Open Source

Mount your ZFS datasets anywhere you want

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ZFS is very flexible about mountpoints, and there are many features available to provide great flexibility. When you create your second zpool this is what it might look like: $$ zfs list -r main_tank NAME USED AVAIL REFER MOUNTPOINT main_tank 893G 3.52T 96K /main_tank main_tank/data 786G 3.52T 88K /main_tank/data main_tank/data/dvl 755G 3.52T 755G /main_tank/data/dvl main_tank/data/freshports 31.4G 3.52T 88K /main_tank/data/freshports main_tank/data/freshports/backend 3.11G 3.52T 88K /main_tank/data/freshports/backend This is a pool I created long ago, but […]

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Converting thin jails to thick jails

Leave a Comment / ezjail, FreeBSD, iocage, Jails, Open Source, ZFS / By /

I have been using ezjail since at least 2008 (see earlier blog post). A few years ago, I started deploying iocage on new servers. About three months ago, I starting converting systems from ezjail to iocage. When I converted my first system, I found that the existing documentation for conversion was incomplete. Specifically, symlinks were a problem. I raised an issue and wrote a better script which I have since used on a

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using syncthing between my OSX laptop and my FreeBSD server

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We know the routine. You have a desktop, and a laptop, or perhaps two laptops. You want your files in both places. A shared, remotely mounted directory is not ideal. Instead, let’s have the systems synchronize themselves. That’s where syncthing comes in: Syncthing replaces proprietary sync and cloud services with something open, trustworthy and decentralized. Your data is your data alone and you deserve to choose where it is stored, if it is

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Getting ‘FreeBSD-10.2 is vulnerable’ messages on a 12.0 host

2 Comments / Nagios, nrpe, Open Source / By /

I started playing with /usr/local/etc/periodic/security/405.pkg-base-audit as part of a monitoring system. It works fine from the command line, but when I use Nagios plugins, I am getting unexpected results. By unexpected, I mean messages about FreeBSD 10.2. The host in question runs FreeBSD 12.0. The problem cannot be reproduced on the host, only from the Nagios monitoring host. Oh wait, the Nagios monitoring host is a jail on the host in question. That

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Double timestamps in logs

1 Comment / FreeBSD, Open Source, syslogd / By /

I noticed some double timestamps in my logs recently. They started just after I upgraded the host to FreeBSD 12, but I am not convinced they are related. This is from /var/log/messsages: Jan 22 21:41:40 knew 1 2019-01-22T21:41:40.760533+00:00 knew.int.unixathome.org pkg 89351 – – py36-iocage-devel upgraded: 1.0.0.20181219,1 -> 1.0.0.20190122,1 They started late yesterday, this is from /var/log/maillog: Jan 21 22:28:58 knew 1 2019-01-21T22:28:58.677083+00:00 knew.int.unixathome.org postfix/anvil 42521 – – statistics: max connection rate 1/60s for

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Upgrading to FreeBSD 12.0 from FreeBSD 11.2 using beadm and freebsd-update

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Today I will upgrade knew from FreeBSD 11.2 to FreeBSD 12.0. It so happens that this is my last server at home which is still running 11.2, but I do have another server still on 11.2, but that one is at NYI. This post isn’t so much about beadm or about freebsd-update. I have written about moving to a beadm layout, but if your zfs list output looks something like this, you’re good

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Collecting statistics from bind / named

3 Comments / FreeBSD, iocage, Jails, named / By /

I use bind (Berkeley Internet Name Domain) as my DNS server. I am currently running bind 9.11.5P1 on FreeBSD 11.2-RELEASE-p8 in a jail, with iocage as my jail manager. The OS, jail, and jail manager should play no part in how this works. I have been collecting statistics from bind for some time. I have configured LibreNMS to collect the details via snmpd and they are plotted in a lovely looking graph. The

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Configuring LibreNMS Nginx statistics

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This post might help me in configuring net-snmp to deliver Nginx statistics to LibreNMS. As such, this post may not be as helpful to you as the official documentation. Key is this URL: http://127.0.0.1/nginx-status The nginx.conf file needs something like this: NOTE: the fastcgi_pass line might also be fastcgi_pass 10.80.0.92:9000 depending on what you find in /usr/local/etc/php-fpm.conf. You should see something like this in the script, which you might have copied from https://github.com/librenms/librenms-agent/blob/master/snmp/nginx

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Adding a zroot pool to an existing system

Leave a Comment / beadm, Disks, File Systems, FreeBSD, hardware, HBA, ZFS / By /

Current FreeBSD versions will allow you to create a zroot zpool from which you can boot. However, when I created the main zpool for slocum (on Fri May 3 2:16 2013), that option did not exist. You might ask: how do I know that date? [dan@slocum:~] $ zfs get creation system NAME PROPERTY VALUE SOURCE system creation Fri May 3 2:16 2013 – At present, the system boots from a raidz2 zpool. This

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x8dtu

Leave a Comment / hardware, ZFS / By /

This is x8dtu (named after the SuperMicro motherboard). This is the new FreshPorts server. The older post is still available In short: FreeBSD 11.2 booting off a mirrored pair of zfsroot SSDs 4.5TB of mirrored ZFS 196612 MB of RAM (yeah, that’s 196GB of RAM) SuperMicro X8DTU motherboard Intel Xeon E5620 @ 2.40GHz (two of those, giving 16 CPUs) NOTE: this post replaces

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