Lxd: Unterschied zwischen den Versionen
Aus Vosp.info
F (Diskussion | Beiträge) (→Befehle) |
F (Diskussion | Beiträge) (→Backup LXD Container mit Rsync) |
||
| Zeile 127: | Zeile 127: | ||
lxc snapshot $containername | lxc snapshot $containername | ||
| − | snapshotPath=$(zfs list -t snapshot | grep | + | snapshotPath=$(zfs list -t snapshot | grep anc | tail -n 1 | awk '{print $1}') |
mkdir -p $mountPath | mkdir -p $mountPath | ||
mount -t zfs $snapshotPath $mountPath | mount -t zfs $snapshotPath $mountPath | ||
Version vom 12. September 2024, 20:31 Uhr
Inhaltsverzeichnis
Allgemein
- Orte
- /var/snap/lxd/common/lxd/storage-pools/default/containers
Installation
echo 1 > /proc/sys/net/ipv4/ip_forward
/etc/sysctl.conf:
net.ipv4.ip_forward = 1
/etc/netplan/01-netcfg.yaml
network:
version: 2
renderer: networkd
ethernets:
enp0s31f6:
addresses:
- X.X.X.X/32 # IP vom SERVER
- 0x00:0x0:0x:0000::0/64
routes:
- on-link: true
to: 0.0.0.0/0
via: XX.XXX.XX.XX
gateway6: fe80::1
nameservers:
addresses:
- 213.133.XX.XX
- 213.133.XXX.XXX
- 213.133.XXX.XXX
- 2a01:4f8:X:X::add:XXXX
- 2a01:4f8:X:X::add:XXXX
- 2a01:4f8:X:X::add:XXXX
bridges:
vmbr0:
addresses: [ X.X.X.X/28 ] #IP von der Bridge
parameters:
stp: false
forward-delay: 4
netplan apply
apt install lxd
adduser nc
adduser lxd
adduser nc lxd
lxd init
# /media/data/serverconf/lxd.yaml
config: {}
networks: []
storage_pools:
- config:
source: /dev/md2
description: ""
name: default
driver: zfs
profiles:
- config: {}
description: ""
devices:
eth0:
name: eth0
nictype: bridged
parent: vmbr0
type: nic
root:
path: /
pool: default
type: disk
name: default
cluster: null
Befehle
lxc list
lxc profile list
lxc network list
lxc storage list
lxc image list images:
lxc image list images: |egrep focal| egrep amd64
lxc image list
Festplatten/Container Größe anzeigen
lxc storage list
lxc storage volume list default
lxc storage info default
zfs list
lxc info $containername
zfs list -t snapshot
Backup LXD Container mit Rsync
containername='ancxyz'
mountPath='/mnt/snapshot'
backupPath='/media/ancdata'
lxc snapshot $containername
snapshotPath=$(zfs list -t snapshot | grep anc | tail -n 1 | awk '{print $1}')
mkdir -p $mountPath
mount -t zfs $snapshotPath $mountPath
mkdir -p $backupPath/$containername
rsync -avz --delete --numeric-ids /mnt/snapshot/* $backupPath/$containername
umount $mountPath
in den lxd container dateien oder verzeichnisse kopieren (anders geht nicht!!! Permission denied)
lxc file push -r dir containername/var/www/
lxc file push file.txt containername/var/www/
- container spezifisches
* login
lxc exec containername -- su --login root
* mount
zfs mount default/containers/containername
Begrenzungen
lxc config set ancontainer limits.cpu 0,3
lxc config set ancontainer limits.memory 1GB
# Überprüfen
cat /proc/cpuinfo | grep processor
free -h
Container
Container Installation
lxc launch ubuntu:20.04 ubuntu2020
lxc list
lxc exec ubuntu2020 -- su --login root
Container Netzwerk
- /etc/netplan/50-cloud-init.yaml mit nach folgendem ersetzen
network:
version: 2
ethernets:
eth0:
addresses:
- 192.168.0.247/32
routes:
- to: 0.0.0.0/0
via: 192.168.0.1
on-link: true
dhcp4: no
dhcp-identifier: mac
nameservers:
addresses: [8.8.8.8]
exit
lxc stop ubuntu2020
lxc list
lxc start ubuntu2020
Migration lxc Container zu lxd Container
Migrations Skript
- mit lsb_release -a kann mensch im original container noch mal schauen, was für ein betriebsystem überhaupt installiert ist
#!/bin/bash
if [ "$1" == "" ]; then
echo Beispiel: $0 containername betriebsystem
exit 1
fi
if ! [ -d "/var/lib/lxc/$1" ] ; then
echo /var/lib/lxc/$1 existiert nicht!
exit
fi
if [ "$2" == "" ]; then
echo Beispiel: $0 containername betriebsystem
echo lxc image list images:
echo es wird ubuntu:20.04 genomme
besys='ubuntu:20.04'
else
besys=$2
fi
echo $0 $1 $besys
CONTAINER_NAME=$1
STORAGE_POOL=default
STORAGEPATH=/var/snap/lxd/common/lxd/storage-pools/${STORAGE_POOL}/containers/
lxc-stop -n ${CONTAINER_NAME}
lxc init $besys ${CONTAINER_NAME} -c security.privileged=true -c boot.autostart=true
#lxc stop ${CONTAINER_NAME}
#lxc config set ${CONTAINER_NAME} boot.autostart true
###
# zfs list
## Benutze NAME z.B default/containers/ncsync
zfs mount default/containers/${CONTAINER_NAME}
#verschiebt den orginalen rootfs
mv ${STORAGEPATH}${CONTAINER_NAME}/rootfs{,.org}
rsync -ah --stats --progress --numeric-ids /var/lib/lxc/${CONTAINER_NAME}/rootfs ${STORAGEPATH}${CONTAINER_NAME}/
mv ${STORAGEPATH}${CONTAINER_NAME}/rootfs/dev{,.org}
rsync -ah --stats --progress ${STORAGEPATH}${CONTAINER_NAME}/rootfs.org/dev ${STORAGEPATH}${CONTAINER_NAME}/rootfs/
rm -r ${STORAGEPATH}${CONTAINER_NAME}/rootfs.org
umount ${STORAGEPATH}${CONTAINER_NAME}
#sed -i 's|lxc.start.auto = .*|lxc.start.auto = 0|g' /var/lib/lxc/${CONTAINER_NAME}/config
lxc config set ${CONTAINER_NAME} volatile.eth0.hwaddr $(grep lxc.net.0.hwaddr /var/lib/lxc/${CONTAINER_NAME}/config | cut -d"=" -f2)
lxc config show ${CONTAINER_NAME}
#lxc-ls -n ${CONTAINER_NAME} -f
lxc start ${CONTAINER_NAME}
lxc stop ${CONTAINER_NAME}
lxc config set ${CONTAINER_NAME} security.privileged false
lxc start ${CONTAINER_NAME}
lxc stop ${CONTAINER_NAME}
lxc config set ${CONTAINER_NAME} security.privileged true
lxc start ${CONTAINER_NAME}
lxc stop ${CONTAINER_NAME}
lxc config set ${CONTAINER_NAME} security.privileged false
lxc start ${CONTAINER_NAME}
lxc list
Weitergehende Möglichkeiten
lxd sql global "Select * FROM storage_pools"
lxd sql global "Select * FROM profiles_devices_config"
# Zum Beispiel könnten Storages so umbenannt werden (evtl keine gute Idee!!!! )
lxd sql global "UPDATE storage_pools SET name='newname' WHERE name='oldname';"
lxd sql global "UPDATE profiles_devices_config SET value='newname' WHERE value='oldname' AND key='pool';"
# Datenbank Tabellen und Inhalte
lxd sql <local|global> [.dump|.schema]
lxd sql global ".dump" >lxcinfo.txt
lxd sql global ".schema" >lxcschema.txt
https://lxd.readthedocs.io/en/latest/database/
Probleme
- irgendwie mit symlinks
Quellen
- verwendete links
