Generally you have to configure the profile of the containers (either by configuring the default profiles or by altering the configuration of a single container and then restarting that container). If there are particular modules that you know you will need then you can use "linux.kernel_modules" to ensure that those modules are loaded before the container starts (because you cannot load modules from inside the container).
I'm not entirely sure how you get /lib/modules to be present. It may be that setting kernel_modules is sufficient and it will cause those directories to be available, or more likely you'll want to do something like bind mount the host's /lib/modules into the container (which you can also do via the profile). This is more a question about how to operate LXD than Juju, so I'm a little unclear about some of the details. I'll refer you to some nice blog posts from Stephane Graber who drives LXD development https://stgraber.org/2016/03/11/lxd-2-0-blog-post-series-012/ Openstack happens to be one of the more complex things to run inside containers, so tends to have a lot of details about loading modules, etc: https://stgraber.org/2016/10/26/lxd-2-0-lxd-and-openstack-1112/ John =:-> On Sun, Jul 2, 2017 at 4:56 PM, N. S. <n5pas...@hotmail.com> wrote: > Hi again, > > Another challenge related to same issue of empty /lib/modules from another > LXC. > > make[4]: *** /lib/modules/4.8.0-56-lowlatency/*build*: No such file or > directory. Stop. > CMakeFiles/ue_ip.dir/build.make:60: recipe for target 'ue_ip.ko' failed > make[3]: *** [ue_ip.ko] Error 2 > CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/ue_ip.dir/all' > failed > make[2]: *** [CMakeFiles/ue_ip.dir/all] Error 2 > CMakeFiles/Makefile2:74: recipe for target 'CMakeFiles/ue_ip.dir/rule' > failed > make[1]: *** [CMakeFiles/ue_ip.dir/rule] Error 2 > Makefile:118: recipe for target 'ue_ip' failed > make: *** [ue_ip] Error 2 > > > root@juju-0f8be6-10:/srv/openairinterface5g/cmake_targets# ls -l > /lib/modules/ > > total 0 > > So, > > Is it possible to have the contents of the /lib/modules of the host > inherited in each LXC? > > Thanks, > > BR, > NS > > > > On Jul 2, 2017 3:47 PM, "N. S." <n5pas...@hotmail.com> wrote: > > Hi Nicholas, > > > Thanks, you are right. > > Yes , i used > > sudo apt-get install --install-recommends linux-generic-hwe-16.04 > > > > However, I have the following problem: > I have not the host machine running 4.8 which is great, but the LXC > underneath it have empty /lib/modules. > > In fact, > > > * ON HOST Machine: * > root@ns-HP:/lib/modules/4.8.0-56-lowlatency# ll > > total 4824 > drwxr-xr-x 5 root root 4096 Jun 29 01:02 ./ > drwxr-xr-x 8 root root 4096 Jun 29 01:01 ../ > lrwxrwxrwx 1 root root 42 Jun 14 19:40 build -> > /usr/src/linux-headers-4.8.0-56-lowlatency/ > drwxr-xr-x 2 root root 4096 Jun 14 19:27 initrd/ > drwxr-xr-x 14 root root 4096 Jun 29 01:01 kernel/ > -rw-r--r-- 1 root root 1133746 Jun 29 01:02 modules.alias > -rw-r--r-- 1 root root 1121947 Jun 29 01:02 modules.alias.bin > -rw-r--r-- 1 root root 7271 Jun 14 19:25 modules.builtin > -rw-r--r-- 1 root root 9059 Jun 29 01:02 modules.builtin.bin > -rw-r--r-- 1 root root 504755 Jun 29 01:02 modules.dep > -rw-r--r-- 1 root root 717645 Jun 29 01:02 * modules.dep.bin* > -rw-r--r-- 1 root root 285 Jun 29 01:02 modules.devname > -rw-r--r-- 1 root root 190950 Jun 14 19:25 modules.order > -rw-r--r-- 1 root root 386 Jun 29 01:02 modules.softdep > -rw-r--r-- 1 root root 543694 Jun 29 01:02 modules.symbols > -rw-r--r-- 1 root root 664280 Jun 29 01:02 modules.symbols.bin > drwxr-xr-x 3 root root 4096 Jun 29 01:01 vdso/ > > > root@ns-HP:/lib/modules/4.8.0-56-lowlatency# du -sh . > > *224M . * > > > EXCERPT from within the LXC container called oai-spgw-0 > I can see the following error about empty /lib/modules. > > *rmmod: ERROR: ../libkmod/libkmod.c:514 lookup_builtin_file() could not > open builtin file '/lib/modules/4.8.0-56-lowlatency/modules.builtin.bin'* > > > > * rmmod: ERROR: Module gtp is not currently loaded modprobe: ERROR: > ../libkmod/libkmod.c:586 kmod_search_moddep() could not open moddep file > '/lib/modules/4.8.0-56-lowlatency/modules.dep.bin' modprobe: FATAL: Module > gtp not found in directory /lib/modules/4.8.0-56-lowlatency 000142 > 00002:497894 7FF1A14AE700 CRITI GTPv2- > air-cn/src/gtpv1-u/gtpv1u_task.c:0105 ERROR in loading gtp kernel module > (check if built in kernel)* > > root@oai-spgw-0:~# uname -a > Linux *oai-spgw-0 4.8.0-56-lowlatency* #61~16.04.1-Ubuntu SMP PREEMPT Wed > Jun 14 13:24:54 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux > > root@*oai-spgw-0:/lib/modules# * ll > total 3 > drwxr-xr-x 2 root root 2 Jun 19 23:52 ./ > drwxr-xr-x 22 root root 26 Jun 29 11:55 ../ > > root@oai-spgw-0:/lib/modules# > > > Is it possible to have the contents of the /lib/modules (224M) from the > host to the sub-jacent LXC? > > Please advise. > > THanks > BR, > NS > > On Jun 29, 2017 3:45 AM, Nicholas Skaggs <nicholas.ska...@canonical.com> > wrote: > > I'm not sure how you installed the hwe kernel, but you should simply > > > sudo apt-get install --install-recommends linux-generic-hwe-16.04 > > > On Thu, Jun 29, 2017 at 3:15 AM, N. S. <n5pas...@hotmail.com> wrote: > > Hi Nicholas and Andrew, > > > Thank you both for your help. > > @Nicholas, > I downloaded the kernel 4.8 and 4.11 Low-latency (Requirement by the > application) and installed it > sudo dpkg -i linux-header-4.8* linux-image-4.8* > sudo update-grub > > But I am faced with a challenge that ZFS is not starting UP during boot. > Cf attached. > > Further digging, the status of the services is as follows: > > > > * $ systemctl status zfs-import-cache.service* > ● zfs-import-cache.service - Import ZFS pools by cache file > Loaded: loaded (/lib/systemd/system/zfs-import-cache.service; static; > vendor preset: enabled) > Active: failed (Result: exit-code) since Wed 2017-06-28 19:54:33 EEST; > 12min ago > Process: 1032 ExecStartPre=/sbin/modprobe zfs (code=exited, > status=1/FAILURE) > > Jun 28 19:54:33 ns-HP systemd[1]: Starting Import ZFS pools by cache > file... > Jun 28 19:54:33 ns-HP modprobe[1032]: modprobe: FATAL: Module zfs not > found in directory /lib/modules/4.8.0-040800-lowlatency > Jun 28 19:54:33 ns-HP systemd[1]: zfs-import-cache.service: Control > process exited, code=exited status=1 > Jun 28 19:54:33 ns-HP systemd[1]: Failed to start Import ZFS pools by > cache file. > Jun 28 19:54:33 ns-HP systemd[1]: zfs-import-cache.service: Unit entered > failed state. > Jun 28 19:54:33 ns-HP systemd[1]: zfs-import-cache.service: Failed with > result 'exit-code'. > > > > > * ns@ns-HP:/usr/src/linux-headers-4.4.0-81$ systemctl status > zfs-mount.service* > ● zfs-mount.service - Mount ZFS filesystems > Loaded: loaded (/lib/systemd/system/zfs-mount.service; static; vendor > preset: enabled) > Active: failed (Result: exit-code) since Wed 2017-06-28 19:54:34 EEST; > 13min ago > Process: 1042 ExecStart=/sbin/zfs mount -a (code=exited, > status=1/FAILURE) > Main PID: 1042 (code=exited, status=1/FAILURE) > > Jun 28 19:54:33 ns-HP systemd[1]: Starting Mount ZFS filesystems... > Jun 28 19:54:34 ns-HP zfs[1042]: The ZFS modules are not loaded. > Jun 28 19:54:34 ns-HP zfs[1042]: Try running '/sbin/modprobe zfs' as root > to load them. > Jun 28 19:54:34 ns-HP systemd[1]: zfs-mount.service: Main process exited, > code=exited, status=1/FAILURE > Jun 28 19:54:34 ns-HP systemd[1]: Failed to start Mount ZFS filesystems. > Jun 28 19:54:34 ns-HP systemd[1]: zfs-mount.service: Unit entered failed > state. > Jun 28 19:54:34 ns-HP systemd[1]: zfs-mount.service: Failed with result > 'exit-code'. > ns@ns-HP:/usr/src/linux-headers-4.4.0-81$ > > I tried to run modprobe zfs as advised, but: > > $ sudo -i > [sudo] password for ns: > root@ns-HP:~*# /sbin/modprobe zfs* > modprobe: FATAL: Module zfs not found in directory > /lib/modules/4.8.0-040800-lowlatency > root@ns-HP:~# > > > > I know this might be not directly related to JUJU, but to ubuntu kernel, > but I appreciate if you could help. > > > Thanks, > > BR, > > > *NS * > > > > *Nicholas Skaggs*nicholas.skaggs at canonical.com > <juju%40lists.ubuntu.com?Subject=Re%3A%20Running%20KVM%20in%20addition%20to%20LXC%20on%20local%20LXD%20CLOUD&In-Reply-To=%3CCAHNOz3oXQF4t2x5Rz6R5P-zfuQ651PPJSJEQRf9Er-ZW_3pE4Q%40mail.gmail.com%3E> > *Tue Jun 27 19:51:08 UTC 2017* > > If it's possible, I would simply run the hwe kernel on xenial which > provides 4.8+. Read more about running an updated stack here: > https://wiki.ubuntu.com/Kernel/LTSEnablementStack > > This would solve your specific problem without worrying about running > kvm's. > > Kernel/LTSEnablementStack - Ubuntu Wiki > <https://wiki.ubuntu.com/Kernel/LTSEnablementStack> > wiki.ubuntu.com > Ubuntu Kernel Release Schedule. The following is a generic view of the > Ubuntu release schedule, the kernels delivered, and the support time frames. > > > > > ------------------------------ > *From:* Andrew Wilkins <andrew.wilk...@canonical.com> > *Sent:* Sunday, June 25, 2017 10:42 PM > *To:* N. S.; juju@lists.ubuntu.com > *Subject:* Re: Running KVM in addition to LXC on local LXD CLOUD > > On Sat, Jun 24, 2017 at 9:14 PM N. S. <n5pas...@hotmail.com> wrote: > > Hi, > > > I am running 10 machines on local LXD cloud, and it's fine. > > My host is Ubuntu 16.04, kernel 4.4.0-81. > > However, I have the following challenge: > One of the machines (M0) stipulates a kernel 4.7+ > > > As it's known, unlike KVM, LXC makes use of same kernel of the host system > and in this case (4.4.0-81) breaching thus the stipulation of M0 (4.7+). > > > I have read that starting Juju 2.0, KVM is no more supported. > > > Juju still supports kvm, but the old "local" provider which supported > lxc/kvm is gone. > > You could run a kvm container from within a lxd machine with the right > apparmor settings. Probably the most straight forward thing to do, though, > would be to create a KVM VM yourself, install Ubuntu on it, and then > manually provision it using "juju add-machine ssh:<hostname>". > > > How could I prepare the stipulation of M0? > > Thanks for your help > BR, > Nazih > > -- > Juju mailing list > Juju@lists.ubuntu.com > Modify settings or unsubscribe at: https://lists.ubuntu.com/mailm > an/listinfo/juju > > > > > > -- > Juju mailing list > Juju@lists.ubuntu.com > Modify settings or unsubscribe at: https://lists.ubuntu.com/ > mailman/listinfo/juju > >
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