A friend introduced me to monitor lights earlier this year. I thought about getting one, but didn’t. I added it to my wish-list and I recently received one. I really like it. As an Amazon Associate I earn from qualifying purchases. This is what I bought: OOWOLF Monitor Light Bar with Remote Screen Light Bar (Amazon link). I took these photos one evening in my office. See the URL above for details.
Blatant self interest – monitor light Read More »
On FreeBSD, you can jail a ZFS dataset – that is, the jail can manipulate the ZFS dataset as if it was a host (more or less). This has useful applications. In my case, I want to backup a snapshot of that dataset from the host. For example, I want to backup this dataset: [12:19 r730-01 dvl ~] % zfs list data02/freshports/jailed/dev-ingress01/data/latest_commits NAME USED AVAIL REFER MOUNTPOINT data02/freshports/jailed/dev-ingress01/data/latest_commits 572K 798G 120K /var/db/ingress/latest_commits Within
FreeBSD jailed ZFS datasets – how do I find the .zfs/snapshot directory? Read More »
Tonight, while watching an episode of The Great British Bake Off, I configured a new Bacula backup jobs to cover some datasets which were not already backed up. I already have a backup jobs to backup all the jails, but only for datasets which sit right under zroot/jails (for example). This new solution takes a list of datasets, snapshots them, backs them up, then destroys those snapshots. Why backup a snapshot? Consistency. During
Backing up FreeBSD with Bacula via ZFS snapshot Read More »
Librenms is my tool-of-choice for grabbing metrics from switches, servers, wireless access points, and anything else with an snmp interface. In this post: FreeBSD 14.0 LibrenMS 23.11.0,1 – updated to 23.11.0_1,1 within this post net-snmp-5.9.1_4,1 After updating some hosts to FreeBSD 14, the zfs application/extension broke. It was quickly amended after a report was lodged. However, after the fix, I still wasn’t getting graphs. It was nan all across the board for ZFS:
Debugging snmp output when using LibreNMS Read More »
If you’ve been watching your logs, you’ve probably noticed messages like this: In this post: FreeBSD 14.0 ntpd .2.8p16-a (included with the base OS) There are several FreeBSD PR lodged, the most relevant (to me) is ntpd: leap-seconds.list should not run inside jails, and IETF is no longer hosting it. The fix I am using: Tell ntpd to use this source for leap-seconds. [14:02 r730-01 dvl ~] % sudo sysrc ntp_leapfile_sources=https://hpiers.obspm.fr/iers/bul/bulc/ntp/leap-seconds.list ntp_leapfile_sources: https://cgit.freebsd.org/src/plain/contrib/tzdata/leap-seconds.list
Without resorting to configuration tools, such as Ansible, I wonder if there is an easy way to avoid repeating a list of datasets within a jail configuration. First, some facts: FreeBSD 14.0 I use plain vanilla jails I know this can be easily scripted with a configuration tool; that is out of scope for this post I want to explicitly list the datasets; taking all the children of a given dataset is out
Avoiding repetition within jail configurations Read More »
Stuff goes wrong. I like to check. Trust. But. Verify. Skip to the end for the list of useful commands. Here’s some of that verification, as briefly mentioned in FreeBSD 14 upgrade – files not removed by delete-old and Excluding some jails from upgrade. After upgrading all the jails on r730-01, I wanted to make sure that all the binaries had been updated from FreeBSD 13. Here’s what I did. This tells me
Post upgrade – checking the jails Read More »
I have some jails already updated to FreeBSD 14 – let’s get a list of what needs to be updated. This cold just as easily be used to get a list of what not to upgrade, if you didn’t want to update all jails right now. These jails are already updated: [15:30 r730-01 dvl ~] % file /jails/*/bin/sh | grep 14 /jails/bacula/bin/sh: ELF 64-bit LSB pie executable, x86-64, version 1 (FreeBSD), dynamically linked,
Excluding some jails from upgrade Read More »
I was upgrading a jail (dns1) on r730-01 and I noticed this output from mkjail: In this post: FreeBSD 13.2 (upgrading from) FreeBSD 14.0 (upgrading to) mkjail-0.0.4 (upgrading with) EDIT: 2023-12-05 : This happened again when I updated the tallboy host. Looking at the mkjail source, I realized it had just completed the pkg upgrade and delete-old steps. I manually ran the delete-old command: [14:01 r730-01 dvl ~/src/scripts] % sudo jexec dns1 make
FreeBSD 14 upgrade – files not removed by delete-old Read More »
This post has been replaced by a newer post. For reference, the previous post on this server is still available. Today, the host was updated to FreeBSD 14.0, from FreeBSD 13.2. This is my primary developer server in my basement. gpart zpool list zpool status zfs list dmesg sesutil show jls