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: HEADS UP: I failed to get this to work. I’m still going to post it though. What I did wrong: I should not have used ix1 – that’s the wrong NIC to use. This needs to use an active […]
Creating a vnet jail Read More »
I recently discovered that you can delete all snapshot from a ZFS filesystem with a single command. It came to me via fortune: You can delete a range of ZFS snapshots (a-z) in multiple ways. The following will delete d and all earlier snapshots: zfs destroy mypool/data@%d To delete d and all later snapshots: zfs destroy mypool/data@d% To delete all dataset snapshots: zfs destroy mypool/data@% Make sure to let ZFS perform a dry
Moving some ZFS filesystems to the ‘trash’ and removing all their snapshots – sanoid Read More »
Tonight I got blocked by iocage and handling a ZFS filesystem from within an iocage jail. These are the steps I followed to convert that jail from iocage to a vanilla jail. The variable To make this solution easier to use, at least for me, on future jail migrations, I have these variables: For example, my devgit-nginx01 jail is at: [dan@knew:~] $ zfs list system/iocage/jails/mysql56 NAME USED AVAIL REFER MOUNTPOINT system/iocage/jails/mysql56 11.5G 20.6T
Converting an iocage jail to a vanilla jail Read More »
Today I tested the shutdown but was mostly concerned by the startup. I wanted the hosts to start in a specific order. I lived tweeted it and that thread is the basis for this post. The UPS has three groups of outlets: primary group, group 1, group 2. Each group has a On Delay setting. You could choose which gear to power on first. I have all mine set to zero, so all
nut – testing shutdown and startup Read More »
Following on from my recent nut setup, this is the second in a series of three posts. The next post will deal with adjusting startup and shutdown times to be sure everything proceeds as required. I want to test the host shutdown mechanism without: unplugging the UPS from the mains powering off the UPS without powering off the servers I have just updated all the hosts and the jails on those hosts. This
nut – testing the shutdown mechanism Read More »
I use Tarsnap for my critical data. Case in point, I use it to backup my Bacula database dump. I use Bacula to backup my hosts. The database in question keeps track of what was backed up, from what host, the file size, checksum, where that backup is now, and many other items. Losing this data is annoying but not a disaster. It can be recreated from the backup volumes, but that is
Tarsnap – cleaning up old backups Read More »
Today was battery replacement day at my place. The UPS batteries were replaced without downtime. That doesn’t mean there wasn’t downtime. I am not documenting this in real-time. This is post-event analysis. First, I wanted to change the battery replacement date, so I ran acptest on the pfSense server, to which the UPS is connected to. [2.4.5-RELEASE][admin@bast.int.unixathome.org]/root: apctest 2020-08-15 14:51:30 apctest 3.14.14 (31 May 2016) freebsd Checking configuration … sharenet.type = Network &
Unintended shutdown of the #homelab Read More »
I backup my databases daily. They get dumped to a disk file and copied somewhere else. Then they are backed up into a file system. Once a month they get copied to tape. Yesterday I upgraded a PostgreSQL database server, and it went well. Overnight, a backup failed. This is the story of how that led to me discovering my backups have been at risk for nearly 100 days. The error This morning
The backups have been wrong for about 97 days Read More »
This post has been replaced by a newer post. For future reference, this is the knew server … oh wait, I think it’s this server which is was mounted in the 4U chassis mentioned in this post. It runs a few jails, including Bacula regression testing services. It is now mounted in a SuperChassis 846E16-R1200B This is the previous post for this system configuration. Photos of the assembly. File systems Paritions zpools Those
This post has been replaced by a new one. For reference, the previous post on this server is still available. FYI, this server is named after Joshua Slocum, who was the first person to sail single-handedly around the world. This server was upgraded on Feb 2 2019. Only the storage persisted. Everything else was upgraded. The hardware M/B – Supermicro X9DRE-TF+ RAM – 128GB composed of 8x 16GB DDR3 1600Mhz 21300 ECC/REG CPU