Spheron1 -

November 1, 2025

ARM64 timescaledb-tune on macOS

Despite Apple having transitioned their desktop and laptop devices from x86-64 to ARM64 with the M1 processor and macOS 11 Big Sur in late 2020, TimescaleDB still don’t provide ARM64 builds of their “timescaledb-tune” utility on macOS in November 2025 through either their official installation method using a Homebrew tap or in the binaries released in the GitHub repository. Trying...

PostgreSQL Comments: 0

May 7, 2025

APT/DPKG errors for shim-signed package

When running a routine “apt update” on an Ubuntu server, I was getting the following error: The bizarre thing here is that the /dev/nvme1n1p1 device is nothing to do with the UEFI ESP, that lives on /dev/sdi1 as this particular server can’t boot from NVMe devices and so uses a small USB stick for /boot/efi and /boot instead. The /dev/sdi1...

Ubuntu and Debian Comments: 0

May 6, 2025

Acronis Cyber Infrastructure USB installer

Recently a colleague and I have run into all sorts of problems trying to install Acronis Cyber Infrastructure (ACI) from a USB flash drive. ACI is basically Virtuozzo Hybrid Infrastructure (VHI), but skinned blue instead of the usual red and with the Acronis Backup Gateway service added so that Acronis Cyber Protect can use it as for backup storage.For those...

General Comments: 0

May 2, 2025

Upgrading NetBox with plugins installed

NetBox is an excellent open source IP Address Management (IPAM) and DataCenter Infrastructure Management (DCIM) with a huge amount of built-in functionality. For anything that isn’t covered out-of-the-box, there is also a wealth of third party plugins. One of these plugins is NetBox Inventory which adds asset tracking functionality, however the installation instructions seem to forget to mention that you...

General Comments: 0

April 24, 2025

Removing APNs certificates in cPanel

For many years cPanel has provided support for push notifications on Apple devices for IMAP, CalDAV and CardDAV using the Apple Push Notification service (APNs).In order to set this up, you need to provide APNs certificates for com.apple.mail, com.apple.calendar and com.apple.contact from Apple, which can be installed Service Configuration -> Manage Service SSL Certificates -> iOS Mail Push Notifications (APNs)...

cPanel/WHM Comments: 0

May 28, 2020

Sendmail on Plesk – user is not allowed to send mail

I recently ran into a strange problem on a Plesk server where one subscription was inexplicably unable to send email using sendmail (which is what the PHP mail() function uses). The following was being logged in /var/logs/maillog for each attempt: plesk sendmail[1628571]: handlers_stderr: ERROR:__main__:Rejecting message: system user uid='<user ID>’ is not allowed to send mailplesk sendmail[1628571]: handlers_stderr: DATA REPLY:554:5.7.0 Your...

Plesk Comments: 0

April 3, 2019

Changing the locale in Ubuntu Server

When logging into any cPanel server via SSH from an Ubuntu jump server I was seeing some strange warnings from Perl which I didn’t see when logging in from my laptop running macOS: perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = “C.UTF-8” are supported and installed on...

cPanel/WHM/Mac OS X/Ubuntu and Debian Comments: 0

September 24, 2018

ProCurve SSH – no matching cipher found

I recently ran into a strange problem where I suddenly couldn’t SSH to any of our HPE ProCurve 2800 series (2824, 2848) devices from either macOS or Linux. I’m still not really sure what started this as OpenSSH definitely hasn’t been updated recently on the Linux client device at the very least, so I don’t see any reason for the...

HP ProCurve Comments: 0

September 17, 2018

OpenLiteSpeed WordPress cache mysteriously not working

The OpenLiteSpeed web server (OLS) and LiteSpeed Cache for WordPress (LSCWP) plugin provide a great way of both speeding up WordPress and handing large numbers of visitors. OLS is an open source derivative of the LiteSpeed Web Server (LSWS), which delivers most many of the key features, including the high performance LiteSpeed Cache (LSCache). Whilst it can’t read Apache configuration files...

LiteSpeed Comments: 0

August 15, 2018

Rspamd, bayes expiry and Redis – ERR Number of keys can’t be greater than number of args

I recently enabled the bayes expiry module (https://rspamd.com/doc/modules/bayes_expiry.html) in Rspamd and found myself staring at the following error in the Rspamd logs with no idea what it meant: lua; bayes_expiry.lua:332: cannot perform expiry step: ERR Number of keys can’t be greater than number of args The only reference that I could find to this online was a single post on...

Spam Comments: 0