LXC
create
- mit lvm
lxc-create -n<container-name> -t <template> -B lvm --lvname <container-name> --vgname <volumen-gruppen-name> --fstype <filesystem-type> --fssize <filesystem-größe>
- ohne lvm
lxc-create -n<container-name> -t <template>
start
- start
lxc-start -n<container-name> -f</path/to/config/file> -d
stop
- stop
lxc-stop -n<container-name>
config
## network lxc.network.type = veth lxc.network.link = br0 lxc.network.name = eth0 lxc.network.hwaddr = 00:00:c3:d2:00:23 lxc.network.veth.pair = br0_<container-name> lxc.network.flags = up lxc.network.type = veth lxc.network.link = br1 lxc.network.name = eth1 lxc.network.hwaddr = 00:00:c3:d2:01:23 lxc.network.veth.pair = br1_<container-name> lxc.network.flags = up ## Container lxc.utsname = <container-name> lxc.rootfs = /var/lib/lxc/<container-name>/rootfs lxc.arch = x86_64 #lxc.console = /var/log/lxc/<container-name>.console lxc.tty = 2 lxc.pts = 1024 ## Capabilities lxc.cap.drop = audit_control lxc.cap.drop = audit_write lxc.cap.drop = linux_immutable lxc.cap.drop = mac_admin lxc.cap.drop = mac_override lxc.cap.drop = setpcap lxc.cap.drop = sys_admin lxc.cap.drop = sys_boot lxc.cap.drop = sys_module lxc.cap.drop = sys_pacct lxc.cap.drop = sys_rawio lxc.cap.drop = sys_time ## Devices # Allow all devices #lxc.cgroup.devices.allow = a # Deny all devices lxc.cgroup.devices.deny = a # Allow to mknod all devices (but not using them) lxc.cgroup.devices.allow = c *:* m lxc.cgroup.devices.allow = b *:* m # /dev/console lxc.cgroup.devices.allow = c 5:1 rwm # /dev/null lxc.cgroup.devices.allow = c 1:3 rwm # /dev/ptmx lxc.cgroup.devices.allow = c 5:2 rwm # /dev/pts/* lxc.cgroup.devices.allow = c 136:* rwm # /dev/random lxc.cgroup.devices.allow = c 1:8 rwm # /dev/rtc lxc.cgroup.devices.allow = c 254:0 rwm # /dev/tty lxc.cgroup.devices.allow = c 5:0 rwm # tty0 lxc.cgroup.devices.allow = c 4:0 rwm # tty1 lxc.cgroup.devices.allow = c 4:1 rwm # /dev/urandom lxc.cgroup.devices.allow = c 1:9 rwm # /dev/zero lxc.cgroup.devices.allow = c 1:5 rwm # tun lxc.cgroup.devices.allow = c 10:200 rwm ## Limits lxc.cgroup.cpu.shares = 1024 lxc.cgroup.cpuset.cpus = 0 lxc.cgroup.memory.limit_in_bytes = 256M lxc.cgroup.memory.memsw.limit_in_bytes = 1G ## Filesystem lxc.mount.entry = proc proc proc ro,nodev,noexec,nosuid 0 0 lxc.mount.entry = sysfs sys sysfs ro 0 0
console
</path/to/conatiner/rootfs>/etc/inittab
# /sbin/getty invocations for the runlevels. # # The "id" field MUST be the same as the last # characters of the device (after "tty"). # # Format: # <id>:<runlevels>:<action>:<process> # # Note that on most Debian systems tty7 is used by the X Window System, # so if you want to add more getty's go ahead but skip tty7 if you run X. # c1:2345:respawn:/sbin/getty 38400 tty1 #1:2345:respawn:/sbin/getty 38400 tty1 #2:23:respawn:/sbin/getty 38400 tty2 #3:23:respawn:/sbin/getty 38400 tty3 #4:23:respawn:/sbin/getty 38400 tty4 #5:23:respawn:/sbin/getty 38400 tty5 #6:23:respawn:/sbin/getty 38400 tty6 # console 1:12345:respawn:/sbin/agetty --noclear 115200 console linux
lxc-console
- VMs auflisten:
lxc-list
- an VM attachen:
lxc-console -n<container-name>
- Von Konsole detachen:
- im screen:
- Ctrl+aaq
- ohne screen:
- Ctrl+aq
- im screen:
debian 8 (jessie/systemd lxc)
z.b wheezy container upgrade auf jessie
lxc - config
lxc.autodev = 1
lxc.kmsg = 0
im rootfs container:
apt-get install dbus (sofern vergessen)
# udev fuu deaktivieren:
ln -s /dev/null /etc/systemd/system/systemd-udevd.service
ln -s /dev/null /etc/systemd/system/systemd-udevd-control.socket
ln -s /dev/null /etc/systemd/system/systemd-udevd-kernel.socket
ln -s /dev/null /etc/systemd/system/proc-sys-fs-binfmt_misc.automount
# tty fuu deaktivieren: /var/lib/lxc/{container}/rootfs/lib/systemd/system/getty@.service
ConditionPathExists=/dev/tty0
# permission fuu
ln -s -f /bin/true /usr/bin/chfn
https://wiki.archlinux.org/index.php/Lxc-systemd
https://github.com/lxc/lxc/commit/a9bf60bab547013a9873a3fb9efe61155e8694b8
https://wiki.debian.org/LXC#Debian_8_.22Jessie.22.2Ftesting
frickeln
https://gist.github.com/peo3/1142202
LXC on ZFS (flatbert)
- Container erstellen
debian lxc bootstrap
lxc-create -n example -t debian
neues dataset
zfs create -o checksum=sha256 -o compression=lz4 -o mountpoint=/rpool/disk33 rpool/disk33
lxc Container verschieben
rsync -aAX --progress /var/lib/lxc/example/rootfs/ /rpool/disk33/
rm -rfv /var/lib/lxc/example/rootfs
lxc Container Config kopieren
cp /var/lib/lxc/pentabot/config /var/lib/lxc/example/config
lxc Container Config anpassen
vi /var/lib/lxc/example/config
### ### namen, pfade, mac adresse, cap, rootfs pfad ### # ### LXC - jessie/systemd hacks // ### lxc.autodev = 1 lxc.kmsg = 0 lxc.cap.drop=mac_admin mac_override setfcap setpcap sys_boot sys_module sys_pacct sys_rawio sys_resource sys_time sys_tty_config # lxc.pts = 1024 ### // LXC - jessie/systemd hacks ### #
lxc autostart (reboot safe)
cd /etc/lxc/auto
ln -s ../../../var/lib/lxc/example/config 310_example.conf
lxc link zum rpool dataset
cd /lxc-container
ln -s /rpool/disk33 example
lxc / debian jessie upgrade sources.list
cp /lxc-container/pentabot/etc/apt/sources.list /lxc-container/example/etc/apt/sources.list
lxc starten
lxc-start -n example
lxc wheezy auf jessie upgraden (ohne systemd)
apt-get update; apt-get upgrade
LXC Debian 7 (Wheezy) Container Upgrade auf Debian 8 (Jessie) mit sysvinit
Container läuft mit Wheezy
grep "PRETTY" /var/lib/lxc/*/*/etc/os-release
/var/lib/lxc/bind/root/etc/os-release:PRETTY_NAME="Debian GNU/Linux 7 (wheezy)"
lxc capabilities anpassen und container restarten
vi /var/lib/lxc/bind/config
## Capabilities
### LXC - jessie/systemd hacks // ###
lxc.kmsg = 0
#lxc.cap.drop = audit_control
#lxc.cap.drop = audit_write
### LXC - jessie/systemd hacks // ###
lxc-stop -n bind
nachschauen ob noch alte interfaces active sind
ifconfig | grep "bind"
und ggf. abwarten bis die alten interface ressourcen "freigegeben" sind (nicht mehr auftauchen)
Container neustarten:
lxc-start -n bind
Repo anpassen
rm /etc/apt/sources.list.d/debian.list
vi /etc/apt/sources.list
### ### ### C3D2 ### ### ###
deb http://ftp.de.debian.org/debian/ jessie main contrib non-free
deb-src http://ftp.de.debian.org/debian/ jessie main contrib non-free
deb http://ftp.de.debian.org/debian/ jessie-updates main contrib non-free
deb-src http://ftp.de.debian.org/debian/ jessie-updates main contrib non-free
deb http://ftp.de.debian.org/debian-security/ jessie/updates main contrib non-free
deb-src http://ftp.de.debian.org/debian-security/ jessie/updates main contrib non-free
### ### ### C3D2 ### ### ###
# EOF
Container Upgrade
apt-get update; apt-get clean; apt-get update; apt-get upgrade
Container Dist-Upgrade
apt-get dist-upgrade
Container von systemd auf sysvinit-core umstellen
apt-get install sysvinit-core
apt-get autoremove
apt-get install --reinstall sysvinit-core
Container neustarten:
@HOST!
lxc-stop -n bind
lxc-start -n bind
Bei Fehler:
/etc/init.d/udev-finish: 21: exec: /lib/udev/udev-finish: not found
dann ein:
apt-get remove --purge udev