Jails

Ansible playbook for FreeBSD jail.conf.d

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While I was moving jails from one host to another, I decided to start using /etc/jail.conf.d/. The idea is each jail gets its own configuration file in that directory, instead of using /etc/jail.conf. In this post: FreeBSD 13.1 But first, you should know Let’s get some things out in the open before you jump into the change. The main advantage of /etc/jail.conf.d/ is each jail gets its own configuration file. Easy to find. […]

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error: cannot open ‘.git/FETCH_HEAD’: No space left on device

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After moving the poudriere jail (pkg01) to the new host (r730-01), I noticed this message from Nagios: That “email found in . /var/mail/dan” message is significant. In general mail on my hosts/jails is not delivered locally. It all goes off-host. That’s why I have this Nagios check. When mail like that is found, it’s either a configuration error or something local has gone wrong. In this post: FreeBSD 13.1 poudriere-3.3.7_1 NOTE: This is

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Moving one jail from host to host

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This is a quick post about the steps I’m using to move my jails from one host to another. This is bing done as I merge two hosts into one. I have not attempted to automate this, apart from the initial syncoid copying of data. This post is base roughly upon my Mastodon post from yesterday. In this post: FreeBSD 13.1 sanoid-2.1.0 copying from slocum copying to r730-01 use of /etc/jail.conf.d/ Right, now,

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Moving the poudriere jail from slocum to r730-01

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NOTE: If you’re looking for a jail configuration for poudriere, please refer to Configuration for running poudriere in a jail on FreeBSD 14. I recently moved the pkg01 jail from one host to another. I’m having trouble getting it to build packages. [pkg01 dan ~] % sudo poudriere testport -j 131amd64 -p dvl -z primary -i devel/py-pip [00:00:00] Error: Please load the linux module on the host using “kldload linux” On the host:

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Getting Home Assistant running in a FreeBSD 13.1 jail

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Home Assistant is not friendly for plain installs. It seems designed for containers or running everything out of pip install. That, in itself, is a disturbing trend I’ve seen on several projects (what? you’re not running a git cloned image?). I’ve seen reports of people running containers etc. However, I want to run this on FreeBSD. I don’t want to muck about with installing containers etc. If containers are the only way for

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Monitoring FreeBSD jails from the host

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It was May 2021 when I tweeted about monitoring FreeBSD jails which had jail IP addresses only in the 127.0.0.0/8 range. Yesterday, nearly 6 months later, I did the first test of this. This came up because I’m getting a new FreshPorts node ready. I’ve created a file in the jail to be run from the host. That script runs in the jail but it initiated by a process on the host. In

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cron is running all jobs twice – solved

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This started earlier today and I solved it only just now. It took me a while to find out it was duplicate cron jobs, and even longer to find out why. Edit: 2025-09-20 – if this is a jail, check your exec.start directives for duplicate entries. This problem arose today. Mine was two “/bin/sh /etc/rc” declarations. See https://bsd.network/web/@dvl/115237669230498431 It started with lockf notifications (if you’ve never heard of lockf before, please read this

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Upgrading a FreeBSD 12.2 jail to FreeBSD 13 using mkjail

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Mark Felder and I have been working on a minimalist set of jail scripts for creating and updating jails. All jail management is accomplished via standard vanilla FreeBSD jails. No jail managers are involved. Everything goes through jail.conf. In this post: FreeBSD 13.0 host, recently update from FreeBSD 12.2 FreeBSD 12.s jail on that host, about to be updated to FreeBSD 13 These jails were NOT created with mkjail Jails are mounted at

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snapshot ; ls ; destroy; dataset is busy – WTF?

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I have found this bizarre situation where a FreeBSD 12.2 snapshot cannot be destroyed. This is the simple example, which works: [dan@pkg01:~] $ sudo zfs snapshot tank_fast/poudriere@snapshot-for-backup [dan@pkg01:~] $ sudo zfs destroy tank_fast/poudriere@snapshot-for-backup [dan@pkg01:~] $ This is the simple example, which fails: [dan@pkg01:~] $ sudo zfs snapshot tank_fast/poudriere@snapshot-for-backup [dan@pkg01:~] $ ls /usr/local/poudriere/.zfs/snapshot/snapshot-for-backup cache data jails ports [dan@pkg01:~] $ sudo zfs destroy tank_fast/poudriere@snapshot-for-backup cannot destroy snapshot tank_fast/poudriere@snapshot-for-backup: dataset is busy [dan@pkg01:~] $ EDIT: we

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Converting an iocage vnet jail to a vnet jail

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In this post I will be creating a ‘new’ jail which uses vnet. I say ‘new’ because I am actually Converting an iocage jail to a vanilla jail which happens to use vnet. NOTE: I originally failed to get this to work. You can read about it. I’m going to repost this article soon with a working solution. I won’t describe the process of creating the jail. Sorry. For the record: FreeBSD 12.2

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