Installing A FreeBSD 7.0 DNS Server With BIND
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Author: tobiaszt •Tags: freebsd •Comments: 1Creating A Jail With VNC Server On FreeBSDThis article explains how you can run a VNC server from within a jail on FreeBSD.read more... | view as pdfVNStat On FreeBSD 7 With A PHP GUI
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Author: o.meyer •Tags: freebsd, desktop •Comments: 0Set Up PC-BSD v1.4 betaThis document describes how to set up PC-BSD v1.4 beta. PC-BSD is released under the BSD license.read more... | view as pdfVirtual Hosting With vsftpd And PostgreSQL
Author: norbi771 •Tags: ftp, freebsd •Comments: 1Virtual Hosting With vsftpd And PostgreSQLThis document describes how to install a vsftpd server that uses virtual users from a PostgreSQL database instead of real system users. I couldn't find any tutorial like that on the internet, so when that configuration finally worked for me, I decided to publish it. The documentation is based on FreeBSD 6.2 which I was recently forced to use (I usually use Debian). Nevertheless the document should be suitable for almost any Linux distribution as well (may require very small amendments).read more... | view as pdfHow To Set Up A FreeBSD Wireless Access Point
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Individual jails can be marked for starting at by issuing this command: iocage set boot=on www.bsdcan.org You can specify the order for jails to start by setting their priority: iocage set priority=20 wiki.bsdan.org Lower value means higher boot priority (i.e. Boot sooner). Jails have other properties.
Some administrators divide jails into the following two types: “complete” jails, which resemble a real FreeBSD system, and “service” jails, dedicated to one application or service, possibly running with privileges. This is only a conceptual division and the process of building a jail is not affected by it. When creating a “complete” jail there are two options for the source of the userland: use prebuilt binaries (such as those supplied on an install media) or build from source.
To install the userland from installation media, first create the root directory for the jail. This can be done by setting the
DESTDIR
variable to the proper location.Start a shell and define
DESTDIR
:Mount the install media as covered in mdconfig(8) when using the install ISO:
Alternatively, download the tarballs from a mirror:
Extract the binaries from the tarballs on the install media into the declared destination. Minimally, only the base set needs to be extracted, but a complete install can be performed when preferred.
To install just the base system:
To install everything except the kernel:
![Freebsd ezjail Freebsd ezjail](https://www.bsdstore.ru/img/bmigration2.png)
The jail(8) manual page explains the procedure for building a jail:
![Which of the following is incorrect with respect to freebsd jail? Which of the following is incorrect with respect to freebsd jail?](/uploads/1/2/6/4/126494093/703480012.jpg)
Selecting a location for a jail is the best starting point. This is where the jail will physically reside within the file system of the jail's host. A good choice can be /usr/jail/ , where jailname is the hostname identifying the jail. Usually, /usr/ has enough space for the jail file system, which for “complete” jails is, essentially, a replication of every file present in a default installation of the FreeBSD base system. |
If you have already rebuilt your userland using make world or make buildworld , you can skip this step and install your existing userland into the new jail. |
This command will populate the directory subtree chosen as jail's physical location on the file system with the necessary binaries, libraries, manual pages and so on. |
The distribution target for make installs every needed configuration file. In simple words, it installs every installable file of /usr/src/etc/ to the /etc directory of the jail environment: $D/etc/ . |
Mounting the devfs(8) file system inside a jail is not required. On the other hand, any, or almost any application requires access to at least one device, depending on the purpose of the given application. It is very important to control access to devices from inside a jail, as improper settings could permit an attacker to do nasty things in the jail. Control over devfs(8) is managed through rulesets which are described in the devfs(8) and devfs.conf(5) manual pages. |
Once a jail is installed, it can be started by using the jail(8) utility. The jail(8) utility takes four mandatory arguments which are described in the Section 14.1, “Synopsis”. Other arguments may be specified too, e.g., to run the jailed process with the credentials of a specific user. The
command
argument depends on the type of the jail; for a virtual system, /etc/rc
is a good choice, since it will replicate the startup sequence of a real FreeBSD system. For a service jail, it depends on the service or application that will run within the jail.Jails are often started at boot time and the FreeBSD
rc
mechanism provides an easy way to do this.- Configure jail parameters in
jail.conf
:Configure jails to start at boot time inrc.conf
:The default startup of jails configured in jail.conf(5), will run the/etc/rc
script of the jail, which assumes the jail is a complete virtual system. For service jails, the default startup command of the jail should be changed, by setting theexec.start
option appropriately.Note:
For a full list of available options, please see the jail.conf(5) manual page.
service(8) can be used to start or stop a jail by hand, if an entry for it exists in
jail.conf
:Jails can be shut down with jexec(8). Use jls(8) to identify the jail's
JID
, then use jexec(8) to run the shutdown script in that jail.More information about this can be found in the jail(8) manual page.