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Difference between revisions of "Installation on Debian 8"

(→‎Install packages: Patch VarLock directory creation)
(→‎Download OS templates: ctcreate to ctctl)
 
(4 intermediate revisions by the same user not shown)
Line 14: Line 14:
 
  # Must boot with SystemV to release Systemd
 
  # Must boot with SystemV to release Systemd
 
  sudo reboot
 
  sudo reboot
−
  sudo apt-get remove systemd
+
  sudo apt-get --autoremove remove systemd
−
sudo apt-get autoremove
 
 
  echo -e 'Package: *systemd*\nPin: release *\nPin-Priority: -1\n' | sudo tee /etc/apt/preferences.d/avoid-systemd
 
  echo -e 'Package: *systemd*\nPin: release *\nPin-Priority: -1\n' | sudo tee /etc/apt/preferences.d/avoid-systemd
  
Line 44: Line 43:
 
  VE_STOP_MODE=stop
 
  VE_STOP_MODE=stop
  
−
== Patch VarLock directory creation ==
+
* Only Devuan: link to be recognised as Debian
−
This is necessary to vzeventd works on boot, because it doesn't automatically create VARLOCK directory on startup:
+
  if [ -f /etc/devuan_version ] ; then sudo ln -s /etc/devuan_version /etc/debian_version ; fi
−
Lines="$(cat /etc/init.d/vzeventd | grep -e '#.*INIT INFO' -ie '# .*Provides:' -ie '^# .*-St')"
 
−
  Lines="$(echo "$Lines" | sed -e 's|vzeventd$|vzevent_pre|g' | sed -e 's| vz$| vzeventd|g')"
 
−
echo "$Lines" | sudo tee /etc/init.d/vzevent_pre
 
−
echo 'mkdir -p /var/lock/subsys' | sudo tee -a /etc/init.d/vzevent_pre
 
−
sudo chmod +x /etc/init.d/vzevent_pre
 
−
sudo insserv --default vzevent_pre
 
  
 
= '''Reboot into OpenVZ kernel''' =
 
= '''Reboot into OpenVZ kernel''' =
Line 67: Line 60:
  
 
  Packages="$(aptitude search ~i~nlinux-image- --display-format '%p' | grep -ve 'openvz')"
 
  Packages="$(aptitude search ~i~nlinux-image- --display-format '%p' | grep -ve 'openvz')"
−
  sudo apt-get remove $Packages
+
  sudo apt-get --autoremove remove $Packages
−
sudo apt-get autoremove
 
  
 
(requires aptitude)
 
(requires aptitude)
Line 86: Line 78:
 
  sudo vztmpl-dl --gpg-check debian-8.0-x86_64-minimal
 
  sudo vztmpl-dl --gpg-check debian-8.0-x86_64-minimal
  
−
Alternatively, you can also download precreated template caches from [[Download/template/precreated|Download » Template » Precreated]], or from one of the [https://mirrors.openvz.org/ mirrors]. Put those tarballs '''as-is (no unpacking needed)''' to the <tt>/vz/template/cache/</tt> directory.
+
Alternatives:
 +
* Download precreated template caches from [[Download/template/precreated|Download » Template » Precreated]] or from one of the [https://mirrors.openvz.org/ mirrors]. Put those tarballs '''as-is (no unpacking needed)''' to the <tt>/vz/template/cache/</tt> directory.
 +
* '''[https://downloads.actiu.net/ctctl/ ctctl]''' helper to create Debian (or derivative) container without template (caches it as a local template). This tool manages unprivileged LXC containers too.
  
 
= Next steps =
 
= Next steps =

Latest revision as of 09:25, 28 January 2020

This is a guide to install OpenVZ 6 (legacy) on your Devuan 1 "Jessie" or Debian 8 "Jessie" machine (both amd64 or i386).

Current commercial version of OpenVZ (Virtuozzo 7) is not installable on Devuan or Debian because is developed as an independent GNU/Linux distribution

Contents

Volumes and file systemsEdit

  • It is recommended to use a separate partition for containers (by default /var/lib/vz) and format it to ext4.
  • btrfs mounted filesystems cannot be formatted with modern features as: mixed-bg, extref, skinny-metadata, no-holes (More details).

Change Systemd to SystemVEdit

Only needed for Debian (Devuan already works with SystemV by default). Warning: This operation can make some desktop software to stop working. 

sudo apt-get install sysvinit-core sysvinit-utils
# Must boot with SystemV to release Systemd
sudo reboot
sudo apt-get --autoremove remove systemd
echo -e 'Package: *systemd*\nPin: release *\nPin-Priority: -1\n' | sudo tee /etc/apt/preferences.d/avoid-systemd

Register OVZ updated repositoryEdit

RepoFile=/etc/apt/sources.list.d/openvz.list
RepoUrl=http://download.openvz.org/debian
echo "deb $RepoUrl jessie main" | sudo tee "$RepoFile"
echo "#deb $RepoUrl jessie-test main" | sudo tee -a "$RepoFile"
echo "deb $RepoUrl wheezy main" | sudo tee -a "$RepoFile"
wget -qO - http://ftp.openvz.org/debian/archive.key | sudo apt-key add -
sudo apt-get update
  Note: The second line with jessie-test is commented out. This is a testing repo with newer kernels and possibly tools. Enable it if you want to stay on a bleeding edge of technology.

For more info about Debian repositories, see http://download.openvz.org/debian

Install packagesEdit

KPackage="linux-image-openvz-$(dpkg --print-architecture)"
sudo apt-get --install-recommends install $KPackage vzdump ploop initramfs-tools
if [ ! -d /vz ] ; then sudo ln -s /var/lib/vz/ /vz ; fi
  • Create file /etc/vz/vznet.conf with the following line:
EXTERNAL_SCRIPT="/usr/sbin/vznetaddbr"
  • Optionally you can set containers completely stop when service stops at /etc/vz/vz.conf
VE_STOP_MODE=stop
  • Only Devuan: link to be recognised as Debian
if [ -f /etc/devuan_version ] ; then sudo ln -s /etc/devuan_version /etc/debian_version ; fi

Reboot into OpenVZ kernelEdit

  Note: At boot manager, in "Advanced options for Devuan GNU+Linux", you will find kernels named "2.6.32-openvz". Select the first listed. 
sudo reboot

Check the OpenVZ processes are running: 

sudo ps ax | grep -v 'grep' | grep 'vzmond'

Set OpenVZ as default to bootEdit

Because of GRUB2 default criteria, default kernel to boot can still be the one from Devuan's repository (non OVZ). Probably you don't want this behaviour; once you've booted fine into OpenVZ kernel, you can remove other unuseful kernels: 

Packages="$(aptitude search ~i~nlinux-image- --display-format '%p' | grep -ve 'openvz')"
sudo apt-get --autoremove remove $Packages

(requires aptitude)

Download OS templatesEdit

This step is optional, vzctl is able to download templates on demand.

An OS template is a GNU distribution for Linux, installed into a container and then packed into a gzipped tarball. Using such a cache, a new container can be created in a minute. 

OpenvzKey="$(echo $(sudo gpg --batch --search-keys security@openvz.org 2>&1 | grep -ie ' key.*created' | sed -e 's|key|@|g' | cut -f 2 -d '@') | cut -f 1 -d ' ' | cut -f 1 -d ',')"
sudo gpg --recv-keys $OpenvzKey
sudo vztmpl-dl --gpg-check --list-remote
# Example:
sudo vztmpl-dl --gpg-check debian-8.0-x86_64-minimal

Alternatives:

  • Download precreated template caches from Download » Template » Precreated or from one of the mirrors. Put those tarballs as-is (no unpacking needed) to the /vz/template/cache/ directory.
  • ctctl helper to create Debian (or derivative) container without template (caches it as a local template). This tool manages unprivileged LXC containers too.

Next stepsEdit

OpenVZ is now set up on your machine. Follow on to basic operations in OpenVZ environment document.

See alsoEdit

Retrieved from "https://wiki.openvz.org/index.php?title=Installation_on_Debian_8&oldid=23242"