Category: Linux

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...

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

March 16, 2018

Building Bareos RPMs on Ubuntu 16.04

Following on from my previous post on how to build Bareos (Backup Archiving Recovery Open Sourced) RPM packages on CentOS 6 & 7 (https://www.spheron1.uk/2018/03/14/building-bareos-rpms-on-centos-6-7/), the following instructions will show you how to build .deb versions of the packages on Ubuntu 16.04. Again, these instructions are based on Bareos version 17.2.5, so would need to be adjusted appropriately for other versions...

Categories Bareos and Bacula/Ubuntu and Debian Comments: 0

March 14, 2018

Building Bareos RPMs on CentOS 6 & 7

Bareos (Backup Archiving Recovery Open Sourced) is a popular open source backup system originally forked from the Bacula project, but they only publicly publish packages for the first release of each major version; updates are reserved for paying customers. The source code is available on GitHub however, so you can pretty easily build your own packages, even if exactly how...

Categories Bareos and Bacula/Red Hat and CentOS Comment: 1

December 15, 2013

SuperMicro ipmicfg utility on Linux

SuperMicro have a nice little utility called ipmicfg, which can be used to interact with the IPMI BMC from within your operating system. This can do all sorts of things with the IPMI BMC, however it’s really useful if you want to change the IP address details on the IPMI card without rebooting your system and going into the BIOS...

Categories IPMI/Linux/Red Hat and CentOS/SuperMicro

July 28, 2013

Building httpd 2.4.6

When trying to build an RPM from the Apache source tarball, rpmbuild bails with: RPM build errors: Installed (but unpackaged) file(s) found: /usr/lib64/httpd/modules/mod_proxy_wstunnel.so The problem is that the mod_proxy_wstunnel.so file has been omitted from the httpd.spec file used to build the RPM. Extract the tarball, open up httpd.spec in your favourite text editor and scroll down until you find a...

Categories Apache HTTPD/Red Hat and CentOS Comments: 0

February 6, 2012

Regenerate statistics in Parallels Plesk for Linux

Every night Parallels Plesk for Linux servers run a cron job to process various log files and generate statistics. This includes generating the HTML for the AWStats or Webalizer log analysis packages used for the Plesk “web statistics” features as well as updating the disk usage and bandwidth usage for each domain. Sometimes you need to re-run this task, such...

Categories Linux/Plesk Comments: 0

June 26, 2011

EPEL NSD RPM and the missing PID file directory

NSD is a fantastic authoritative nameserver from NLnet Labs which was developed in conjunction with the RIPE NCC to be a highly scalable, secure authoritative nameserver which has no recursive features by design. In fact, it is such as good nameserver that it is used on three of the root namesevers (k.root-servers.net, h.root-servers.net and l.root-servers.net). Thanks to the EPEL project...

Categories Red Hat and CentOS Comments: 0

March 20, 2011

Recovering Logical Volumes deleted with lvremove

Need to recover an LVM Logical Volume that you deleted by mistake? No problem, luckily LVM archives all of the old Logical Volume and Volume Group metadata in /etc/lvm/archive/ whenever you use something like lvremove to make adjustments to the Logical Volumes. Before you start, remember that any kind of operation like this is potentially dangerous and so backup anything...

Categories Linux Comments: 6

November 9, 2010

Using kill to display dd progress

How long has that dd process been running for now? Is it even doing anything? How long is it going to take? If you want dd to give you a progress update, then find out the process ID (PID) and then send the USR1 signal to it with kill -USR1 And dd will then print out the same records in/out,...

Categories Red Hat and CentOS Comments: 0

September 16, 2010

The dreaded scrolling GRUB GRUB GRUB on startup

Rebooting a server is always stressful, particularly when you don’t have immediate physical access to it. Of course, when the server inevitably doesn’t come back up you need to either get directly on the local console or connect in via KVMoIP and one of the worst things you can see is “GRUB GRUB GRUB” scrolling past endlessly. This is a...

Categories Red Hat and CentOS Comments: 0