| === nchambers is now known as god | ||
| === god is now known as nchambers | ||
| === JanC_ is now known as JanC | ||
| === amoralej|off is now known as amoralej | ||
| === _degorenko|afk is now known as degorenko | ||
| jonah | Hi can anyone please help with TCP Wrappers? Are they supported in 16.04 LTS as standard or do I have to install a package? Also how can I check if an application is built to support them? | 11:30 |
|---|---|---|
| jonah | Thanks for any help with this | 11:30 |
| jonah | Is there a way to add tcp-wrappers support into a package with apt or do you have to compile from source to get tcp wrappers? | 11:44 |
| === iberezovskiy|off is now known as iberezovskiy | ||
| === amoralej is now known as amoralej|lunch | ||
| zioproto | Is it the thanksgiving weekend right ? :) I guess most people on holiday ? | 13:59 |
| zioproto | :) | 13:59 |
| zioproto | jamespage: looks like we have another chance to work together https://bugs.launchpad.net/nova/+bug/1644839 | 14:00 |
| ubottu | Launchpad bug 1644839 in OpenStack Compute (nova) "If flavor has more than 32 cpus cannot spawn instance if glance image has hw_vif_multiqueue_enabled='true'" [Undecided,New] | 14:00 |
| AlecTaylor | hi | 14:03 |
| AlecTaylor | Should I place my `.sock`s in `/run` like everyone else, or should I create a new dir like some people, e.g. /softwarename/var/api/api.sock | 14:04 |
| zioproto | Anyone knows how to check the value for MAX_TAP_QUEUES for Kernel 4.4.0-47-generic #68~14.04.1-Ubuntu SMP ? | 14:21 |
| jamespage | zioproto, hello! | 14:24 |
| zioproto | jamespage: hello :) I am dealing with a nice bug in production | 14:25 |
| zioproto | as a workaround I told my use to upload a glance image with hw_vif_multiqueue_enabled='false' | 14:25 |
| zioproto | so he can boot the instance | 14:25 |
| zioproto | but he gets then the slow networking | 14:25 |
| zioproto | the patch is easy, I can rework https://review.openstack.org/#/c/332660/ | 14:26 |
| === amoralej|lunch is now known as amoralej | ||
| zioproto | cloning git clone git://kernel.ubuntu.com/ubuntu/ubuntu-trusty.git to see if MAX_TAP_QUEUES changes from vanilla kernel | 14:28 |
| zioproto | jamespage: the ubuntu kernel is different | 14:36 |
| zioproto | #define MAX_TAP_QUEUES DEFAULT_MAX_NUM_RSS_QUEUES | 14:36 |
| zioproto | this brakes nova | 14:36 |
| zioproto | :( | 14:36 |
| jamespage | zioproto, trusty is 3.13 right? | 14:37 |
| jamespage | oh wait I see you're using the 4.4. kernel | 14:37 |
| zioproto | yes | 14:39 |
| zioproto | so there is this patch in nova that hardcodes some values | 14:39 |
| zioproto | there is also nice reference table of this values, with URL to the git of vanilla kernel | 14:39 |
| zioproto | jamespage: look at this review https://review.openstack.org/#/c/332660/ | 14:40 |
| zioproto | I am runnig this kernel linux-generic-lts-xenial 4.4.0.47.34 | 14:41 |
| jamespage | zioproto, xenial kernel - http://paste.ubuntu.com/23532517/ | 14:43 |
| jamespage | should be defaulting to 256 | 14:43 |
| frickler | jamespage: seems that value is changed when building the kernel for trusty | 14:44 |
| jamespage | hmm | 14:45 |
| zioproto | Linux zhdk0088 4.4.0-47-generic | 14:45 |
| zioproto | how can I check it at runtime ? | 14:45 |
| zioproto | frickler: how you find that out ? | 14:46 |
| jamespage | zioproto, I see the same stanza in drivers/net/tun.c in the xenial HWE branch | 14:49 |
| frickler | zioproto: ah, no, sorry, I was looking at the wrong branch | 14:49 |
| zioproto | Did you guys see my stacktrace in the bug report ? | 14:50 |
| frickler | so according to the comment in baf71c5c1f80d82e92924050a60b5baaf97e3094, this should be good for 256 vCPUs | 14:50 |
| zioproto | but I get | 14:51 |
| zioproto | Invalid number of queues (= 46), must be a postive integer less than 31. | 14:51 |
| frickler | zioproto: just to make sure, you do run on a system with > 32 cpus? | 14:52 |
| zioproto | http://paste.ubuntu.com/23532554/ | 14:53 |
| zioproto | yes because If I remove the multiqueue property from the glance image I am able to boot the instance | 14:53 |
| zioproto | I have 48 CPUs on the sistem | 14:54 |
| zioproto | and now the instance is running | 14:54 |
| zioproto | I told the user | 14:54 |
| jamespage | zioproto, which libvirt version are you using? | 14:55 |
| zioproto | to boot from a different glance image where I decorated the image with hw_vif_multiqueue_enabled='false' | 14:55 |
| zioproto | jamespage: 1.2.16-2ubuntu11.15.10.4~cloud0 | 14:55 |
| frickler | zioproto: so as I workaround maybe try to set the limit in the nova code you referenced to 31 instead of 256 | 14:55 |
| jamespage | actually that message comes from qemu | 14:55 |
| zioproto | frickler: yes that would work but I dont want to carry local patches | 14:55 |
| zioproto | frickler: I need to come up with a solution that will be accepted in openstack upstream | 14:56 |
| zioproto | jamespage: qemu 1:2.3+dfsg-5ubuntu9.4~cloud2 | 14:56 |
| jamespage | give me a sec | 14:58 |
| jamespage | zioproto, yup you're being blocked by qemu | 14:59 |
| frickler | zioproto: maybe the limit 31 31 is imposed by qemu, so nova is wrong in using that kernel value. | 14:59 |
| jamespage | VIRTIO_PCI_QUEUE_MAX == 64 in the version you're using | 15:00 |
| jamespage | 64 /2 -1 | 15:00 |
| jamespage | (VIRTIO_PCI_QUEUE_MAX - 1) / 2 | 15:00 |
| zioproto | jamespage: you rock ! how did you find that out ? | 15:00 |
| cpaelzer | it is surely arch specific, I've had s390 on 64 cpus, but then no PCI there | 15:00 |
| jamespage | zioproto, been poking at qemu today - but 2.7 | 15:00 |
| jamespage | where its 1024 | 15:00 |
| zioproto | I need to update this bug: https://bugs.launchpad.net/nova/+bug/1570631 | 15:01 |
| jamespage | cpaelzer, that constant has a new name | 15:01 |
| ubottu | Launchpad bug 1570631 in nova (Ubuntu) "With hw:vif_multiqueue_enabled, libvirt driver fails with VM larger than 8 vCPU" [Low,Fix released] | 15:01 |
| jamespage | VIRTIO_QUEUE_MAX | 15:01 |
| jamespage | not PIC | 15:01 |
| jamespage | PCI rather | 15:01 |
| jamespage | include/hw/virtio/virtio.h:#define VIRTIO_QUEUE_MAX 1024 | 15:01 |
| jamespage | thats from 2.7.0 | 15:01 |
| cpaelzer | thanks jamespage | 15:01 |
| jamespage | cpaelzer, yw | 15:01 |
| cpaelzer | I just say it is arch specific as I had 64 running already | 15:01 |
| jamespage | cpaelzer, I'm putting qemu in a snap with libvirt | 15:02 |
| cpaelzer | ah thanks, just wondered what you do with that atm | 15:02 |
| jamespage | zioproto, xenial qemu has: | 15:03 |
| jamespage | VIRTIO_QUEUE_MAX | 15:03 |
| jamespage | =include/hw/virtio/virtio.h:#define VIRTIO_QUEUE_MAX 1024 | 15:03 |
| jamespage | zioproto, so this looks like an issue isolated to the liberty UCA version you're using | 15:04 |
| frickler | right, that would mean that nova has to check the qemu version in addition to the kernel version and set its limit accordingly, I guess | 15:04 |
| cpaelzer | zioproto: but x86 HW virt is limited to stay <=HW-cpus IIRC - so you can go to 48, but not test e.g. 256 (maybe that can be tuned thou) | 15:04 |
| frickler | jamespage: MIN_QEMU_VERSION in nova is still at 1.5.3 | 15:04 |
| zioproto | jamespage: should we make a patch just for the ubuntu packages ? | 15:04 |
| jamespage | frickler, youch | 15:04 |
| jamespage | zioproto, for qemu | 15:04 |
| jamespage | ? | 15:04 |
| jamespage | zioproto, or for nova? | 15:05 |
| frickler | jamespage: may be bumped to 2.1.0 for pike iiuc | 15:05 |
| jamespage | \o/ | 15:05 |
| jamespage | that's still not enough for 1024 | 15:05 |
| rbasak | cpaelzer: around? Can I give you an intermediate report on this strongswan merge review? I'd like to talk it over with you before the complexity of our delta makes me lose my mind :) | 15:05 |
| jamespage | rbasak, oh I remember that one | 15:05 |
| rbasak | cpaelzer: http://paste.ubuntu.com/23532604/ are my current notes. | 15:06 |
| cpaelzer | rbasak: I'll get a visitor to teach math to soon, but til then ok | 15:06 |
| rbasak | cpaelzer: hangout? Two minutes. | 15:06 |
| cpaelzer | rbasak: give me two minutes to clean up the next evil merge | 15:06 |
| cpaelzer | rbasak: ok | 15:06 |
| zioproto | jamespage: I guess for nova | 15:06 |
| frickler | zioproto: if you don't come up with something else, I'll propose a patch to nova upstream next week | 15:06 |
| rbasak | Snap :) | 15:06 |
| frickler | gotta run for the weekend now | 15:07 |
| zioproto | I am also on my way to the weekend | 15:07 |
| zioproto | lets meet again here on monday :) | 15:07 |
| rbasak | cpaelzer: https://hangouts.google.com/hangouts/_/canonical.com/strongswan?hl=en-GB&authuser=0 | 15:07 |
| jamespage | zioproto, frickler: have a nice one guys | 15:08 |
| zioproto | bye !! | 15:35 |
| === degorenko is now known as _degorenko|afk | ||
| === iberezovskiy is now known as iberezovskiy|off | ||
| hhee | guys, i have got a server with root enabled by default. how can i turn it off again? | 17:52 |
| genii | hhee: First, make sure you have a user with sudo rights so you don't lock yourself out of the system. If all good there, sudo usermod -L root ...will lock the root again | 18:02 |
| genii | hhee: To make sure it took: sudo grep root /etc/shadow ...and make sure the second field is an exclamation mark, like: root:!: | 18:04 |
| hhee | genii, got it. already create usual user | 18:06 |
| hhee | genii, thx a lot | 18:06 |
| hhee | :) | 18:06 |
| genii | Glad to assist | 18:09 |
| hhee | genii, well another question | 18:15 |
| hhee | seems like i didn't have apropriate record in sudoers file | 18:15 |
| hhee | which way more eight to add user with sudo right? | 18:16 |
| hhee | rights* | 18:16 |
| hhee | got it | 18:21 |
| hhee | ! | 18:21 |
| tarpman | hhee: the usual way in ubuntu/debian is to add the user to the 'sudo' group | 18:22 |
| hhee | tarpman, got it, thx :) | 18:22 |
| tarpman | hhee: usermod -aG sudo username | 18:22 |
| tarpman | ok | 18:22 |
| === amoralej is now known as amoralej|off | ||
| hhee | guys. question. | 18:28 |
| hhee | does ubuntu-server has groups for install software? how can i do it? | 18:28 |
| hhee | for example LAMP and mail server | 18:28 |
| hhee | im reading man apt, but dont see smth similar | 18:30 |
| tarpman | hhee: yes. have a look at tasksel | 18:30 |
| hhee | tarpman, got it. very handy. | 18:32 |
| hhee | one more question. after many command in ssh session i have got something like this - perl: warning: Setting locale failed. | 18:33 |
| hhee | perl: warning: Please check that your locale settings: | 18:33 |
| hhee | after locale command | 18:34 |
| hhee | got - locale: Cannot set LC_CTYPE to default locale: No such file or directory | 18:34 |
| hhee | what i did wrong? | 18:35 |
| tarpman | what's your locale set to? | 18:35 |
| hhee | tarpman, i thought it was utf8 | 18:35 |
| tarpman | (run the locale command with no arguments to get a summary) | 18:35 |
| hhee | tarpman, LANG=en_US.UTF-8 | 18:35 |
| hhee | not set - LANGUAGE= and LANGUAGE= | 18:35 |
| hhee | sorry and LC_ALL= | 18:36 |
| tarpman | hhee: do you have language-pack-en installed | 18:37 |
| hhee | tarpman, cool. got it. i have found http://askubuntu.com/questions/162391/how-do-i-fix-my-locale-issue | 18:39 |
| hhee | tarpman, and there is solutions | 18:39 |
| tarpman | ok | 18:39 |
| hhee | tarpman, big tnx for awesome support. | 18:39 |
| hhee | have a nice day! | 18:39 |
| tarpman | not sure those are the best solutions, but if they work, fine :) | 18:39 |
| hhee | seems like work :) | 18:39 |
| hhee | guys. another quesion about sudo :) | 19:06 |
| hhee | i tried - sudo cat file.conf > file2.conf | 19:07 |
| hhee | bash: file2.conf: Permission denied | 19:07 |
| hhee | which way to do it? | 19:07 |
| tarpman | yes, because 'cat file.conf' runs under sudo, but '> file2.conf' happens in your own shell, outside of sudo | 19:07 |
| tarpman | you want: sudo tee file2.conf < file.conf | 19:08 |
| tarpman | which reads from file.conf in your current shell and writes to file2.conf under sudo | 19:08 |
| hhee | tarpman, cool... thx :) | 19:08 |
| hhee | tarpman, another question | 19:27 |
| hhee | sudo cd /var/log/apache2/ | 19:27 |
| hhee | sudo: cd: command not found | 19:28 |
| hhee | how can i handle this? :) | 19:28 |
| tarpman | hhee: if "cd" did exist as a standalone command, what would it do? | 19:28 |
| tarpman | hhee: your shell would spawn a "sudo" process, which would execute "cd", and then exit | 19:28 |
| tarpman | hhee: meanwhile your shell is exactly where it was, nothing's changed | 19:28 |
| hhee | tarpman, i need some group of command.. i have to think | 19:29 |
| tarpman | hhee: I don't know what you're trying to do. maybe you want to cd /var/log/apache2 and then sudo something in there. or maybe you want to open a root shell (sudo -s or sudo -i) and do stuff in that shell | 19:29 |
| hhee | tarpman, got it. sudo -i what i need | 19:32 |
| hhee | tarpman, thx again :) many times | 19:32 |
| === binia is now known as binia_the | ||
| === binia_the is now known as binia | ||
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