:00] <cpaelzer> I haven't proven yet what the source is e.g. how to trigger
[16:00] <cpaelzer> but in those cases I do the rebase myself, and have to take out ALL history until it starts at the right place
[16:00] <cpaelzer> so something at the parenting seems to be mixed up
[16:01] <cpaelzer> rbasak: mostly I hit the "error has to be clean" when creatin logical tags
[16:01] <cpaelzer> in those cases I create it myself
[16:03] <nacc> rbasak: do you have a log?
[16:10] <rbasak> nacc: I can produce one but I'm confident I know exactly what's going on
[16:10] <rbasak> nacc: I intend to write it all up in a bug
[16:10] <rbasak> With minimal reproducers etc
[16:11] <rbasak> nacc: minimal test case: http://paste.ubuntu.com/p/6D3VpsshrP/
[16:11] <rbasak> nacc: minimized reproducer: https://pastebin.ubuntu.com/p/XZsc8g2Frr/
[16:12] <rbasak> nacc: in the assertion, "zip" throws away the end of the longer input, so the minimal test case needs the fourth changelog entry to trip it up. I think that's a bug in the assertion code.
[16:12] <rbasak> I've come to the conclusion that it doesn't matter for the importer, but I'll double check.
[16:13] <rbasak> Since the changelog parent is defined as the first occurance that matches, the issue of a second match never comes up
[16:13] <rbasak> So I think what I'll do is fix and relax the assertion
[16:13] <rbasak> If the assertion dedupes both input lists before asserting, then the assertion will still pass and detect any other mismatch problems
[16:14] <rbasak> While explicitly accepting this particular class of mismatch
[16:16] <rbasak> To be clear, that means I think there are two things that need fixing.
[16:16] <rbasak> 1) Relaxation of the assertion to allow a duplicates-exist vs. deduped difference assuming that we all conclude that this is safe.
[16:17] <rbasak> 2) Fixing of the assertion in the zip truncation case that causes the comparison to fail to assert with only the first three changelog entries in my example.
[16:17] <nacc> rbasak: ack
[18:58] <granjero> hi, i got a question. Ubuntu server 18.04. I see /etc/network/interfaces is gone.  I'm reading about netplan. I got a file on /etc/netplan called 50-cloud-init-yaml. Is the only file in that directory. It has a comment that says that changes on that file will not be persistent. I want to fix a static ip address.
[18:58] <granjero> Do i have to delete that file and create a new one with sudo netplan generate?
[18:59] <sarnold> it's probably worth spending a few minutes skimming the website if this is your itnroduction to netplan https://netplan.io/
[19:00] <granjero> will do sarnold
[19:00] <granjero> thnx
[19:00] <Buoy172> how do I check my ubuntu server version?
[19:01] <genii> cat /etc/issue
[19:16] <genii> sarnold: Added !netplan just now, for future reference
[19:16] <sarnold> genii: thanks
[19:16] <genii> np
[19:25] <nacc> rbasak: did have a thought about your test case
[19:26] <nacc> rbasak: 1) I'm not sure that Ubuntu will let you do that, if those are all actually published, as 3 would be published with different contents
[19:27] <nacc> rbasak: 2) if it is allowed we should see a reimport tag, and two distinct entries, but I think with my branch that should all work (when we see the second 3, we'd create a reimport tag)
[19:28] <cyphermox> granjero: you can modify that file, the mention that it's not persistent is essentially a lie.
[19:28] <cyphermox> or you can delete and create a new one, but you shouldn't use 'netplan generate'; use 'sudo netplan apply' instead
[19:28] <nacc> rbasak: meanwhile, did you figure out with kyrofa what is going on with 430?
[19:29] <cyphermox> genii: thanks!
[19:32] <nacc> rbasak: also afaict, ntp's `git ubuntu merge start` failure has nothing to do with this code? rather confused
[19:32] <nacc> I see a failed cherry-pick
[19:34] <nacc> oh i know why this happened, I think
[19:34] <nacc> after the reimport, our merge logic might need adjusting
[19:35] <Ussat> FYI I am VERY happy with netplan
[19:53] <cyphermox> I'm not
[19:53] <cyphermox> I'd be if I could fix these autopkgtests :)
[19:54] <cyphermox> Ussat: if your config is more than just dhcp or static addresses though I'd be very interested to have a look; see if we can make that a generic example
[20:05] <granjero> cyphermox, thanks. it's confusing thats says that changes to the file will not be persistent. =P will bakup that file and create a new one "config.yaml"
[20:05] <granjero> excuse my english
[20:06] <granjero> it is a bit rusty
[20:06] <cyphermox> granjero: well, it's persistent unless the metadata changes, which depends on what kind of server it is
[20:07] <granjero> also confused about the indentation of the file.
[20:07] <granjero> is there a "tab" then 2 tabs an so on?
[20:08] <dpb1> don't use tabs
[20:10] <dpb1> spaces only
[20:19] <granjero> cyphermox, the name of my ethernet interface comes from the comand ip?
[20:19] <granjero> ip a?
[20:19] <cyphermox> yes
[20:19] <cyphermox> ip link
[20:20] <granjero> great. thanks
[20:21] <rbasak> nacc: o/
[20:21] <rbasak> nacc: git ubuntu merge start --tags-only currently fails on ntp
[20:22] <rbasak> nacc: the root cause I believe is that dpkg-parsechangelog output mismatches the parsing of debian.changelog.whatever
[20:22] <rbasak> nacc: and that fails the assertion
[20:22] <rbasak> The reason for the mismatch is that in the ntp changelog currently in Ubuntu, a changelog entry is duplicated
[20:22] <rbasak> Like it is in my test case
[20:24] <rbasak> nacc: I haven't checked but I suspect that there weren't actually two uploads or anything. It's a changelog transcription error from the uploader probably.
[20:25] <rbasak> Or else it's intentional and represents how the maintainer decided to make something in experimental appear linear, etc.
[20:35] <granjero> cyphermox, worked like a charm!
[20:35] <granjero> thank you very much
[20:35] <granjero> sarnold, thank u too
[20:48] <trippeh_> [   10.020680] mlx4_en: enp2s0: Link Up
[20:48] <trippeh_> [  499.936066] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
[20:48] <trippeh_> well thats not good :p
[20:48] <trippeh_> that is / by the way
[20:50] <nacc> rbasak: uh ... it works fine here
[20:50] <nacc> rbasak: what version of the snap?
[20:50] <nacc> rbasak: r430 is unusable, as you know, so i'm manually on r429
[20:50] <nacc> rbasak: what changelog entry do you see being duplicated?
[20:51] <nacc> rbasak: i'm fairly sure the code you're talking about is completely unused by merge
[20:57] <nacc> rbasak: fresh clone, merge start --tag-only worked fine with r429
[21:00] <nacc> now the rest of `merge start` does not ... but that is what i was referring to earlier
[21:00] <trippeh_> hm. it is blocking in initramfs. could be entropy maybe
[21:03] <Blueking> hello nacc
[21:03] <nacc> Blueking: hey
[21:03] <Blueking> sup ?
[21:04] <nacc> Blueking: ... nothing? you pinged me :)
[21:04] <Blueking> :)
[21:04] <Blueking> got mine xeon E3 'server' fixed :)
[21:04] <nacc> Blueking: nice!
[21:05] <Blueking> had to perform bios flash with ME disabled
[21:30] <trippeh_> strange, it is modprobe ext4 that is blocking??
[21:31] <trippeh_> and it unblocks the second I send it a alt+sysrq (with no sysrq command)
[21:31] <sdeziel> hmm, isn't that always builtin on Ubuntu kernels?
[21:31] <trippeh_> sdeziel: yes. it IS strange ;)
[21:32] <trippeh_> now if I could figure out how to give it a alt-sysrq-l through this POS java thing
[21:33] <trippeh_> of course if it unblocks when I get to alt-sysrq that wont work ha
[21:34] <trippeh_> hitting the keyboard until crng inits does nothing, but alt-sysrq immidiately unblocks it.
[21:35]  * trippeh_ confused
[21:35] <trippeh_> it is a Atom C3758, fwiw
[21:36] <trippeh_> and on cosmic (pretty sure I saw it on bionic too)
[21:41] <nacc> rbasak: heh, it will work properly with our non-merge upload tags
[21:42] <nacc> rbasak: but is pretty broken with our merge ones, and i need to think of how it ever worked
[21:50] <trippeh_> hm on a hunch I started blacklisting drivers during initramfs
[21:50] <trippeh_> blacklisting ixgbe seems to fix it
[21:51] <trippeh_> ..but now it locked up on shutdown hrm ;)
[22:10] <trippeh_> ok I've pretty reliably moved the hangs from boot to shutdown. progress? :P
[22:12] <sarnold> heh, now you just need a reliable way to yank the power ..
[22:15] <trippeh_> the bios is confused about the ixgbe now. there might be a pattern..
[22:16] <genii> sarnold: https://imgs.xkcd.com/comics/hard_reboot.png
[22:17] <sarnold> genii: hehehe :)
[23:06] <nacc> rbasak: cpaelzer: ok i see why merge start failed
[23:06] <nacc> pkg/upload/1%4.2.8p10+dfsg
[23:06] <nacc> bah, pkg/upload/1%4.2.8p10+dfsg-5ubuntu2
[23:06] <nacc> does not have an appropriate import-tag as a parent
[23:07] <nacc> it was based off a point where we had the devel branches separately being merged throughout the history
[23:08] <nacc> thus, `merge start` doesn't see those commits (they are not in the ancestry list) and so the cherry-pick fails
[23:08] <nacc> rbasak: that's the only bug i see with ntp currently
[23:09] <nacc> rbasak: i *think* our new algorithm would reject this upload tag