FreeBSD virtual environment management and repository

Attention! Current pages describe CBSD version 12.1.x. If you are using an older version, please update first.

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Building and upgrading bases

Commands:

			% cbsd srcup
			% cbsd buildworld
			% cbsd installworld
			% cbsd world
			% cbsd bases
			% cbsd removebase
		

General information

remark: "base" refers to a directories containing a full copy/hierarchy of FreeBSD OS files.

The directory for the base directory is located in the ~cbsd/basejail/ directory and has the form base_'arch '_' target_arch '_' ver ', for example: /usr/jails/basejail/base_amd64_amd64_11.1

You can view the bases registered in CBSD and their versions via command:

		% cbsd bases
		

For the creation of new jails (or starting jails which require a RO mounted base), a copy of base is necessary.

If you created a container and the base files are missing, when you start CBSD automatically offers several options for obtaining the base of your choice, this is:

  • Download the base archive over the network. Depending on the fbsdrepo=0,1 setting in initenv-tui, ONLY official FreeBSD repo will be used, or first the CBSD project repository will be used and if there is no archive on it - the official FreeBSD repository after.

  • If you create a container of the same architecture and version as your hoster system, CBSD can get base without downloading on the network and without compilation, by constructing a copy of the base from your files
  • Get the base by unpacking the .txz archive. In this case, you specify the path where the archive is located
  • Compile the database yourself, running the command sequence: cbsd srcup and cbsd world. This is a very long process.

Thus, you control where and how files will be received, depending on your level of trust and security requirements



Described below are the steps needed to get the initial FreeBSD sources from the project's SVN repository (http://svn.freebsd.org), its compilation and installation in a separate directory which will act as base. These actions are necessary, if you don't want to use pre compiled versions available on ftp://ftp.freebsd.org or http://bsdstore.ru, which can be retrieved with the cbsd repo command. Also, by manually building becomes possible to not only get releases, but also individual branches.

Sources and configuration of receiving base

Starting with the CBSD 12.0.4, You can adjust the default base acquisition method and customize sources. The configuration file is responsible for this behavior: ~cbsd/etc/defaults/FreeBSD-bases.conf (or ~cbsd/etc/default/HardenedBSD-bases.conf)

To make changes, copy this file to the directory ~cbsd/etc/

The configuration file supports $var and $arch variables; thus, you can more flexibly customize sources, for example:

auto_baseupdate=0
default_obtain_base_method="extract repo"
default_obtain_base_extract_source="/nfs/bases/${platform}/base-${arch}-${ver}.txz"
default_obtain_base_repo_sources="https://my.repo.local/bases/${platform}/${ver}/base-${arch}.txz https://mirror-service.local/base-${platform}-${ver}-${arch}.txz"
	

Set CBSD to choose the default method for retrieving the database from the local file system (extract). At the same time, the way in which it will perform the search and provided that CBSD is running on the FreeBSD platform and you are creating a container with the version of the base 12.1 and the architecture amd64, should look like this: /nfs/bases/FreeBSD/base-amd64-12.1.txz

In the absence of this file, CBSD will attempt to get the archive from: https://my.repo.local/bases/FreeBSD/12.1/base-amd64.txz and https://mirror-service.local/base-FreeBSD-12.1-amd64.txz

This feature, together with the inter=0 key (non-interactive execution of CBSD commands) allows you to automate the process of deploy of containers using its own infrastructure

The auto_baseupdate params adjusts the automatic update of the received base to the latest patch level ( FreeBSD 12.0-p1, FreeBSD 12.0-p2 ..) via freebsd-update (or hbsd-update for HardenedBSD platform) tools.

Please use auto_baseupdate=1, if you want to automatically accept patches when getting a base

As an example of use case, you can look at the integration of CBSD with the Cirrus CI service in Issue #367

Base obtaining

building or updating consists of the following three steps:

  • Receiving or updating of the initial FreeBSD source code through cbsd srcup: Receiving or updating of an source code for that FreeBSD version at which in the moment works the current node:
    					% cbsd srcup
    				
    Receiving or updating of an source code for the concrete FreeBSD version, for example, for 11.1:
    					% cbsd srcup ver=11.1
    				
    Receiving or updating of source code for STABLE (for example, for RELENG_11):
    					% cbsd srcup ver=11 stable=1
    				
    These commands, at existence of source code in SVN, will fill catalogs $workdir/src/src_$ver
  • Compilation of source code via cbsd buildworld: The result received from a step 1, can be used for base compilation. World compilation, at existence $workdir/src/src_$ver dir for current node version:
    					% cbsd buildworld
    				
    Thus, objective files, at existence from the last build, won't be cleaned (make clean). If in the repeated builds there was a unsuccess, it is meaningful to force to clean old system .o-files with clean params:
    					% cbsd buildworld clean=1
    				
    By default, multiline assembly, where number of jobs equally to number of cores (sysctl -n hw.ncpu). The num ofr parallel jobs is regulated through the maxjobs parameter, for example, for build in one job:
    					% cbsd buildworld maxjobs=1
    				
    At compilation, the personal src.conf(5) can be used , in which it is possible to specify standard KNOBS-y. The src.conf file should placed in the catalog $workdir/etc/ and have name src-basename.conf, where basename — any name of configuration. For example, in default CBSD installation there are file /usr/jails/etc/src-lite.conf. For base build with certain src.conf, it is necessary to specify basename parameter:
    					% cbsd buildworld basename=lite
    				
    The next operation over building result (installworld), also should contain basename= parameter, as the result of building will be placed in $workdir/basejail/base_$basename_$arch_$ver directory, where $basename — is name of configuartion. Other params of buildworld:
    • ver — to specify the concrete version of source code
    • arch — build for concrete architecture
    • stable — build for RELENG_X branch
  • Base installation via cbsd installworld: The result received from a step 2, it is possible to use for installation of the new base in ${workdir}/basejail/base_* directory, from where it will be already mounted in the RO mode, or to be formed a new jails. For install of files for the current version of system:
    					% cbsd installworld
    				
    Installation of files for version 11.1 builded with src.conf named as lite:
    					% cbsd installworld basename=lite ver=11.1
    				
    other params for installworld:
    • arch — install for concrete architecture
    • stable — install for RELENG_X branch

cbsd world command is sequence for cbsd buildworld && cbsd installworld

When you have the base in ${workdir}/basejail,you can go to the jail creation.

Deleting the base

The base can be removed via cbsd removebase command. By default, the version and architecture of your hoster is inherited. If the versions and/or architecture do not match, use the previously described arguments ver, arch, target_arch and stable. For example:

	% cbsd removebase
	% cbsd removebase ver=11 stable=1
	% cbsd removebase ver=11.1 stable=0 arch=i386 target_arch=i386