Christian Samsel csamsel

Senior Consultant for Connected Car projects at @ValtechMobility. @RWTH-i5-IDSG alumni.

csamsel / netconsole.sh

Last active December 28, 2015 12:59

script to configure and start linux netconsole to remote ip

	dmesg -n debug
	mount -t configfs none /sys/kernel/config
	modprobe netconsole
	mkdir -p /sys/kernel/config/netconsole/target1
	cd /sys/kernel/config/netconsole/target1
	echo eth0 > dev_name
	echo 192.168.2.101 > remote_ip
	echo 1 > enabled

csamsel / Enhanced NGINX logstash parser

Last active February 5, 2022 14:54

Enhanced NGINX logstash parser to include upstream response time and request length fields

	Enhanced NGINX logstash parser:

	NGINX log format:

	log_format enhanced '$remote_addr - $remote_user [$time_local] "$request" $status $body_bytes_sent $request_length "$http_referer" "$http_user_agent" $request_time $upstream_response_time';
	access_log /var/log/nginx/access.log enhanced;
	error_log /var/log/nginx/error.log;

	logstash pattern (/opt/logstash/pattern/nginx):

csamsel / mp3-to-minidlna-cover.sh

Created August 21, 2015 21:10

bash one liner to create cover.jpg 's in all subdirectories (extract from first mp3 in directory)

find -type d -execdir sh -c 'cd "{}"; find . -name "*.mp3" | head -n1 | xargs --replace=FILENAME ffmpeg -loglevel quiet -i "FILENAME" cover.jpg' \;

csamsel / .config

Last active September 24, 2015 12:41

Linux Kernel config for 4.2.1-gentoo Gentoo/systemd Guest in Microsoft Hyper-V

	#
	# Automatically generated file; DO NOT EDIT.
	# Linux/x86 4.2.1-gentoo Kernel Configuration
	#

	#
	# Gentoo Linux
	#
	CONFIG_GENTOO_LINUX=y
	CONFIG_GENTOO_LINUX_UDEV=y

csamsel / Linux NVIDIA Driver activate PCI Express3

Created November 20, 2015 16:24

	by default NVIDIA Cards run with 5 GT/s (PCI Express 2 Speed) under Linux:

	You can change modules options in /etc/modprobe.d/nvidia.conf:

	options nvidiaNVreg_EnablePCIeGen3=1

csamsel / convert-to-utf8.sh

Created February 10, 2016 09:18

convert iso5596-15 filenames to utf8

convmv --notest -r -f iso8859-15 -t utf8 /directory

csamsel / ntp.conf

Last active September 11, 2022 21:07

multicast ntp client configuration

	driftfile /var/lib/ntp/ntp.drift

	leapfile /usr/share/zoneinfo/leap-seconds.list

	disable auth
	multicastclient 224.0.1.1

	restrict -4 default ignore
	restrict -6 default ignore
	restrict 127.0.0.1

csamsel / ntp.conf

Last active September 11, 2022 13:00

GPS + multicast ntp server configuration

	# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help

	driftfile /var/lib/ntp/ntp.drift

	# Leap seconds definition provided by tzdata
	leapfile /usr/share/zoneinfo/leap-seconds.list

	# Enable this if you want statistics to be logged.
	statsdir /var/log/ntpstats/

csamsel / raid5.sh

Last active April 1, 2017 20:20

create linux md raid5

csamsel / etc conf.d net

Last active December 15, 2017 22:54

Gentoo network configuration for Draytek VigorNIC 132 in Bridge Mode for Deutsche Telekom Entertain (with OpenVPN tap device)

	# Gentoo network configuration for Draytek VigorNIC 132 in Bridge Mode for Deutsche Telekom Entertain (with OpenVPN tap device)
	# eth0 = VigorNIC, eth1 = unused (VM Network), eth2 = physical NIC to internal network
	# tap0 = OpenVPN device, br0 = bridge for OpenVPN
	#
	# 192.168.2.0/24 internal network
	# 192.168.200.0/24 VM network
	# 192.168.1.1 VigorNIC webinterface
	#
	# create symlinks net.eth0, net.eth1, net.eth2, net.br0, net.ppp0, net.tap0
	#