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 »
It is time to replace my existing UPS with another one. I’m getting only 3 minutes of runtime with the existing batteries (and new batteries, after recalibration). It was suggested I buy an Eaton 5PX. I wasn’t convinced. This is the first of three articles about nut. The second is about testing the shutdown. The third will be about testing both shutdown and startup timings. Two days later, I’d purchased a new Eaton
Monitoring your UPS using nut on FreeBSD Read More »
ZFS has a the ability to share itself within a jail. That gives the jail some autonomy, and I like that. I’ve written briefly about that, specifically for iocage. More recently, I started using a zfs snapshot for caching clearing. The purpose of this post is to document the existing configuration of the production FreshPorts webserver and outline the plan on how to modify it for more zfs-snapshot-based cache clearing. The current configuration
Changing from one dataset to another within a FreeBSD [iocage] jail Read More »
I encountered, and later solved, a DNS issue on a FreeBSD jail. The jail is my web proxy, of sorts. I have one public IP address, which is dynamic (not relevant, but mentioned only in passing) so all incoming web traffic goes to a single internal RFC-1918 IP address. From there, nginx does reverse proxies out to the various hosts: devgit.freshports.org dev.freshports.org test.freshports.org stage.freshports.org There are more, but you get the idea. Each
hostmask on an ip address can affect jail DNS 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 »
There are known problems with vnet and firewalls. I’ve been plagued by such issues for months. In this case, my git jail, I’m giving up and moving away from vnet jails. This post documents how I did this. Get the IP address Make sure you know the existing IP address of that jail. It might be defined within the jail, via /etc/rc.conf. It might be in the jail configuration. I ssh‘d into the
Converting an iocage jail from vnet Read More »
I noticed a problem with a newly-created freshports daemon script: starting it would sometime freeze the terminal session. The rc.d script The rc.d script was fairly straight forward: Nothing odd there, right? This first happened a week or so ago. I moved on it and decided to look into later. But wait, there’s more This issue came up again today. The system would be processing incoming commits and it would hang. It would
starting service would freeze the terminal session Read More »
See also Creating read-only PostgreSQL database users for pg_dump and pg_dumpall. I’m linking this because I use both articles on a regular basis. The error After a recent upgrade of MySQL server from 5.7.30 to 5.7.31, my database backups started encountered this error: mysqldump: Error: ‘Access denied; you need (at least one of) the PROCESS privilege(s) for this operation’ when trying to dump tablespaces The search Searching, I found a Kanyakonil post which
Every time I go to create a new iocage jail, I cannot remember out the command. Here we go, for next time: iocage create -n devgit-ingress01 –thickjail host_hostname=devgit-ingress01.int.unixathome.org ip4_addr=10.0.0.141 –release 12.1-RELEASE iocage create -n devgit-nginx01 –thickjail host_hostname=devgit-nginx01.int.unixathome.org ip4_addr=10.0.0.147 –release 12.1-RELEASE
Creating a new iocage jail Read More »
I am replacing one zroot with another because of missing binaries and suspect layout. The existing zroot is an old system predating current zroot layouts. This work is being performed on a test system (that link is not safe for young eyes). In this post: FreeBSD 12.1 mfsBSD 12.1 The failed attempt I tried once, and failed, with with old zroot_old and new zroot_new mounted. zroot_new became unusable and I started again. This
Renaming and replacing zroot filesystems using mfsBSD Read More »