ramblings, notes, stuff to remember
Configuration on the hostAdd a virtual serial port to the VM: qm set -serial0 socket or echo “serial0: socket” >> /etc/pve/qemu-server/.conf Configuration on the guest Enable and start serial console on the guest VM: systemctl enable serial-getty@ttyS0.servicesystemctl start serial-getty@ttyS0.service Instruct grub2 to send the boot messages on the serial port by editing /etc/default/grub and adding: … Read more
When sending mail through the squirrelmail webmail interface and using the installation defaults on Debian Wheezy and Debian Jessie, Greek characters do not appear properly in the destination inbox. This has to do with the default squirrelmail encoding which is set to iso-8859-1 . To solve this, I had to perform the following: View the … Read more
After the upgrade from Jessie to Stretch, GRUB started throwing the following error: error: no symbol table. … Press any key to continue… If I pressed any key or didn’t press anything at all, system would boot normally after a few seconds. Still, the error message bothered me, so I fixed it by using the … Read more
After upgrading my laptop from Jessie 8.8 to Debian 9 Stretch on the 19th of June, 2017, PAC Manager stopped working. Specifically, it would start, but hanged when I tried to open a connection, either ssh or local. After searching around, I found the following post which seems to have given the solution: https://sourceforge.net/p/pacmanager/bugs/293/ The … Read more
I was getting some warnings in one machine’s Apache 2 web server error log regarding mod_python, see below: [Wed Jan 25 01:29:11.717727 2017] [:error] [pid 4389] python_init: Python version mismatch, expected ‘2.7.5+’, found ‘2.7.9’. [Wed Jan 25 01:29:11.717856 2017] [:error] [pid 4389] python_init: Python executable found ‘/usr/bin/python’. [Wed Jan 25 01:29:11.717864 2017] [:error] [pid 4389] … Read more
After running apt-get update && apt-get upgrade on a Debian Wheezy server package apache2-mpm-prefork:amd64 was removed and package apache2-mpm-itk:amd64 installed instead. After this change in Apache worker, all Virtualhosts sites on the server stopped working, with the following error format in the logs: [Mon Nov 21 09:57:41 2016] [emerg] [client xxx.xxx.xxx.xxx] (13)Permission denied: mod_fcgid: can’t … Read more
Useful utilities I like to install after a fresh Debian installation (or on a running system): vim-nox debfoster localepurge htop iotop mytop latencytop sysstat debian-archive-keyring (to avoid apt-get update warnings) apticron (list available updates of installed packages along with the differences in the two versions) hdparm (measure I/O speeds) virt-what (decide if we are running inside … Read more